Three methods of determining levels of resistance in H.armigera were evaluated. These included: (i) a standard glass vial test (ii) a tropical application (iii) a leaf disc test

To optimize catches of Heliothis punctigera and H. armigera pheromone blends, dispenser and trap design have been evaluated and modified over a.7 year period.

A contribution was made to the last ACGRA conference on "The duration.of insecticidal activity against Heliothis larvae on cotton".