Abstract
Abstract A field near Greenville, in Pitt County, was selected to evaluate 2 miticides for control and 3 insecticides for their potential to induce spider mite outbreaks. The field was selected because its wide-spread and uniform infestation made it an excellent site to evaluate these products. Peanuts had been planted on 36 inch centers and were showing signs of severe spider mite damage. Treatments were applied on 15 Aug using a CO2-pressurized backpack sprayer delivering 30 gal/acre at 40 psi using 8002 flat-fan nozzles. Conditions at the time of application were overcast and 85°F with no wind. The Danitol plots were treated a second time on 22 Aug under sunny skies and 88°F. Plots were 20 ft long × 40 rows wide with a 5 ft border between plots on each end. Four replicates for each treatment were arranged in a randomized complete block design. Sampling was conducted on 17 Aug (48 h posttreat), 22 Aug (7 d posttreat) and 29 Aug (14 d posttreat) by collecting 25 leaflets at random from each plot. These leaflets were placed in a plastic bag and chilled until they could be processed in the laboratory. Samples were processed using a commerciallyavailable mite brushing machine. All data were transformed A + 075 prior to analysis. Actual means are presented.
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