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Implications of Asian Soybean Rust in Nutrient Management - Research Update

机译:亚洲大豆锈病在营养管理中的意义-研究进展

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Based on these preliminary results, here are some observations. 1. KCl application reduced: 1.1 frogeye leaf spot and Septoria brown spot in Iowa and Missouri, but not in Illinois; 1.2 Cercospora leaf blight in Iowa and Louisiana; 1.3 ASR in Louisiana (CaCl_2 effect was similar), but not in Florida. 5. Mn + B application reduced ASR in both Louisiana and Florida. 2. To date at responsive sites, Mn and B have been applied together. Which of these nutrients is responsible for the effect? 3. KCl application has suppressed disease. Is this a K effect or a Cl effect or both? 4. Do disease considerations alter BMPs for nutrients? For example, if the KCl effect is due to Cl or tied to recently applied K, potash applications may need to be made directly to soybean. 5. Are there interactions among nutritional status and predisposing stressors such as water stress, soil compactions, and others?
机译:根据这些初步结果,以下是一些观察结果。 1.减少的氯化钾施用量:1.1爱荷华州和密苏里州的蛙眼叶斑和棕褐色褐斑,但在伊利诺伊州则没有; 1.2爱荷华州和路易斯安那州的尾孢叶枯病; 1.3路易斯安那州的ASR(CaCl_2效应相似),但佛罗里达州则没有。 5.在路易斯安那州和佛罗里达州,Mn + B的施用降低了ASR。 2.迄今为止,在响应部位,已将Mn和B一起施用。这些营养中的哪一种是造成这种效果的原因? 3.施用氯化钾可抑制疾病。这是K效应还是Cl效应或两者兼而有之? 4.疾病因素是否会改变营养素的BMP?例如,如果氯化钾的影响是由于氯或与最近施用的钾有关,则可能需要直接对大豆施钾肥。 5.营养状况和诱因之间是否存在相互作用,例如水分胁迫,土壤压实等?

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