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Student 10-Minute Paper

Plant-Insect Ecosystems

Student Competition

Student

Grad Competition P-IE: Insecticide Resistance

(2nd Place) Why can't I find a mate? On-farm management of diamondback moth in Virginia

Monday, November 6, 2023
12:06 PM – 12:18 PM ET
Location: Gaylord National Resort & Convention Center, Chesapeake 3
In-Person Student Competition
The diamondback moth (Plutella xylostella: L) (Lepidoptera: Plutellidae) is a cosmopolitan pest of cruciferous vegetable crops. It is particularly challenging to manage due to its ability to quickly develop resistance to insecticides. An alternative integrated pest management technique, mating disruption, is being explored. Mating disruption is a competitive attraction technique that dispenses the target synthetic female sex pheromone over a large area in order to deter the males from finding females. Experimental plots were set up in Mechanicsville, Virginia. Six commercial brassica fields, ranging from 10-30 acres, were selected and divided into treatment vs. control plots. MESO dispensers attached to wooden stakes were placed in treatment plots at four per acre. Three pheromone-baited DeltaⓇ traps were placed in each field (treatment and control) to determine adult moth activity. Traps were checked and replaced weekly. Visual in-field scouting for diamondback moth larvae took place weekly. Results are yet to be determined and will be discussed during the presentation at the ESA National Branch meeting.