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Comparison of phosetyl-Al, phosphorous acid and metalaxyl for the long-term control of Phytophthora root rot of avocado

机译:磷酰铝,亚磷酸和甲霜灵对鳄梨疫霉根腐病的长期防治效果比较

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Avocado trees affected by root rot caused by Phytophthora cinnamomi Rands recovered rapidly when given injections into the trunk of phosetyl-A1 or phosphorous acid. Injected trees had greater yields(47.9-67.5 v. 4.3 kg fruit per tree) and lower leaf chloride levels (0.8-2.4 v. 4.2%, w/w) than controls in the third season after starting treatment. Phosphorous acid residues (21-83 mg kg-1) were detected in fruit from injected trees. Metalaxyl applied to the soil twice each growing season successfully controlled root rot for the first 2 seasons, but there was a significant resurgence of decline symptoms after the third consecutive season of use.
机译:当对磷虾基-A1或亚磷酸注入树干时,受疫霉兰引起的根腐病影响的鳄梨树迅速恢复。在开始处理后的第三季,与对照相比,注入的树木具有更高的产量(每棵树木47.9-67.5 v。4.3公斤水果)和较低的叶片氯化物含量(0.8-2.4 v。4.2%,w / w)。在注入的树木的果实中检测到亚磷酸残留物(21-83 mg kg-1)。在每个生长季节两次将甲霜灵施用到土壤中,在前两个季节中成功控制了根腐病,但是连续第三个季节使用后,腐烂症状明显恢复。

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    《Animal Production Science》 |1987年第3期|p.471-474|共4页
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