When July is a hot day, what should I pay attention to when spraying pesticides?

In order to improve work efficiency or control effect, some farmers often increase the amount of pesticides at will, reduce the dilution ratio of pesticides, and increase the concentration of pesticides, even in the high temperature season in midsummer. Due to the rapid evaporation of water under the scorching sun, it is easy to cause chemical damage to plant leaves if the concentration of pesticides sprayed is too high. Avoid overfilling the bucket.

Some farmers like to pour the potion into the sprayer barrel when spraying. This is not only not conducive to spraying, but more importantly, if the sprayer cover is not closed tightly, the sprayer will spill out and stick to the body when walking in the field, which is easy to cause poisoning in the high temperature season. With 4-5 hours of use, more than 80% of the active ingredient can be absorbed into the internal tissues of the crop, and even when it rains, pests and germs can still be killed.

Poor adhesion of binders added to aqueous and wettable pesticides. When preparing pesticides, adding 100 150 grams of soybean flour or laundry detergent as a binder per 100 kg of liquid medicine can improve the use effect of pesticides. It is best to spray pesticides after 8 to 10 a.m. and 5 p.m. and avoid spraying pesticides in stormy weather and scorching sun.

When the wind is strong, the spraying should be stopped, otherwise it will cause uneven spraying and easy to cause pesticide damage. The safe interval for spraying is determined based on the toxicity of the pesticide. Generally, the residue of highly toxic pesticides is more than one month, and the residue of high-efficiency and low-toxicity pesticides is 7-10 days.

Whether it is grain, oilseeds, melon crops, or fruit trees, they must be stopped according to the norms before harvest to prevent human and animal poisoning.

When the weather is hot, people sweat when they don't work, not to mention that it can be very hot when taking drugs in the orchard. Due to the high temperatures, many fruit farmers wear very little clothing when doing farm work, but protective measures must be taken when it comes to combating drugs. When the temperature is high, the pores of the human body are dilated, and the volatile and floating drugs are easily absorbed, resulting in poisoning.

Regardless of the season, early morning is the warmest time of the day. Some fruit farmers want to cool down and start fighting drugs early in the morning. If the time is too early and the dew has not evaporated, the dew on the plant will dilute the pesticide, which is equivalent to reducing the concentration of the pesticide and making the spraying effect worse.

Avoid spraying pesticides at noon, choose cloudy days without rain, be sure to pay attention to body protection measures, and do not increase pesticide concentrations at will. Be sure to clean yourself after application.

In July, the temperature is high, the pesticide volatilizes quickly, and you should pay attention to wearing a mask when spraying pesticides to avoid pesticide poisoning.

Reduce bright light time spraying.

When the light is strong, pests will hide in hard-to-spot backlit places, so it is difficult to spray pesticides on pests. In addition, the temperature is high under strong light, and the pesticide decomposes quickly, which is easy to cause waste.

Summary. Hello, I am glad to answer for you, do not spray pesticides in hot weather, spraying pesticides need to pay attention to avoid strong light. Because in high temperature and strong light, most of the pests will hide in the cool backlight, at this time, not only can not kill the pests, but also the drug decomposes too quickly, resulting in volatilization loss, poor insect control effect, and will cause poisoning of the required personnel.

Can pesticides be sprayed in hot weather? What do I need to pay attention to when spraying pesticides?

Hello, I'm glad to slow down this for you, you can't spray pesticides in hot weather, and you need to pay attention to avoid bright light when spraying pesticides. Because in high temperature and strong light, most of the pests will hide in the cool backlight, at this time not only can not kill the pests, but also the drug decomposes too quickly, resulting in volatile loss, beware of poor insect prevention effect, and will cause poisoning of people who need it.

Dear, don't just change the concentration of pesticides. For high temperature weather, water volatilization is faster, and the concentration of pesticides sprayed at this time is too high, which is easy to cause critical damage to the leaves of crops. For farmers, do not blindly increase the amount of pesticides in order to improve the efficiency of spraying, or to enhance the control effect.

Dear, it is recommended to spray pesticides at low temperature, when there is no rainy day, spray pesticides, and determine the safety interval according to the toxicity of pesticides.

In July, the Meteorological Observatory has issued a blue warning for heavy rains across the country for 32 days, and this frequency has made farmers' hearts beat a little drum. Gradually, there have been four or five heavy precipitations in southern China for a month, and many areas have reached the peak flow of historical data, such as Hubei, which has received five heavy precipitations in June, and the rainfall records in many areas have gotten rid of the highest single-day values after the record. At the same time as the rainfall increases, all parts of the country are also experiencing high temperatures that have not been seen for many years, and even some extreme areas have experienced high temperatures of about 40 degrees.

If you look around the world, maybe you can find that little bit of relief in the heat. On June 20, the temperature in Verkhoyansk, Siberia, Russia, which is located in the Arctic Circle, was 38 degrees Celsius, which was nearly 20 degrees higher than the previous average, and the highest temperature in the Arctic Circle recorded so far. Some fans joked that if it lasted for two years, maybe Siberia, which was inaccessible, would become the world's largest agricultural production industrial base.

Farmers who are cropping in the field must pay attention to cleaning ditches and ditches immediately after heavy rain, and pay special attention to heat and humidification in the case of high temperatures. In addition to the need for agriculture and animal husbandry to protect seedlings and promote growth under high temperatures, there are also some precautions for the application of chemical fertilizers in high temperature natural environments. Due to the high temperature, there are usually some pesticide damages, and there are some drugs that are usually used well, and the actual effect may be discounted in the natural environment of high temperature, or even have no effect.

Let's get the hang of it together. The first point to elaborate is that in the case of spraying pesticides, you must bypass the high temperature period of the day, and if it rains on the same day or after two hours after spraying, you must stop spraying or spray again. This is a misconception that allows us to bypass the harmful effects of high temperatures.

In the end, it is proposed that farmers should avoid the afternoon time range, especially the time period from 10 am to 4 pm, when applying chemical fertilizers under high temperature standards.

We must grasp the proportion of pesticides, grasp the concentration of pesticides, spray must be a small amount of many times, do not use too many pesticides at one time, and do a good job of protective measures.

It should be noted that pesticides can not be sprayed at noon when the weather is particularly hot, because the weather is relatively hot, and it is very easy to get heat stroke if spraying pesticides at this time, and there is no spraying pesticides on cloudy days, because cloudy days are particularly easy to rain, so pesticides have no effect, so you should also pay attention to weather changes.

Generally, the good time for spraying is after 90 o'clock in the morning or 4 o'clock in the afternoon, and the spraying effect is relatively good. Fruit farmers must pay attention to wearing masks and protective clothing when spraying pesticides, and take a bath in time after spraying pesticides to clean their mouths and faces to avoid poisoning. Don't use one pesticide consistently, but rotate or mix the pesticides.

so as not to develop resistance.