How to choose good weather for pesticides in summer?

The harm of spraying temperature in summer is also great, so I will share it with you today. Attention should be paid to the following aspects: first, pesticide application will float to people in windy days, which will easily lead to poisoning of pesticide application workers.

The second is rainy days. Pesticides spilled in rainy days are easily washed away by precipitation, and water will not only harm the efficacy, but also continue to cause water pollution.

The third is the hot weather. High temperature will accelerate the evaporation and dissolution of pesticides, while the metabolism of crops is vigorous at extremely hot temperatures, the stomata of leaves are open to the outside world, and pesticides enter crops and cause fertilizer damage.

The fourth is high and low temperature. The environmental humidity is high, the temperature is high, the dew is rich, and pesticides are easily diluted by water, which reduces the efficacy. Especially when dewdrops are not dry, pests do not go out to harm and consume the contact efficacy of pesticides. In addition, pesticide application workers will more or less avoid damage to crops, and if dewdrops are not dried, they will continue to cause damage to pathogens.

When applying pesticide with liquid, it is necessary to avoid the erosion of pesticides on the skin. When applying volatile pesticides, you must use protective masks carefully. At the same time, it is forbidden to spray pesticides at high temperature in summer afternoon. Pesticides should be sprayed before 9: 00 am or after 4: 00 noon in summer to prevent fertilizer damage. The continuous application time should not be too long. Generally speaking, the actual effect of applying pesticide after rain is better than that after or when applying pesticide.

Therefore, we should pay attention to the weather conditions, try to choose sunny time to spray, and improve the control effect. In addition, the application time should be selected according to the regularity of pest theme activities. For example, some daytime pests, such as leaf roller moth or Noctuidae, should be applied at dusk.

In fact, when crops are sprayed with drugs, fine particles of pesticides can adhere to the surface of crop leaves to some extent. When the spraying amount is lower than a certain level, the fine particles on the leaves will condense into solid particles and roll down and flow out, thus reducing the amount of pesticides attached to the leaves.

Generally speaking, the sprayer method stipulates that the quality of the sprayer is uniform, the penetration rate is high, and it is appropriate that the surface of the wet main stem does not drip water, so that the atomization effect of the sprayer is very good and the drug consumption is reduced. At the same time, we should pay attention to all aspects of pesticide application, especially some pests like to lay eggs on the back of leaves, so we should pay special attention when spraying pesticides.

The above is my detailed introduction. I hope it will be helpful to everyone after reading it. If you have other comments, you can discuss them together in the message area below.