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In de tuinbouw is in de laatste decennia een toename zichtbaar van problemen met polyfage plaagvorende insekten die gekenmerkt worden door ongevoeligheid voor insecticiden en verspreiding van eveneens polyfage, zeer schadelijke virussen.
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(Taburan spatial beberapa artropod utama dan prosedur pensampelan bagi Aphis gossypii Glov., dalam sistem polikultur yang terdiri daripada tanaman cili, terung dan leucaena.]
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Journal of Insect Physiology 49 (2003) 659669 www.elsevier.com/locate/jinsphys Decision making by generalist and specialist aphids with the same genotype Colin R.
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An esculent vegetable of many varieties, derived from the wild Brassica oleracea of Europe. The common cabbage has a compact head of leaves. The cauliflower, Brussels sprouts, etc., are sometimes classed as cabbages.
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