<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>e65887_ex31-1.txt
<DESCRIPTION>RULE 13A-14/15D-14(A) CERTIFICATIONS
<TEXT>

EXHIBIT 31.1

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

I, James A. Hayward, the Chief Executive 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 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: January 16, 2007

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


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</DOCUMENT>
