Abstract
Abstract Thirteen treatments were evaluated for thrips control in cotton planted 5 May in sandy loam soil on the Delta Branch Experiment Station, Stoneville, MS. The field was irrigated prior to planting and moisture conditions were good. Granular materials were pre-weighed and applied by use of a conveyer belt type granule applicator attached to the planter. Foliar applications of Orthene 75 S, Swat 8 E and Cygon 400 were made with a high clearance spray tractor equipped with a compressed air spray system calibrated for a 19 inch band at 5 gal/acre with one TX 6 nozzle/row. Orthene 75 S solution was applied at planting by a CO2 powered sprayer with a hollow cone nozzle adjusted to spray in furrow during planting at a rate of 5 gal/acre. Thrips were sampled by collecting 10 plants/plot and placing them into qt canning jars. In the laboratory the plants were washed with a few drops of detergent/pt of water, and thrips were rinsed onto a 115 mesh sieve and hence to filter paper for counting via a dissection microscope.
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