How to treat water with herbicides is often a problem that people are particularly easy to ignore. It is not known that water can greatly improve the effect of herbicides. Reasonable watering should refer to the following four factors:
1. Herbicide varieties
The water consumption of some herbicides should be determined according to their physical and chemical properties. For example, the original drug of Kaimifeng is insoluble in water. When the concentration of the spray is less than 2%, the active ingredient will crystallize, so the water content should not be too large. 20 liters is suitable; and 2,4-D butyl ester is highly volatile. Although it is a systemic herbicide for stem and leaf treatment, the water consumption should not be too low. Paraquat is highly toxic, and the large amount of water is beneficial to improve the safety of humans and animals.
2, weather effects
When the weather and soil are dry, the amount of water should be increased appropriately.
3. Weed species
If the field is thin and the grass is small, the water can be less; on the contrary, the water should be more. The liquid medicine can completely cover the weeds, avoiding pesticides flowing and causing waste.
4, spraying equipment
The amount of water exchange is also closely related to the application method, application method, and application equipment. For example, high-efficiency grass cover can be applied by a knapsack sprayer with a water consumption of 20 to 30 liters per acre. If a sprayer is used, the water consumption per acre is 7 to 14 liters. In addition, the amount of water used is low when used alone, and is high when mixed with broadleaf herbicides.
Tips for China's pesticide network : protective measures for summer spraying
Fat Caster
Ningbo Mywin Caster Co., Ltd. , https://www.mywin-caster.com