Studies on the Biology and Control of Eurytoma amygdali in Greece

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Eurytoma amygdali Enderlein, the almond fruit wasp, is a serious pest of almonds in northern Greece. Soft-shell almond varieties are the most susceptible. This insect is univoltine and overwinters as a fully developed larva in diapause within blackened mummified fruit which adhere tightly to the trees. Adult emergence begins in April, and mating and oviposition quickly follow. The egg is inserted within the endosperm of the fruit and has a long pedicel which leads outward to the seed coat. In cubation lasts about 19–21 days, and hatch begins about the time that the almond seed embryo becomes visible, Larval development is completed by the end of June or the beginning of July, then the larvae enter diapause and remain in this state for 1–3 winters. Phosphamidon, applied during the peak hatching period, provided a significant degree of larval control.

Document Type: Research Article

Publication date: December 15, 1970

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