After applying wheat herbicide, the grass is not dead, do I need to shoot it a second time?

As for the wheat herbicide was sprayed.

In recent days, the little helper has received a lot of messages from friends, which can be divided into two situations. I applied herbicide a year ago, and the effect was okay, but after a year, new weeds grew, do I need to fight again? After the year, I played herbicide, and after half a month, the grass still didn't die, looking at the weeds all over the ground, I asked if I could hit it a second time?

The two cases mentioned above are estimated to have been encountered by many friends, so I would like to express my views on this issue.

First of all, I personally suggest that the wheat herbicide cannot be played a second time (don't refute it if you don't agree, look down), the herbicide is played, the weeds are not dead, first analyze the reasons, nothing more than the following: herbicide fake; The period, temperature, humidity and method of spraying are incorrect; The dosage is out of control. Basically, it's these 3 points, some friends said again, I don't meet these 3 points, because the weeds died, but then they grew again, what should I do?

There are two situations: one is that there are not many new weeds, and they are much smaller than wheat seedlings, which will not affect the normal growth of wheat. In this case, there is no need to use herbicides, and it will not affect the yield of wheat, so no one knows how to ensure that there is no grass in the field, right?

The new weeds are numerous and vigorous, some even exceeding the height of wheat. At this time, if you want to apply herbicides again, it is not impossible, but you must buy whole field spraying, wear a mask when applying pesticides, the nozzle should be low, and the liquid medicine should mainly fight weeds. In addition to the newly grown weeds mentioned above, what if the herbicide grass does not die?

It also depends on the degree of poisoning of the grass, if it looks not dead, but the roots have rotted, it has little impact on the wheat, you can ignore it, if you hit it, the effect is not obvious, as mentioned above, you have to hit it a second time, wear a mask, press down the nozzle, and the liquid is mainly on the weeds. In conclusion, it is important to understand the specific causes of weed deaths.

In addition to the impact of rainfall on spraying, do not re-spray the same type of herbicide, and pay attention to the interval of about 7 days, add enough water, use enough medicine, catch the cold tail and warm the head, and avoid bad weather.

Unified spraying in the field, no fertilization and watering in the short term after treatment, will affect the prevention and control effect of field management measures, at the same time, choose reliable quality pesticides when spraying, do not increase the dosage at will, and ensure that the spraying control before wheat jointing has no impact on wheat.

I don't think it is necessary, there are some other methods to achieve the effect of weeding, if the pesticide is sprayed a second time at this time, it may lead to a change in the growth trend of the wheat, affect the survival rate of the wheat, and affect the harvest.

No, it means that the effect of the herbicide is not good, or the spraying time is incorrect, it is not recommended to hit the second time, otherwise it will cause wheat diseases.

Yes, this can effectively control weeds, allow plants to grow better, and avoid weeds from absorbing nutrients.

When the ground is dry, you can apply herbicides!

First, on the issue of herbicide and watering, if there are no special circumstances, it is recommended that you water first and then apply herbicide, if there are really special circumstances, it is recommended to finish the herbicide, at least wait until 1 day before watering.

Second, since the choice of watering, you can basically judge that there is a drought in the field, and watering first, and then herbicide, there are two main benefits (a few days in the middle, because after watering, the field is too wet, can not go down to work, after a few days of drying, wait for the field to go down and then spray herbicides).

After a week of watering the wheat, when the ground is not sticky to the feet, you can apply herbicide.

Wheat field agents are used in two peak periods, one is from mid-November to the end of December before the year. The second is from the end of February to the end of March after the new year. However, wheat field herbicides are still the best before winter, grass age is small and easy to eliminate, after the application of pesticides, one is that the grass is difficult to remove, the other is the amount of medicine, the effect can not reach the effect of the previous use, and it is easy to cause herbicide residues, so it is recommended to use the herbicide before the year, and the wheat field herbicide can be used at a temperature of 8-10 degrees.

Wheat weeds have always had a great impact on the growth of wheat, and it is difficult to remove weeds in wheat fields and grow fast, so spraying herbicides must be selected at the right time. Let me introduce it to you.

Wheat herbicide application time: the application period is the early stage of wheat tillering before winter and wheat jointing in the second year. The effect of drug control at these two times is better, and it is relatively safe for wheat, and the effect is poor if it is late, among them, the earlier the 2,4-d butyl ester is used, and besulfuron is used before getting up after the wheat returns to green, so as not to cause pesticide damage to the next crop.

To apply herbicides to wheat, it is necessary not only to master the time, but also to master the temperature and humidity when using herbicides: the average temperature when using herbicides should be above 6, which will achieve very good control results. For example, besulfuron is sensitive to temperature, and the prevention and control effect can only be shown after 15-20 days or even 30 days after the drug under low temperature conditions.

In addition, herbicides should be used on sunny days and slightly higher temperatures, generally from 10 a.m. to 3 p.m. In case of dry soil, herbicide application should be increased to ensure the control effect.

Summary. According to the results of the inquiry, the general interval is about three to five days, corn fields have been sprayed with organophosphorus or carbamate pesticides need to be separated by 7 days before herbicides can be used, and wheat fields have been sprayed with such pesticides at least 3-5 days before herbicides can be used. Otherwise, it is easy to cause wheat to turn yellow and burn leaves, because organophosphorus pesticides reduce the ability of wheat to reduce herbicides, and the subsequent use of herbicides is easy to lead to pesticide damage.

As a result, it was. According to the results of the inquiry, the general interval is about three to five days, corn fields have been sprayed with organophosphorus or carbamate pesticides need to be separated by 7 days before herbicides can be used, and wheat fields have been sprayed with such pesticides at least 3-5 days before herbicides can be used. Otherwise, it is easy to cause wheat to turn yellow and burn leaves, because the organophosphorus pesticides reduce the ability of wheat or split rent to remove herbicides, and then the use of herbicides is easy to lead to pesticide damage. As a result, it was.

Herbicide can be applied twice in a wheat season, but this is not recommended.

What should be paid attention to when burying the first finger with the second time 1. Buy a herbicide with a safety agent, because the second herbicide has missed the use period, and if you are not careful, the wheat will be harmed. 2. When hitting the second time, do not spray in the whole field, you can spray the weeds in the middle of the wheat row spacing, bring a mask, press down the nozzle, and hit the liquid mainly on the weeds. Do not apply herbicides in windy weather.

3. Remind an important bending point, no matter whether the grass is dead or not, and how many weeds there are, after the wheat reaches the jointing stage, don't use the herbicide in the mountain.

Summary. Hello dear Your question is answered as follows: Yes, you can apply the wheat herbicide again, but you can consider switching to a more effective herbicide so that you can better serve your purpose.

Ensure proper use of herbicides to prevent harm to the environment. Before using the herbicide, the instructions on the label should first be read and then the weeding operation should be carried out by following the steps indicated. When using herbicides, avoid being near people and livestock, and make sure not to spill herbicides on food.

Clean the tool in a timely manner after use, and dispose of the remaining herbicide and waste properly. Hope mine can help you! Have a great day!

The wheat herbicide has not died for ten days, can it be beaten again.

Hello dear Your question is answered as follows: Yes, you can apply the wheat herbicide again, but you can consider switching to a more effective herbicide so that you can better serve your purpose. Ensure proper detection of state use of masking herbicides to prevent harm to the environment.

Before using the herbicide, the instructions on the label should first be read and then the weeding operation should be carried out by following the steps indicated. When using herbicides, avoid being near people and livestock, and make sure not to spill herbicides on food. After use, the tools should be cleaned in time, and the remaining herbicides and waste should be properly disposed of.

Hope mine can help you! Have a great day! 

The wheat herbicide has been beaten for ten days, and the grass has not died, can it be beaten again.

You can fight again. You can apply the wheat herbicide again, but you can consider switching to a more effective herbicide so that it can better serve your purpose.

OK. However, it is recommended that you fertilize the wheat before you do it again to increase the efficacy and safety of the herb resistance. In addition, it is also possible to consider switching to a less toxic and more effective herbicide to reduce the impact on the environment.

Is it okay not to use the same herbicide? It won't be harmful to wheat.

Can herbicides be played together with disease prevention drugs?

If there are other crops nearby, it is recommended not to use the same herbicide as the clan.

No, herbicide is an insecticide, it can only kill sensitive pests, while disease prevention is a defeat drug to prevent disease, it can help plants resist the disease, but it cannot kill the pests.

Summary. Herbicides must be used in strict accordance with the regulations, to avoid excessive use, some farmers will spray a few times in the thick place of the grass when playing herbicides, or afraid of wasting the last remaining herbicides to hit the last plot, this practice is easy to lead to herbicide damage, because herbicides are safe for wheat at normal concentrations, but if excessive use, wheat itself can not be decomposed, it will cause harm to wheat.

Wheat herbicide 5 times at a time, is it a one-time pass, is it okay?

Herbicides must be used in strict accordance with the regulations, to avoid excessive use, some farmers will spray a few times in the thick of the grass when playing herbicides, or afraid of wasting the last remaining herbicides to hit the last plot, this practice is easy to lead to herbicide damage, because herbicides are safe for wheat at normal use concentrations, but if the use of excessive amounts of wheat, wheat itself can not be decomposed, it will cause spring chain damage to wheat.

Generally speaking, it cannot be sprayed repeatedly, otherwise it will cause pesticide damage. Wheat herbicides should not be sprayed repeatedly during the residual period.

The herbicide should not be re-applied after a few hours.

It must be used at full intervals according to the instructions for safe and dismantled tours.

The crop is cultivated by technology.

The crop grows well on both acidic and slightly alkaline soils, but the most suitable soil pH is to.

Farming and land preparation.

The land preparation of the crop in the dry land should be based on the deep tillage layer year by year, combined with the application of organic fertilizer, and the improvement of water and fertilizer conservation, and the land preparation should be carried out according to different multiple cropping forms. That is, the previous crop harvested earlier, such as spring corn, sorghum, tobacco, etc., the harvest should first be shallow tillage to eliminate stubble, and then deep ploughing of the kang soil, so that the stubble rots and accept the autumn rain, shallow rake after the rain, reduce evaporation; The other category, such as sweet potato, cotton, etc., has a tight harvest time, and if the conventional method is used, it is bound to delay the sowing date, which is one of the important reasons for the low yield of the crop in the southwest region. Therefore, on the one hand, the implementation of loosening soil and moisture between the rows in the previous crop and later period, and then plowing and leveling when planting wheat; On the other hand, it is advocated to dig potatoes, level the ground, fertilize, sow and other continuous operations to ensure that the crop is sown in a timely manner.

High-yield technology. 1. Pay attention to the selection of high-fertilizer and water plots. High-yield and high-quality crop varieties require that soil nutrients must be comprehensive and sufficient, in order to meet the needs of high-yield cultivation, so it is advisable to choose plots with high soil fertility and good watering conditions.

2. Pay attention to late sowing at the appropriate time, and determine the appropriate basic seedlings according to the characteristics of the variety. It is necessary to prevent excessive sowing volume, resulting in passive post-management.

3. Pay attention to prevent lodging and reapply jointing fertilizer. Some of the high-quality crop varieties promoted are not resistant to lodging, especially for wheat fields with too large groups, a chemical control treatment must be carried out before returning to jointing, and paclobutrazol or wheat yefeng can be sprayed. It is necessary to reapply jointing fertilizer to control the formation of excess falling ears and promote large ears and more grains.

4. Pay attention to watering grouting water, wheat yellow water, and spraying foliar fertilizer to prevent premature aging. Watering grouting water plays an important role in increasing granularity weight and preventing dry and hot air. In dry weather, the use of wheat water is conducive to intercropping and preventing premature aging.

In the first half of May, combined with the prevention and control of pests and diseases, spray 2 to 3 times of foliar fertilizer, such as potassium dihydrogen phosphate, which can reduce the harm of dry and hot air and increase yield.

5. Pay attention to the prevention and control of pests and diseases. Generally speaking, high-quality crops are more susceptible to pests and diseases, such as sheathrody and powdery mildew, and aphids occur earlier and heavier than conventional varieties. It should be prevented and treated as soon as possible according to the forecast.

6. Spray the crop treasure once when the crop has just broken and reached about 60% to 70% before heading and flowering, so as to activate the biological enzyme activity in the crop, promote coordinated growth, enhance the photosynthesis of functional leaves, significantly reduce the empty stubble rate, improve the seed setting rate and 1000-grain weight, so as to achieve the effect of increasing yield.

Wheat herbicide can also be sprayed once.

Wheat herbicides are generally better at the wheat tillering stage and the early stage of wheat jointing before winter.

How to use wheat herbicides:

Temperature

1. Generally, when the average temperature is higher than 6, the control effect of herbicides is better, and benzuron-methyl and other agents are sensitive to temperature, and under low temperature conditions, 15 to 20 days after spraying, or even 1 month later, will have a better control effect. Herbicides need to be used on sunny days and when the temperature is slightly higher, generally at 10 am or 3 pm, if the land is dry, herbicides need to increase water consumption, will have a better control effect.

2, the wheat herbicide should not only master the temperature, but also grasp the time, generally wheat herbicide suitable time is the wheat tillering period before winter, and the early stage of the second year of wheat jointing, these two periods of herbicide control effect is better, the wheat is also safe, if the time is late, the effect will be poor, the "2,4 to d butyl ester" herbicide is played as early as possible, and the use of benzensulfuron is better before getting up after the wheat is changed to green, which can avoid pesticide damage to the next crop.

The use of wheat herbicides is generally carried out when the local average daily temperature is stable above 6, and the spraying effect is best when the temperature is about 10.

Combination recipes

1. For the prevention and control of broad-leaved weeds such as humulus, camellia, Maijiagong, Artemisia annua, ionic grass, etc., 75% besulfuron water-dispersible granules can be used, with a suitable dosage of 1g per mu, or 10% besulfuron wettable powder, with a suitable dosage of 10g per mu.

2. For the prevention and control of Grass grass, 70% fluzosulfuron water dispersible granules can be used, and the appropriate dosage per mu is 3 to 4g.

3. For the prevention and control of bowl flowers, 20% chlorofluoropyroxyacetic acid emulsifiable concentrate can be used, and the appropriate dosage per mu is 50 to 70ml.

4. For the prevention and control of Herbaceae and Mai Niang, 15% alkynyl ester wettable powder can be used, with a suitable dosage of 30 to 40g per mu, or emulsifiable concentrate of 30 to 40ml per mu.

5. For the prevention and control of the mixed growth of finch wheat grass and broad-leaved weeds, 3 to 4g of 70% fluzosulfuron water dispersible granules and 10g of 10% benzensulfuron wettable powder can be used per mu.

6. The above formula needs to be mixed with 60 to 80 kg of water per mu, and it can be sprayed evenly with spraying trucks and hand pressure sprayers.