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'Superette Y. R.' variety cabbage was field-seeded on Jul 24 at the Texas A &amp; M University Vegetable Res. Sta., Goree, TX. Plots consisted of 2 rows, 30 - ft long, on 40-in centers. Plots were arranged in a randomized complete block design with 3 replicates. A poor stand necessitated transplanting plants to a density of 1 plant/row ft from adjacent plots on Sep 11. Insect counts were made on 10 randomly selected plants/plot on 12 dates. Small and large larvae of each species and cabbage looper eggs were recorded. Insecticide treatments were made when larval infestations approached or exceeded the threshold of 0.30 larvae/plant. All sprays were applied with a tractor-mounted CO2 sprayer equipped with 2 cone nozzles/row (12X). This system delivered 36.4 gpa of finished formulation at 40 psi. Ten applications of Spreader-Sticker 268 (also called Repel and marketed by Leffingwell Chemical Co., Brea, CA) were applied to all plots to repel rabbits. The repel I ant was tank-mixed with insecticides when possible. Orthene plots (0.75 ai/acre) received applications on Sep 20, Oct 3, 30, and Nov 9. Ambush plots (0.05 lb ai/acre) received applications on Sep 20, Oct 3, and Nov 9. Ambush plots (0.1 lb ai/acre) received applications on Sep 20, Oct 16, and Nov 3 . Pirimor, at 0.125 lb a i/acre, was applied to all plots on Oct 16 to eliminate a possible aphid infestation. Two yield samples (0.001 acre each) were taken from each plot, one from each row, on Dec 19. An analysis of variance was conducted for overall mean insect counts and yield data. Analysis of variance was also conducted using a splitplot AOV to incorporate time of sampling. Duncan's multiple range test was used to determine differences in means at the 0.05 probability level.

Control of Lepidopterous Larvae on Cabbage Using Foliar Sprays, 1978