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  • Title: Role of mites and thrips in the agrobiocoenosis of the soybean.
    Author: Abrahám R, Kuroli G.
    Journal: Commun Agric Appl Biol Sci; 2003; 68(4 Pt A):223-30. PubMed ID: 15149112.
    Abstract:
    Soy beans dangerous pests are mites and thrips, that is why the present paper aims at the examination of the changes in their numbers and dominance relations of some varieties of different maturity groups. The small plot experiments were conducted in Kisalföld region with the following soybean varieties: early ripening Bólyi 38, Evans, McCall, middle ripening Bólyi 45 and late ripening Eszter, Zsuzsanna and Borza, in Mosonmagyaróvár. Mites and thrips were collected every week with Berlese-extractor. It was observed that Tetranychus urticae Koch, the dominant mite species on soybean, developed its peak-numbers at the end of August. The number of mites was 20 % higher on the late ripening varieties, than on the early ripening ones. Predatory mites (Typhlodromus pyri Scheuten, Amblyseius andersoni Chant) and thrips (Scolothrips longicornis Priesner, Aeolothrips intermedius Bagnall) could not reduce the number of Tetranychus urticae due to their low density. Among the thrips Thrips tabaci Lindeman was the main pest of the soybean leaves, but Frankliniella intonsa Trybom was dominant in the flowers. The blooming of the soybean primarily influences the dynamics of phytophagous thrips. The peak-number of pests reached the highest rate a week later and more thrips were counted on the late varieties as well. Early ripening soybean varieties are recommended to be grown in the Kisalföld region since they are less affected by mites and thrips.
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