Effects of Clariva Complete Beans Seed Treatment on Heterodera glycines Reproduction and Soybean Yield in Iowa
Effects of Clariva Complete Beans Seed Treatment on Heterodera glycines Reproduction and Soybean Yield in Iowa
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DOI：
10.1094/php-08-17-0043-rs
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发表时间：
2018-01-01
影响因子：
2.3
通讯作者：
Tylka, Gregory L.
中科院分区：
文献类型：
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作者：
Bissonnette, Kaitlyn M.;Marett, Christopher C.;Tylka, Gregory L.
近年来，防治大豆胞囊线虫(Heterodera Glycines；SCN)的种子保护剂处理已成为补充抗病大豆品种的有效手段。通过27个小区试验和18个条带试验，比较了CLARIVA全豆(CCB)和CruiserMaxx Advanced plus Viviance(CMV)对中抗(2014)和抗病(2015-2016)大豆品种SCN繁殖和大豆产量的影响。收集了产量数据，并通过条带试验中每个小块或采样区采集的土壤样本的最终(收获时)SCN卵密度除以初始(种植时)种群密度，计算出SCN繁殖系数。与CMV处理相比，CCB在两个小区试验(2014年和2015年各一个)中显著降低了SCN的繁殖率，但在任何一年的条带试验中都没有。在18个条带试验中，有5个试验的大豆产量显著高于CMV，但在任何一个小区试验中都没有，即使SCN的繁殖量显著下降。由于未知原因，CCB在两个小区试验和一个条带试验地点显著降低了产量。总之，在爱荷华州进行这些试验的年份中，CCB种子处理对SCN繁殖和大豆产量的影响是不同的。
In recent years, nematode-protectant seed treatments have become available to supplement resistant soybean cultivars to manage soybean cyst nematode (Heterodera glycines; SCN). Twenty-seven small-plot and 18 strip-trial experiments were conducted comparing the effects of Clariva Complete Beans (CCB) and CruiserMaxx Advanced plus Vibrance (CMV) on SCN reproduction and soybean yield on a moderately resistant (2014) and resistant (2015 to 2016) soybean cultivar. Yield data were collected, and an SCN reproductive factor was calculated by dividing final (at harvest) SCN egg population densities by initial (at planting) population densities from soil samples collected in each small plot or sampled area in the strip trials. Relative to the CMV treatment, CCB significantly decreased SCN reproductive factor in two small-plot experiments (one each in 2014 and 2015) but not in any of the strip trials in any year. Soybean yields were significantly greater with CCB versus CMV in 5 of the 18 strip trials but not in any of the small-plot experiments, even when there were significant decreases in SCN reproduction. For unknown reasons, CCB significantly decreased yields in two small-plot experiments and at one strip-trial location. In summary, the effects of CCB seed treatment on SCN reproduction and soybean yields were variable in the years that these experiments were conducted in Iowa.