Asparagus Beetle Control on Asparagus, 1983

Asparagus was planted in the spring of 1982 near Benson, NC. Single row plots 10 ft long with 60-inch centers were arranged in a randomized complete block design replicated 4 times. Difolatan was applied 20 Jun and 14 Jul. Applications were made with a CO2 pressurized backpack sprayer with a single hollow-cone nozzle delivering 50 gal/acre at 60 psi. Applications of Di-Syston 8EC and Sevin 80SP were made on 13 Jun, and additional treatments of Sevin 80SP at 2 different rates were made on 20 and 27 Jun. Counts of eggs, larvae and adults were made on 12, 22, 29 Jun and 8 Jul.