Spray Evaluations for Bean Insects, 1992

Abstract

Treatments consisted of double rows (25 ft) planted 26 Tun; 3 ft apart and placed in a randomized complete block design with 4 replications. There was a 15 ft alleyway between each replication with 2 unsprayed buffer rows between treatments. A tractor-powered, 2-row planter was used for seeding. The plot was located at the Fruit and Vegetable Research Farm near Geneva, New York. Sprays were applied 4 (blossom stage), 11, and 25 Aug. The tractor-mounted sprayer was equipped with a 2-row boom with 3 nozzles/row and delivered 50 gal/acre at 50 psi. Plot evaluations on 1 Sep were conducted by harvesting all pods from consecutive plants for a 1 lb sample from each treatment in each replication. TPB damage was calculated from the no. of pods injured/1 lb sample and then recorded on a percentage basis. MBB counts were made from 25 consecutive plants from each treatment in each replication with no. of larvae recorded.