Arthropod Control on Eggplant, 1980

Abstract

Abstract Transplants were set Mar 21, 1980, 18 in apart on 2.5 ft wide by 8 in high beds of Myakka fine sand covered with black polyethylene mulch. Plots consisted of 10 plants and were replicated 4 times in a randomized blocks design. Treatments were applied to runoff using a 2.5 gal hand held stainless steel sprayer with a single adjustable cone nozzle. On May 8 the number of Glover’s mites and green peach aphids on the undersides of the third leaf from the top of the largest lateral of 5 plants per plot were counted. On Jun 12, the number of twospotted spider mites and green peach aphids were counted on the undersides of the third leaf from the top of the youngest lateral of 5 plants/plot. Counts were completed by brushing the leaves in a leaf brushing machine and counting the number of individuals trapped on 1/10 of the detergent-coated glass plate. Counts were adjusted to a per leaf basis. The number of holes and windows in these same leaves produced by cabbage looper larvae were also counted. On the same date, the total number of leafmines of the vegetable leafminer were counted on the second leaf from the bottom of 5 plants. Plots were harvested Jun 6, 13, 20, 22, 24 and 26 and the number and weight of undamaged fruit and fruit damaged by cabbage looper larvae determined.