Abraham, R., Kuroli, G., 2003.
Role of mites and thrips in the agrobiocoenosis of the soybean. Communications in Agricultural and Applied Biological Sciences, 68 (4 Pt A): 223-230.
Abstract
Differences in the number, dominance of mites and thrips in different soyabean cultivars belonging to different maturity groups were investigated. Small plot experiments were conducted in Kisalfold Region of Hungary with the following soyabean cultivars: early ripening Bolyi 38, Evans and McCall, middle ripening Bolyi 45, and late ripening Eszter, Zsuzsanna and Borza. Mites and thrips were collected every week with Berlese-extractor. Tetranychus urticae was the dominant mite species on soyabean, and developed its peak numbers at the end of August. The number of mites was 20% higher on the late ripening cultivars than on the early ripening ones. Predatory mites (Typhlodromus pyri, Amblyseius andersoni) and thrips (Scolothrips longicornis, Aeolothrips intermedius) were not able to reduce the number of Tetranychus urticae due to their low density. Among the thrips, Thrips tabaci was dominant on soyabean leaves, but Frankliniella intonsa was dominant on soyabean flowers. The blooming of the soyabean primarily influenced the dynamics of phytophagous thrips. The peak number of pests was recorded a week later and more thrips were counted on the late cultivars. Early ripening soyabean cultivars are recommended to be grown in the Kisalfold region since they are less affected by mites and thrips.
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