What is the best time to spray pesticides in summer and autumn?

First of all, pesticides can not be used in the morning and evening, there is dew on the crops in the morning and evening, which is not conducive to the pesticide attachment to the crops. It is best to spray pesticides around 9 a.m. and after 4 p.m. on sunny days. Because around 9 o'clock in the morning, the leaves of fruit trees and crops are generally dew and dry, and the temperature is not too high, and at the same time, it is the most vigorous time for pest and disease activities, so the spraying effect is better at this time; After 4 p.m., the light gradually decreases and the temperature gradually decreases, and nocturnal pests (whiteflies, thrips.

Start the activity and spray at this time, which also has a higher bactericidal and insecticidal effect.

So it's also the time when pesticide feeding is rampant at sunrise. Therefore, whether in cereals, vegetables and fruits, the best time for crop spraying or crop spraying is 8. By 10 o'clock.

At this time, since the dew is gifted and the temperature is not very high, it is the time when the sun pests feed and live vigorously. At this time, the drug is not diluted by dew.

Therefore, when spraying pesticides in summer, whether it is cereals or vegetables and fruits, the best time should be around 9 to 10 meters. At this time, the dew gradually dries and the temperature is not very high. At the same time, it also reduces the effectiveness of several pests.

Practice has proven that the best time to spray pesticides in the summer, whether it is food crops.

Vegetables, cash crops.

Or fruit trees, it must be around 10:00 and 5:00 p.m. and around 6:00 p.m. What is the reason? This is because pesticides are sprayed around 9:00 in the summer.

Eight to ten a.m. is the best time to plant food crops, cash crops, and fruit trees. About 5 p.m., about 9 a.m., the dew was dry and the temperature was not very high. This is the sunrise plague.

The best time should be eight in the morning. Around 5 p.m., because the dew is dry and the temperature around 9 to 9 is not too high, it's time for the sunrise pests to feed, move, and mate energetically. Therefore, there is no need to use drugs at this time.

Choose 5 p.m. or choose to avoid some sunny times to get a very good pesticide spray.

It is better after 5 p.m., when the temperature is not very high, so that the drug can exert its maximum effect.

Generally speaking, in the summer and autumn high temperature season, the best time to apply pesticides should be around 9 a.m. and after 4 p.m. on a sunny day. At about 9 o'clock in the morning, the general dew has dried, the temperature is not too high, and at the same time, it is the most vigorous time for pest and disease activities, and the effect of medicine is good at this time.

It is best to choose the time to spray pesticides in summer and autumn at night, because the temperature at night is not particularly high, and the humidity is relatively good.

It is true that pesticides should be sprayed when mosquitoes are common in summer, but spraying pesticides also requires certain skills. The method is wrong, the effort is in vain, this sentence has long been known to everyone, so we must master certain methods and skills, so that we can spray pesticides will play a greater effect, can allow us to do more with less, not with half the effort. <>

First of all, it is arranged from the part of the weather. When we spray pesticides in summer, it is best to choose in the afternoon, that is to say, after 5:00, this time period is more appropriate.

The reason why we do not choose morning or noon is mainly to avoid high temperature in direct sunlight, thereby increasing the volatilization of pesticides. Pesticides it takes 4 to 6 hours of absorption, so spray in the morning, then there will be sun exposure at noon, then the efficacy may be reduced, spray at noon and easy to get tired, it is not appropriate to choose, at this time the afternoon is just right, after all, it can be absorbed in the evening and evening for a night. <>

If it is rainy weather, it is not suitable to spray pesticides, and it needs to be delayed appropriately, and if it starts to rain that night after spraying pesticides, then it is necessary to spray pesticides for the second time. Pesticides are soluble in water, after all, pesticides are wet with water, and after rainwater, the pesticides remaining on vegetables and weeds will be diluted. <>

In addition, pesticides also have certain requirements for some insect pests, there are many insects that are basically infested in the evening, and some are infested in the morning, and the pesticide spraying time can be selected according to the infestation time of insects. Like this caterpillar is basically more active in the morning and evening, then we should spray pesticides according to the time of the caterpillar, if the caterpillar hides in this crop, then our pesticides can not play a good role, so we should choose to spray pesticides during their active time period.

At 5:00 a.m. to 6:00 p.m. and 7:00 p.m

00 8:00, 1:00 p.m. 2:00

00, 3:00 p.m. 4:00 p.m., it is best to encounter pesticides during these times, and the effect is also very good.

Generally, it is during the growth period of the plant, and it is best to spray it in the morning or evening, which can have a better effect.

Spraying pesticides should be done at 10:00 a.m. or 4:00 p.m., because the light is not particularly strong at this time.

1. Fungicides.

75 chlorothalonil wettable powder at an interval of 5---7 days.

77 can kill WP for 3---5 days.

50% promethane wettable powder at intervals of 5---7 days.

70% Methyltropia WP 5---7 days apart.

58% Ruixin mildew wettable powder 3---5 days apart.

50% Nonliline WP is available at intervals of 5---6 days.

64% alum wettable powder interval 4---5 days.

65% carbendazim wettable powder with an interval of 18-21 days.

80% Bordeaux liquid wettable powder 15 days apart.

20% benzoconazole wettable powder at intervals of 7---10 days.

50% Jincoco wettable powder is available at intervals of 7---10 days.

50% Pythium WP at intervals of 5---7 days.

25% manganese zinc with nail cream 7---10 days apart.

40% fosilazole wettable powder at intervals of 7---10 days.

40% myxamine wettable powder is available at intervals of 7---10 days.

2. Insecticides.

50% Fly Amine 5-7 days apart.

50% emamectin benzoate is given at an interval of 5---7 days.

70% of imidacloprid are spaced 3---5 days apart.

10% cypermethrin spaced 3---5 days apart.

5% aphid-resistant interval 4---6 days.

20% of the excavations are performed at intervals of 3---5 days.

40% of Lesburn are spaced 5---7 days apart.

35% phosphine at 3---5 days apart.

5% of Doraibao is spaced 4---6 days apart.

25% matrine at intervals of 2---3 days.

Generally, pesticides are sprayed not once every few days. Whether it is a plant or a variety of vegetables, it cannot be said that it takes a few days to spray. It's about observing. When there are bugs that eat the leaves or eat the plants. Then you can go for a squirt. Because there is too much spraying. That's not good.

It is better to spray pesticides after rain, because in this case, the pesticides will last longer, and they will not be washed away by the rain, and most of the pests can be solved.

It needs to be determined according to the growth of the plant, and the time of spraying pesticides is completely different for different plants.

It is best to spray pesticides at the seedling stage, but also to prevent some diseases in advance, so that it can also play a good effect.

The use of pesticides is the most common in our planting and production. When we spray pesticides, we should pay attention to the spraying time, which has a great relationship with the control effect of pesticides. The spraying time should be reasonably adjusted according to the changes of the season, especially in the summer.

1. Spraying time

Many people like to spray pesticides in the middle of the day when they spray pesticides in the summer. I think that the temperature at noon is relatively high, and pests are easy to be eliminated, but this is not true. Because at noon, not only is the temperature high, but the light is also very strong.

Pests are generally hidden in the stems and fruits of plants, making it difficult to control them in place. Moreover, the temperature is high at noon, and the pesticide is easy to be decomposed and volatilized after spraying, which cannot achieve the ideal control effect. In addition, after the pesticide is volatilized, if the gas is inhaled into the human body, it is very easy to cause human poisoning.

Therefore, when spraying pesticides in summer, whether it is growing grains or vegetables and fruits, the best time should be around 9 a.m. At this time, the dew gradually dries out, and the temperature is not very high. At the same time, it is also the time when various pests go out to forage and are the most active.

Therefore, if pesticides are sprayed at this time, they will not be washed away by dew, nor will they be evaporated and decomposed due to high temperatures, resulting in a decrease in efficacy. On the contrary, it can also increase the chance of pests being exposed to pesticides. Or spray after 5 p.m., which is the beginning of the active phase of nocturnal pests and can eliminate nocturnal pests.

2. Precautions

1. Concentration of liquid medicine

When spraying pesticides, many farmers will choose to increase the amount of pesticides used and reduce the dilution of pesticides in order to improve the control effect of pesticides. This leads to an increase in pesticide concentrations, and it remains the same in the summer. Because in the environment of strong light and high temperature, the evaporation rate of water is very fast, if the concentration is too high, it is easy to cause pesticide damage to crop leaves.

Then we should pay attention to the selection of pesticide varieties, mainly pesticides with fast acting and strong systemic properties. For example, dichlorvos, socrine, etc., can destroy pests in about two hours after use.

2. Spraying safety interval

When spraying pesticides, we should also pay attention to determining the safe interval of pesticide spraying according to the toxicity of pesticides. Usually, the residual effect period of highly toxic pesticides can reach as long as one month. If it is a low-toxicity pesticide, then it is generally only about a week.

Therefore, whether it is grain or hanging fruit, it is necessary to pay attention to standardizing the use of drugs before harvesting to avoid human and animal poisoning. In the summer, it is necessary to dilute it with sufficient water. When spraying, the sprayer should not be overfilled, and the lid should be tightly closed to prevent the liquid from splashing on the body, resulting in poisoning.

What we all know is that when it comes to growing crops, it's not that simple. And if you don't pay attention to safety when spraying pesticides, you are likely to cause very serious injuries to yourself. Especially in the summer, because people wear less clothes in the summer, it is even more important to pay attention to their own protection.

So what we are going to talk about today is what needs to be paid attention to when spraying pesticides in summer?

The first thing to do is to be careful when spraying pesticides, and you also need to ensure your own safety when fertilizing crops, that is, to do some protective measures. When spraying pesticides, you must wear masks and gloves, if you apply fertilizer directly, it is likely that the pesticide will get on your hands. And if it enters your own mouth and nose, then the damage to the human body is actually very great.

The second is not to spray pesticides at a time when the temperature is too high when you are in the refrigerator, because if the light is very strong. Then the volatile nature will be very strong when spraying pesticides, which can easily lead to poisoning of the people spraying pesticides.

Don't choose the time point with a lot of dew to spray, and the second is when spraying pesticides, because some people who spray pesticides are very afraid of heat. At this time, they will choose to spray the medicine in the early morning or evening, so there is actually a lot of dew on the crops at this time. And at this time, the pests have not yet come out to move, so try not to choose the time point with dew when spraying pesticides.

It is likely that the efficacy of the drug will be significantly reduced, so when spraying pesticides, try to choose to spray on sunny days.

Pay attention to the concentration of pesticides, and finally you must pay attention to the concentration of pesticides when spraying pesticides, there are many people who increase the amount of pesticides when spraying pesticides in order to be able to work for a shorter time. In this case, if the concentration of pesticides is too high, it is likely that the leaves of crops will also be harmed by these pesticides. Therefore, when spraying pesticides, you must add enough water to ensure the dilution of the drug.

1.Pay attention to the time of spraying pesticides, 2The temperature at which the pesticide is used, 3Humidity of spraying pesticides, 4Concentration of pesticides, 5and not spraying pesticides before or after rain.

It is necessary to pay attention to safety, pay attention to the corrosion of the drug properties, do not apply the medicine in the case of special high temperature, and pay attention to the dosage, and control the time at the same time.