The most important method of application of herbicides is spray. The liquid medicine prepared by spraying the herbicide and adding water is called spray liquid (also called spray liquid or spray liquid). Since the herbicide is used at a lower dose, the amount of water is approximately equal to the spray liquid. ? How to determine the amount of water it herbicides on Chinese pesticides Xiaobian for your Weapon:
The first step, the initial decision. The following factors should be considered when selecting the amount of water:
1. Pharmacy. In general, the amount of contact herbicides is > water-supplying herbicide, soil treatment agent > stem and leaf treatment agent. Some of the herbicides according to the physicochemical properties of water should be set as the abundance Kemi original drug is insoluble in water, when the discharge concentration less than 2%, the active ingredient will be crystallized, it is not too large amount of water to 13 -20 liters is suitable; and 2,4-D butyl ester is highly volatile. Although it is a systemic herbicide for stem and leaf treatment, it should not be too low in water. Paraquat is highly toxic and has a large amount of water (using a manual sprayer to spray a diluted solution to 40 times more water) is beneficial to improve the safety of humans and animals.
2, weeds. If the grass in the field is small, the water can be less; on the contrary, the water should be more. The liquid can be completely covered with the weeds to avoid the waste of the liquid.
3. Environment. When the weather and soil are dry, the amount of water should be increased appropriately.
4. Use. According to the pesticide network , the amount of water is closely related to the application method, application method, and application equipment. For example, high-efficiency grass cover can be applied with a knapsack sprayer for 20-30 liters per acre, and a sprayer sprayer is 7- 14 liters; take a low amount of water when used alone, and take a high amount when mixed with broadleaf herbicides.
The second step is to verify. The amount of liquid spray = nozzle flow rate × travel speed ÷ effective spray width. It can be seen from the formula that any one parameter change will cause the liquid volume to fluctuate. Technical indicators such as nozzle flow rate of spray pressure must be calibrated before formal spraying.
The third step is to determine. The selection of the amount of water should be based on pesticides , grass, time and conditions, specific analysis, specific problems, specific solutions.
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