Recent Experiments On Oriental Peach Moth Control In New Jersey1

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Abstract
Nicotine sulfate and white oil emulsions failed to control the Oriental Peach Moth, Laspeyresia molesta, when these sprays were used against the first brood eggs and larvae. Two years spraying tests with pyrethrum impregnated white oil emulsions used at one per cent or less failed to control the Oriental Peach Moth when these sprays were applied to coincide with the appearance of third brood eggs and larvae. Talc dust applied at the time the third brood eggs were hatching gave a partial control of the peach moth in two orchards. In a third orchard the talc dust was found to prevent the work of the egg parasite, Trichogramma minutum and no control was obtained. Experiments in 1928 and 1929 showed that larval parasitism by Macrocentrus ancylivora could be increased in young orchards in North Jersey by the liberation of this parasite during June, July and August.

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