Colorado Potato Beetle Control with Biological and Synthetic Insecticides, Pasquotank County, 1989
Abstract
Abstract Su perior' potatoes were planted near Weeksville, N.C. Single row plots, 6 . 1 B long with rows 1.06 m apart were replicated 4 times in a randomized complete block design. Treatments were applied using a COa pressurized sprayer with a single hollow cone nozzle (18 X) operating at 60 psi to apply 119.2 liter/ha. Treatments were applied 16 May (all) and 24 May (M-One, Trident and Trident II). Visual estimates of foliar damage and/or insect counts were made 23 May and 1 Jun. Larvae were counted on 3 hills/plot. Small larvae were assumed to be 1st and 2nd instars, and large 3rd and 4th.
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