Control of Colorado Potato Beetle with Pydrin in Conventional Till and No-Till Transplanted Tomatoes, 1986

Abstract

Abstract ‘Ohio 7870’ tomato transplants were planted both no-till and conventional till in 25 ft rows on 16 May with a 2-row Holland transplanter. The planter was equipped with a 2 inch wide flutted coulter in front of each planter shoe for no-till treatments. Plots consisted of 3 rows with the center row being the record row. The distance between rows was 64 inches and the distance between plants within the row was 12 inches. No-till transplanting was made in overwintered wheat. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. All spray treatments were mixed in 10 gal of water and applied with a custom built row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gal/acre at 90 psi. Treatments were applied 13 Jun and 8 and 22 Jul. In evaluating the treatments, direct counts of the number of Colorado potato beetle/10 plants, % defoliation and plant height were recorded.