Glyphosate has a significant effect on the control of dodder
Soybean dodders, everyone listens to this name, may not know what it is, in fact, it is a weed, there is a name called Wu Gen Teng. After soybean seeding and emergence, the seeds of Cuscuta in the soil also began to germinate. After the young stems protruded from the soil surface, the nutrients of the soybean plants were absorbed, and the pods of soybeans were reduced. In severe cases, the whole soybeans withered, with a large yield and quality of soybeans. Impact. In the past, we used acetochlor, lansole, and diltiazem in the pre-emergence seedlings, and the effects were not satisfactory. In recent years, farmers in soybean producing areas have used glyphosate. The control of dodder has achieved good results. The control effect is generally above 85%.
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The principle of using glyphosate to control dodder is mainly to use the difference of glyphosate resistance between parasitic and host plants, that is, soybean has strong resistance to glyphosate, and can tolerate a certain range of liquid medicine. Concentration, while the resistance of dodder is very poor. The method is to harm the early stage of soybeans and the occurrence period of the field in the field shortly after emergence of the dodder. When the center of the dodder is found, spray it on the soybean plant at the center of the disease with a 400% dilution of 10% glyphosate. Spray it evenly and do not leak. 10-15 days after spraying, the dodder was killed in large numbers. However, 3-4 days after the drug, the young leaves of soybean began to yellow, which showed slight disease performance, but had no significant effect on its growth and development. After about 7 days, the rate of yellowing plants stopped expanding, and all young leaves turned green after about 10 days. , return to normal growth. In addition, it should be noted that since the dodder is constantly occurring in the field, it should be inspected once every two weeks after the first use of the drug to achieve the purpose of thorough prevention.