Response of the succeeding crops as affected by the residue of herbicides applied in wheat in Old Brahmaputra Floodplain, Bangladesh

Taslima Zahan , Md Abdul Muktadir , Md Moshiur Rahman , Md Mohsin Ahmed
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引用次数: 3

Abstract

Residual effect of eight herbicides (pendimethalin, pretilachlor, triasulfuron, ethoxysulfuron, pyrazosulfuron-ethyl, carfentrazone-ethyl, 2,4-D amine and carfentrazone-ethyl + isoproturon) applied in strip –tilled wheat (Triticum aestivum L.) on the succeeding crop i. e mungbean (Vigna radiate L.), jute (Corchorus capsularis L.) and sunflower (Helianthus annus L.) were investigated during 2013-14 and 2014-15 cropping season in Old Brahmaputra Flood plain, Bangladesh through bio assay techniques. Results of two years study revealed that germination and crop growth of these succeeding crops were not affected by any of the herbicides residue applied in wheat. Leaf chlorophyll and crop dry matters of the succeeding crops were also not influenced from herbicide residue. Somewhat, shoot lengths of mungbean and sunflower were increased in the herbicide treated plots but root lengths of some herbicide treated plots were decreased at a negligible rate compare to the control one. Therefore, residual effect study claimed that use of the tested herbicides in strip-tilled wheat is safe for germination and growth of the succeeding crops like mungbean, jute and sunflower and farmer can grow these crops in a rotation with strip-tilled wheat.

孟加拉国旧雅鲁藏布江漫滩小麦除草剂残留对后续作物的影响
研究了2013-14和2014-15两季,布拉马普特拉平原小麦(Triticum aestivum L.)条播小麦(Triticum aestivum L.)上施用的8种除草剂(戊二甲基灵、苯甲草胺、三硫脲、乙氧基磺隆、吡唑磺隆-乙基、卡芬曲酮-乙基、2,4- d胺和卡芬曲酮-乙基+异proturon)对后续作物绿豆(Vigna辐射)、黄麻(Corchorus capsularis L.)和向日葵(Helianthus annus L.)的残留效应。孟加拉国通过生物分析技术。两年的研究结果表明,这些后续作物的发芽和作物生长不受任何除草剂残留小麦的影响。后续作物的叶片叶绿素和作物干物质也不受除草剂残留的影响。除草剂处理小区绿豆和向日葵的茎长有所增加,但部分除草剂处理小区的根长与对照相比减少的幅度可以忽略不计。因此,残留效应研究表明,在条作小麦中使用所试除草剂对后续作物如绿豆、黄麻和向日葵的发芽和生长是安全的,农民可以将这些作物与条作小麦轮作。
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