Can urea be applied immediately after herbicide application in corn fields?

After the corn herbicide, urea can not be used immediately, because urea and the herbicide still have a certain reaction, which will make part of the urea fertility loss, this situation is not conducive to plant fertility supplementation, so urea can not be used directly.

*No**, urea cannot be applied immediately after herbicide application in corn fields. This is because there may be a reaction between urea and herbicides, resulting in a loss of a portion of the fertility in the urea, which is not conducive to plant fertility replenishment. Therefore, after applying herbicides, you need to wait for a while before applying fertilizer.

The exact timing can be determined depending on the type of herbicide and the method of application.

In order to play a role in weeding, it is recommended to fertilize every few days!

Yes, urea.

Spray corn with potassium dihydrogen phosphate.

It can be used together, potassium dihydrogen phosphate + urea, which can promote the rapid growth and development of corn, which is conducive to increasing the fullness of corn ears, increasing yield, increasing disease resistance, and greatly improving the speed of corn cob.

40 kg of urea or potassium phosphate.

30-5-5) ratio is close to compound fertilizer.

About 50 catties, about 5-10 cm deep is the best. Top dressing at the ear stage is generally applied from the corn plant 15 to 20 cm, in strips or holes.

In the application according to the soil fertility situation, generally apply about 2 tons of organic fertilizer per mu, and with 10 kg of ammonium fertilizer, 20 kg of phosphate fertilizer, and 6 kg of potassium fertilizer. If the plot is deficient in zinc fertilizer, it should also be appropriately increased by about 2 kg of zinc fertilizer. The basal fertilizer is generally applied in combination with the ground before sowing, which can be applied in holes or strips, and after application, the fertilizer is covered with about 4 cm thick fine soil to avoid direct contact between the seeds and the fertilizer to burn.

Urea can be sprayed on corn, and corn can be applied with urea.

At this stage, it is the corn fertilization period, and farmers mostly use urea as the main fertilizer. However, incorrect fertilization habits not only cause a waste of energy and labor, but also hinder the growth of corn.

After urea is mixed with ammonium carbonate and applied to the soil, it must be converted into ammonium carbonate or ammonium bicarbonate before it can be absorbed by corn, and its conversion rate is much slower than that under acidic conditions under alkaline conditions. Ammonium carbonate is alkaline when applied to the soil and has a pH value. The mixing of ammonium carbonate and urea will greatly slow down the conversion of urea into ammonium carbonate or ammonium bicarbonate, which is easy to cause urea loss and volatilization loss.

Do not sprinkle urea on the surface of the ground, it takes 4-5 days of transformation at room temperature to be absorbed by corn, most of the nitrogen is volatilized in the process of ammoniation, and the utilization rate is only about 30%. If applied on alkaline soils and soils with a high content of organic matter, the loss of nitrogen will be greater, so urea cannot be applied on the surface.

Avoid irrigating urea immediately after applying urea is an amide nitrogen fertilizer, which must be converted into ammonium nitrogen after application before it can be absorbed and utilized by corn. In the process of transformation, due to different conditions such as soil, moisture and temperature, the time is long and short, and it generally takes 2-10 days to complete.

Urea can be used as a nitrogen fertilizer for corn, which is sprayed to provide the nitrogen needed by plants. Normally, corn needs to be supplemented with enough nitrogen fertilizer during the planting process to ensure its growth and maximum yield. Urea is a common nitrogen fertilizer because it contains a high concentration of nitrogen and is easily absorbed and utilized.

Urea can be applied to corn plants by spraying, which allows nitrogen fertilizer to be absorbed and utilized by plants more quickly and avoids nitrogen loss in the soil. When spraying urea, care should be taken not to overspray, otherwise it may cause problems such as burning seedlings of plants. At the same time, it is necessary to pay attention to the selection of the right time and weather conditions to ensure the best spraying effect while avoiding pollution and harm to the environment.

It is recommended to spray in the morning or evening, and avoid spraying under high temperature, strong wind, etc., to avoid the loss of pesticides or the impact of aerosol diffusion on the surrounding environment.

Urea can be sprayed with corn. Urea can prevent pests and diseases, and if the corn grows weakly, it is more likely to have pests and diseases. Therefore, adding urea when spraying pesticides can prevent and control pests and diseases while also supplementing nitrogen nutrients.

Urea, also known as carbaamide, is an organic compound composed of carbon, nitrogen, oxygen, and hydrogen, which is a white crystal. One of the simplest organic compounds, it is the main nitrogen-containing end product of protein metabolism in mammals and some fish. It is also the nitrogen fertilizer with the highest nitrogen content at present.

Urea spraying is not recommended. Why? Because urea is volatile, if you spray it, corn can't absorb it effectively in the first place. In addition, if the concentration is too high, it is easy to burn the corn leaves. The best thing to do is to put it in the roots of the corn and let the soil absorb it.

Urea can be sprayed on corn to control pests and diseases while also replenishing nitrogen nutrients.

Yes, fertilization and spraying do not conflict.

It is okay to apply herbicides immediately after fertilization in the corn field, because the bile herbicide and fertilization have nothing to do with it.

This is okay, generally corn is fertilized and watered after the herbicide, the closed herbicide is watered, after the seedling to the corn to grow to the first few leaves, which has nothing to do with fertilization.

The use of herbicides and fertilizers is a very important part of agricultural production. Herbicides are mainly used to kill or inhibit the growth of weeds to reduce competition for crops and improve the yield and quality of crops. Fertilizers, on the other hand, provide nutrients to crops and promote their growth and development.

After the corn is finished with herbicides, can it be fertilized?

The answer is yes. After the corn has been sprayed with herbicides, top dressing operations can be carried out. However, there are a few things to keep in mind when topdressing:

Choose the right time: After the corn has finished applying the herbicide, you need to wait for the herbicide to decompose in the soil and reduce the residual impact on the crop. Typically, top dressing can be done 7-10 days after herbicide application.

Choose the right fertilizer: When topdressing, you should choose a fertilizer that is suitable for the growth needs of corn. Usually, corn needs a lot of nitrogen, phosphorus, potassium and other elements during the growth process.

Therefore, when topdressing, you can choose nitrogen, phosphorus, potassium compound fertilizer or elemental fertilizer, such as urea, potassium dihydrogen phosphate, etc.

Reasonable amount of fertilizer: When topdressing, the amount of topdressing should be reasonably determined according to the growth demand of corn, soil fertility and previous fertilization. Too much or too little fertilizer can affect the growth and development of corn.

Usually, the amount of nitrogen fertilizer used in top dressing of corn is 15-20 kg per mu, the amount of phosphate fertilizer is 5-10 kg per mu, and the amount of potassium fertilizer is 5-10 kg per mu.

Fertilization method: When topdressing, topdressing, hole application, water and fertilizer integration and other methods can be used. Top dressing is to spread fertilizer evenly between the corn rows and then cover it with soil; Hole application is to dig a small pit next to the corn plant, put fertilizer in, and then cover it with soil; The integration of water and fertilizer is to dissolve the fertilizer in water and apply fertilizer through the irrigation system.

Different fertilization methods have different advantages and disadvantages, which need to be selected according to the actual situation.

In summary, after the corn has been sprayed with herbicides, top dressing operations can be carried out to supplement the nutrients needed for crop growth. However, when topdressing, it is necessary to pay attention to choosing the right time, fertilizer, fertilizer amount and method to ensure the growth and yield of corn.

When is it better to use herbicides on corn, some people will say that it is better to play before seedlings, and some people will say that it is better to fight after seedlings, is it better to fight well before seedlings or after seedlings? Don't argue anymore, because these two have their own advantages, as well as pros and cons, and should be treated specifically, so I will talk about the difference between the two, as well as the pros and cons of the two, and you will know the answer after reading it.

Pros and cons of corn herbicides pre-emergence and post-emergence.

Pre-emergence herbicides: Because pre-emergence herbicides are used before corn emerges, they will basically not cause pesticide damage to corn. Moreover, pre-seedling blocking drugs mostly use amide acetochlor, refined metolachlor, etc., which have a good control effect on a variety of annual grasses and some small-seeded broad-leaved weeds.

Disadvantages of pre-emergence herbicides: Although pre-emergence herbicides will not have much impact on corn, they have certain requirements for weather and moisture, such as drought and lack of water, poor soil moisture, etc., spraying herbicides will lead to volatilization or poor absorption, thereby affecting the weeding effect.

Benefits of post-emergence herbicides: Post-emergence herbicides are relatively less affected by weather factors. Post-seedling weeding can be effective as long as the best control period is seized.

The best post-seedling weeding period should be carried out at the 3 5 leaf stage of corn seedlings, because the weeds at this time have just emerged, and it is a good time to control them. Remember, weeding after seedlings should not be too late, too late weeds gradually grow, and it is more troublesome to control.

Disadvantages of post-emergence herbicides: post-emergence weeding requires improper use of pesticides and produces pesticide damage. In particular, nicosulfuron and mesotrione are easy to cause pesticide damage, while oxazolone and oxazolflufludone are relatively safe, but the cost is relatively high.

The above is the pros and cons of corn herbicides before and after seedlings. Of course, due to various factors, sometimes the pre-seedling closure is not well prevented, resulting in weeds in the field in the later stage, so it is also feasible to use post-emergence herbicides for control before the 5 leaves of corn. However, here to remind everyone that in some areas due to drought and low temperature, corn growth will be relatively slow, which also makes the weeds grow unevenly, and the control effect will not be ideal, and even when preparing for control, some corn has exceeded the best control period of 5 leaves, at this time it is best not to use nicosulfuron, so as not to produce pesticide damage, so weeding must be mastered in the control period, too early and too late are easy to cause pesticide damage.

To put it simply, herbicides can be planted before and after seedlings, after all, the planting methods and times are different in different places, so which one is good cannot be generalized, there are pros and cons. However, I personally think that pre-emergence weeding is better, because post-emergence will cause pesticide damage due to improper use of pesticides, not to mention that pre-emergence herbicides are the earliest on the market, and post-emergence herbicides are only said to be promoted for a few years.

Herbicides can be applied before corn seedlings.

But almost no one uses spraying to fertilize.

Urea is a nitrogen fertilizer, but it has no insecticidal effect.

Urea is root fertilization, no one uses the method of spraying fertilizer, the reason is that a foliar absorption is very poor, and the amount must be small, can not meet the needs of corn.

Another reason is very inconvenient, it is very inconvenient to spray a pound of urea with 40 pounds of water, it is better to take a pound of urea and apply it directly to the corn roots.

Urea can be sprayed corn, ground urea can prevent pests and diseases, if the corn growth is relatively weak, more prone to pests and diseases, when spraying urea can prevent pests and diseases, can also supplement nutrients, urea is composed of carbon, nitrogen, oxygen and hydrogen organic compounds, is the main nitrogen-containing product of protein metabolism and decomposition in mammals and some fish, is a good fertilizer.

OK. "Yes, if urea is sprayed on corn, it can be used with potassium dihydrogen phosphate, potassium dihydrogen phosphate + urea, which can promote the rapid growth and development of corn, which is conducive to increasing the fullness of corn grains, improving yield, increasing disease resistance, and also greatly improving the speed of corn cob. ”

Urea should not be sprayed. If urea gets on the leaves of the plant, it will burn the leaves of the plant. Generally, if corn fertilizes urea, urea is put into the roots of corn, and it cannot be too close to the roots, but must have a certain distance. Then wait for it to dissolve into the soil and absorb it slowly.

I can spray し on corn. But you have to match proportionally. No. Multipurpose. If there is more, it will burn corn and coconut. So. Have to. Use the proportional number well. Otherwise, the consequences will be serious.

Of course, you can spray corn.

Summary. Urea can be applied when planting corn. In the practice of applying urea with water in the corn field, the amount of water is controlled, generally the urea is dissolved first, which will be in an iron bucket, and then while watering, take a water ladle to "mix and water" the "urea water" into it.

2. Urea is very soluble in water, and its dissolution is also very good, and the solution dissolved in water is also called a neutral solution. In this way, urea can basically adapt to any soil properties, and urea is called a multi-functional fertilizer in the folk, and the base fertilizer is mainly farmhouse fertilizer, supplemented by carbon ammonia. The first top dressing is mainly urea.

Urea has a high proportion of nitrogen content, is cheap, and is one of the fertilizers that farmers like very much, especially for top dressing corn, and the effect is obvious at the seedling stage.

Can urea be applied to corn seeding?

Urea can be applied when planting corn. In the practice of flushing urea with water in the corn field, the amount of water is controlled, generally the urea is dissolved first, which will be in an iron bucket, and then while watering, take a water scoop to "mix and water" the "urea water bridge Zheng" into it. 2. Urea is very soluble in water, and its dissolution is also very good, and the solution after dissolving in water is also called neutral solution.

In this way, urea can basically adapt to any soil properties, and urea is called multi-functional fertilizer in the folk, and the bottom fertilizer is mainly farmhouse fertilizer, supplemented by carbon ammonia. The first top dressing is mainly urea. Urea has a high proportion of nitrogen content, is cheap, and is one of the fertilizers that farmers like very much, especially for top dressing corn, and the effect is obvious at the seedling stage.

I asked if the urea sprinkled on the bottom of the corn and the corn didn't come out was the reason for the urea.

Is it too high.

Is the concentration the same as in previous years?

I don't know if he sprinkles urea every year I'm just sprinkling urea on people this year It's someone who asked me to sprinkle it with the wild I don't know if it's high concentration or what, anyway, the chaos faction is corn out of a special congratulations.

The main thing he is with urea.

If the concentration of the rent bucket is not well controlled, the fibrous nucleus may result. But it can also be related to other factors, such as the seed itself, or the temperature and land.

If Wu Jiaming accidentally uses too much fertilizer, he should take remedial measures as soon as possible, and the quickest and most troublesome way to absorb the leakage is to water, using water to dilute the concentration of fertilizer.

The temperature is also high for a few days, and the bottom is also frozen.

Winter Water Land. I'll just ask if the main thing is the speed of peeing.

If the concentration is high, it is possible.

The temperature shouldn't have much of an effect.