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Effect of different insecticides on parasitism by Trichogramma pretiosum Riley and Trichogramma atopovirilia Oatman y Platner on Helicoverpa zea (Boddie) eggs



Effect of different insecticides on parasitism by Trichogramma pretiosum Riley and Trichogramma atopovirilia Oatman y Platner on Helicoverpa zea (Boddie) eggs



Agronomia Tropical Maracay 50(3): 337-346



The effect of endosulfan (0.6 kg i. a.), pirimicarb (0.1 kg i. a.), monocrotophos (0.6 kg i. a.), cypermethrin (0.1 kg i. a.) and thiodicarb (0.375 kg i. a.) on the parasitism and adult emergence of T. pretiosum and T. atopovirilia were studied. Eggs of H. zea were used as hosts. Evaluations were taken in the laboratory and field cages at 27+or-3 degrees C and 70+or-18% RH.

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