Document:

Exhibit 4.27

Exhibit 4.27

English Translation for Reference

POWER OF ATTORNEY

I, Li Juan, a citizen of the People’s Republic of China (hereinafter referred to as “China”),
with the Chinese ID card number: 420983197609010023, am a shareholder of Shenzhen Guanli
Agricultural Technology Co., Ltd. (hereinafter referred to as “Guanli”), holding 51% equity
interest of Guanli. I hereby irrevocably authorize Mr. GUANGLIN LAI to exercise the following
rights within the term of this Power of Attorney:

I authorize Mr. GUANGLIN LAI (passport number: S2630389C) to represent me with full power to
exercise any shareholder’s rights, including voting rights, to which I shall be entitled under the
laws of China and the Articles of Association of Guanli at shareholders’ meetings of Guanli,
including but without limited to execute legal documents in relation to the sale or transfer of all
or part of my equity interest in Guanli, and to act as my authorized representative at
shareholders’ meetings of Guanli to designate and appoint a general manager of Guanli.

The above authorization and designation are conditional upon Mr. GUANGLIN LAI being a director
of Agria Brother Biotech (Shenzhen) Co., Ltd. (hereinafter referred to as “Agria Brother”) and
Agria Brother granting its consent to the above authorization and designation. Once Mr. GUANGLIN
LAI leaves Agria Brother or Agria Brother notifies me of the termination of the above authorization
and designation, I will immediately withdraw the authorization and designation made herein, and
will designate and authorize any other personnel nominated by Agria Brother to exercise all my
shareholder’s rights, including voting rights, to which I shall be entitled at shareholders’
meetings of Guanli.

During the validly existing period of Guanli, except for the early termination of the
Exclusive Call Option Contract jointly signed by me, Agria Brother and Guanli for any reasons, this
Power of Attorney shall remain effective throughout the operating period of Guanli from the date
hereof.

	 	 	 	 	 
	 	 	 
	 	/s/ Li Juan
 	 
	 
	 	 	 	November 7, 2008Exhibit 4.28

Exhibit 4.28

English Translation for Reference

STATEMENT OF SPOUSE

Name: GUANGLIN LAI

Passport Number: S2630389C

This is to confirm that I, as the spouse of Li Juan, hereby unconditionally and irrevocably
represent to Shenzhen Guanli Agricultural Technology Co., Ltd. and Agria Brother Biotech (Shenzhen)
Co., Ltd. that:

the equity interest held by Li Juan in Shenzhen Guanli Agricultural Technology Co., Ltd. and
any dividends, bonuses or other distributions received by her in respect of the equity interest are
the personal property of Li Juan, and shall not be the husband-and-wife common property of Li Juan
and myself at any time.

Signature: /s/ GUANGLIN LAI

Date: November 7, 2008Exhibit 4.29

Exhibit 4.29

English Translation for Reference

LOAN CONTRACT

Party A (Lender): Agria Brother Biotech (Shenzhen) Co., Ltd.

Address: Unit 201, 2/F, Longyuan Building, Clear Water River Road, Luohu District, Shenzhen

Party B (Borrower): Li Juan with ID card number: 420983197609010023

Party A and Party B have reached the following agreement in respect of the provision of a loan by
Party A to Party B after friendly consultation:

	1.	 	Loan Amount: Party A shall lend to Party B a loan of Renminbi Ten Million And Two Hundred
Thousand (¥10,200,000).

	2.	 	Time for Loan Payment: Party A will pay the above loan to Party B within five working days
after this Contract becomes effective.

	3.	 	Term: The loan shall be for a term of three years from the date on which Party A makes the
loan payment, and may be extended upon its expiry after mutual consultation.

	4.	 	Use of the Loan: Party B undertakes that the loan will be used for investment only, and shall
be in compliance with the relevant laws and regulations. Otherwise, Party A shall have the
right to discharge this Loan Contract unilaterally and request Party B to assume the
liabilities for breach of contract.

	5.	 	Equity Pledge: All equity interests owned by Party B in Shenzhen Guanli Agricultural
Technology Co., Ltd. shall be pledged as security. In the Equity Pledge Contract dated
November 7, 2008, all obligations hereunder shall be covered in a pledge created by Party B
over its equity interests in Shenzhen Guanli Agricultural Technology Co., Ltd..

	6.	 	Liabilities for Breach of Contract: If a party violates this Contract, the other party shall
have the right to discharge it and request the defaulting party to make compensation for any
loss arising therefrom.

	7.	 	Termination of this Contract: After the termination or discharge of this Contract, Party B
shall return the loan to Party A within five working days. In the event of any late return,
Party B shall pay to Party A any interest accrued thereon at a loan interest rate stipulated
by banks for the corresponding period.

	8.	 	Dispute Resolution: Any disputes arisen during the performance of this Contract shall be
resolved by the parties through consultation. In the event that no agreement can be reached
through consultation, such dispute shall be referred to China International Economic and Trade
Arbitration Commission for arbitration. The seat of arbitration shall be Shenzhen. The
arbitral award shall be final and binding upon the parties.

	9.	 	If any provision of this Contract becomes invalid, it shall not affect the validity of the
other provisions hereof.

	10.	 	This Contract is executed in two originals and each of the parties shall keep one original.
All of them shall have the same legal effect.

	11.	 	This Contract shall become effective after it is signed and sealed by Party A and signed by
Party B.

Party A: Agria Brother Biotech (Shenzhen) Co., Ltd.

[Chop of Agria Brother Biotech (Shenzhen) Co., Ltd. is affixed]

/s/

Party B: Li Juan /s/ Li Juan

Date of execution: July 22, 2009Exhibit 4.30

Exhibit 4.30

English Translation for Reference

SUPPLEMENTAL AGREEMENT TO EXCLUSIVE CALL OPTION CONTRACT

	 	 	 
	Party A:

	 	Agria Brother Biotech (Shenzhen) Co., Ltd.
	Address:

	 	Unit 201, 2/F, Longyuan Building, Clear Water River Road, Luohu District, Shenzhen
	 
	 	 
	Party B:

	 	Li Juan, a citizen of the PRC with ID card number: 420983197609010023
	 
	 	 
	Party C:

	 	Shenzhen Guanli Agricultural Technology Co., Ltd.
	Address:

	 	Room 1501, Tower 1, Huarong Building, Mintian Road, Futian Center District, Shenzhen

WHEREAS:

Party A and Party B entered into the Exclusive Call Option Contract on November 7, 2008.

The parties have reached the following agreement after friendly consultation:

	1.	 	Article 1.3.1 of the Exclusive Call Option Contract shall be revised as follows:

When Party A exercises the Call Option, Party A shall pay to Party B Renminbi One (1) as the
purchase price (“Purchase Price”) in respect of all the equity interest, unless an appraisal
of the equity interest or other restrictions on the equity price is required by any
applicable PRC laws and regulations then in force. In addition, Party A shall waive any
repayment obligations of Party B under the two Loan Contracts entered into between Party A
and Party B on October 6, 2008 and July 22, 2009, respectively.

	2.	 	The other provisions of the Exclusive Call Option Contract shall remain unchanged.

	3.	 	This Contract shall become effective after it is signed and sealed by Party A and Party C and
signed by Party B. This Contract is executed in three originals and each of the parties shall
keep one original.

 

 

 

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Party A: Agria Brother Biotech (Shenzhen) Co., Ltd.

Legal representative/authorized representative: /s/                    

Common chop: [Chop of Agria Brother Biotech (Shenzhen) Co., Ltd. is affixed]

Party B: Li Juan

	 	 	 	 
	By:

	 	/s/ Li Juan	 

Party C: Shenzhen Guanli Agricultural Technology Co., Ltd.

Legal representative/authorized representative: /s/                    

Common chop: [Chop of Shenzhen Guanli Agricultural Technology Co., Ltd. is affixed]

Date of execution: July 22, 2009Exhibit 4.31

Exhibit 4.31

English Translation for Reference

LOAN CONTRACT

Party A (Lender): Agria Brother Biotech (Shenzhen) Co., Ltd.

Address: Unit 201, 2/F, Longyuan Building, Clear Water River Road, Luohu District, Shenzhen

Party B (Borrower): Li Juan with ID card number: 420983197609010023

Party A and Party B have reached the following agreement in respect of the provision of a loan by
Party A to Party B after friendly consultation:

	1.	 	Loan Amount: Party A shall lend to Party B a loan of Renminbi Thirty-two Million And Two
Hundred Thousand (¥32,200,000).

	2.	 	Term: The loan shall be for a term of three years from the date hereof, and may be extended
upon its expiry after mutual consultation.

	3.	 	Use of the Loan: Party B undertakes that the loan will be used for investment in Shenzhen
Guanli Agricultural Technology Co., Ltd., and shall be in compliance with the relevant laws
and regulations. Otherwise, Party A shall have the right to discharge this Loan Contract
unilaterally and request Party B to assume the liabilities for breach of contract.

	4.	 	Equity Pledge: All equity interests owned by Party B in Shenzhen Guanli Agricultural
Technology Co., Ltd. shall be pledged as security.

	5.	 	Liabilities for Breach of Contract: If a party violates this Contract, the other party shall
have the right to discharge it and request the defaulting party to make compensation for any
loss arising therefrom.

	6.	 	Termination of this Contract: After the termination or discharge of this Contract, Party B
shall return the loan to Party A within five working days. In the event of any late return,
Party B shall pay to Party A any interest accrued thereon at a loan interest rate stipulated
by banks for the corresponding period.

	7.	 	Dispute Resolution: Any disputes arisen during the performance of this Contract shall be
resolved by the parties through consultation. In the event that no agreement can be reached
through consultation, such dispute shall be referred to China International Economic and Trade
Arbitration Commission for arbitration. The seat of arbitration shall be Shenzhen. The
arbitral award shall be final and binding upon the parties.

	8.	 	If any provision of this Contract becomes invalid, it shall not affect the validity of the
other provisions hereof.

	9.	 	This Contract is executed in two originals and each of the parties shall keep one original.
All of them shall have the same legal effect.

	10.	 	This Contract shall become effective after it is signed and sealed by Party A and signed by
Party B.

Party A: Agria Brother Biotech (Shenzhen) Co., Ltd.

[Chop of Agria Brother Biotech (Shenzhen) Co., Ltd. is affixed]

/s/

Party B: Li Juan /s/ Li Juan

Date of execution: August 4, 2009

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