Is it harmful to corn when herbicide is applied to corn field?

No, but some of it will remain in the soil, and there is a lot of nitrogen, phosphorus and potassium left over from corn fertilization.

It is fixed in the soil and adds residual herbicide.

Pesticide damage will make it difficult for corn roots to absorb nutrients and nutrients, and microbial agents and amino acids containing 2 billion bacteria can be used.

Foliar fertilizer to relieve pesticide damage and soil stress.

Corn-based fertilizer is mainly farmhouse fertilizer, which is mainly made of livestock and poultry manure through fermentation and decay, which is rich in microorganisms, has the characteristics of long fertilizer efficiency and sufficient nutrients, and has an obvious effect on the improvement of soil physical and chemical properties. 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.

Seedling fertilizer is generally applied when the plant grows to 3-4 leaves after emergence. With the rapid growth of plants, the amount of fertilizer required is increasing, and the seedling fertilizer should follow the principle of early application and light application. When the corn enters the jointing stage, the temperature gradually rises.

During this period, the rhizomes and leaves of the plant are in a period of vigorous growth, and the development of the reproductive organs of the rhizomes and leaves requires a lot of nutrients.

At this time, it is necessary to fertilize skillfully, and grasp the amount of fertilizer and fertilization time to avoid the crazy growth of corn, which can play a role in strengthening the stalk and promoting the ear, and reduce the occurrence of empty stalks, baldness and lodging of corn. When the corn grows to 6-7 leaves, it is necessary to fertilize, and organic fertilizer can be applied per mu or strip with Yanwo high nitrogen water-soluble fertilizer. It should be noted that the amount of fertilizer can not be increased at will, which is easy to cause excessive vegetative growth, thereby affecting the reproductive growth of corn.

Reasonable and appropriate use of pesticides, no harm to corn when applying herbicides in corn fields. Improper use of post-emergence herbicides in corn can be somewhat harmful. Rational and scientific application of herbicides will not cause harm to corn.

Herbicides in corn fields are not harmful to corn and will not affect the yield and growth of corn.

If there is no harm, don't worry, because the herbicide only targets the grass. In fact, it does not have much impact on corn, so there is no need to worry about herbicide in corn fields. It's very safe.

The special herbicide will remove the crops of the corn passing department, so when the herbicide is applied in the corn field, there is no harm to the corn with this professional herbicide.

No matter what the place is, when the herbicide is applied, it will definitely have an effect, and if you are not careful, the corn seedlings will be knocked out together.

Corn herbicides.

It has a promoting or inhibiting effect on the growth of corn. Only the rational and scientific use of herbicides can achieve the ideal weeding effect, otherwise pesticide harm may occur and inhibit the growth of corn. The normal use of herbicides will not affect the soil, and only when the improper use of residual concentrations is too high will it cause problems such as soil pollution, soil quality degradation, etc.

The normal use of herbicides generally does not affect the soil, and the most commonly used herbicides are generally the following: amide herbicides, triazine herbicides, phenoxycarboxylic acid herbicides, sulfonylurea herbicides.

The use of herbicides can reduce the amount of pesticide residues and reduce the adverse impact on the ecological environment, while the use of herbicides can reduce the pollution to the environment and reduce the harm to crops. The use of herbicides is generally unlikely to have no effect on the growth of corn, but there are some things to pay attention to in corn fields that use herbicides. The type of herbicide should be determined according to the type of corn when using herbicides, and the general types of herbicides are less harmful to corn, but the types of herbicides should be determined according to the specific conditions of the corn field when selecting.

When using herbicides, herbicides should be selected with good weeding effect, so that farmers can effectively reduce the occurrence of corn field pests and diseases when using herbicides, reduce the harm to crops, herbicide concentration should be determined according to the actual situation of corn field, and the herbicide with the following general concentration will not cause pesticide damage when used, but the weeding effect may not be good when the concentration is too high.

Different herbicides are used in different ways, so consider the range of adaptation when using herbicides to avoid unnecessary waste. If the purpose of using herbicides is to control the growth of weeds, then the herbicide should be mixed with the soil. If the goal is to control the spread of weeds, then the herbicide should be well mixed with the soil to ensure that the mixed herbicide is fully effective.

It can affect the growth of maize, and it can affect the yield of maize, and there will also be widespread deaths, replanting will be required, and it will affect the soil.

There will be a certain impact, which may affect its growth, but this effect is relatively small, and the herbicides used now are relatively safe, so it can be used with confidence in general.

Excessive application of herbicides can cause pesticide damage to corn. There are effects, both pesticide damage and soil residues.

Too much herbicide can cause pesticide damage to corn and lead to reduced yields.

Excessive application of herbicides can be harmful to corn.

Excessive use of herbicides can be critical to corn.

Too many herbicides can cause pesticide damage to corn roots, and will also increase soil residues, resulting in reduced corn yields and soil damage.

How to manage corn seedlings?

1. Seedlings and seedlings.

Seedlings, seedling work is generally carried out in the 3 4 leaf stage, because the corn is in the "weaning period" around the 3 leaf stage, there should be good light conditions, if the seedling stage of the plant is overcrowded, the root system between the plants is staggered, there will be a phenomenon of competing for water and fertilizer. The yield of summer maize in the 5 9 leaf stage is 14 27 per mu compared with the 3 4 leaf stage, so the seedling thinning and seedling determination work should be carried out as soon as possible.

2. Cultivating and weeding.

Corn seedling tillage can generally be carried out 2 3 times. Before the seedlings are short, the seedlings can be cultivated for the first time, and the seedlings should be avoided during the cultivation. The depth of cultivation should be 3 5 cm, the seedlings should be shallow, and the rows should be deep.

Although the cultivation will cut off some fine roots, it can promote the growth of new roots and control the vigorous growth of the aboveground parts.

3. Squatting seedlings to promote growth.

Squatting seedlings should start from the seedling stage to the end before jointing. Squatting seedlings should master the principle of "squatting black but not squatting, squatting fat but not squatting thin, squatting dry and not squatting wet". The sowing and growth conditions of interplanting corn are poor, and it is generally not suitable for squatting seedlings. We should do a good job in water and fertilizer management and promote the transformation of the weak into strong.

4. Pest control.

There are many types of pests in the seedling stage of maize, especially summer maize. At present, the main pests that harm corn at the seedling stage are ground tigers, aphids, thrips, cotton bollworms, lamp moths, wheat straw flies, etc., and the insect situation should be detected and reported in a timely manner, and the pests should be prevented and controlled in time.

If you use too much herbicide, it will definitely have an impact on corn or other food crops, your herbicide power, it will stay in the soil, and you will lose weight if you plant any plant in the next crop, the effect of this herbicide. If the next plant is similar to the one your herbicide kills, it can lead to death.

Corn herbicides are divided into pre-seedling herbicides and post-seedling herbicides, post-seedling herbicides should be sprayed according to the ratio of instructions, generally sprayed when corn seedlings are three to four leaves, spraying should be even, there is no major harm to corn.

I see that the seeds sown before are waiting for sowing, and you can weed them, so that there is no danger to the life of the corn, and if you weed the corn seedlings after they grow, it is life-threatening for the corn seedlings.

Corn post-emergence herbicides, only the use of special corn post-emergence herbicides, has no effect on corn seedlings. Remember, it must be a corn-specific post-emergence herbicide

There is water in the corn field and there is no effect on the herbicide in two situations. One is that there is only water on the corn ground, and herbicides have no effect on corn. The second is that there is water in the corn cob (that is, the growth point) will have an impact, but the problem is not big, so you don't need to deal with it!

When there is water in the corn field for herbicide, will the corn be affected? What happens if I am affected? After being affected, you can buy an antidote and get rid of it.

This problem, I believe many friends have encountered, the premise is that we all know that the best time to use corn herbicide is when there are 3-5 leaves, if there is a safety agent, it can be appropriately delayed to 7-8 leaves, and weeds are basically growing with corn, the more corn leaves, the bigger the weeds, so for this problem, the little helper has the following 3 views:

1. Look at the proportion of blades.

If the corn of an acre of land, 70-80% are in 3-5 leaves, only 10-20% or less than the proportion in 1-2 leaves, then at this time, you can play herbicides, mainly in the field, in this way, weeds should not be difficult to control, the effect is relatively good, when spraying, go to the area of replanting, try to avoid corn, directional to weed spray.

2. Look at the proportion of replanting.

According to the proportion of replanting in the field, if the proportion of the second replanting is small, below 20%, and then the first time the corn is sown to about 5 leaves, you can play herbicides, and the first point is about the same, but also the majority, if you wait until the replanting grows to about 5 leaves, weeds are also difficult to control, the resistance is larger, in addition, the more corn is later, the more sensitive to herbicides, so it should not be too late.

3. Appropriate delay.

Some friends will have such worries, if the herbicide is played early, I am afraid that the corn seedlings that have just come out will be harmed, if the late hit, the weed resistance is large, and it is not easy to control, so this situation, you can compromise, you can play a few days late, because the corn seedling period is very fast, and so on the first sowing to grow to about 7 leaves, the second replanting, also grew to about 3 leaves, at this time, and then the herbicide can also be used, but it should be noted that it is necessary to choose a post-emergence herbicide containing a safety agent, such as none, then directional spraying.

About the problem, the little helper will say so much first, to sum up, this question is to be analyzed according to the specific situation, and there is no absolute answer, I hope this content can bring you some help, if you have other questions, you can leave a message in the comments below, and you will reply after seeing it.

There will be no harm because the herbicide will only be harmful to the weeds, not to the corn.

It is indeed harmful to corn and has a constant impact on the future operation of the farmland.

It will not cause some damage to corn, because the corn seedlings will be avoided when the herbicide is applied, so it will not cause any harm to the plant.

Improper use of herbicides can cause damage to corn.

The main weed species that damage corn are barnyard barnyard grass, dogtail grass, cow tendon grass, horsetail, dogtooth root, knotweed, xanthium, spiny cabbage, endive, duck plantar grass, plantain and so on. The traditional method of weeding maize is tillage, but the effect of tillage weeding is susceptible to climate influences. The most commonly used method of weed control is the spraying of chemical herbicides, which can kill or control the growth and spread of weeds more quickly and effectively, and significantly reduce the amount of labor.

Chemical herbicides for maize are divided into two categories: pre-emergence herbicides and post-emergence herbicides. Pre-budding herbicides, that is, spraying closed soil after corn sowing and before emergence, such as field supplement, Henes Alatzin, etc. Post-emergence herbicides, that is, spraying weeds at the 3 5 leaf stage after corn emergence, such as nicosulfuron, metrioxone, etc.

Before spraying herbicides, you must read the instructions carefully and operate in strict accordance with the instructions, so as not to cause harm to people, livestock, corn seedlings or crops. It is necessary to choose corn herbicide varieties with a wide herbicidal spectrum, moderate effective period, and no impact on subsequent crops. The soil treatment before seedlings was the main treatment, supplemented by stem and leaf treatment after seedlings.

The growth status, environmental conditions and weed species in the field were investigated in detail, the dominant population was determined, and the herbicide varieties were selected in a targeted manner. Choose to apply pesticides in sunny and windless weather, no leakage spray, no respraying. The best time to use herbicides in corn fields should be carried out before the emergence of corn or before the 3 5 leaf stage of monocotyledonous weeds after emergence, and the dosage is strictly implemented in the instructions.

What are the symptoms of corn herbicide damage? How can it be prevented?

The symptoms of corn herbicide damage are: the leaves are shrunken, leaf-like, and the petioles of the stalks are bent. Dwarf deformity, curly heart lobes. The roots are short and thick, and the seedlings are not born severely. The veins of the leaves lose their green, the margins of the leaves turn yellow and die. The leaves burn, die, fall off.

The control methods and remedies are: according to the type of crop and the control object, select the appropriate herbicide, and choose the herbicide must be produced by the regular manufacturer. Strictly control the dosage and time of medication, and prohibit medication on windy days and hot noon.

Medicinal instruments should be thoroughly cleaned, and herbicides and insecticides should not be mixed. After the pesticide damage occurs, a large amount of water should be sprayed, and at the same time, field management should be strengthened, phosphorus and potassium fertilizers should be increased, and fast-acting fertilizers such as urea should be sprayed to enhance the growth vitality of corn.

Summary. Dear, hello, the corn is high and the herbicide is not harmful, and the corn field can be sprayed with herbicide twice. The first spraying of herbicides, you can choose to close the herbicide evenly sprayed, most of them will choose to use 72% metolachlor, 90% acetochlor, etc., corn post-emergence herbicides, generally sprayed in the seedling stage of corn 2 5 leaves, the damage to corn seedlings is very small, because corn in the 2 5 leaf stage, is the strongest herbicide resistance period, not easy to be damaged by spraying herbicides, commonly used mesotrione + nicosulfuron, compound spraying, can prevent and control corn field grass weeds, and annual broad-leaved weeds, Spraying weeds when they are two leaves and one heart to four leaves can improve the effect of weeding.

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Dear, hello, the corn is high and the herbicide is not harmful, and the corn field can be sprayed with herbicide twice. The first spraying of herbicides, you can choose to close the herbicide evenly spraying, most of them will choose to use 72% metolachlor, 90% ethyl grass contains amine deficiency and so on, corn post-emergence herbicides, generally sprayed in the seedling stage of corn 2 5 leaves, the damage to corn seedlings is very small, because corn in the 2 5 leaf stage, is the strongest herbicide resistance period, not easy to be damaged by spraying herbicides, commonly used mesotrione + nicosulfuron, compound spraying, can prevent and remove corn field grass weeds, and a matching posture of annual broad-leaved weeds, Spraying weeds when they are two leaves and one heart to four leaves can improve the effect of weeding.