TOP AIR MANUFACTURING, INC. AND SUBSIDIARY


                                 EXHIBIT 10 (b)


                        AMENDMENT TO EMPLOYMENT AGREEMENT



                     FIRST AMENDMENT TO EMPLOYMENT AGREEMENT



         THIS FIRST  AMENDMENT TO EMPLOYMENT  AGREEMENT  ("First  Amendment") is
entered  into as of the  19th  day of  October,  1994,  by and  between  TOP AIR
MANUFACTURING,  INC., an Iowa  corporation  ("Employer"),  and STEVEN R. LIND, a
resident of the State of Iowa ("Employee").


                                    RECITALS:

         A. Employer and Employee are parties to a certain Employment Agreement,
dated as of November 6, 1992 (the "Employment Agreement").

         B. The Employment  Agreement provides for the employment of Employee to
assume  the  responsibilities  of  President  and  Chief  Operating  Officer  of
Employer,  or such  other  senior  management  responsibilities  as the Board of
Directors  of  Employer  (the  "Board")  may  prescribe,  all on the  terms  and
conditions set forth in the Employment Agreement.

         C. The  parties  desire to amend the  Employment  Agreement  in certain
respects and to acknowledge  certain actions previously taken by them related to
Employee's employment.

         NOW  THEREFORE,  in  consideration  of  the  premises,  the  agreements
hereinafter set forth,  and other good and valuable  consideration,  the receipt
and sufficiency of which is hereby acknowledged,  Employer and Employer agree as
follows:

         1. The  Employment  Agreement is hereby  amended by deleting  paragraph
4(a) thereof in its entirety and substituting the following in lieu thereof:

                  (a)      "He shall  receive an initial  fixed annual salary of
                           $52,500.00,  payable semi-monthly.  The Board may, by
                           appropriate Board action, increase, but not decrease,
                           Employee's  fixed annual salary under this  Agreement
                           at any time during the term of this Agreement."

         2. The Employment  Agreement is hereby further  amended by deleting the
second sentence of paragraph 10(b) thereof in its entirety and  substituting the
following in lieu thereof:

                           "In  the  event  of a  termination  pursuant  to this
                           paragraph  10(b),  Employee's  compensation  shall be
                           paid on a prorated  basis through the effective  date
                           of  termination,  subject to any  rights of offset of

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                           Employer;  and in addition,  Employee shall be paid a
                           termination  fee  equal  to  50% of  Employee's  then
                           current  fixed  annual  salary under  paragraph  4(a)
                           hereof."

         3.  Employer  and  Employee  acknowledge  and agree  that the Board has
increased  Employee's fixed annual salary under the Employment  Agreement on two
previous  occasions,  that  Employee's  fixed annual salary under the Employment
Agreement is currently  $59,000.00,  and that  Employer and Employee have at all
times  intended  that such  increases  would not limit,  terminate or modify any
provision of the Employment  Agreement other than modify the fixed annual salary
of Employee  under  paragraph  4(a) of the  Employment  Agreement and modify the
amount of the  termination  payment under the second sentence of paragraph 10(b)
of the Employment Agreement.

         4. As amended by this First  Amendment,  the  Employment  Agreement  is
hereby ratified and affirmed and is in full force and effect,

         IN WITNESS  WHEREOF,  the parties have executed this First Amendment as
of the day and year first above written.


                                              TOP AIR MANUFACTURING, INC.



                                              By: /s/ S. Lee Kling
                                                  S. Lee Kling, Chairman
                                                  of the Board

                                              "Employer"



                                               /s/ Steven R. Lind
                                               Steven R. Lind

                                               "Employee"



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