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Glyphosate Interactions with Manganese

机译：草甘膦与锰的相互作用

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Field experiments were conducted on the Eastern Shore of Virginia from 1999 to 2001 to evaluate the effects of tank mixture applications of isopropylamine or trimethylsulfonium salts of glyphosate with two liquid formulations of manganese (Mn lignin or Mn chelate) on spray solution pH and weed control in glyphosate-resistant soybean. Additions of manganese to herbicide solutions resulted in a reduction in the acidifying effects of the herbicides as well as in the control of common lambsquarters, large crabgrass, morningglory spp., and smooth pigweed. Reduced control caused by manganese could be overcome with higher rates of the herbicides on some species, but reduced control of common lambsquarters was seen when manganese was included with any herbicide application rate. For most species, Mn chelate caused a greater reduction in control than did Mn lignin. Although manganese caused significant decreases in weed control, soybean yield was not influenced by glyphosate salt, application rate, or manganese. Reduced weed control caused by the addition of manganese to herbicide solutions may be due to the complexing of the herbicide formulations, which could result in the formation of insoluble salt complexes that are not readily absorbed through the plant cuticle, resulting in decreased glyphosate phytotoxicity.
机译：1999年至2001年在弗吉尼亚东海岸进行了野外试验，以评估草甘膦的异丙胺或三甲基ulf盐与两种锰（锰木质素或锰螯合物）液体制剂的罐混应用对喷雾溶液pH值和杂草控制的影响。抗草甘膦大豆。在除草剂溶液中添加锰会导致除草剂的酸化作用降低，并导致普通小羊，大马草，牵牛花属和光滑的杂草的控制受到影响。在某些物种上，较高的除草剂施用量可以克服锰引起的防控减少，但是在任何除草剂施用量中都包含锰的情况下，对普通羊羔的防治作用就会降低。对于大多数物种而言，锰螯合物比锰木质素引起更大的控制降低。尽管锰导致杂草控制显着下降，但大豆产量不受草甘膦盐，施肥量或锰的影响。除草剂溶液中添加锰导致的杂草控制降低可能是由于除草剂配方的复杂化，这可能导致形成不溶性盐复合物，该复合物不易被植物表皮吸收，从而降低了草甘膦的植物毒性。

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