Document:

EXCHANGE AGREEMENT

     THIS EXCHANGE AGREEMENT (this "Agreement") dated as of January 2, 2000, is
made by and between COGENTRIX DELAWARE HOLDINGS, INC., a Delaware corporation,
having its principal place of business at 1105 North Market Street, Suite 1108,
Wilmington, DE 19801 ("CDH"), and ECOSCIENCE CORPORATION, a Delaware
corporation, having its principal place of business at 10 Alvin Court, East
Brunswick, New Jersey 08816 (the "EcoScience").

                                   WITNESSETH

     WHEREAS, EcoScience issued in favor of CDH (i) the promissory note, dated
December 30, 1998 in the principal amount of $20,600,000 and (ii) the promissory
note, dated March 15, 1999 in the principal amount of $1,000,000 (collectively,
the "EcoScience Notes"); and

     WHEREAS, Agro Power Development Inc., a wholly owned subsidiary of
EcoScience ("APD"), issued in favor of CDH the promissory note, dated March 10,
1997, in the principal amount of $893,750 (the "Agro Power Note" and, together
with the EcoScience Notes, the "Notes"); and

     WHEREAS, EcoScience desires to exchange the Notes for the promissory note,
dated as of the date hereof, and attached as Exhibit A hereto (the "Exchange
Note") and CDH is willing to exchange the Notes for the Exchange Note on the
terms and subject to the conditions set forth herein and therein; and

     WHEREAS, contemporaneous with the effectiveness of this Agreement (i) each
of Cogentrix of Buffalo, Inc., Cogentrix of Fort Davis, Inc., Cogentrix of
Marfa, Inc. and Cogentrix of Pocono, Inc. (collectively, the "Merged
Corporations") is being merged with and into Village Farms of Delaware, LLC and
(ii) Cogentrix Greenhouse Investments, Inc. ("CGI") is being merged with and
into APD;and

     WHEREAS, capitalized terms used herein and not otherwise defined herein
shall have the meanings set forth in the Stock Purchase Agreement (the "Stock
Purchase Agreement") dated as of December 7, 1998, between CDH and EcoScience.

     NOW, THEREFORE, in consideration of the premises and the representations,
warranties and agreements herein contained, the parties agree as follows:

1.   Exchange of Notes. The obligation of EcoScience and APD to pay the
     outstanding principal together with all interest accrued on the Notes is
     hereby excused by CDH and EcoScience shall hereinafter be obligated to pay
     the principal of, and interest on, the indebtedness evidenced by the
     Exchange Note in accordance with the terms and conditions contained herein
     and therein. Such exchange is hereby evidenced by the cancellation and
     return by CDH to EcoScience of the EcoScience Notes, the return by CDH to
     APD of the Agro Power Note and the execution and delivery by EcoScience of

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     the Exchange Note and receipt thereof by CDH taking place contemporaneously
     with the execution of this Agreement.

2.   Consideration for Exchange. In consideration for the exchange by CDH of the
     Notes for the Exchange Note, EcoScience shall, concurrently herewith,
     authorize and issue 333,333 shares of Series A Preferred Stock of
     EcoScience (the "Series A Preferred Stock") containing the provisions set
     forth on Exhibit B hereto and is delivering such shares to CDH.

3.   Delivery of Certain Documents. Contemporaneous with the execution of this
     Agreement, EcoScience is delivering to CDH (i) a certified

copy of all corporate resolutions authorizing the transactions contemplated
hereunder and an incumbency certificate; and (ii) an opinion of counsel to
EcoScience.

4.   Pledge Arrangement.

     (a)  CDH hereby agrees that the shares of the Merged Corporations and CGI
          are hereby released from the Stock Pledge and CDHI is delivering the
          certificates representing such shares to EcoScience;

     (b)  Contemporaneously with the execution of this Agreement, EcoScience and
          CDH are entering into a Pledge Agreement (the "New Pledge Agreement")
          pursuant to which all of the outstanding shares of APD (the "APD
          Shares") are being pledged to CDH;

     (c)  Subject to the terms of a Stock Custody Bailment Agreement among
          CoBank, ACB, CDH and EcoScience (the "Stock Custody Bailment
          Agreement") being executed contemporaneously with this Agreement, CDH
          is subordinating the lien on the APD Shares created by the New Pledge
          Agreement to the lien of CoBank, ACB and delivering to CoBank, ACB the
          certificates representing the APD Shares.

5.   Representations and Warranties of EcoScience. EcoScience hereby represents
     and warrants to CDH as follows:

     (a)  Organization and Authority of EcoScience. EcoScience is a corporation
          duly organized, validly existing and in good standing under the laws
          of the State of Delaware and has all necessary corporate power and
          authority to enter into this Agreement, the New Pledge Agreement and
          the Stock Custody Bailment Agreement and to issue the Exchange Note
          and the Series A Preferred Stock, to carry out its obligations
          hereunder and thereunder and to consummate the transactions
          contemplated hereby and thereby. The execution and delivery of this
          Agreement, the New Pledge Agreement and the Stock Custody and Bailment
          Agreement and the issuance of the Exchange Note and the Series A
          Preferred Stock by EcoScience, the performance by EcoScience of its
          obligations hereunder and thereunder and the consummation by
          EcoScience of the transactions

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     contemplated hereby and thereby have been duly authorized by all requisite
     action on the part of EcoScience. This Agreement, the New Pledge Agreement
     and the Stock Custody Bailment Agreement, the Exchange Note and the Series
     A Preferred Stock have been duly executed and delivered by EcoScience, and
     (assuming due authorization, execution and delivery by CDH) each of this
     Agreement, the New Pledge Agreement, the Stock Custody Bailment Agreement
     and the Exchange Note constitutes a valid and binding obligation of
     EcoScience enforceable against EcoScience in accordance with its terms.

     (b)  No Conflict. Except as may result from any facts or circumstances
          relating solely to CDH, the execution, delivery and performance of
          this Agreement, the New Pledge Agreement and the Stock Custody
          Bailment Agreement and the issuance of the Exchange Note and the
          Series A Preferred Stock by EcoScience do not and will not (i)
          violate, conflict with or result in the breach of any provision of the
          Certificate of Incorporation or By-laws of EcoScience, (ii) conflict
          with or violate any law or governmental order applicable to EcoScience
          or (iii) conflict with, or result in any breach of, constitute a
          default (or event which with the giving of notice or lapse of time, or
          both, would become a default) under, require any consent under, or
          give to others any rights of termination, amendment, acceleration,
          suspension, revocation, or cancellation of, or result in the creation
          of any encumbrance on any of the assets or properties of EcoScience
          pursuant to, any note, bond, mortgage or indenture, contract,
          agreement, lease, sublease, license, permit, franchise or other
          instrument or arrangement to which EcoScience is a party or by which
          any of such assets or properties are bound or affected.

     (c)  Governmental Consents and Approvals. The execution, delivery and
          performance of this Agreement, the New Pledge Agreement and the Stock
          Custody Bailment Agreementand the issuance of the Exchange Note and
          the Series A Preferred Stock by EcoScience do not and will not require
          any consent, approval, authorization or other order of, action by,
          filing with, or notification to, any governmental authority.

6.   Miscellaneous.

     (a)  Counterparts. This Agreement may be executed in one or more
          counterparts, all of which shall be considered one and the same
          agreement, it being understood that all parties need not sign the same
          counterpart.

     (b)  Entire Agreement; No Third-Party Beneficiaries.. This Agreement and
          the Pledge Amendment (including the documents and instruments referred
          to herein and therein) (i) constitutes the entire agreement and
          supersedes all prior agreements and understandings, both written and
          oral, between CDH and EcoScience with respect to the subject matter
          hereof and (ii) is not intended to confer upon any person other than
          the parties hereto any rights or remedies hereunder.

     (c)  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
          ACCORDANCE WITH THE LAWS OF THE STATE OF

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          NORTH CAROLINA.

7.   Mandatory Payments and Prepayments.

     (a)  On December 1st of each year commencing on December 1, 2003, until and
          including December 1, 2007, EcoScience shall pay the principal amount
          then outstanding under the Exchange Note in the amount of
          $3,180,000.00.

     (b)  EcoScience shall prepay the principal amount outstanding from time to
          time under the Exchange Note at the following times and in the
          following amounts:

          (i)  Annual Mandatory Prepayment. On each December 31st, commencing on
               December 31, 2000, EcoScience shall prepay the then outstanding
               principal of the Exchange Note in an amount equal to the excess
               of (X) 0.70 times (EBITDA minus $15,000,000) over (Y) the actual
               amount of principal and interest payments made by EcoScience to
               CDH in respect of the Exchange Note in the fiscal year then
               ending, if any). "EBITDA" shall mean, for any period, the sum of
               (a) net income after taxes of the Corporation, determined in
               accordance with generally accepted accounting principals in the
               United States plus (b) an amount which, in the determination of
               net income for such period, has been deducted for (i) interest
               expense, (ii) total federal, state, local and foreign income,
               value added and similar taxes and (iii) depreciation and
               amortization expense, all as determined in accordance with GAAP.

          (ii) Prepayment Events: The following shall constitute "Prepayment
               Events", if they occur, after such time as the indebtedness owing
               pursuant to the CoBank Credit Agreement is paid in full: (a)
               EcoScience or any of its Subsidiaries shall incur any
               indebtedness for borrowed money, other than the indebtedness
               evidenced by the CoBank Credit Agreement (as hereinafter defined)
               and refinancings or replacements thereof (to the extent of the
               aggregate principal amount actually refinanced or replaced), and
               intercompany indebtedness between EcoScience and any of its
               Subsidiaries or between any of such Subsidiaries (a "Debt Event")
               (b) EcoScience or any of its Subsidiaries shall issue any capital
               stock for cash (a "Stock Event") other than the issuance of
               Capital Stock by a newly formed 51% owned subsidiary to Grodania
               A/S or its designee (the "Grodan Transaction"), or (c) EcoScience
               or any of its Subsidiaries shall sell any asset, other than in
               the ordinary course of business other than the transfer of assets
               to a newly formed 51% owned Subsidiary in connection with the
               Grodan Transaction (an "Asset Sale"). "Net Proceeds" shall mean
               (x) in the case of a Debt Event, all cash loan proceeds, less
               reasonable transactions expenses, (y) in the case of a Stock
               Event, all cash proceeds, less reasonable transaction expenses
               and (z) in the case of an Asset Sale, all net cash proceeds,
               after payment of reasonable transactions expenses and
               indebtedness required to be repaid by any lien attached to the
               related asset.

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     Except as specifically set forth in Section 8(b) below, on the day that a
     Prepayment Event occurs, EcoScience shall pay over to CDH as a prepayment
     on the Exchange Note, the lesser of (i) 50% of the Net Proceeds related to
     such Prepayment Event or (ii) the principal and interest then outstanding
     on the Exchange Note. . If any such payment shall be sufficient to pay the
     Exchange Note in full, CDH shall on receipt of such payment, mark the
     Exchange Note as cancelled and return the same to EcoScience. If such
     payment is not sufficient to pay the Exchange Note in full, CDH shall
     record such partial prepayment amount on Schedule I to the Exchange Note.
     Each such payment made pursuant to this Section 7(b) shall be applied first
     to the payment of accrued interest, and the balance to the outstanding
     principal amount of the Exchange Note in inverse order of maturity thereof.

8.   Certain Additional Provisions.

     (a)  Credit Agreement Provisions. For such time as any portion of the
          indebtedness evidenced by the Consolidated, Amended and Restated Loan
          Agreement, dated as of January 2, 2000, by and between CoBank, ACB and
          Village Farms, L.P. (the "CoBank Credit Agreement") shall remain
          outstanding and the Exchange Note shall not have been paid in full,
          the Corporation shall observe and perform all of its covenants set
          forth in Sections 8 and 9 of the Guaranty of EcoScience Corporation to
          CoBank, ACB delivered pursuant to the CoBank Credit Agreement, and all
          such covenants are incorporated by reference herein as if set forth
          fully herein.

     (b)  Other Covenants. The Corporation covenants and agrees that, from the
          date on which the indebtedness evidenced by the CoBank Credit
          Agreement shall have been paid in full, it shall observe and perform,
          until the Exchange Note shall have been paid in full, the following
          covenants

            (i) Maintenance of Existence. EcoScience shall maintain its
                corporate existence in good standing under the laws of the
                State of Delaware. EcoScience will qualify and remain
                qualified as a foreign corporation in each jurisdiction in
                which such qualification is necessary or desirable in view
                of its business, operations and properties and the failure
                to be so qualified would have a material adverse effect on
                EcoScience.

           (ii) Compliance with Law. EcoScience shall comply with: (a) all
                rules, regulations and orders applicable to EcoScience or
                its business; and (b) all agreements, indentures, mortgages,
                and other instruments to which it is a party or by whicih it
                or any of its property is bound, where the failure to so
                comply could have a material adverse effect on EcoScience.

          (iii) Payment of Taxes. EcoScience shall cause to be paid when
                due all taxes, assessments, and other governmental charges
                and levies upon it, its sales, its properties, and federal
                and state taxes withheld from its employees' earnings,
                unless (a) such taxes, assessments, or other governmental
                charges or levies shall be contested in good faith by
                appropriate actions or

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<PAGE>

                legal proceedings, (b) adequate reserves therefor shall be
                established by EcoScience in accordance with GAAP during the
                period of such contest, (c) the enforcement of any contested
                items, and any lien or encumbrance relating thereto, is
                effectively, stayed, and (d) the failure to pay or comply
                with the contested item could not reasonably be expected to
                result in a material adverse effect on EcoScience.

           (iv) Payment of Liabilities. EcoScience shall pay all liabilities
                as they become due unless they are contested in good faith
                by appropriate actions or legal proceedings, EcoScience
                establishes adequate reserves therefor in accordance with
                GAAP, the enforcement of such liability, and any lien or
                encumbrance relating thereto, is effectively stayed, and
                such contest will not result in a material adverse effect on
                EcoScience.

            (v) Prohibition on Sale of Assets. EcoScience shall not sell,
                convey, assign or otherwise transfer or dispose of,
                voluntarily, by operation of law or otherwise, any of its
                assets except in the ordinary course of business.

           (vi) Prohibition on Change in Business Structure. Without giving
                at least thirty (30) days' prior written notice to CDH, and
                furnishing CoBank with such documents as CoBank may
                reasonably request prior to taking any such action,
                EcoScience shall not change its name, identity or corporate
                structure, or the location of its place of business (or
                chief executive office if more than one place of business).

          (vii) Prohibition in Dissolution and Liquidation. EcoScience
                shall not dissolve or liquidate, or enter into any merger,
                consolidation, or other combination unless the surviving
                entity of such merger, consolidation or other combination
                shall have a net worth (after giving effect to the
                transaction) that is greater than or equal to that of
                EcoScience immediately prior to such transaction.

         (viii) Payment of CoBank. In the event that a Stock Event shall
                occur while the indebtedness owing pursuant to the CoBank
                Credit Agreement ("Outstanding Senior Debt") shall remain
                outstanding and the Exchange Note shall not have been paid
                in full, EcoScience (or the relevant Subsidiary) shall pay
                over to CoBank as a prepayment of the Outstanding Senior
                Debt the lesser of (i) 50% of the Net Proceeds related to
                such Stock Event and (ii) the principal and interest of the
                Outstanding Senior Debt then outstanding.

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<PAGE>

     IN WITNESS WHEREOF, CDH and EcoScience have each caused this Agreement to
be duly executed as of the date first written above.

                                           ECOSCIENCE

                                           ECOSCIENCE CORPORATION

                                      By:
                                          -------------------------------------
                                      Name:  Kenneth S. Hollander
                                      Title: Senior Vice President and
                                             Chief Financial Officer

                                             CDH:

                                             COGENTRIX DELAWARE HOLDINGS INC.

                                      By:
                                          -------------------------------------
                                      Name:  Thomas F. Schwarz
                                      Title: Senior Vice President-Finance and
                                             Treasurer

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EXHIBIT A
TO
EXCHANGE AGREEMENT

                                     FORM OF
                                 PROMISSORY NOTE

$15,900,000.00                                                  January 2, 2000

     FOR VALUE RECEIVED, the undersigned, ECOSCIENCE CORPORATION, a Delaware
corporation, having its principal place of business at 10 Alvin Court, East
Brunswick, New Jersey 08816 (collectively, the "Maker"), hereby promises to pay
to the order of COGENTRIX DELAWARE HOLDINGS, INC., a Delaware corporation,
having its principal place of business at 1105 North Market Street, Suite 1108,
Wilmington, DE 19801 (together with its successors and assigns, the "Holder"),
the principal sum of FIFTEEN MILLION, NINE HUNDRED THOUSAND AND NO/100 DOLLARS
($15,900,000.00), together with interest at five percent (5.00%) per annum, in
five (5) installments of $3,180,000.00, payable on each December 1st, commencing
on December 1, 2003 until and including December 1, 2007.

     If (i) there should be a default in the payment of interest or principal
due hereunder or (ii) the Maker or any other person liable hereon should make an
assignment for the benefit of creditors or (iii) attachment or garnishment
proceedings are commenced against the Maker or any other person liable hereon,
or (iv) a receiver, trustee or liquidator is appointed over or execution levied
upon any property of the Maker or (v) proceedings are instituted by or against
the Maker or any other person liable hereon under any bankruptcy, insolvency,
reorganization or other law relating to the relief of debtors, including without
limitation the United States Bankruptcy Code, as amended, or (vii) there shall
occur any liquidation, dissolution or winding up of the Maker, (viii) the Maker
makes any misrepresentation or breaches any warranties made to the Holder in
connection with any loans extended by the Holder to the Maker, then, and in each
such event, the Holder may, at its option, without notice or demand, declare the
remaining unpaid principal balance of this Promissory Note and all accrued
interest thereon immediately due and payable in full.

     Any amount hereunder which is not paid when due, whether at stated
maturity, by acceleration or otherwise, shall bear interest from the date when
due until paid at the lesser of (a) the foregoing rate per annum plus four
percentage points or (b) the maximum rate permitted by law, said interest to be
compounded annually and computed on the basis of a 360-day year consisting of
twelve 30 day months.

     All payments made hereunder shall be made in lawful currency of the United
States of America to Wilmington Trust Company, Wilmington, Delaware, ABA Routing
Number 031-100-092, Account of Cogentrix Delaware Holdings, Inc., Account Number
32561-4, Attn: Christopher Monigle, or at such other place as the Holder may
designate in writing. All payments made hereunder, whether a scheduled payment,
prepayment, or payments as a result of acceleration, shall be allocated first to
accrued but unpaid interest, and then to payments of principal remaining
outstanding hereunder.

<PAGE>

     Maker agrees to pay all reasonable costs of collection, including
attorneys' fees paid or incurred by the Holder in enforcing this Promissory Note
on default or the rights and remedies herein provided.

     This Promissory Note is made pursuant to the provisions of the Exchange
Agreement (the "Exchange Agreement") dated as of January 2, 12000, between the
Maker and the Holder. This Promissory Note is subject to mandatory prepayment,
in whole or in part, as provided in the Exchange Agreement. The Maker may prepay
this Promissory Note in whole or in part without premium or penalty.

     The Maker, for itself and for any guarantors, sureties, endorsers and/or
any other person or persons now or hereafter liable hereon, if any, hereby
waives demand of payment, presentment for payment, protest, notice of nonpayment
or dishonor and any and all other notices and demands whatsoever, and any and
all delays or lack of diligence in the collection hereof, and expressly consents
and agrees to any and all extensions or postponements of the time of payment
hereof from time to time at or after maturity and any other indulgence and
waives all notice thereof.

     This Promissory Note shall be governed by and construed and enforced in
accordance with the laws of the State of North Carolina.

     Holder acknowledges and agrees that all Maker's obligations arising under
this Promissory Note (the "Subordinated Debt"), including without limitation the
payment of any principal of (and premium, if any) and interest, are hereby
expressly subordinated, to the extent and in the manner hereinafter provided, in
right of payment to the prior indefeasible payment in full of all Senior Debt
(as defined below), and that all liens in favor of Holder under the Subordinated
Debt are hereby expressly subordinated, to the extent and in the manner
hereinafter provided, in right of priority and enforcement to the liens of the
holders of the Senior Debt. The following subordination is for the benefit of
each present or future holder of Senior Debt (collectively "Senior Creditors"),
and Holder and each future holder of any Subordinated Debt (collectively "Junior
Creditors") agrees that, notwithstanding any provisions to the contrary
contained in this Promissory Note:

1.   Payments or Distributions. Until such time as all amounts owing under the
     Senior Debt are indefesibly paid in full, Maker shall not be required to
     make, and the Junior Creditors shall not be entitled to require or receive,
     any payments of principal or interest (including regularly scheduled
     payments, Annual Mandatory Prepayments (as defined in the Exchange
     Agreement), payments on account of Prepayment Events (as defined in the
     Exchange Agreement), or payments due on account of acceleration), including
     payments in cash, securities, or other property:

     (a)  From the time Maker has received written notice from CoBank, ACB or
          other Senior Creditor of the occurrence of an Event of Default or a
          Potential Default under the Senior Debt until the time Maker receives
          written notice from CoBank or other Senior Creditor that such Event of
          Default or Potential Default has been cured or waived; or

<PAGE>

     (b)  During any Fiscal Year of Maker in an amount greater than the sum of
          (A) (i) 70% of the amount by which Maker's EBITDA during such Fiscal
          Year exceeds $15,000,000.00, less (ii) the actual amount of principal
          and interest payments made by Maker to Junior Creditors in respect of
          the Subordinated Debt during such Fiscal Year plus (B) commencing on
          December 1, 2003, the amount of the installment amount required to be
          paid in such Fiscal Year pursuant to the first paragraph of this Note.
          The term "EBITDA" shall mean for any Fiscal Year, the sum of (y) net
          income after taxes, determined in accordance with generally accepted
          accounting principals in the United States ("GAAP") plus (z) an amount
          which, in the determination of net income for such period, has been
          deducted for (i) interest expense, (ii) total federal, state, local
          and foreign income, value added and similar taxes, and (iii)
          depreciation and amortization expense, all as determined in accordance
          with GAAP; or

     (c)  Until such time Maker's final annual audited financial statements are
          available and the calculations required in subparagraph 1(b) above
          have been made.

2.   Taking of Enforcement Action. Until such time as all amounts owing under
     the Senior Debt are indefesibly paid in full, and notwithstanding any right
     or remedy available to Junior Creditors under any of the agreements with
     respect to the Subordinated Debt ("Junior Creditor Agreements"), applicable
     law or otherwise, Junior Creditors shall not, directly or indirectly take
     any of the following actions:

     (a)  accelerate this Note or any of the Subordinated Debt unless and until
          the Senior Debt shall have been accelerated;

     (b)  seek to collect from Maker (including, without limitation, from or
          against any property which is part of Maker's assets securing the
          Subordinated Debt or the Senior Debt ("Collateral")) any of the
          subordinated Debt; or exercise any of its rights or remedies upon a
          default by Maker under the Junior Creditor Agreements or otherwise;

     (c)  seek to assert any claim or interest in any Collateral;

     (d)  commence, prosecute or participate in any administrative, legal or
          equitable action or proceeding against Maker or its properties seeking
          any reorganization, arrangement, composition, readjustment,
          liquidation, bankruptcy or any other action involving the readjustment
          of all or any part of Maker's obligations, or other similar relief
          under the U.S. Bankruptcy Code or any present or future statute, law
          or regulation relative to either Maker or its properties or any
          proceedings for voluntary liquidation, dissolution or other winding up
          of Maker's businesses or the appointment of any trustee, receiver or
          liquidator for Maker or any part of its properties or any assignment
          for the benefit of creditors or any marshalling of assets of Maker; or

     (e)  take any other action against Maker or the Collateral, or otherwise
          directly or

<PAGE>

          indirectly interfere with any Collateral or Senior Creditor's rights
          and interest therein and thereto.

3.   Liquidation; Dissolution; Bankruptcy. Upon any distribution to creditors of
     Maker in a liquidation, dissolution, winding up or reorganization, or in a
     bankruptcy, reorganization, insolvency, receivership or similar proceeding
     relating to Maker or its property:

     (a)  Holders of the Senior Debt shall be entitled to receive indefeasible
          payment in full in cash of the principal of, and interest (including,
          without limitation, interest accruing after the commencement of any
          such proceeding) and other amounts payable through the date of payment
          on, the Senior Debt before any Junior Creditors shall be entitled to
          receive any payment of indebtedness evidenced by the Subordinated Debt
          and any payment of principal of (and premium, if any) and interest on
          any Subordinated Debt (whether or not there has been at that time a
          default in the Senior Debt); and

     (b)  Until the Senior Debt is indefeasibly paid in full in cash, any
          distribution to which any Junior Creditors would be entitled but for
          these subordination provisions, shall be made to the Senior Creditors
          (whether or not there has been at that time a default in the Senior
          Debt).

4.   Payment Over of Payments or Distributions. In the event any payments of
     principal or interest is made to any Junior Creditors that because of these
     subordination provisions should not have been made to them, or in the event
     of any distribution, division, or application, partial or complete,
     voluntary or involuntary, by operation of law or otherwise, of all or any
     part of the assets of Maker or the proceeds thereof to the creditors of
     Maker or readjustment of the obligations and indebtedness of Maker, whether
     by reason of liquidation, bankruptcy, arrangement, receivership, assignment
     for the benefit of creditors, marshalling of assets of Maker or any other
     action or proceeding involving the readjustment of all or any part of the
     Subordinated Debt or the application of the assets of Maker to the payment
     or liquidation thereof, or upon the dissolution or other winding up of
     Maker's business, or upon the sale of all or substantially all of Maker's
     assets, then, and in any such event, Junior Creditors agree that:

     (a)  Senior Creditor shall first receive indefeasible payment in full in
          cash of all of the Senior Debt (including, without limitation,
          interest after the commencement of any such liquidation, dissolution
          or bankruptcy at the rate specified in the applicable Senior Debt,
          whether or not such interest is an allowable claim in any such
          proceeding), and

     (b)  Senior Creditor shall be entitled to receive any payment or
          distribution of any kind or character, whether in cash, securities or
          other property, (including, without limitation, interest after the
          commencement of any such liquidation, dissolution or bankruptcy at the
          rate specified in the applicable Subordinated Debt, whether or not
          such interest is an allowable claim in any such proceeding) which
          would be payable or deliverable in respect of any or all of the
          Subordinated Debt.

<PAGE>

     (c)  In order to enable Senior Creditor to enforce its rights hereunder,
          Senior Creditor is hereby irrevocably authorized and empowered (in its
          own name or in the name of Junior Creditors or otherwise), but shall
          have no obligation to:

          (i)  enforce claims comprising any of the Subordinated Debt by proof
               of debt, proof of claim, suit or otherwise;

          (ii) demand, sue for, collect and receive any assets of Maker
               distributed, divided or applied by way of payment, or any other
               property or interest issued, on account of any of the
               Subordinated Debt and apply the same, or the proceeds of any
               realization upon the same, to any of the Senior Debt;

         (iii) vote any claims comprising any of the Subordinated Debt to
               accept or reject any plan of partial or complete liquidation,
               reorganization, arrangement, composition or extension; and/or

          (iv) take generally any action which Junior Creditors might otherwise
               be entitled to take, as Senior Creditor may deem necessary or
               advisable for the enforcement of its rights or interests
               hereunder.

     (d)  To the extent necessary for Senior Creditor to realize the benefits of
          the subordination of the Subordinated Debt provided for herein
          (including the right to receive any and all payments and distributions
          which might otherwise be payable or deliverable with respect to the
          Subordinated Debt in any proceeding described in this Section 4 or
          otherwise), Junior Creditors will execute and deliver to Senior
          Creditor such instruments or documents (together with such assignments
          or endorsements as Senior Creditor shall deem necessary), as may be
          reasonably requested by Senior Creditor.

     (e)  Any such payments or distributions or security or instruments or the
          proceeds thereof shall be received and held by the Junior Creditors in
          trust, as trustee, for the benefit of the Senior Creditor, segregated
          from other funds and property of the Junior Creditors and the Junior
          Creditors shall forthwith deliver the same to the Senior Creditor
          (together with any endorsement or assignment of Junior Creditors where
          necessary), for application to any of the Senior Debt. In the event of
          the failure of the Junior Creditors to make any such endorsement or
          assignment to the Senior Creditor, the Senior Creditor, or any of its
          officers or employees, are hereby irrevocably authorized on behalf of
          Junior Creditors to make such endorsement.

5.   No Contest of Senior Creditor Liens/Priority. Junior Creditors agree that
     they shall not contest the validity, perfection priority or enforceability
     of the liens granted to or held by the Senior Creditor upon the Collateral
     and that, as between the Senior Creditor and the Junior Creditors, the
     terms of these Subordination Provisions shall govern even if part or all of
     the Senior Debt or the liens securing payment and performance thereof are
     avoided, disallowed, set aside or otherwise invalidated in any judicial
     proceeding or otherwise.

<PAGE>

     Notwithstanding the time, order, or method of attachment or perfection of
     the pledges, liens or security interests granted thereby or the time or
     order of filing or recording of financing statements or other evidence of
     pledges, liens or security interests, and notwithstanding anything
     contained in any such filing or agreement to which the Senior Creditor
     and/or the Junior Creditors may now or hereafter be a party, the pledges
     of, security interests in, and other liens upon the Collateral granted to
     or held by the Senior Creditor have and shall have priority over the
     pledges of, security interests in, and other liens upon the Collateral
     granted to, or held by, the Junior Creditors, and the liens of the Senior
     Creditor therein shall have such priorities to the full extent of the
     Senior Debt secured thereby at any time and from time to time outstanding.

6.    Defined Terms:

     "Senior Debt" means (a) all principal, interest, loan fees, Certificate
     purchase obligations of Village Farms, L.P., Funding Losses, Additional
     Costs, indemnification obligations, attorneys' fee payment obligations, and
     all expenses, charges and other amounts payable by Maker pursuant to the
     Guaranty to CoBank ACB of the obligations of Village Farms, L.P. under the
     Consolidated, Amended and Restated Loan Agreement ("CoBank Loan Agreement")
     dated as of January 2, 2000, by and between CoBank, ACB and Village Farms,
     L.P., and any related notes, any related security agreements and any other
     related documents, all as now in effect or as amended from time to time;
     and (b) any and all renewals, extensions, refundings, amendments and
     modifications of any of the foregoing.

7.   CoBank, ACB shall be deemed to be a third party beneficiary of the
     foregoing subordination provisions.

<PAGE>

     IN WITNESS WHEREOF, the undersigned has duly caused this Promissory
Note to be executed and delivered as of the date first written above.

                                           ECOSCIENCE CORPORATION

                                      By:
                                          -------------------------------------
                                      Name:
                                      Title:

<PAGE>

                                                                Promissory Note
                                                                     Schedule I

                               LOANS AND PAYMENTS

                                                 Unpaid
                        Principal    Interest    Principal        Notations
Date                    Payments     Payment     Balance          Made by
---------------------- ------------ ----------- ---------------- ---------------AMENDMENT AND ASSUMPTION AGREEMENT
                   ----------------------------------

     AMENDMENT AND ASSUMPTION AGREEMENT (this "Agreement") dated as of March __,
2000 by and between AGRO DYNAMICS, INC. ("ADI"), ECOSCIENCE PRODUCE SYSTEMS
CORPORATION ("EPSC"), AGRO-DAN, INC. ("Agro-Dan") and CENTURY BUSINESS CREDIT
CORPORATION, a Subsidiary of The Foothill Group, Inc. ("Lender").

                                   BACKGROUND
                                   ----------

     ADI, EPSC and Lender are parties to a Loan and Security Agreement dated as
of June 29, 1999 (as same has been amended, supplemented, restated or otherwise
modified from time to time, the "Loan Agreement") pursuant to which Lender
provides ADI and EPSC with certain financial accommodations.

     Pursuant to the terms of a Joint Venture Agreement dated as of January 12,
2000 ("Joint Venture Agreement") among ADI, Ecoscience Corporation and Grodania
A/S, a substantial portion of the assets of ADI will be transferred to Agro-Dan,
a newly formed Delaware corporation, and Agro-Dan shall assume all of ADI's
obligations to Lender under the Loan Agreement and the Ancillary Agreements
including, without limitation, the documents listed on Exhibit A attached hereto
(the Loan Agreement and the Ancillary Agreements, collectively, "Assigned
Documents").

     In connection with the transactions contemplated by the Joint Venture
Agreement, all of ADI's rights and obligations under the Assigned Documents
shall automatically become the rights and obligations of Agro-Dan and Agro-Dan
shall have the benefit of all the rights of ADI and be bound by all the
obligations of ADI to Lender under the Assigned Documents, in each case on the
terms and conditions set forth in this Agreement.

     NOW, THEREFORE, in consideration of the foregoing and for other valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, ADI,
EPSC and Agro-Dan hereto agree as follows:

     1.   All capitalized terms used herein that are not defined shall have the
meanings given to them in the Loan Agreement.

     2.   Agro-Dan hereby assumes in full, the payment, discharge, satisfaction
and performance of all Obligations of ADI and all other obligations,
indebtedness and liabilities of ADI to Lender under the Assigned Documents and
Agro-Dan acknowledges that it is liable for the payment, discharge, satisfaction
and performance of all Obligations. Without limiting the generality of the
foregoing, in order to secure the prompt payment and performance to Lender of
the Obligations, Agro-Dan hereby assigns, pledges and grants to Lender a
continuing security interest in and to all of the Collateral, whether now owned
or existing or hereafter acquired or arising and wheresoever located. Nothing in
this Amendment shall impair, limit or affect the liens and security interest
heretofore granted, pledged and/or assigned to Lender by ADI as

<PAGE>

security for the Obligations. Agro-Dan hereby adopts all of the provisions,
terms and conditions contained in the Assigned Documents as if the Assigned
Documents had been entered into by and between Agro-Dan and Lender.

     3.   ADI and Agro-Dan hereby acknowledge that each will from time to time
after the execution hereof, upon request of Lender, execute and deliver to
Lender such further instruments, agreements and documents, and take such further
action as Lender may request in connection with the transactions herein
contemplated.

     4.   Subject to satisfaction of the conditions precedent set forth in
Section 6 below, Lender hereby consents to the formation of Agro-Dan and
the execution of the Joint Venture Agreement by the parties thereto and the
transactions contemplated therein and waives any Event of Default arising out of
the formation of Agro-Dan or the execution of or consummation of the
transactions contemplated by the Joint Venture Agreement.

     5.   The Loan Agreement is hereby amended as follows:

     (a)  The defined terms "Borrower" and "Borrowers" are amended to read
          Agro-Dan.

     (b)  Paragraph 1(a) is amended as follows:

          (i)  The following defined terms are inserted in the appropriate
               alphabetical order:

                    "Agro-Dan" means Agro-Dan, Inc., a corporation organized
                    under the laws of the State of Delaware.

                    "EPSC" means EcoScience Produce Systems Corporation, a
                    corporation organized under the laws of the State of
                    Delaware.

                    "Joint Venture Agreement" means the Joint Venture Agreement
                    among ADI, Ecoscience Corporation and Grodania A/S.

         (ii)  The following defined terms are amended in their entirety to
               provide as follows:

                    "Borrowing Agent" means Agro-Dan.

                    "Eligible Inventory" means Inventory of each Borrower and
ADC Inventory which the Lender, in its sole and absolute discretion, exercised
in a commercially reasonable manner, determines: (a) is subject to the security
interest of Lender and is subject to no other liens or encumbrances whatsoever
(other than Permitted Liens); (b) is in good condition and meets all standards
imposed by any governmental agency, or department or division thereof having
regulatory authority over such Inventory, its use or sale including but not
limited to the Federal Fair Labor Standards Act of 1938 as amended, and all
rules, regulations and orders

                                       2

<PAGE>

thereunder; (c) is currently either usable or salable in the normal course
of each Borrower's or ADC's business; (d) does not represent Inventory received
from suppliers of ADC within the immediately preceding thirty (30) day period
unless such Inventory has been paid for; and (e) not to be ineligible for any
other reason.

                    "Eligible Receivables" means and includes each Receivable of
each Borrower and each ADC Receivable which conforms to the following criteria:
(a) shipment of the merchandise or the rendition of services has been completed;
(b) no return, rejection or repossession of the merchandise has occurred; (c)
merchandise or services shall not have been rejected or disputed by the Customer
and there shall not have been asserted any offset, defense or counterclaim; (d)
continues to be in full conformity with the representations and warranties made
by Borrowers and ADC to the Lender with respect thereto; (e) Lender is, and
continues to be, satisfied with the credit standing of the Customer in relation
to the amount of credit extended; (f) there are no facts existing or threatened
which are likely to result in any adverse change in a Customer's financial
condition; (g) is documented by an invoice in a form approved by Lender and
shall not be unpaid more than ninety (90) days from invoice date; (h) less than
thirty-three percent (33%) of the unpaid amount of invoices due from such
Customer remain unpaid more than ninety (90) days from invoice date; (i) is not
evidenced by chattel paper or an instrument of any kind with respect to or in
payment of the Receivable or the ADC Receivable unless such instrument is duly
endorsed to and in possession of the Lender or represents a check in payment of
a Receivable or an ADC Receivable; (j) if the Customer is located outside of the
United States or Canada, the goods which gave rise to such Receivable or such
ADC Receivable were shipped after receipt by such Borrower or ADC, as the case
may be, from or on behalf of the Customer of an irrevocable letter of credit,
assigned and delivered to the Lender and confirmed by a financial institution
acceptable to the Lender and is in form and substance acceptable to the Lender,
payable in the full amount of the Receivable or the ADC Receivable in United
States dollars at a place of payment located within the United States; (k) such
Receivable or ADC Receivable is not subject to any lien, other than Permitted
Liens; (l) does not arise out of transactions with any employee, officer, agent,
director, stockholder or Affiliate of any Borrower or ADC; (m) is payable to
Borrower or ADC; (n) does not arise out of a bill and hold sale prior to
shipment and, if the Receivable or the ADC Receivable arises out of a sale to
any Person to which Borrower or ADC is indebted, the amount of such
indebtedness, and any anticipated indebtedness, is deducted in determining the
face amount of such Receivable or such ADC Receivable; (o) is net of any
returns, discounts, claims, credits and allowances; (p) if the Receivable arises
out of contracts between Borrower and the United States, any state, or any
department, agency or instrumentality of any of them, such Borrower has so
notified Lender, in writing, prior to the creation of such Receivable, and, if
Lender so requests, there has been compliance with any governmental notice or
approval requirements, including without limitation, compliance with the Federal
Assignment of Claims Act; (q) is a good and valid account representing the
undisputed portion of a bona fide indebtedness incurred by the Customer therein
named, for a fixed sum as set forth in the invoice relating thereto with respect
to an unconditional sale and delivery upon the stated terms of goods sold by
Borrower, or work, labor and/or services rendered by Borrower or ADC; (r) the
total unpaid Receivables from such Customer does not exceed twenty percent (20%)
of all Eligible Receivables; (s) does not arise out of progress billings prior
to completion of the order; and (t) is otherwise satisfactory to the Lender as
determined in good faith by the Lender in the reasonable exercise of its
discretion.

                                       3

<PAGE>

                    "Equipment" means and includes all of each Borrower's,
EPSC's and ADI's now owned or hereafter acquired equipment, machinery and goods
(excluding Inventory), whether or not constituting fixtures, including, without
limitation: plant and office equipment, tools, dies, parts, data processing
equipment, furniture and trade fixtures, trucks, trailers, loaders and other
vehicles and all replacements and substitutions therefore and all accessions
thereto.

                    "General Intangibles" means and includes all of each
Borrower's, EPSC's and ADI's now owned or hereafter acquired general intangibles
including, without limitation, trademarks, tradenames, tradestyles, trade
secrets, equipment formulation, manufacturing procedures, quality control
procedures, product specifications, patents, patent applications, copyrights,
registrations, contract rights, choses in action, causes of action, corporate or
other business records, inventions, designs, goodwill, claims under guarantees,
licenses, franchises, tax refunds, tax refund claims, computer programs,
computer data bases, computer program flow diagrams, source codes, object codes
and all other intangible property of every kind and nature.

                    "Guarantor" means individually ADC, ADI, EPSC and any other
Person who may hereafter guarantee payment or performance of the whole or any
part of the Obligations and "Guarantors" means collectively all such Persons.

                    "Individual Formula Amount" means at the date of
determination thereof, an amount equal to:

     (a)  Receivables Availability of Agro-Dan and ADC, plus

     (b)  Inventory Availability of Agro-Dan and ADC, minus

     (c)  such reserves as Lender may reasonably deem proper and necessary from
          time to time.

                    "Inventory" means and includes all of each Borrower's,
EPSC's and ADI's now owned or hereafter acquired goods, merchandise and other
personal property, wherever located, to be furnished under any contract of
service or held for sale or lease, all raw materials, work in process, finished
goods and materials and supplies of any kind, nature or description which are or
might be used or consumed in such Borrower's, EPSC's and ADI's business or used
in selling or furnishing such goods, merchandise and other personal property,
and all documents of title or other documents representing them.

                    "Inventory Availability" means the amount of Revolving
Credit Advances against Eligible Inventory, Lender may from time to time during
the Term make available to each Borrower up to the lesser of (a) up to fifty
percent (50%) of the value of such Borrower's Eligible Inventory (calculated on
the basis of the lower of cost or market, on a first-in first-out basis) or (b)
fifty percent (50%) of the amount of such Borrower's Receivables Availability.
The Eligible Inventory of ADC shall be included for the purpose of determining

                                 4

<PAGE>

the Eligible Inventory of Agro-Dan and the Eligible Receivables of ADC
shall be included for the purposes of determining the Eligible Receivables of
Agro-Dan.

                    "Receivables" means and includes all of each Borrower's,
EPSC's and ADI's now owned or hereafter acquired accounts and contract rights,
instruments, insurance proceeds, documents, chattel paper, letters of credit and
each Borrower's, EPSC's and ADI's rights to receive payment thereunder, any and
all rights to the payment or receipt of money or other forms of consideration of
any kind at any time now or hereafter owing or to be owing to any Borrower, EPSC
or ADI, all proceeds thereof and all files in which any Borrower, EPSC or ADI
has any interest whatsoever containing information identifying or pertaining to
any of such Borrower's, EPSC's or ADI's Receivables, together with all of each
Borrower's, EPSC's or ADI's rights to any merchandise which is represented
thereby, and all of each Borrower's, EPSC's or ADI's right, title, security and
guaranties with respect to each Receivable, including, without limitation, all
rights of stoppage in transit, replevin and reclamation and all rights as an
unpaid vendor.

                    "Receivables Availability" means the amount of Revolving
Credit Advances against Eligible Receivables Lender may from time to time during
the term of this Agreement make available to each Borrower up to eighty-five
percent (85%) of the net face amount of Eligible Receivables of such Borrower.
The Eligible Receivables of ADC shall be included for the purposes of
determining the Eligible Receivables of Agro-Dan.

     (c)  Paragraph 6 is amended in its entirety to provide as follows:

         "6.   Security Interest.

         (a)   To secure the prompt payment to Lender of the Obligations, each
Borrower, EPSC and ADI hereby assigns, pledges and grants to Lender a continuing
security interest in and to the Collateral, whether now owned or existing or
hereafter acquired or arising and wheresoever located, whether or not the same
is subject to Article 9 of the UCC; provided, however, the foregoing grant of a
security interest and lien shall not include any rights or interests of any
Borrower, EPSC or ADI under any licenses, leases or other contracts if and to
the extent that (i) the terms of the agreement or agreements creating or
evidencing such rights or interests prohibit such grant and (ii) the term
prohibiting such grant is effective as a matter of law and has not been waived
or the consent of the necessary party to the grant to Lender has not been
obtained; provided, further, (x) if any such prohibition is subsequently lifted,
terminated or is otherwise no longer effective as a matter of law or is waived
or the consent of the necessary party is obtained, a security interest therein
in favor of Lender shall automatically arise hereunder without any further
action on the part of any Borrower, EPSC, ADI or Lender and (y) nothing
contained herein shall be deemed to limit, impair or otherwise affect Lender's
security interest in any rights or interests of any Borrower, EPSC or ADI in or
to monies due or to become due under any such agreement. All of Borrowers',
EPSC's and ADI's ledger sheets, files, records, books of account, business
papers and documents relating to the Collateral shall, until delivered to or
removed by Lender, be kept by Borrowers, EPSC and ADI in trust for Lender until
all Obligations have been paid in full. Each confirmatory assignment schedule or

                                       5

<PAGE>

other form of assignment hereafter executed by Borrowers, EPSC and ADI shall be
deemed to include the foregoing grant, whether or not the same appears therein.

         (b)   Lender may file one or more financing statements disclosing
Lender's security interest in the Collateral without a Borrower's, EPSC's
or ADI's signature appearing thereon or Lender may sign on a Borrower's, EPSC's
or ADI's behalf as provided in paragraph 13 hereof. The parties agree that a
carbon, photographic or other reproduction of this Agreement shall be sufficient
as a financing statement. If any Receivable or any ADC Receivable becomes
evidenced by a promissory note or any other instrument for the payment of money,
the applicable Borrower, EPSC or ADI will or will cause ADC to immediately
deliver such instrument to Lender appropriately endorsed."

     (d)  Paragraph 7 is amended in its entirety to provide as follows:

         "7.   Representations Concerning the Collateral. Each Borrower, ESPC
and ADI represents and warrants (each of which such representations and
warranties shall be deemed repeated upon the making of each request for a
Revolving Credit Advance and made as of the time of each and every Revolving
Credit Advance hereunder):

         (a)   each Borrower, EPSC and ADI owns its respective Collateral free
and clear of all claims, liens, security interests and encumbrances
(including without limitation any claims of infringement) except (A) those in
Lender's favor and (B) Permitted Liens;

         (b)   none of the Collateral is subject to any agreement prohibiting
the granting of a security interest or requiring notice of or consent to
the granting of a security interest; and

         (c)   all Receivables and ADC Receivables (i) represent complete bona
fide transactions which require no further act under any circumstances on
the applicable Borrower's, EPSC's or ADC's part to make such Receivables or ADC
Receivables payable by the Customers, (ii) to the best of each Borrower's,
EPSC's and ADI's knowledge, are not subject to any present, future or contingent
offsets or counterclaims, and (iii) do not represent bill and hold sales,
consignment sales, guaranteed sales, sale or return or other similar
understandings or obligations of any Affiliate or Subsidiary of any Borrower,
EPSC or ADI."

     (e)  Paragraph 8 is amended in its entirety to provide as follows:

         "8.   Covenants Concerning the Collateral. During the Term, each
Borrower, EPSC and ADI covenants that it shall:

         (a)   not dispose of any of the Collateral whether by sale, lease or
otherwise except for (i) the sale of Inventory in the ordinary course of
business, and (ii) the disposition or transfer in the ordinary course of
business during any fiscal year of obsolete and worn-out Equipment having an
aggregate fair market value for all Borrower's, EPSC and ADI of not more than
$100,000 and only to the extent that (x) the proceeds (if any) of any such
disposition are used to acquire replacement Equipment which is subject to
Lender's first priority

                                       6

<PAGE>

security interest or (y) the proceeds (if any) of which are remitted to
Lender in reduction of the Obligations;

         (b)   not encumber, mortgage, pledge, assign or grant any security
interest in any Collateral or any other assets of Borrowers, EPSC or ADI to
anyone other than Lender and except for Permitted Liens;

         (c)   place notations upon each Borrower's, EPSC's or ADI's books of
account and any financial statement prepared by each such entity to
disclose Lender's security interest in the Collateral;

         (d)   keep and maintain the Equipment in good operating condition,
except for ordinary wear and tear, and except for obsolete and worn-out
equipment, shall make all necessary repairs and replacements thereof so that the
value and operating efficiency shall at all times be maintained and preserved.
No Borrower shall and neither EPSC nor ADI shall permit any such items to become
a fixture to real estate or accessions to other personal property;

         (e)   not extend the payment terms of any Receivable beyond thirty (30)
days from invoice date without prompt notice thereof to Lender;

         (f)   perform all other steps requested by Lender to create and
maintain in Lender's favor a valid perfected first security interest in all
Collateral (except for Permitted Liens);

         (g)   defend the Collateral against the claims and demands of al
parties; and

         (h)   cause at least annually, an appraisal to be performed by an
appraiser satisfactory to Lender, of the Inventory of Borrowers and the ADC
Inventory and Lender shall have the right based upon such appraisal to decrease
the amount to the amount of Inventory availability to an amount not greater than
eighty (80%) of the auction value of the Inventory of Borrowers and ADC
Inventory which is acceptable to Lender and on which Lender has a first
perfected security interest as set forth such appraisal."

     (f)  Paragraph 10 is amended in its entirety to provide as follows:

          "10.  Inspections.  At all times during normal business hours, Lender
shall have the right to (a) visit and inspect Borrowers', EPSC's and ADI's
properties and the Collateral, (b) upon reasonable notice to Borrowing Agent,
inspect, audit and make extracts from Borrowers', EPSC's and ADI's relevant
books and records, including, but not limited to, management letters prepared by
independent accountants, provided, that no notice shall be required if an
Incipient Event of Default or Event of Default shall have occurred or if Lender
at any time deems itself insecure or shall fear the diminution in value of the
Collateral, and (c) discuss with Borrowers', EPSC's and ADI's principal
officers, and independent accountants, Borrowers', EPSC's and ADI's business,
assets, liabilities, financial condition, results of operations and business
prospects. Borrowers, EPSC and ADI will deliver to Lender any

                                       7

<PAGE>

instrument necessary for Lender to obtain records from any service bureau
maintaining records for Borrowers, EPSC and ADI."

     (g)  Paragraph 11 is amended in its entirety to provide as follows:

         "11.  Financial Information.  Borrowers shall provide Lender (a) as
soon as available, but in any event within ninety (90) days after the end
of each of Borrowers', EPSC's and ADI's fiscal years, a balance sheet of each
Borrower, EPSC, ADI and ADC as at the end of such fiscal year and the related
statements of income, retained earnings and changes in cash flow for such fiscal
year, setting forth in comparative form the figures as at the end of and for the
previous fiscal year, which shall have been reported on by independent certified
public accountants who shall be satisfactory to Lender and shall be accompanied
by an unqualified audit report issued by such independent certified public
accountants; (b) as soon as available, drafts of the balance sheet of each
Borrower, EPSC, ADI and ADC as at the end of each of Borrowers', EPSC's, ADI's
and ADC's fiscal years and the related statements of income, retained earnings
and changes in cash flow for such fiscal year, which have been internally
prepared by Borrowers, EPSC, ADI or ADC, as the case may be; (c) as soon as
available, but in any event within thirty (30) days after the close of each
month, the balance sheet as at the end of such month and the related statements
of income, retained earnings and changes in cash flow for such month, which have
been internally prepared by Borrowers, EPSC, ADI or ADC, as the case may be. All
financial statements required under (a), (b) and (c) above shall be prepared in
accordance with GAAP, subject to year-end adjustments in the case of monthly and
quarterly statements. Together with the financial statements furnished pursuant
to (a) above, Borrowers, EPSC and ADI shall and shall cause ADC to, deliver a
certificate of Borrowers', EPSC's, ADI's or ADC's certified public accountants
addressed to Lender stating that (i) they have caused this Agreement, the
Ancillary Agreements and the Guaranty Security Agreements to be reviewed and
(ii) in making the examination necessary for the issuance of such financial
statements, nothing has come to their attention to lead them to believe that any
Event of Default or Incipient Event of Default exists and, in particular, they
have no knowledge of any Event of Default or Incipient Event of Default or, if
such is not the case, specifying such Event of Default or Incipient Event of
Default and its nature, when it occurred and whether it is continuing. At the
times the financial statements are furnished pursuant to (a), (b) and (c) above,
a certificate of each Borrower's, EPSC's, ADI's and ADC's President or Chief
Financial Officer shall be delivered to Lender stating that, based on an
examination sufficient to enable him to make an informed statement, no Event of
Default or Incipient Event of Default exists, or, if such is not the case,
specifying such Event of Default or Incipient Event of Default and its nature,
when it occurred, whether it is continuing and the steps being taken by
Borrowers with respect to such event. In addition, Borrowers, EPSC and ADI shall
provide Lender, as soon as available, copies of all proxy statements, financial
statements and reports which any Borrower, EPSC, ADI, ADC or EcoScience sends to
its shareholders and holders of its Indebtedness and copies of any and all
periodic and special reports, as well as all registration statements which any
Borrower, EPSC, ADI, ADC or EcoScience files with the Securities and Exchange
Commission."

     (h)  The first paragraph of Paragraph 12 is amended in its entirety to
provide as follows:

                                       8

<PAGE>

         "12.  Additional Representations, Warranties and Covenants.  Each
Borrower, EPSC and ADI represents, warrants (each of which such
representations and warranties shall be deemed repeated upon the making of a
request for a Revolving Credit Advance and made as of the time of each Revolving
Credit Advance made hereunder), and covenants that:"

     (i)  Paragraphs 12(a), (b) and (c) are amended in their entirety to provide
as follows:

          "(a) (i) each Borrower, ESPC and ADI is a corporation duly organized
and validly existing under the laws of the states listed on Exhibit 12(a),
(ii) each Borrower, EPSC and ADI is duly qualified and in good standing in every
other state or jurisdiction in which the nature of such Borrower's, EPSC's or
ADI's business requires such qualification and (iii) ADC is a wholly owned
Subsidiary of Agro-Dan;

          (b)  the execution, delivery and performance of this Agreement and
the Ancillary Agreements (i) have been duly authorized, (ii) are not in
contravention of such Borrower's, EPSC's or ADI's certificate of incorporation,
by-laws or of any indenture, agreement or undertaking to which such Borrower,
EPSC or ADI is a party or by which such Borrower or ADI is bound except where
the failure to qualify would not have a material adverse effect on the business,
assets, operations, prospects or financial or other condition of Borrower, EPSC
or ADI or the ability of such party to perform the Obligations and (iii) are
within such Borrower's, EPSC's or ADI's corporate powers;

          (c)  this Agreement and the Ancillary Agreements executed and
delivered by each Borrower, EPSC and ADI are such Borrower's, EPSC's or
ADI's legal, valid and binding obligations, enforceable in accordance with their
terms;"

     (j)  The following paragraph is inserted at the end of Paragraph 12:

         "(r)  Lender has received complete copies of the Joint Venture
Agreement (including all exhibits, schedules and disclosure letters
referred to therein or delivered pursuant thereto, if any) and all amendments
thereto waivers relating thereto and other side letters or agreements affecting
the terms thereof. None of such documents and agreements has been amended or
supplemented, nor have any of the provisions thereof been waived, except
pursuant to a written agreement or instrument which has heretofore been
delivered to Lender. Borrower, EPSC and ADI shall enforce all of its rights
under the Joint Venture Agreement and the executed in connection therewith
including, but not limited to, all indemnification rights and pursue all
remedies available to it with diligence and in good faith in connection with the
enforcement of any such rights."

     (k)  Paragraph 13 is amended in its entirety to provide as follows:

          "13. Power of Attorney.  Each Borrower, EPSC and ADI hereby appoints
Lender or any other Person whom Lender may designate as such Borrower's,
EPSC's or ADI's attorney, with power to: (i) endorse such Borrower's, EPSC's or
ADI's name on any

                                       9

<PAGE>

checks, notes, acceptances, money orders, drafts or other forms of payment
or security that may come into Lender's possession; (ii) sign such Borrower's,
EPSC's or ADI's name on any invoice or bill of lading relating to any
Receivables, drafts against customers, schedules and assignments of Receivables,
notices of assignment, financing statements and other public records,
verifications of account and notices to or from customers; (iii) verify the
validity, amount or any other matter relating to any Receivable by mail,
telephone, telegraph or otherwise with account debtors; (iv) execute customs
declarations and such other documents as may be required to clear Inventory
through Customs; (v) do all things necessary to carry out this Agreement, any
Ancillary Agreement and all related documents; and (vi) on or after the
occurrence and continuation of an Event of Default, notify the post office
authorities to change the address for delivery of such Borrower's, EPSC's or
ADI's mail to an address designated by Lender, and to receive, open and dispose
of all mail addressed to such Borrower. Each Borrower, EPSC and ADI hereby
ratifies and approves all acts of the attorney. Neither Lender nor the attorney
will be liable for any acts or omissions or for any error of judgment or mistake
of fact or law. This power, being coupled with an interest, is irrevocable so
long as any Receivable which is assigned to Lender or in which Lender has a
security interest remains unpaid and until the Obligations have been fully
satisfied."

     (l)  Paragraph 19 is amended in its entirety to provide as follows:

          "19. Remedies.  Upon the occurrence of an Event of Default pursuant
to paragraph 18(k) herein, all Obligations shall be immediately due and
payable and this Agreement shall be deemed terminated; upon the occurrence and
continuation of any other of the Events of Default, Lender shall have the right
to demand repayment in full of all Obligations, whether or not otherwise due.
Until all Obligations have been fully satisfied, Lender shall retain its
security interest in all Collateral. Lender shall have, in addition to all other
rights provided herein, the rights and remedies of a secured party under the
UCC, and under other applicable law, all other legal and equitable rights to
which Lender may be entitled, including without limitation, the right to take
immediate possession of the Collateral, to require Borrowers, EPSC and ADI to
assemble the Collateral, at Borrowers', EPSC's or ADI's expense, and to make it
available to Lender at a place designated by Lender which is reasonably
convenient to both parties and to enter any of the premises of any Borrower,
EPSC or ADI or wherever the Collateral shall be located, with or without force
or process of law, and to keep and store the same on said premises until sold
(and if said premises be the property of a Borrower, EPSC or ADI, such Borrower,
EPSC and ADI agrees not to charge Lender for storage thereof), and the right to
apply for the appointment of a receiver for any Borrower's, EPSC's or ADI's
property. Further, Lender may, at any time or times after default by any
Borrower, EPSC or ADI sell and deliver all Collateral held by or for Lender at
public or private sale for cash, upon credit or otherwise, at such prices and
upon such terms as Lender, in Lender's sole discretion, deems advisable or
Lender may otherwise recover upon the Collateral in any commercially reasonable
manner as Lender, in its sole discretion, deems advisable. The requirement of
reasonable notice shall be met if such notice is mailed postage prepaid to
Borrowing Agent's address as shown in Lender's records, at least ten (10) days
before the time of the event of which notice is being given. Lender may be the
purchaser at any sale, if it is public. In connection with the exercise of the
foregoing remedies, Lender is granted permission to use all of Borrowers'
trademarks, tradenames, tradestyles, patents, patent applications, licenses,
franchises and other proprietary rights which are used in connection with

                                       10
<PAGE>

(a) Inventory for the purpose of disposing of such Inventory and (b)
Equipment for the purpose of completing the manufacture of unfinished goods. The
proceeds of sale shall be applied first to all costs and expenses of sale,
including attorneys' fees, and second to the payment (in whatever order Lender
elects) of all Obligations. Lender will return any excess to Borrowers and
Borrowers shall remain liable to Lender for any deficiency. In addition to all
other sums due to Lender, Borrowers shall pay Lender, for costs and expenses
incurred by Lender for internal collection efforts to obtain or enforce payment
of Receivables and the ADC Receivables, an amount equal to fifteen percent (15%)
of the net face amount of any Receivables and ADC Receivables collected."

     (m)  Paragraph 25 is amended to include the following at the end thereof:

          "If to ADI: To Borrowing Agent as set forth above."

          If to EPSC: To Borrowing Agent as set forth above."

     (n)  Exhibit 12(a) is replaced with the corresponding exhibit to this
          Agreement.

     6.   This Agreement shall become effective upon satisfaction of the
following conditions precedent, each in a manner satisfactory to Century
and pursuant to agreements in form and substance satisfactory to Century :

          (a)  Lender shall have received this Agreement duly executed by ADI,
EPSC and Agro-Dan;

          (b)  Lender shall have received a fee in the amount of $10,000 which
shall be charged to Borrower's account on the effective date of this
Agreement.

          (c)  Lender shall have received final executed copies of the Joint
Venture Agreement and all related agreements, documents and instruments as
in effect o the effective date of this Agreement and the transactions
contemplated by such documentation shall be consummated concurrently with the
execution of this Agreement.

          (d)  Lender shall have received a copy of the resolutions in form
and substance reasonably satisfactory to Lender, of the board of directors
of Agro-Dan authorizing (x) the execution, delivery and performance of the
Agreement, and (y) the granting by Agro-Dan of the liens upon the Collateral
certified by the Secretary or an Assistant Secretary of Agro-Dan as of the date
of this Agreement; and, such certificate shall state that the resolutions
thereby certified have not been amended, modified, revoked or rescinded as of
the date of such certificate;

          (e)  Lender shall have received a copy of the certificate of
incorporation of Agro-Dan, and all amendments thereto, certified by the
Secretary of State or other appropriate official of its jurisdiction of
incorporation together with copies of the by-laws

                                       11

<PAGE>

of Agro-Dan certified as accurate and complete by the Secretary or an
Assistant Secretary of Agro-Dan;

          (f)  Lender shall have received the executed legal opinion of
Giordano, Halleran and Ciesla in form and substance satisfactory to Lender
regarding the due authorization, enforceability and validity of this Agreement
and the transactions contemplated herein;

          (g)  Lender shall have received in form and substance satisfactory to
Lender, certified copies of Agro-Dan's casualty insurance policies,
together with loss payable endorsements on Lender's standard form of loss payee
endorsement naming Lender as loss payee, and certified copies of Agro-Dan's
liability insurance policies, together with endorsements naming Lender as a
co-insured;

          (h)  Lender shall have received a duly executed agreement
establishing accounts for Agro-Dan with financial institutions reasonably
acceptable to Lender for the collection or servicing of the Receivables and
proceeds of the Collateral of Agro-Dan;

          (i)  Lender shall have received a Guaranty Agreement from ADC, ADI
and EPSC covering the Obligations of Agro-Dan;

          (j)  Lender shall have received from ADC all such documents necessary
to maintain a perfected security interest in the ADC Collateral granted to
Lender pursuant to the Guarantor Security Agreement;

          (k)  Lender shall have received from Agro-Dan stock certificates of
ADC and stock powers with respect to ADC duly endorsed in blank; and

          (l)  Lender shall have received such other certificates, instruments,
documents and agreements as may reasonably be required by Lender in
connection with this Agreement or its counsel.

     7.   Except as expressly provided herein, all of the representations,
warranties, terms, covenants and conditions contained in the Assigned
Documents shall remain unamended and shall continue to be and shall remain in
full force and effect in accordance with their respective terms. The amendment
and waivers set forth herein shall be limited precisely as provided for herein
and shall not be deemed a waiver or modification of, or an amendment to, any
other term or provision of any Assigned Document.

     8.   This Agreement shall be governed and construed in accordance with the
laws of the State of New York.

     9.   This Agreement may be executed in one or more counterparts each of
which taken together shall constitute one and the same instrument. Any
signature delivered by a party via facsimile shall be deemed an original
signature hereto.

                                       12

<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year specified at the beginning hereof.

                                        AGRO DYNAMICS, INC.

                                        By:_______________________________
                                             Name:
                                             Title:

                                        AGRO-DAN, INC.

                                        By:_______________________________
                                             Name:
                                             Title:

                                        ECOSCIENCE PRODUCE SYSTEMS CORPORATION

                                        By:_______________________________
                                             Name:
                                             Title:

                                        CENTURY BUSINESS CREDIT
                                        CORPORATION, a Subsidiary of The
                                        Foothill Group, Inc.

                                        By:_______________________________
                                             Name:
                                             Title:

CONSENTED AND AGREED TO:

ECOSCIENCE CORPORATION

  By:________________________________
      Name:
      Title:

                                       13

<PAGE>

                                    Exhibit A
                                    ---------

1.   Supplement Letter of Credit Security Agreement dated as of June 29, 1999
     among ADI, EPSC and Lender.

2.   Trademark Collateral Security Agreement and Trademark Assignment of
     Security each dated as of June 29, 1999 by and between ADI and Lender and
     Power of Attorney dated as of June 29, 1999 made by ADI in favor of Lender.

3.   Patent Collateral Security Agreement and Patent Assignment of Security each
     dated as of June 29, 1999 by and between ADI and Lender and Power of
     Attorney dated as of June 29, 1999 made by ADI in favor of Lender.

                                       14

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