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

<> at noon, when the stomata on the surface of the object are opened, the breathing is vigorous, and the evaporation of water is intensified. At this time, the powder or acid-base components in the agent are applied to the stomata of crop leaves and stems, increasing the burden of crop water supply, destroying the physiological function and organizational mechanism of crops, and causing the young parts of crops to produce "wilting" or leaves to produce "burn spots". The body temperature of pests changes with the change of environmental temperature, and when the ambient temperature is too high, it will interfere with the normal metabolism of the insect and cause the physiological function of the insect to be disordered.

Therefore, at noon, when the temperature is hot, pests take refuge in the shade, some lie still on the back of the leaves, some hide in the crevices of the nearby grass, and some lurk under the old bark of the branches or burrow into the tree holes.

The vast majority of plants, the required nutrients, in the case of low temperature absorption effect is the best, and in the morning due to the dew is larger, undoubtedly greatly reduce the proportion concentration of pesticides, at the same time because of the large dew of crops, at this time, a part of pesticides drip to the ground with the dew, thereby reducing the use of pesticides adsorbed to the foliar surface of crops, reducing the use of crops. The ability to significantly improve the efficacy, after a night of absorption, the absorption and utilization rate of endogenous pesticides is higher, if in the strong sunlight in summer, there will be some transpiration and volatilization after atomization of the liquid medicine, reducing the efficacy, and it is easy to produce pesticide damage to the fruit surface leaves, and the commodity rate decreases.

Too hot at noon, pesticide spraying is easy to dry, so it does not play much role in insects, and another is that people sweat a lot when spraying pesticides because the weather is too hot, and pesticides are easy to be poisoned when sprinkled on the body, generally wait for the dew to spray pesticides or spray the best in the afternoon, I think so, sprayed pesticides are emitted into the air, forming a non-flowing pesticide aura. At this time, people are working in high temperatures, sweating, the pores of the human body are open, and the drugs emitted in the air enter the capillaries through the pores, plus breathing into the lungs, people are easy to be poisoned by medicine, and the heavy ones die, and the light ones are hospitalized and take medicine.

Pesticides can also be sprayed in hot weather, but the effect is not very good. The precautions for spraying pesticides are: first, you must take protective measures, wear masks, gloves, protective clothing, etc., and try not to touch pesticides with your hands.

Second, do not drink alcohol after spraying pesticides, which can easily lead to poisoning.

If you can spray pesticides in hot weather, pay attention to the appropriate amount when spraying pesticides, not too much and not too little, pay attention to even spraying, and pay attention to personal protection.

Yes, avoid spraying in the middle of the day.

Spraying chemical pesticides when the temperature is high and the light is strong around noon, first, the agent is highly volatile, which is easy to cause poisoning to the applicators; Second, most of the pests are hiding in a cool backlit place, spraying is not easy to hit the target, at the same time, the pesticide decomposition is fast, volatilization loss is large, and the insect control effect is not ideal.

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 the middle of summer, it is best to spray pesticides in the morning and evening, mainly for the following reasons.

Spraying pesticides in the morning and evening is more effective than at other times, especially in the middle of the day.

First of all, we need to know that the living habits of most insects are nocturnal and diurnal, and the frequency of activity in the evening or nocturnal is much higher than at other times. Typical such harmful insects are cotton bollworm, dark golden beetle, African mole cricket, soybean poison moth, rice borer, peach borer, and rice leaf roller. Most of them are also insect pests that are afraid of light and heat.

Especially in the summer, the sun is strongest at noon, so it will be avoided at noon, so it is best not to apply the pesticide at high temperatures at noon, the effect will be much worse.

2.Spraying pesticides in the morning and evening has a long effect.

Pesticide liquid, generally have the characteristics of volatile and easy to decompose, if it is in the morning and evening, the molecular activity in the air will be more stable than at other times, at this time the application, the liquid medicine is not easy to volatilize and transpirate quickly with the air molecules, and the effect time will be much longer.

3.It brings less pesticide damage to crops.

In the morning and evening, the stomata on the surface of the object are closed, and the breathing is slow, and the water is not easy to evaporate. At this time, the powder or acid-base components in the agent are not easy to destroy the physiological functions and tissues of the crop, so that the young part of the crop will "wilt" or the leaves will produce "burn spots".

4.Morning and evening application of pesticides can reduce adverse effects on human health.

The temperature is low and windy in the morning and evening. If it is in the case of high temperature and no wind at noon, pesticides volatilize into the air, the concentration of drug molecules in the air is easy to increase, these polluted and poisoned air enters the human body through the respiratory tract or capillaries, and the human body's resistance decreases under high temperature operation, often produces pesticide poisoning and heat stroke syndrome, which is easy to cause life danger, and accidents of pesticide poisoning occur from time to time every year. Therefore, it is better to choose a cloudy or sunny day in the evening.

Therefore, under the high temperature in summer, it is best to spray pesticides in the morning and evening, so that the pesticide effect will be better.

It can absorb these pesticides well, can evaporate water, can kill these germs well, will not affect the yield of crops, and will not produce pesticide damage.

Because the temperature in the morning and evening is not very high, the effect of pesticides will be relatively good, and it is good for crops, so it is recommended to spray pesticides during this time period.

Because the temperature of these two times is relatively low, it is avoided that the drug will evaporate due to high temperature, resulting in poisoning of the applicator.

Due to the relatively low temperature of these two times, applicator poisoning due to the evaporation of the drug at high temperatures is avoided.

The reason is very simple, in hot weather, if the pesticide is sprayed at noon, it will affect the pesticide and increase this volatilization, which will lead to the inability to give full play to the efficacy. Pesticides are sprayed after water and drugs are fully stirred, the temperature is too high at noon, if we go to spray, then it is easy to volatilize these waters, and will soon be dried by the sun, and the time for these drugs to remain on crops will be greatly reduced, which is not conducive to the absorption of pesticides by crops, is not conducive to disease prevention and control, and is not conducive to insecticide. <>

We spray pesticides just to treat diseases and kill insects, and many insects will not come out at noon, basically they are hidden, after all, the habits of insects are active in the morning and evening. We only choose to spray pesticides when the insects are active, then the effect will be very obvious, if we choose to hide the insects at noon, we spray pesticides basically will not have much effect. <>

Spraying pesticides at high temperatures at noon will be prone to pesticide damage. In fact, the temperature is very high at noon, crops are basically in a state of heat dissipation, if spraying pesticides at this time, the water of pesticides is either warm or cold, pesticides contact crops will have a physical reaction, when high temperature meets low temperature, it will naturally affect the growth of crops, it will be easy to burn spots, and even root burning, so it will choose to use pesticides in the morning and evening. <>

Spraying pesticides in the morning and evening has a great advantage, the temperature is not high in the morning, so it is more conducive to the crops to absorb these pesticides, which can have a good effect on preventing some bacterial diseases and insecticide. Pesticides are sprayed on crops, it needs to have an absorption time, about 3 or 4 hours, and it is often better to absorb when the temperature is not high, generally speaking, it is more appropriate to absorb between 20 and 30 degrees, and more than 30 degrees will often have an impact.

This is because when spraying pesticides in hot weather, they are particularly volatile and play a relatively low role, so spray pesticides in the morning and evening.

Mainly because in high temperature weather, if the temperature is the highest to spray pesticides, it is likely to cause the pesticides to volatilize too quickly, and then before they have played a substantial role, they have been volatilized.

Because of the high temperature weather, pesticides are easy to volatilize, and the effect can not be completely applied to crops, so pesticides should be sprayed in the morning and evening.

This is because in hot weather, pesticides melt too quickly, which will cause pesticide damage, which is not conducive to the growth of crops, so spray pesticides in the morning and evening when the weather is cool.

First of all, avoid spraying in the middle of the day. Secondly, try to choose cloudy days without rain to spray. Third, do not arbitrarily increase the concentration of the liquid medicine.

Fourth, select fast-acting and systemic pesticides. Fifth, add adhesives and water agents to aqueous and wettable powder pesticides. Sixth, determine the safety interval of spraying according to the toxicity of pesticides.

In life, farmers spray pesticides in hot weather, and they must pay attention to safety. Because if you spray pesticides in this hot weather, the smell will be very strong, and there is a possibility of poisoning. The weather is very hot and there may be heat stroke, so farmers need to wear masks, hats, sun protection, and gas masks if possible.

Do not use pesticides in hot weather, and be sure to water in time after using pesticides, and at the same time should do a good job of personal protection.

After the rainy season, the temperature gradually rises. With the growth and development of crops, spraying pesticides on crops is also an indispensable stage. However, in the process of spraying, it will be found that the effect of spraying is not very good, and farmers think that there is a problem with chemical fertilizer, but in fact it is not.

Do you really have to master how to spray pesticides? Spraying pesticides on hot days, are you really spraying correctly? Farmers should not be inappropriate, otherwise the money may not have practical results.

So how do you spray pesticides in hot weather? In fact, it is not so difficult, just grasp this key point, you will be able to get started simply, the author will describe to farmers and friends, how to spray pesticides in high temperatures, without damaging crops and can fully give full play to the power of chemical fertilizers.

1. Choose the time to spray pesticides in general after noon, when the temperature is a senior title, can do more than 30, and the sun irradiation is strong, spraying pesticides, the play of the medicine will also be strong, it will easily lead to the poisoning of the sprayer, followed by this temperature, the vast majority of insect pests will also hide in the shade, that is, the LED backlight of green plants, the volatiles of the drug are fast, and the spraying can not be pested, so the effect of spraying at this time is not too big. The appropriate method is generally in hot weather conditions, and the spraying time period should be before 10 o'clock in the morning and after 4 o'clock at noon. The temperature is around 25, which is more suitable.

If it's spring and autumn, choose between 11 a.m. and 2 p.m.

2. In the case of spraying, what kind of climate should be selected? It can be selected to wear a hat on a rainy day in a rainy mountain, if the wind is very strong, stop spraying, because the spraying is uneven at the moment, it is very easy to cause damage to crops. Naturally, you can't choose a rainy day, because the medicine sprayed at this time will be washed away with precipitation, which is equivalent to white spray, and has no practical effect at all.

3. According to the characteristics of the disease to clearly prevent whiteflies (fly away when touched), spray before the dew drops dry in the morning; To prevent diseases, spraying is carried out before the rain, before the rain, before the rain, and before the rainy day (because many diseases are spread by water, wind and rain, this is the best time to prevent disease spraying).

4. The fertilizer must also be moderately applied according to the indication, which can be slightly supplemented according to the obvious degree of pests, but it cannot be doubled, otherwise it will not play a role if the money is spent. If the pesticide can not achieve the actual effect of pest control, on the one hand, you can change to another chemical fertilizer, on the other hand, you can improve your own spraying technology, such as the above method, must be bypassed.

First of all, the staff must wear long pants, and then they also need to wear masks and gloves, and at the same time they must wear protective clothing, and then when taking medicine, they can also choose to be at 10 o'clock in the morning, and they also need to control the amount, and then they also need to pay attention to the appropriate concentration, and they must avoid the time when the sun temperature is relatively high.