Abstract
Corn earworm moths, Heliothis zea (Boddie), collected in a black-light trap equipped with an oven for killing the moths, increased from 2 per night in June to 10 in July, 50 in August, and more than 100 in September. Spray applications tested during 1962 to 1967 showed that Furadan® (2, 3-dihydro-2, 2-dimethyl-7-benzofuranyl methylcarbamate), Gardona® (2-chloro-l-(2, 4, 5-trichlorophenyl) vinyl dimethyl phosphate), and Matacil® (4-(dimethyl-amino)- m -tolyl methylcarbamate), gave control equivalent to carbaryl. The Heliothis virus provided moderate control with some formulations, but observations indicate that infection with the virus occurs mainly when the larva eats the egg shell on hatching, so that more frequent applications would be needed to equal control with insecticides.
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