Abstract
In laboratory tests at Brownsville, Tex., Sevin (1-naphthyl-N-methyl carbamate) applied as a spray to potted cotton plants was effective against the boll weevil ( Anthonomus grandis Boh.), the pink boll worm ( Pectinophora gossypiella (Saund.)) the boll worm (Heliothis zea (Boddie)), the cabbage looper ( Trichoplusia ni (Hbn.)), and the cotton aphid ( Aphis gossypii Glov.). On field plots in the Lower Rio Grande Valley, dusts containing 1.5 to 2.5 pounds of Sevin per acre applied at 4- to 7-day intervals gave control of the pink boll worm and boll weevil comparable with that obtained with standard insecticides.
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