Abstract
Abstract An experimental celery planting (Tall Utah 5270-R) was transplanted on Aug 1. Insecticide treatments were replicated 4 times in a random block design. The replicates were 2 rows wide (40 in centers) by 25 ft long with a 5 ft buffer between replicates ten plants/replicate were inspected weekly from Aug 21 through Nov 2. Insecticides were applied when 5 or more larvae/40 plants were found. Insecticides were applied with a back-pack sprayer with 3 nozzles/row at an operating pressure of 30 psi and delivery rate of 100 gal/acre. The nozzles were hollow cone, D3 orifice, 23 cores and 50-mesh screen. All treatments included 0.04% spreader/sticker (Biofilm). The treatments were harvested on Nov 7 and all plants were inspected for lepidopterous larvae damage. The data were analyzed by Duncan’s multiple range test at the 5% level of probability. Arcsin transformation was used for celery damage.
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