Yield of Subsequent Crop When Tree Shaking is Used to Remove Mummy Almonds for Navel Orangeworm (Lepidoptera: Pyralidae) Control

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Nuts that remain on the tree from the previous crop, "mummies," which harbor the navel orangeworm, Amyelois transitella (Walker), can be effectively and economically removed from dormant almond trees with a trunk shaker on foggy, winter days. Some fruit bud removal also occurs during this operation. However, in this experiment, there was no measurable loss of subsequent yield when trees were shaken during the period from mid-December to late-January. At harvest the mean weight of kernels per shaken tree was 18.4 kg for the 'Nonpareil' cultivar and 17.5 kg for the 'Merced' cultivar. Mean weight of kernels from unshaken trees was 18.1 kg and 17.0 kg, respectively.

Document Type: Research Article

Publication date: June 1, 1983

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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