Effects of Hand Defoliation on Yield and Seed Weight of Soybeans

Effects of Hand Defoliation on Yield and Seed Weight of Soybeans
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人工落叶对大豆产量和粒重的影响

DOI：
10.1093/jee/65.2.567
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发表时间：
1972
期刊：
影响因子：
--
通讯作者：
L. W. Morgan
L. W. Morgan
中科院分区：
--
文献类型：
--
作者：
J. Todd;L. W. Morgan

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采用条带脱叶法模拟了大豆不同生长阶段和不同百分比的食植物昆虫对大豆的脱叶行为。在不同的生长阶段，单次落叶分别为33%、67%和100%，其产量和种子重量均有显著差异。连续和渐进的落叶，在所有生长阶段的产量和种子重量都急剧下降。
Defoliation of soybeans by phytophagous insects was simulated with band defoliation at various percentages and stages of growth of soybean plants. Significant differences in yield and seed weight were obtained following single defoliations of 33, 67, and 100% at several stages of growth. Continuous and progressive defoliations at all percentages drastically reduced yields and seed weight at all stages of growth tested. Comparison of data obtained in 1969 and 1970 indicated that early season single defoliation (up to full bloom) of 1/3 or 2/3 was more detrimental to yield at higher yield levels than at lower yield levels.