<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>e65887_ex31-2.txt
<DESCRIPTION>RULE 13A-14/15D-14(A) CERTIFICATIONS
<TEXT>

EXHIBIT 31.2

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

I, James A. Hayward, the Chief Financial Officer of Applied DNA Sciences, Inc.,
certify that:

       1.    I have  reviewed this Annual Report on Form 10-KSB 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 r eport 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: January 16, 2007

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


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</DOCUMENT>
