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ViewAttendees 4

10-Minute Paper

Plant-Insect Ecosystems

P-IE: Biological Control 2

Is the diet quality a factor affecting the mortality of parasitized corn earworm on hemp?

Wednesday, November 8, 2023
8:36 AM – 8:48 AM ET
Location: Gaylord National Resort & Convention Center, Maryland D
In-Person
The corn earworm (CEW) Helicoverpa zea is among the major pests in hemp nationwide. The damage of this pest can be severe on hemp varieties grown outdoors for CBD, fiber grain production. However, the chemical control of CEW on hemp is restricted to organic insecticides whose effect is still not very clear. Therefore, understanding the relationship between CEW and their parasitoids becomes important for the IPM agenda. Here we quantify the interactions of tachinid parasitoids attacking H. zea larvae in hemp systems of western Kentucky. We hypothesized that the food supplied to the CEW larvae (hemp VS laboratory diet) affects the performance of tachinid flies in terms of survival and the number of individuals per host larva. Moreover, other factors such as the number of fly eggs and the caterpillar size are considered.