What's the effect of glyphosate herbicide?

What's the effect of glyphosate herbicide? Please introduce the principles and matters needing attention of glyphosate weeding in the farming network, which are listed below for netizens' reference. The principle of glyphosate herbicidal: glyphosate is a chronic broad-spectrum herbicide with internal absorption and transmission, which mainly inhibits enolpropenyl shikimin phosphate synthetase in the body, thus inhibiting the transformation of shikimin to phenylalanine, cooline and tryptophan, so that the synthesis of protein is disturbed, resulting in plant death. Glyphosate is absorbed by stems and leaves and transmitted to various parts of plants, which can control more than 40 families of plants, such as monocotyledons and dicotyledons, annual and perennial, herbs and shrubs. After entering the soil, glyphosate lost its activity by combining with iron, aluminum and other metal ions, and had no adverse effect on the hidden seeds and soil microorganisms in the soil. The method to improve the efficacy of glyphosate: because glyphosate solution has to be transmitted to the underground rhizome of weeds in large quantities in order to have a weeding effect. This requires that weeds have more leaves. Before use, if the weed area is small and the photosynthesis is not strong, the nutrients stored in the roots will be transmitted from the bottom up. At this time, the amount of medicine liquid input down to the roots is very small, which can not have the effect of killing weeds. In the middle and later stages of weed growth, the photosynthesis was strong and the photosynthates were transmitted from top to bottom, and the effect was the best. So the most important thing to use glyphosate is to choose the best time to use it. For example, using glyphosate to control weeds in corn field is best when there are 2-3 old residual leaves in the lower part of corn seedling 1.5 meters high, and when the grass height has reached 10 centimeters. In the range of 24-25 ℃, the glyphosate uptake of weeds doubled with the increase of temperature, so the effect of high atmospheric temperature was better than that of low air temperature. The high relative humidity of the air can prolong the wetting time of the solution on the plant surface, which is beneficial to the drug transmission. When the soil water content is low, it is not conducive to the metabolism of plants, so it is not conducive to the transmission of drugs in weeds, so the efficacy is also decreased. Once again, with regard to the mixing of glyphosate and other herbicides, some farmers want to make more recommendations. In order to save labor, they randomly add other herbicides when using glyphosate, but the results are not good, because some herbicides can not be mixed with glyphosate, such as dimethyltetrachloride, paraquat and other quick-acting herbicides can not be mixed with glyphosate, so as to prevent the aboveground parts of weeds from dying prematurely. The internal absorption and conduction function of glyphosate was lost, and the killing effect of glyphosate on the rhizome of underground weeds was reduced. However, the control effect can be improved by adding some plant growth regulators and auxiliaries (silicone) to glyphosate. There is to choose the best method of application. The method of drug application is very important for glyphosate to control weeds, because the higher the concentration in a certain concentration range, the finer the droplets of the sprayer, which is beneficial to the absorption of weeds. In the case of the same concentration, the more the dosage, the better the weeding effect. Matters needing attention in the use of glyphosate herbicides: glyphosate is a sterilizing herbicide, which will bring safety risks to crops if it is not used properly. Some farmers use glyphosate to weed the ridges of the fields, often because of the dispersion of glyphosate, causing drug damage to the crops next to them. Some farmers did not clean the sprayer as required after using it. As a result, when spraying other pesticides, the residual glyphosate was sprayed on other crops to cause drug damage. If drug damage occurs on rice, the light ones lose green leaves, causing serious growth obstacles, and the serious ones either die early, or do not heading or deformed ears. Click to get more herbicide application techniques