Selected Treatments for Control of Southern Corn Rootworm Injury in Peanut, 1993

Abstract

Abstract Liquid and granular insecticide formulations were evaluated for control of SCR pod injury in cv. ‘NC 7’ Virginia-type peanut in Suffolk, VA. Peanuts were planted on 17 May using a 36-inch row spacing. All treatments were applied in a 14-inch band over the row either at preplant (band, ppi), early flowering (24 Jun) or at pegging (13 Jul). Liquid treatments were applied with a CO2-pressurized backpack sprayer calibrated to deliver 17 gpa at 22 psi through one 8004E flat fan nozzle per row. Granules were applied with a bicycle-mounted Noble applicator. Preplant treatments were soil incorporated 3 to 4 inches deep using a land conditioner. Early flowering time banded treatments were lightly soil incorporated with cultivator sweeps in row middles. A RCBD was used with 4 replicates; plots were 4 rows × 40 ft. Pod injury was determined 15 Sep from 100 randomly selected pods per plot, taken from 5 plants per plot (20 pods/plant). Pods were categorized as undamaged, scarred (apparently superficial damage to the outer pod wall), and penetrated (pod wall penetrated). Yield was based on digging, combining (6 Oct), drying and weighing peanuts from the 2 center rows (80 row ft) of each plot. Data were analyzed using ANOVA and LSD statistical procedures.