What are the correct ways to use glyphosate?

Weed control has become an important content in agricultural production. If weeds are not controlled in time, it will not only increase more investment, such as secondary weeding and manual weeding, but also affect the yield of crops and the quality of agricultural products, seriously affecting agricultural development and farmers' income. Scientific selection of herbicides and reasonable formulation are the key to weed control.

The first is the precautions for the use of commonly used herbicides. First, if the herbicide is absorbed by the roots or buds of plants, it must be applied to the soil before the weeds appear; Some herbicides are mainly absorbed by the aboveground parts of plants, so they must be sprayed on emerging weeds. Some herbicides are adsorbed or rapidly degraded in soil, and lose their activity; Some herbicides are stable in soil and can remain active for a long time. Therefore, the weeding effect of herbicides depends largely on the action characteristics and application techniques of herbicides.

Second, common herbicides should follow two principles. First, weeds should be able to fully contact herbicides and absorb pesticides to the greatest extent; Second, try to avoid or reduce the opportunities for crops to contact pesticides, and ensure that the application of herbicides is effective, safe and economical. If used improperly, it will not only have poor weeding effect, but also cause phytotoxicity sometimes. Therefore, it is very important to understand the principle and method of herbicide spraying technology.

Third, the use of commonly used herbicides. Herbicide can be applied in different ways according to actual needs, such as full-width, strip, spot and directional treatment. Directional spraying must be used when applying herbicides in the growing period of farmland crops. By controlling the height of the sprinkler or installing a protective cover on the sprinkler, the spraying direction of the liquid medicine can be controlled, so that the liquid medicine can contact weeds or soil surfaces without contacting crops.

Finally, talk about the use of glyphosate. First, the dosage of glyphosate. Glyphosate is a systemic and conductive herbicide. Common gramineous weeds are sensitive to glyphosate and can also be killed by low-dose liquid medicine. However, when controlling broad-leaved weeds and some perennial malignant weeds, higher concentrations are needed.

Second, the application time of glyphosate. The action time of glyphosate on weeds is generally when the weeds are in the most vigorous growth, and weeds can not be killed well when the weeds are small, so the best effect should be chosen when the weeds are in the vigorous growth, especially before the weeds bloom.

Thirdly, the temperature and climate when glyphosate is applied. In the range of 24~25 degrees, the absorption of glyphosate by weeds doubles with the increase of temperature, so the effect of using glyphosate in high temperature is better than that in low temperature. But it does not mean that the higher the temperature, the better, because the temperature is too high and the liquid medicine evaporates too fast, so it is difficult to achieve the purpose of efficient treatment.

Finally, it is suggested that glyphosate should not be used in some fields where crops need to be planted.