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Assocation of Phytophthora Sojae wtih Heterodera Glycines and Nutrient Stressed Soybeans

机译：大豆疫霉菌与杂藻甘氨酸和营养胁迫大豆的关联

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Kaitany, R., H. Melakeberhan, G. W. Bird, and G. Safir. 2000. Association of Phytophthora sojae with Heterodera glycines and nutrient stressed soybeans. Nemtropica 30:193-199. Soybean cyst nematode (SCN, Heterodera glycines ), a serious pest of soybeans, has been found in 30 counties in Michigan. Phytophthora sojae , a serious and opportunistic pathogen of soybeans, has also been found in many of the fields. This study was conducted to assess the incidence of P. sojae in 12 selected soybean cultivars grown under low (fumigated) and high (non-fumigated) SCN conditions and nutrient stress. A total of 70 soil and root and stem samples (same plant) from each nematicide treatment were analyzed for SCN population densities and P. sojae. Incidence of P. sojae was highly correlated with SCN population densities in untreated plots; whereas, both organisms were low in the treated plots and poorly correlated. Leaf N and K were significantly higher in nematicide-treated plots while the reverse w
机译：Kaitany，R.，H. Melakeberhan，G. W. Bird和G. Safir。 2000年。大豆疫霉菌与杂藻甘氨酸和营养紧张的大豆协会。 Nemtropica 30：193-199。在密歇根州的30个县发现了大豆囊肿线虫（SCN，杂种甘氨酸），这是一种严重的大豆害虫。大豆疫霉菌是大豆的一种严重的机会病原体，也已在许多领域中发现。进行这项研究以评估在低（熏蒸）和高（非熏蒸）SCN条件和养分胁迫条件下生长的12个选定大豆品种中大豆疫霉的发生率。每种杀线虫剂处理共收集了70个土壤以及根和茎样品（同一株植物）的SCN种群密度和大豆疫霉菌。在未经处理的地块中，大豆疫霉菌的发病率与SCN种群密度高度相关。然而，两种生物在处理地块中均较低，且相关性差。在使用杀线虫剂处理的地块中，叶的N和K显着较高，而相反的w

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