It s okay for the herbicide to rain for a long time, and does it still work when it rains more than

The rain after the post-seedling herbicide is more than 8 hours does not affect, and it is basically absorbed by the weeds after spraying, which has played a weedicidal effect, and the rain will not have an impact on the post-seedling herbicide. Generally, if there is no rain within 6 hours after the herbicide, there is no need to respray.

Generally speaking, rain within an hour has no effect.

1. Generally, herbicides are shot.

If it rains after six hours, it will not affect the efficacy of the drug, and if it rains within six hours after the herbicide, it is recommended to wait one to two weeks later.

Observe the condition of weeds in the field and consider whether respraying is necessary. When respraying, pay attention to controlling and reducing the dosage, or choose a different mechanism of action agent to respray to avoid pesticide damage and ensure the prevention effect.

2. If the rainfall reaches moderate rain and above, it will cause too much moisture in the plant due to the more soil moisture in the field, which will dilute and reduce the content of the agent absorbed in the plant, and at the same time, too much water will also affect the conduction and transportation of the agent in the body, so the agent will have a certain impact on the weed control effect. This situation requires re-spraying to control weeds.

3. If the rainfall is too long and the light is insufficient, it will affect the conduction and transportation of the agent in the weed, and have a great impact on the mechanism of action of the agent. This situation requires re-spraying.

Summary. Hello dear, welcome to answer for you, it works when it rains for an hour of herbicide, but the effect is not very large, and the general herbicide can fully exert its effective effect after two to three hours after spraying.

Herbicide for an hour is useful when it rains.

Hello dear, welcome to answer for you, it works when it rains for an hour of herbicide, but the effect is not very large, and the general herbicide can fully exert its effective effect after two to three hours after spraying.

Herbicides are chemicals that kill weeds or harmful plants without affecting the normal growth of crops. It can be used to control weeds in farmland or kill weeds or shrubs on non-agricultural land. According to its action characteristics, it can be divided into selective herbicides and biocidal herbicides, selective herbicides refer to the use of a certain dose and concentration range, can selectively kill some kinds of plants, and other kinds of plants are harmless.

For plots that intend to grow eggplant, peppers, cabbage, radish, cabbage, cabbage, if the previous crop has been used, imidazole ethyl niacin must be planted at an interval of 40 months; Perchlorsulfuron-methyl must be planted at an interval of 36 months; Nicosulfuron-methyl has been used, and the dosage of active ingredient per hectare exceeds 60 grams, that is, 4% nicosulfuron is more than 100 ml per mu, and must be planted at an interval of 18 months; With the use of azolesulfachlor, the dosage of active ingredient per hectare is 48 60 grams, that is, 80% azolesulfachlor grams per mu, and must be planted at an interval of 26 months; With persulfafen, the dosage of active ingredient per hectare is 375 grams, that is, 100 milliliters of 25% sulfafen per mu, and it must be planted at an interval of 18 months. In addition, dichloroquinolic acid was used in the previous crop, and the dosage of active ingredient per hectare was 106 177 grams, and peppers, eggplants, and radishes should be planted at intervals of 24 months; The previous stubble had been used with azinone, and the dosage of active ingredient per hectare was 350 700 grams, that is, 70% azinone was 33 67 grams per mu, and radish should be planted at an interval of 18 months.

Agricultural Q&A. Is it still effective when it rains with herbicides, and how long does it take for herbicides to turn yellow.

1. Rain will not affect the efficacy of the herbicide 6 hours after the herbicide If it rains within an hour, you can observe it for 1-2 weeks before choosing whether to spray it again. 3. If the rainfall is high and affects the absorption of the efficacy, it may need to be sprayed again. 3. Use contact herbicides such as paraquat to turn weeds yellow in about half a day, use glyphosate and other systemic herbicides to remove and duanba, turn yellow in about 7-10 days, and use full-effect herbicides such as methyldisulfuron, turn yellow in 15-25 days.

1. Is it effective when it rains with herbicides?

1. Generally speaking, raining after 6 hours of spraying the sail herbicide will not affect its efficacy.

2. If it rains within 6 hours, you can wait for 1-2 weeks to observe the growth of weeds in the field, and then see if you want to spray again. When re-spraying, it is necessary to pay attention to reducing the amount of herbicide, or choose a different herbicide to re-spray, so as to avoid pesticide damage and ensure efficacy.

3. If the rainfall is high and the precipitation of moderate rain and above is reached, at this time, the soil moisture in the field is more, and the water absorbed by the plant will also increase, resulting in the dilution of the agent absorbed in the plant body. In addition, too much water in the plant will affect the efficiency of drug transport in the body, so this situation may need to be re-sprayed to achieve the effect of weeding in the field.

After 8 hours of seedlings, Hongyu herbicide does not affect the rain for more than 8 hours, and is basically absorbed by weeds after spraying, which has played a weedicidal effect, and the rain will not have an impact on the herbicide after seedlings. The post-seedling herbicide has not affected the rain for more than 8 hours, and the herbicide has been fully in contact with the weeds or absorbed by the weeds, which has played a role in inhibiting the physiological and biochemical metabolism of weeds or killing part of the weed tissues, and has played a grass-killing effect, and the rain will not have an impact on the post-seedling herbicides. While most post-emergence herbicides are basically systemic herbicides, the absorption time is very short, and after 2-3 hours, the sprayed herbicide can obtain most of the absorption.

Therefore, generally rain will not have any effect on post-emergence herbicides after the effect is absorbed. Generally, there is no rain within 6 hours after the herbicide is not re-sprayed, the rainfall is divided into big and bright rain, heavy rain, light rain and foggy rain, light rain and foggy rain and the time is short, it is not necessary to re-spray, if it is heavy rain, heavy rain and a long time needs to be re-sprayed.

Apply herbicides. It's okay to rain for 24 hours.

Common herbicides are atrazine.

Bensulfuron, etc.

Atrazine herbicide can control a variety of annual grasses and broadleaf weeds. It is suitable for corn, sorghum, sugarcane, fruit trees, nurseries, woodlands and other dryland crops to control horsetail.

Barnyard grass, dogtail grass.

Sedges, kanmai niang, knotweed, quinoa, leguminous weeds.

How to use:1The use of corn field summer corn is used before emergence after sowing, and the soil organic matter quality is 1% to 2% in North China, Shandong and other places, 150 to 200 grams of 50% wettable powder per mu, or 175 to 200 ml of 40% suspension agent; Northeast regions with soil organic matter content greater than 3% to 6%.

200 to 250 grams of 50% wettable powder per mu, or 200 to 250 grams of 40% suspension agent, the lower limit for sandy soil and the upper limit for clay soil. 1 to 3 days after sowing, spray the soil surface evenly on 30 kg of water. After the emergence of corn, the appropriate period is the 4-leaf stage of corn and the 2-3-leaf stage of weeds; For sandy soils with low organic matter content, use 200 to 250 grams of 50% wettable powder or 40% suspension agent per mu.

Spray on 30 to 50 kg of water. Spring corn per mu with 40% suspension agent 200 to 250 ml, add 30 to 50 kg of water, spray the soil surface before seedlings after sowing, mix soil after spring drought medicine, or appropriate amount of irrigation. Or in the 4-leaf stage of corn as stem and leaf treatment.

Corn and winter wheat.

In the continuous cropping area, in order to reduce or eliminate the pesticide damage of atrazine to wheat, atrazine can be used to reduce the amount of atrazine and mix it with herbicides such as Caojingjin Budu, Lasso, Doer, 2,4 to D butyl ester, Companion Farmer and Green Myron.

2.5 to 7 days after the cane is planted, the weeds are partially unearthed, 200 to 250 grams of 50% wettable powder or 40% suspension agent per mu, 30 kg of water is added, and the surface is evenly sprayed.

3.Tea gardens, orchards, vineyards use the peak period of weed germination in the field from April to May, first eradicate the grass and overwintering miscellaneous stripes that have emerged, and then use 250 to 300 grams of 40% suspension agent per mu, and evenly spray the soil surface with 40 kg of water.

Atrazine is a herbicide for pre-bud soil treatment, and can also be treated with stems and leaves after budding. Drought has a great impact on the efficacy of the medicine, and it mainly acts on dicots.

Focusing on closure, the effect on grass is not ideal. It also has a certain inhibitory effect on some perennial weeds.

The residue period of atrazine in the soil is generally about 6 months, because its residue period is relatively long, so it needs to wait for a period of time after application before planting the next crop is scattered, for cucumbers, it generally needs to wait about 40 months to plant, and tobacco, alfalfa, sugar beet, rape, flax and other crops also need to go through 24 months before planting.

Summary. Hello, after applying the herbicide, you need to wait for at least 24 hours for it to rain, which ensures that the herbicide is fully absorbed and utilized to maximize the effect. If it rains too early, the herbicide may be washed away, affecting the effectiveness of the herbicide.

Also, if you are going to use the herbicide before it rains, it is recommended to check the weather forecast before using it to ensure that there is at least 24 hours of clear time for the herbicide to fully absorb. It should be noted that if an excessive amount of herbicide is used, even if it rains after 24 hours, it may have an impact on the surrounding environment, so it is necessary to use the herbicide strictly according to the dosage of the instructions. The use of herbicides needs to pay attention to safety to avoid accidental injury to people and animals, and at the same time, it is also necessary to pay attention to environmental protection to avoid pollution of soil, water and ecological environment.

In addition, in order to reduce the frequency of herbicide use, non-chemical methods such as mechanical, physical and other methods can also be used for weeding, which can better protect the environment and ecosystem. In conclusion, the use of herbicides is a job that needs to be treated with caution, and it is necessary to follow the relevant regulations and instructions, and pay attention to safety and environmental protection.

Hello dear. About the herbicide after the rain the next day will be fine.

Hello, after applying the herbicide, you need to wait at least 24 hours for it to rain, so that you can be sure that the herbicide is fully absorbed and utilized to exert the maximum effect. If it rains too early, the herbicide may be washed away, affecting the effectiveness of the herbicide. In addition, if you want to use herbicides before rain, it is recommended to check the weather forecast before using them to ensure that there are at least 24 hours of clear weather for the herbicide to be fully absorbed.

It should be noted that if an excessive amount of herbicide is used, even if it rains after 24 hours, it may have an impact on the surrounding environment, so it is necessary to use the herbicide strictly according to the dosage of the instructions. The use of herbicides needs to pay attention to safety to avoid accidental injury to people and animals, and at the same time, it is also necessary to pay attention to environmental protection to avoid pollution of soil, water and ecological environment. In addition, in order to reduce the frequency of herbicide use, non-chemical methods such as mechanical, physical and other methods can also be used for weeding, which can better protect the environment and ecosystem.

In conclusion, the use of herbicides is a job that needs to be treated with caution, and it is necessary to follow the relevant regulations and instructions, and pay attention to safety and environmental protection.

Dear, do you have any other problems that you don't understand and need to solve for you?