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首页> 外文期刊>Nematropica >WEED HOSTS FOR ROTYLENCHULUS RENIFORMIS IN COTTON FIELDS ROTATED WITH CORN IN THE SOUTHEAST OF THE UNITED STATES
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WEED HOSTS FOR ROTYLENCHULUS RENIFORMIS IN COTTON FIELDS ROTATED WITH CORN IN THE SOUTHEAST OF THE UNITED STATES

机译：美国东南部用玉米旋转的棉花田中轮虫的杂草寄主

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Lawrence, K. S., A. J. Price, G. W. Lawrence, J. R. Jones, and J. R. Akridge. 2008. Weed hosts for Rotylenchulus reniformis in cotton fields rotated with corn in the southeast United States. Nematropica 38:13-22. The reniform nematode (Rotylenchulus reniformis) is the primary economical nematode pest of cotton (Gossypium hirsutum) in the southern states of Alabama, Louisiana, and Mississippi. Corn (Zea mays), a non-host to R. reniformis, is the principal crop rotated with cotton to reduce R. reniformis populations. In recent years, failure to manage the nematode populations have been attributed to non-controlled common weed species growing in fields farmed under the cotton-corn rotation system. The important role played by 43 weed species in sustaining reniform nematode populations in these fields was confirmed in greenhouse, microplot and field experiments. In the greenhouse, the majority of dicotyledonous weed species tested served as hosts for R. reniformis, while the monocots did not. In field microplot studies, individual weed species (Ipomoea hederacea, I. lacunosa, I. purpurea, and Senna obtusifolia) growing in association with corn increased R. reniformis nematode populations. In field trials where corn plots were treated with only a preemergence herbicide, non-controlled weed species sustained R. reniformis populations as compared to the weed-free treatments. Season long weed management during the corn rotation system is an essential agronomic practice to obtain the full benefit of the rotation, and to effectively suppress R. reniformis populations.
机译：劳伦斯，K。S.，A。J. Price，G。W.劳伦斯，J。R. Jones和J. R. Akridge。 2008年。在美国东南部，玉米轮作的棉花田中，轮虫轮虫寄主。 Nematropica 38：13-22。肾形线虫（Rotylenchulus reniformis）是南部阿拉巴马州，路易斯安那州和密西西比州的主要经济棉线虫病（棉（Gossypium hirsutum））。玉米（Zea mays）是非R. reniformis的寄主，是与棉花轮作以减少R. reniformis种群的主要农作物。近年来，未能控制线虫种群的原因是由于在棉玉米轮作系统下种植的田地中生长着不受控制的普通杂草物种。在温室，微区耕作和田间试验中证实了43种杂草物种在维持这些田间的肾形线虫种群中的重要作用。在温室中，所测试的大多数双子叶杂草都充当了R. reniformis的寄主，而单子叶植物却没有。在田间微区图研究中，与玉米结合生长的单个杂草物种（异叶番薯（Ipomoea hederacea），I。lacunosa，I。purpurea和I. obtusifolia）增加了肾形目线虫线虫种群。在仅使用出苗前除草剂处理玉米田的田间试验中，与无杂草处理相比，不受控制的杂草物种可维持雷蒙德罗非鱼种群。在玉米轮作系统中进行长季杂草处理是一项重要的农艺实践，可充分利用轮作的益处并有效抑制雷蒙德罗非鱼种群。

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