Field evaluation of sunflower as a potential trap crop of Lygus pratensisin cotton fields
文献类型： 外文期刊
作者： Zhang, Renfu 1 ; Wang, Wei 2 ; Liu, Haiyang 2 ; Wang, Dengyuan 1 ; Yao, Ju 2 ;
作者机构： 1.Xinjiang Agr Univ, Coll Agron, Key Lab Pest Monitoring & Safety Control Crops &, Urumqi, Xinjiang, Peoples R China
2.Xinjiang Acad Agr Sci, Inst Plant Protect, Key Lab Intergraded Management Harmful Crop Vermi, Minist Agr, Urumqi, Xinjiang, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2020 年 15 卷 8 期
页码：
收录情况： SCI
摘要： The mirid bugLygus pratensisis an important pest of cotton, and is primarily managed through insecticide application. In this study, conducted in Xinjiang (China), we assessed the relative attractiveness of sunflower (Helianthus annuus) toL.pratensisadults in local cotton plots from 2015-2016 and quantified the associated contribution of inter-planted sunflower strips to suppress field-levelL.pratensispopulations from 2016-2017. Field-plot trials showed that among six combinations of two sunflower varieties (XKZ6 and SH363) and three planting dates (early-, middle- and late-planted), adult abundance ofL.pratensiswas highest on early-planted XKZ6 and attained 3.7-5.8 times higher levels than in neighboring cotton plots. In commercial cotton fields, the combined deployment of sunflower strips at field edges and the periodic application of insecticides directed to those strips was found to (1) reduce the mean abundance ofL.pratensispopulation on cotton by 41.9-44.0%, (2) lower the rate of cotton leaf damage by 27.3-30.6% and boll damage by 44.8-46.0%, and (3) increase the number of mature bolls by 7.5%-8.0%. Our work emphasizes how sunflower can be an effective trap crop forL.pratensisand that the establishment of sunflower strips could contribute to its effective and environmentally-sound management in cotton crops.
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