National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present paper is review of various research findings on weeds and weed control in soybean. Soybean is the most important oil seed and grain legume crop in the world, in terms of total production and international trade. However, losses due to weeds have been one of the major limiting factors in soybean production. So, successful weed control is one of the most important practices for economical soybean production. Weeds that germinate at the same time as soybean, grow faster and maintain a canopy above and below the top of the soybean canopy and result in reduced quality. Common weeds in soybean are common cocklebur (Xanthium pensylvanicum), giant foxtail (Setaria faberii), sword grass (Imperata cylindrica), Johnson's grass (Sorghum halepense) and Couch grass (Cynodon dactylon). Different chemicals are used but a mixture of imazethapyr and quizalofop seems to perform best and when these chemicals are supplemented with mechanical or manual weeding it provides weed control throughout the growing period of the crop. Continuous cultivation of a single crop or crops having similar management practices allows certain weed species to become dominant in the system and, over time, these weed species become hard to control. An integral part of a weed program is to take care that weeds do not need to go to seed, harvesting equipment is not transporting weed seeds, and clean seeds are used for all crops in the rotation. Combining weed control method can help keep weed damage before economic threshold levels and shall be performed rather than a separate control method.
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