Abstract
Pre-planting treatment consisting of dipping the roots and crown of peach trees in a suspension of endosulfau (10 lbs. 50% w.p. per 100 gals.) provided a high degree of control of the peach tree borer, Sanninoidea exitiosa (Say), during the second growing season. DDT, dieldrin, and endosulfan were evaluated in pre-planting treatments in 1962 at concentrations of 5, 10, 20, and 40 lbs. of 50% w.p. per 100 gals. Dieldrin and endosulfan were effective at the 5-lb. concentration, while DDT was effective at higher concentrations. None of the treatments proved phytotoxic. Emulsifiable concentrates of endosulfan proved more satisfactory for dip treatments than wettable powder which required constant agitation. Aerosol application of endosulfan proved nonphytotoxic and effective. The addition of Indopol polybutene and a plasticized acrylic polymer did not increase the residual effectiveness of endosulfan during the first growing season.
Published Version
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