Phytosanitary importance of Heterodera glycines for South-east Asian countries |
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| Authors: | Rajan and Arjun Lal |
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| Institution: | Plant Quarantine Division, National Bureau of Plant Genetic Resources, New Delhi 110 012 (India) |
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| Abstract: | Heterodera glycines is not known to occur in South-east Asian countries except in Indonesia. Specific surveys carried out recently in central India indicate absence of the nematode. The region has a large area under cultivation of soybean, and also other crop and wild hosts. H. glycines causes annual yield losses of about half a million metric tons in 10 major soybean-growing countries. Asia has to import half its demand of soybeans, mainly from North America and Brazil, where H. glycines occurs. Spread is mainly through soil mixed with seeds, or by spillage of grain. A preliminary pest risk analysis suggests that the South-east Asian region is suitable for the introduction and spread of H. glycines . Management practices are suggested to delay its introduction. |
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