Can corn herbicides be mixed with pesticides?

1.Corn herbicides can be mixed with pyrethroid insecticides (such as emamectin, benzoate, cypermethrin, etc.). ) and commonly used nicotinoid insecticides (such as imidacloprid, acetamiprid, etc.). , but not mixed with organophosphate insecticides (such as chlorpyrifos, phosphine, dichlorvos, etc.). ).

2.When spraying, avoid the heart leaves of corn to prevent the filling of the liquid medicine. After spraying herbicides, if organophosphorus pesticides are to be used, the interval should be at least about 7 days, otherwise pesticide damage is likely to occur.

Can corn herbicides and pesticides be mixed?

Second, the period of mixed medication.

1.The 3-6 leaf stage of maize seedlings is a suitable period for weeding. At this time, most of the weeds have emerged and are less resistant to herbicides. After application, weeds will fully absorb the pesticide solution, which is conducive to achieving good control effect.

2.The ability of maize seedlings to drop herbicides was weakened before 3 leaves and after 6 leaves. At this time, spraying is prone to pesticide damage. Moreover, the weeds have not come out before the 3rd leaf of the corn seedling, and the weeds will grow after the 6th leaf, so it is difficult to have a good effect even if it is sprayed.

3.The 3-6 leaf stage of corn is also the peak period for corn ash planthoppers, thrips and other pests. At the same time, the grass borer has already harmed maize seedlings in some areas. This is when a mixture of pesticides needs to be sprayed to control planthoppers and grass borers.

4.The spraying time should be after 4 p.m., when the weather is relatively cool, which is conducive to staying on the weeds for a longer time. At the same time, the weeds will fully absorb the liquid after overnight, which can improve the efficacy of the medicine.

Corn herbicides contain nicosulfuron, which cannot be mixed with organophosphate insecticides! Can be mixed with pyrethrin! So don't mix it with organophosphate pesticides!

Nicotinoid herbicides.

And. Organophosphate insecticides.

It cannot be mixed, and the mixing of the two is easy to cause pesticide damage to crops.

Yes. You want to see if the herbicide variety has any harmful effect on the crop.

If you want to use paraquat before seedlings, you don't need pesticides.

<> corn herbicides can be mixed with pyrethroid insecticides and nicotinic insecticides, but not with organophosphorus insecticides. Pyrethroid insecticides include emamectin benzoate, avermectin, etc., nicotinic insecticides include imidacloprid, acetamiprid, etc., and organophosphorus insecticides include chlorpyrifos, phosphine, etc. After spraying herbicides, organophosphate insecticides should be used at least 7 days apart to prevent pesticide damage.

1. Can corn herbicides and insecticides be mixed?

1. Corn herbicides can be mixed with pyrethrin insecticides (such as emamectin benzoate, avermectin, cyhalothrin, etc.), commonly used nicotinic insecticides (such as imidacloprid, acetamiprid, etc.), and cannot be mixed with organophosphorus insecticides (such as chlorpyrifos, phosphine, dichlorvos, etc.).

2. When spraying, avoid the heart leaves of corn to prevent the liquid from being irrigated. After spraying herbicides, if organophosphorus insecticides are to be used, the interval should be at least about 7 days, otherwise pesticide damage is likely to occur.

Second, the period of use of mixed drugs

1. The 3-6 leaf stage of corn seedlings is a suitable period for weeding, at this time most of the weeds have come out, and the resistance to herbicides is still relatively weak, and the weeds will fully absorb the solution after application, which is conducive to achieving a good control effect.

2. The degradation ability of corn seedlings to herbicides before and after 3 leaves and 6 leaves will be weakened, and spraying is prone to pesticide damage at this time. Moreover, the weeds before the 3rd leaf of the corn seedling have not yet come out, and the weeds have grown up after the 6th leaf, so it is difficult to achieve a good effect even if spraying.

3. The 3-6 leaf stage of corn is also the peak period of corn planthopper, thrips and other pests, and at the same time, fall armyworm has also harmed corn seedlings in local areas.

4. The spraying time is appropriate after 4 o'clock in the afternoon, which is relatively cool at this time, which is conducive to the liquid medicine staying on the weeds for a longer time, and the weeds will fully absorb the liquid after a night, which can improve the efficacy.

3. Precautions for mixing drugs

1. The drug should be prepared and used at the ready, and cannot be left overnight.

2. The agents for the control of corn thrips and gray planthoppers include imidacloprid, acetamiprid, thiamethoxam, pymetrozine, flufenamide, etc., which can be mixed with corn herbicides. However, when controlling thrips and gray planthoppers, the heart leaves of corn should be sprayed, and spraying the heart leaves may lead to the pesticide damage caused by the filling of the liquid medicine, so it is recommended to spray separately and try not to mix.

3. Organophosphate insecticides can not be used 7 days before and after spraying post-seedling herbicides, let alone mixed, otherwise the risk of pesticide damage will be greatly increased.

4. Most of the post-emergence herbicides of corn have strong selectivity, and will be decomposed by enzymes in the body after being absorbed by corn, but if the absorption of organophosphorus pesticides (such as chlorpyrifos, phosphine, dichlorvos, malathion, etc.), it will slow down the degradation rate of nicosulfuron in corn, and nicosulfuron will interfere with the normal metabolism of corn, affect the growth of corn, and produce serious pesticide damage.

Corn herbicides and insecticides mixed in recent years corn herbicides and insecticides for the control of Spodoptera exigera has been very common, for this reason, the author has also carried out 3 years of product experiments, proving that atrazine and kung fu mix has a certain control effect, does not affect the herbicide efficacy, and can be mixed with avermectin, chlorantraniliprole, emamectin salt, etc. However, it is recommended to use it alone, and herbicides cannot be mixed with organophosphates, and it is best to spray them directionally. I hope you can do a good experiment first to ensure absolute safety.

Hello! Some corn herbicides can be mixed with insecticides, but there are few types. In particular, organophosphorus insecticides cannot be mixed with corn herbicide letter solution, which will cause pesticide damage to corn. Whether it can be mixed, be sure to shout Tan socks to read the instructions.

Usually no.

Corn is a broad-leaved crop, and wheat is a fine-leaved crop.

The two are not the same type of crop, and there is a difference in the herbicidal spectrum for corn and wheat fields.

Generally speaking, most herbicides in wheat fields are harmful to broadleaf crops.

If it is used before seedlings, it is not a big problem, if it is used after seedlings, it cannot be mixed casually, and the specific herbicide name needs to be provided to a professional agronomist, and the conclusion can only be drawn after evaluation.

Not necessarily, some varieties of corn herbicides and wheat herbicides are the same, if they are the same, they can be mixed, if they are not the same, they can not be mixed, and if they can be mixed, please specify the composition of the herbicide.

Corn herbicides cannot be mixed with wheat herbicides, corn herbicides are for corn weeding, and cannot be used for other crops.

1.Mixed application period: The best time to apply herbicides after corn seedlings is the 2-5 leaf stage of corn, when corn resistance is very high and it is not easy to cause fertilizer damage.

These stages are the peak of grey planthopper and thrips infestation, and in recent years, some locust pests have affected some areas. Therefore, the control of planthopper and locust pests requires a mixture of drugs. The selection of drugs must be with good safety factors, water-soluble preparations, and very high safety performance.

00 Start the sprayer up and down. At this time, after overnight digestion and absorption, the spray will make the liquid stay on the weeds for a longer time, so that the herbicide components can be fully digested and absorbed, thereby improving the experience of using herbicides. At this time, the harm of cooling to corn is very small, and the safety performance is very high.

Yes, even at this time, it is the peak period for pests and diseases such as gray planthoppers, whiteflies, and grass borers to go out. At this time, the actual effect of the sprayer on pest control is quite prominent.

3.Common problems of mixed insecticides: there is no need to spray organophosphate insecticides about 5 days after spraying post-emergence herbicides, and the risk of fertilizer damage is still quite large. At the same time, try to wrap the leaves around the heart to prevent the adverse effects of cardiac infusion.

4.Introduction of mixed insecticide varieties: When mixing corn post-emergence herbicides and insecticides, insecticides with weak purpose must be selected.

The focus is on the control of corn borer and grass borer. The main products are emamectin, benzoate, avermectin, cypermethrin, lice urea, chlorantraniliprole and other insecticides. This device can be used with post-emergence herbicides, so it must be mixed now, and the prepared drugs do not need to be left overnight.

Note that corn herbicides should not be mixed with untested fertilizers such as organophosphates. Preparations for the control of rice whitefly and planthopper include acetamiprid, acetamiprid, thiamethoxam, pymetrozine, cyfluthrin and other drugs. This medicine can also be mixed with corn herbicides, and the safety factor is no problem before mixing.

However, in the case of rice whitefly and gray planthopper, the heart leaves of corn need to be sprayed, which may cause fat damage. It is advisable to separate the medications and try not to mix them.

No, phosphine is highly toxic and has a long residual effect period, which will seriously endanger human health and even cause current poisoning. The Ministry of Agriculture has long banned its use on crops.