EXHIBIT 31.2
                            APPLIED DNA SCIENCES, INC
                  OFFICER'S CERTIFICATE PURSUANT TO SECTION 302

I, James A. Hayward, certify that:

     1.       I have reviewed this amended quarterly report on Form 10-QSB/A
              of Applied DNA Sciences, Inc.;

     2.       Based  on my  knowledge,  this  report  does  not  contain any
              untrue statement  of a  material  fact  or  omit  to  state  a
              material fact necessary to make the statements  made, in light
              of the circumstances  under which such  statements  were made,
              not misleading with  respect to  the  period  covered  by this
              report;

     3.       Based  on   my   knowledge,  the   financial  statements,  and
              other financial information  included in this  report,  fairly
              present  in  all material  respects  the financial  condition,
              results of  operations  and cash flows  of the small  business
              issuer as of, and for, the periods  presented in  this report;

     4.       The small  business  issuer's  other  certifying  officer(s)
              and  I  are  responsible  for  establishing  and   maintaining
              disclosure  controls and procedures   (as defined  in Exchange
              Act Rules  13a-15(e) and 15d-15(e)) and internal  control over
              financial  reporting  (as  defined in   Exchange    Act  Rules
              13a-15(f) and 15d-15(f))  for the small  business  issuer  and
              have:


                   (a)  Designed such disclosure  controls  and  procedures,
                        or caused such  disclosure  controls and  procedures
                        to be designed under our supervision, to ensure that
                        material information relating to the  small business
                        issuer,  including  its  consolidated  subsidiaries,
                        is made known to us by others within those entities,
                        particularly during  the period in which this report
                        is being prepared;


                   (b)  [Omitted pursuant to SEC Release No. 33-8238];


                   (c)  Evaluated the  effectiveness  of the small  business
                        issuer's disclosure  controls   and  procedures  and
                        presented  in this report  our conclusions about the
                        effectiveness   of   the   disclosure  controls  and
                        procedures,  as of  the end of the period covered by
                        this report based on such evaluation; and

                   (d)  Disclosed  in this  report  any  change in the small
                        business  issuer's  internal control over  financial
                        reporting  that occurred  during the  small business
                        issuer's  most  recent  fiscal  quarter  (the  small
                        business  issuer's fourth fiscal quarter in the case
                        of an annual report)  that has materially  affected,
                        or is reasonably  likely to materially  affect,  the
                        small  business   issuer's  internal  control   over
                        financial reporting; and

     5.       The small  business  issuer's   other   certifying  officer(s)
              and I have disclosed, based on our most recent  evaluation  of
              internal  control  over  financial  reporting,  to  the  small
              business  issuer's auditors and  the  audit  committee  of the
              small  business   issuer's  board  of  directors  (or  persons
              performing the equivalent functions):


                   (a)  All significant deficiencies and material weaknesses
                        in the design  or  operation  of  internal   control
                        over   financial  reporting   which  are  reasonably
                        likely  to  adversely   affect  the  small  business
                        issuer's ability to record,  process,  summarize and
                        report financial information; and


                   (b)  Any fraud,  whether or not  material,  that involves
                        management or other employees who have a significant
                        role in the small business issuer's internal control
                        over financial reporting.

Date: October 10, 2006

/s/ JAMES A. HAYWARD
James A. Hayward
Principal Financial Officer