Tests of New Materials to Control Peach Twig Borer on Almonds and Peaches

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Abstract
Against Anarsia lineatella, triethanolamine dinitro-o-sec. butyl phenate, DDT and parathion appear to have good possibilities for use as alternatives to basic lead arsenate. The dinitro-compound applied to semi-dormant almonds kills a high percentage of wintering larvae within their hibernacula and also controls the clover mite, Bryobia praetiosa. Tests indicate that DDT and parathion are superior to lead arsenate for worm control on both almonds and peaches. DDT and parathion are effective in sprays applied at various intervals before and after bloom. Useful combinations of DDT or parathion with various copper fungicides, dormant oil and several new acaracides are discussed briefly in connection with pre-bloom sprays.

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