3. Right material Integration of biological methods with chemical con-
 trols involves judicious use of toxicants, both types of materials and rates which
 will conserve the natural enemies. Omite, and in some cases Plictran, have been
 used successfully in such a program. Other toxicants, fungicides, should also
 be studied for their effect on predators.

 4. Right time The time to release predators for spider mite control
is initially when the plants are transplanted, or at the first evidence of invas-
ion of the fields. Because the biological method works best when a balance is
established, the earlier predators are released the sooner the balance is reached
and biological control effected.

 3. Knowledge of options available for control:
 The future without doubt holds options for the farmer with regard to choices
of control. With current restrictive legislation, curtailed use of toxicants and
licensing required for commercial applicators there will come the professional
consultant or pest management specialist who will provide a service in agricul-
tural pest control. The farmer thus must know what routes he should take rela-
tive to equipment, pesticide, and relative to a question of knowledge to achieve
the control he desires. Should the farmer become his own pest management specia-
list or contract for the service? The answer to this question will doubtless
be provided by the success of his control efforts and by underlying economic
consideration.