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线虫一直以来是导致美国大豆产量下降的主要虫害。现在,线虫已经成为巴西大豆种植者们的“头号公敌”。近日在马托格罗索州的一项调查对该州332个农场的土壤样本进行了检测,82%的样本中都检出了线虫,其中主要种类为造成根部损害的线虫(短尾根腐线虫Pratylenchus brachyurus)。在巴西,这种线虫是影响咖啡产量的主要种类,而在美国则出现在南部和弗罗里达州的柑橘园。这种蠕虫寄生在大豆的根部,消耗植株养分,并对根部释放毒
Nematodes have been the major pest of the decline in U.S. soybean production. Nematodes have now become “number one public enemy” of Brazilian soybean growers. In a recent survey in Mato Grosso, soil samples from 332 farms in the state were tested, and nematodes were detected in 82% of the samples, the main species being nematodes that cause root damage Pratylenchus brachyurus). In Brazil, the nematode is the dominant species affecting coffee production, while in the United States citrus groves are found in the south and Florida. The worm is parasitic on the roots of soybeans, consuming plant nutrients and releasing poison to the roots