Is spraying in a corn field good after rain?

The effect is good, because generally if you apply the medicine after the rain, the effect must be very good, but you must not apply the medicine before the rain.

The effect of spraying after rain is very good, and it is stronger, which can kill some pests well.

Absolutely. It can allow corn to absorb nutrients better.

The effect of spraying is still relatively good. In this way, the rainwater can seep into the land as soon as possible, and at the same time, these pesticides can be infiltrated into the soil, which is very effective.

After spraying, it generally rains every 4 5 hours without spraying, if it is a contact insecticide every 3 hours, it does not need to be sprayed, if it is a systemic effect, the fungicide is best to rain 5 hours after the application of the effect is better, but some fungicides do not need to be sprayed in the drizzle, so according to the actual situation, there is no unified standard.

Because it takes 2 6 hours of absorption process after post-emergence herbicide spraying to maize, in these 2 6 hours, whether the effect of the herbicide is good or not (that is, whether the weeding effect is ideal) is very closely related to the temperature and air humidity. Spraying in the morning, noon or afternoon when the temperature is high and the weather is dry, due to the high temperature, strong light, the liquid volatilization is fast, and the liquid will evaporate after a while after spraying, so that the amount of herbicide entering the weed body is limited, and the absorption is obviously insufficient, which affects the effect of weeding.

At the same time, spraying pesticides in high temperature and drought makes corn seedlings also prone to pesticide damage. The best spraying time is after six o'clock in the evening, because at this time spraying, the temperature is lower after application, the humidity is larger, the liquid medicine stays on the weed leaf surface for a longer time, the weeds can fully absorb the herbicide components, ensure the weeding effect, and the evening medicine can also significantly improve the safety of corn seedlings, and it is not easy to cause pesticide damage.

Apply pesticides at the right time and at the right time:

The appropriate period is to choose the growth period when weeds are most sensitive to herbicides and corn has the strongest resistance to herbicides, so as to improve the control effect and ensure the safety of seedlings. If it is suitable for pre-sowing treatment of soil, it should be used before sowing; If it is suitable for use before sowing seedlings, it should be used before sowing seedlings; If it is suitable for stem and leaf treatment, it is necessary to avoid the sensitive period of crops. The time is to avoid high temperature, high humidity or strong wind, cooling weather, in order to prevent drug damage or reduce the efficacy of the drug, generally should choose sunny and windless weather, after 5 p.m., it is safer.

Corn is most sensitive to herbicides before the budding stage and the 1-4 leaf stage, and it is easy to produce pesticide damage, and the concentration of herbicides should be paid attention to when applying herbicides at these growth stages. Sprayers and other utensils that have been sprayed with herbicides should be soaked in alkaline water or special cleaning agents in time after use, and cleaned many times to prevent pesticide damage in the use of other crops, and it is best to use special sprayers.

I think the effect of herbicide after rain in the corn field is better, because if the herbicide is applied before the rain, the effect may be greatly weakened, and the rain will wash away its effect.

For some farmers, when planting corn, there are usually some worries that there are some overgrown weeds, which makes them feel very headaches. Because some of these weeds can easily rob the corn of fertilizer, in this case, the corn harvest is very bad, and they also have to buy some herbicides at this time. Then at this time, they need to consider whether it is better to apply herbicides with the past, or it is better after the rain, because we all know that rain can promote the growth of crops, so they also need to consider whether it will inhibit the growth of crops before spraying.

It is better to apply herbicides after rain.

Then we can see that the effect of herbicides in the corn field is of course better after the rain, because we all know that after the rain, some of these crops will grow very quickly. At this time, weeds will also rise from the ground, and when they grow, they will compete with the corn for fertilizer。Before the rain, the growth period of crops is relatively slow, and their growth rate will be visibly increased after the rain, and the weeds will grow rapidly at this time, and herbicides are the best time to apply herbicides.

It does not affect corn ripening.

Therefore, when we plant some crops, we must have a quick approach to these things, so that we can have a better harvest of corn, so as not to say that our growth rate is affected by such weeds. And the herbicide after the rain is also for scientific considerations, and the herbicide will have a more or less impact on the growth of corn. At this time, we need to apply herbicides after the corn has grown for a certain period of time, and the corn harvest will not be affected to a certain extent.

After all, after we applied herbicides, although the weeds are gone, the corn is likely to grow, and it is relatively slow. After all, some of the chemical elements in some of these herbicides will affect the food harvest, so after the herbicide is applied, the growth rate of corn will be much slower. At this time, after he has grown to a certain maturity stage, it will not affect the purpose of our corn planting.

In general, it is not very good to apply herbicides before rain or after rain in corn fields. It is best to choose a time such as 10 a.m. or 5 p.m. when the weather is good, and the temperature is too high, which is not conducive to the effectiveness of the herbicide.

The effect of herbicide before or after rain is not particularly good, if you hit it before rain, the herbicide generally takes about 6 hours to work, but if it rains during this period, the herbicide will be washed away, so that the effect of weeding can not be achieved. If you hit it after the rain, there are still water droplets on the leaves, and at this time, the herbicide will also reduce the concentration of the herbicide, and the weeding effect will also be reduced.

Of course, herbicides will be more effective after rain, and they can protect the corn field more effectively.

Want. From the beginning of sowing, corn seeds should be mixed first, and then sown, for common pests and diseases, can play a good preventive effect, and although the seed dressing agent is not a sprayed pesticide, but also a kind of pesticide.

Next, when the corn grows to 3-5 leaves, to weed, you need to buy herbicides, if the field does not carry out weeding work, weeds and corn compete with each other for water and nutrients, affecting the normal growth of corn, and the final yield and quality will be reduced.

Corn continues to grow, if there is a vigorous plot, it is necessary to spray a vigor control agent, and the corn is controlled to control the corn, which is not only conducive to the normal growth of corn, but also can improve the lodging resistance of corn, and wait until the middle and late stages of corn to reduce the probability of lodging.

Planting corn will inevitably encounter pests and diseases in the process, and pesticides are needed to prevent and control it. For example, the size spot disease of corn can be prevented by increasing the yield of high-harvest corn**, and it also has the effect of increasing yield.

Corn that has just rained can control the allergy of the drug, and if the corn rains within 2 hours of spraying the drug control, it needs to be sprayed again. If it rains after 6 hours, there is no need to respray. In the case of more rainfall or heavy rainfall, it is also necessary to re-spray the growth control agent, because at this time, the soil moisture content increases, and the moisture in the corn plant will also increase, which will have a certain impact on the efficacy of the growth control agent, resulting in a decrease in the efficacy or even complete failure.

You'll find some corn fields, and of course herbicides work well after rain. Because we know that after the rain, such crops will grow very fast. At this time, weeds will also grow.

When I grow up, I compete with corn for fertilizer. Before the rains, the growth period of crops was slow, but their growth rate increased significantly after the rains. At this time, weeds also grow rapidly.

At this time, herbicide is the best time. For some farmers, growing corn often has overgrown areas, giving them a lot of headaches.

Such weeds are easy for corn to take away fertilizer, so corn harvest is very bad, so, at this time, they also go to buy herbicides, at that time, they need to consider whether it is more effective to apply herbicides together or after rain. If it rains just after applying the herbicide, it may affect the weeding effect and will not be able to play its original role. After the herbicide is sprayed, it takes a certain amount of time for its efficacy to exert its effect, and the time for the general herbicide to exert its efficacy.

Depending on the herbicide used, the length of time varies to a certain extent, and it generally takes at least 6 hours to take effect. After the herbicide is applied, it rains for a short time, the herbicide concentration will weaken, and the effect of use will be reduced. Especially herbicides that take 12 hours or even longer will be less effective.

Crops have different herbicide resistance at different times, and crops that are too small are susceptible to pesticide damage.

Generally, our common crops, corn, soybeans, etc., should be sprayed with herbicides after 3-5 leaves after emergence. As you probably know, if it rains right after applying herbicides, you're going to end up in vain. Although the herbicide also does not need to be effective, it generally takes half a day to be fully absorbed, so pay attention to the weather before spraying the herbicide and do not spray before it rains.

Select high-quality varieties, generally select medium and late maturing varieties with high yield potential, dense tolerance and compactness, and large spike type, so as to ensure strong lodging resistance and good disease resistance.

It is good to shoot after rain, because it can increase the production of corn, it can also make corn grow better, it can also prevent corn from being pested, and it can also prevent corn from drought, and if it is good, it can also make corn grow very tall.

Of course, it is better to play after the rain. Applying herbicides before rain may cause herbicides to not be absorbed by the soil and not be effective in weeding. Herbicides can be better absorbed after rain. It also prevents weeds from growing.

It is better to fight after rain, which can ensure safety and avoid pesticides being washed away by rain.