1. How to improve the weeding effect of glyphosate
Glyphosate is an organophosphorus-based endotoxin-conducting herbicide. The liquid must be transferred to the root tissue of the weeds in large quantities to achieve the desired herbicidal effect. This requires weeds with more leaves than before. With a small area of ​​grass and leaves, the photosynthesis is not strong, then the nutrients in the roots are transmitted upwards. At this time, the amount of the medicinal liquid entering the root downward is very small, and the effect of killing the grass is not achieved. On the other hand, weeds have strong photosynthesis in the middle and later stages of the growth, and photosynthetic products are transmitted from the top to the bottom. At this time, the herbicide has the best weeding effect. Therefore, the most important use of glyphosate is to choose the best time for the drug. It is best to use the herb before flowering in the most vigorous growth period. The annual weeds are usually 15-20 cm and the weeds are used at a height of about 30 cm. Herbicides have the best weeding effect. Regardless of the growth period of weeds, blindly spraying and weeding will not achieve the desired results after the weeds age. In addition, we must consider the type of weeds in determining the drug concentration, general grass weeds are more sensitive to glyphosate, can be killed by low-dose liquid, and to prevent the broad-leaved weeds have to increase the concentration, For some weeds that reproduce rhizomes, higher concentrations are required. Weeds have large leaf age, increased drug resistance, and correspondingly higher dosages. If we control weeds in the orchard, annual grasses can use 10% glyphosate 500-700 ml of water for 30-40 kg to prevent annual weeds. Broad-leaved weeds should be increased to 750-1000 ml, and the amount of perennial weeds should be increased to 1250-1500 ml. However, when the drug is used excessively, it will quickly kill the plant conduction tissue, but it will not absorb the drug solution and reduce the efficacy. Therefore, in order to use the medicine economically, the young grass should be killed at a lower concentration, and then the virulent weed should be sprayed with the corresponding concentration after 10 days. Secondly, on the issue of the compounding of glyphosate and other herbicides, some farmers want to eliminate various kinds of grass. In order to save time and labor, when using glyphosate, other herbicides are arbitrarily added, but the result is not good. Because some herbicides can not be used in combination with glyphosate, such as Gramoxone, paraquat and other fast-acting herbicides (to avoid premature death of some parts of the weeds, loss of glyphosate's systemic uptake function, and lower glyphosate Phosphine on the killing effect of underground grass stems), but adding 0.1% detergent powder or adding diesel oil to glyphosate can increase the permeability and adhesion of the liquid and increase the efficacy.
2. Pay attention to the safety of crops when using glyphosate
Glyphosate is an ineffective herbicide. If it is used improperly, it will cause safety hazards for farmers. When farmers use glyphosate for weeding, they often fail to put a protective cover on the sprinkler. Glyphosate drifts in the wind and causes damage to crops. Some farmers still did not clean the machine after use. As a result, when spraying other pesticides, the remaining glyphosate was sprayed on other crops to cause phytotoxicity, causing damage to farmers.
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