Matters needing attention in using pesticides in winter

The temperature is relatively low in winter, and most of the diseases and insect pests are in a state of shade and stillness, but there are still many greenhouse growers who grow vegetables out of season. at this time, many friends have doubts: what should we pay attention to if we need pesticides to grow vegetables in winter? Let's get to know it with the editor.

1. Application temperature

Temperature plays a very important role in the use of pesticides, under the appropriate circumstances of the greenhouse, the effect of pesticides will be better, and will not produce drug damage. On the other hand, if the temperature is too high, it will not only cause heavy fertilizer of pesticides, but also often outweigh the gain in the event of drug damage. Therefore, when using pesticides in winter, it is recommended to choose temperature conditions above 10 degrees, of course, 15 degrees or 20 degrees will be better. At the same time, we should pay attention to the weather forecast. At the end of the future after spraying pesticides, there is no strong cooling and rainfall.

2. Spraying time

The temperature when spraying is actually the temperature when spraying, and the highest temperature of the day is of course around noon, so it is best to use pesticides in winter after 10:00 and before 15:00 in the afternoon. During this period, the temperature is higher, and the effect is better after spraying. If it is too early or too late and the temperature is low, the effect is not very good, resulting in waste and possible drug damage.

3. Weather of pesticide application

We should also pay attention to climate change when spraying, in which pesticides cannot be sprayed on cloudy and rainy days. as we all know, being washed away by Rain Water after spraying is tantamount to no spraying, on the contrary, it may also cause drug damage. Therefore, the best spraying time is to choose sunny weather, it is best to be windless, because the wind will blow the liquid medicine to other crops, if the herbicide is sprayed, the vegetable leaves will be removed by the wind, causing drug damage, and the loss will be relatively large. So try to choose sunny and windless weather to spray.

4. The dose of pesticides

In the pesticide spraying dose, do not increase at will, in winter, because the temperature is low, whether weeds or diseases and insect pests, their resistance is relatively low, so only according to the normal dose can be applied, do not worry about the poor control effect, and increase the dose at will, often the final result is that the crops suffer together.

The above is the introduction of matters needing attention in the use of pesticides in winter. I hope I can help you. If you want to know more about it, please follow us.