Can I still transplant rice in a corn field with a closed herbicide? How long does it take to plant

The corn field was covered with a closed herbicide and could not be planted immediately.

The time when the seedlings can be planted depends on the specific herbicide time.

If atrazine is used, it will take more than 24 months.

Atrazine herbicide can control a variety of annual grasses and broadleaf weeds. It is suitable for the control of horsetail, barnyard grass, dogtail grass, sedge, kanmai niang, knotweed, quinoa, leguminous weeds and leguminous weeds of corn, sorghum, sugarcane, fruit trees, nurseries, woodlands and other dryland crops.

How to use:1The use of corn field summer corn is used before emergence after sowing, and the soil organic matter quality is 1% to 2% in North China, Shandong and other places, 150 to 200 grams of 50% wettable powder per mu, or 175 to 200 ml of 40% suspension agent; In the Northeast region where the soil organic matter content is greater than 3% to 6%, 200 to 250 grams of 50% wettable powder or 200 to 250 grams of 40% suspension agent per mu, the lower limit for sandy soil and the upper limit for clay soil.

1 to 3 days after sowing, spray the soil surface evenly on 30 kg of water. After the emergence of corn, the appropriate period is the 4-leaf stage of corn and the 2-3-leaf stage of weeds; For sandy soils with low organic matter content, use 200 to 250 grams of 50% wettable powder or 40% suspension agent per mu. Spray on 30 to 50 kg of water.

Spring corn per mu with 40% suspension agent 200 to 250 ml, add 30 to 50 kg of water, spray the soil surface before seedlings after sowing, mix soil after spring drought medicine, or appropriate amount of irrigation. Or in the 4-leaf stage of corn as stem and leaf treatment. In the continuous cropping area of maize and winter wheat, in order to reduce or eliminate the pesticide damage of atrazine to wheat, atrazine can be used to reduce the amount of atrazine and mix it with herbicides of grass jingjin, lasso, dol, 2,4 to d butyl ester, bannong and green melon.

2.5 to 7 days after the cane is planted, the weeds are partially unearthed, 200 to 250 grams of 50% wettable powder or 40% suspension agent per mu, 30 kg of water is added, and the surface is evenly sprayed.

3.Tea gardens, orchards, vineyards use the peak period of weed germination in the field from April to May, first eradicate the unearthed grass and overwintering miscellaneous lines, and then use 250 to 300 grams of 40% suspension agent per mu, and evenly spray the soil surface with 40 kg of water.

Atrazine is a herbicide for pre-bud soil treatment, and can also be treated with stems and leaves after budding. Drought has a great impact on the efficacy of the medicine, mainly on dicots, focusing on closure, and the effect on grass is not ideal. It also has a certain inhibitory effect on some perennial weeds.

The residue period of atrazine in the soil is generally about 6 months, because its residue period is relatively long, so it needs to wait for a period of time after application to plant the next crop, for cucumbers, it generally takes about 40 months to plant, and tobacco, alfalfa, sugar beet, rape, flax and other crops also need to go through 24 months before planting.

The corn field is closed, and it is not possible to plant seedlings after about a week.

Corn sealing herbicide, dry ground is not suitable for playing, will affect the efficacy.

4 precautions for closed weeding before corn seedlings

1. Pay attention to the weeding time

Blocking herbicides should be sprayed within 7 days after sowing corn after sowing and before most of the weeds emerge.

For example, acetochlor, a tung back amide herbicide, is effective for annual grass weeds that have not yet soiled, and has very poor control effect on weeds that have emerged, and is basically ineffective against older weeds.

Therefore, the sealing herbicide must be sprayed within 7 days after sowing, if the weeds have been unearthed, do not spray the sealing agent, you can wait for the corn 3-5 leaves period, spray the herbicide after the stem and leaf treatment after the seedling.

2. Pay attention to the temperature and soil moisture during weeding

If the weather temperature is too low, it will affect the activity of the herbicide, resulting in poor weeding effect, in principle, the temperature during weeding should not be lower than 15 degrees.

At the same time, there are also requirements for soil moisture, if the soil is too dry, the weeding effect will not be good, if the humidity is too high, it is easy to cause pesticide damage.

3. Pay attention to the dosage used

In principle, it can not be used in excess of the amount, and the excessive use is easy to produce pesticide damage to the corn, and the seedlings will be incomplete and uneven after the pesticide damage, so it will affect the yield of the corn.

Generally, the soil field should be used in accordance with the recommended dosage of the product label (the upper limit of the registered amount of clay, the normal amount of loam, and the severe sandy soil should not be closed for weeding), if it is a plot with high wheat and corn stubble and machine-harvested wheat stubble, the dosage can be increased appropriately.

4. Pay attention to the spraying weather

When the wind reaches level 3 or above, do not spray again, otherwise the medicine mist will be blown away by the wind and reduce the efficacy of the medicine.

Before the rain, it is not suitable to spray in the rain, at this time, the rain will make the medicine infiltrate or lose with the surface water, affecting the weeding effect.

It is recommended to spray the herbicide when the ground is wet after the rain, when the herbicide is easy to diffuse to form an effective film.

*Corn sealing herbicide is not effective in the case of poor soil moisture in Biyu**. If the soil moisture is good, the effect is good, and vice versa. If the ground is dry, it is recommended to spray herbicides after rain or after irrigation.

Summary. Hello dear, <>

Sweet potatoes need to do these points, generally within 7 days after corn sowing herbicide, if the corn sprouts, do not spray again, be sure to pay attention to the dosage, too much is easy to cause pesticide damage.

Can you apply herbicides just after planting corn.

Hello dear, <>

Sweet potatoes need to do these points, generally within 7 days after corn sowing herbicide, if the corn sprouts, do not spray again, be sure to pay attention to the dosage, too much is easy to cause pesticide damage.

Generally, herbicides are applied within 7 days after corn sowing, if the corn sprouts, do not spray again, be sure to pay attention to the dosage, the amount of pesticides is too large and easy to cause pesticide damage. Commonly used corn sowing sealing herbicides include acetochlor, acetochlor, pendimethalin, metolachlor, azinone, etc.

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Pre-emergence herbicides should never be used after corn emerges. Because corn pre-emergence herbicides, such as acetochlor, gacaogen, grass and other herbicides, are very sensitive to corn, as long as the agent drifts a little, corn will be irretrievable, and even the yield will be greatly reduced, or not stick. Therefore, after the emergence of corn, pre-emergence herbicides should never be used, and only post-seedling stem and leaf herbicides can be used.

When the corn grows to 4 leaves and one heart to 5 leaves and one heart, weeds use corn stem and leaf herbicides in the 2 and 3 leaf stage, which is safer for corn.

After the emergence of corn seedlings, the herbicide can never be used before the corn land sealing and branch closure treatment, and the herbicide can only be treated with the stems and leaves after the seedling, which is very safe for corn seedlings. Acetochlor, atrazine, prometrinet, simazine, nicosulfuron, sulfonesulfuron, 2-methyl-4 chloride and other herbicides can be used, as a closed herbicide on the soil surface, it can generally prevent and remove weed seeds and young shoots that have not germinated or are about to germinate and have germinated, the effect is very obvious, corn herbicides must be cautious when using, 1. Herbicides have a lot of herbicides for some inbred varieties, such as sweet corn and sticky corn, and there are certain contraindications for these varieties, and they must be clearly distinguished when spraying. Don't make a mistake, or it will affect the growth of corn.

2. When the herbicide is used, it must be diluted twice, especially for powders, if there is no secondary dilution, some grass may be scattered and died, and some grass is not dead, which we call "flower face" here. It is caused by uneven stirring of this drug, and another point is that it must not be used with organophosphorus pesticides, otherwise there will be pesticide damage.

Corn planted in the ground, such as the round bridge fruit germinated, it is recommended not to play weeding year, in this way, it will be easy to burn the young shoots of corn, when playing herbicides, to care about the wisdom of the corn is not germinated, the herbicide is the best.

Herbicides cannot be used when corn has just germinated, which will lead to corn death if it is too early. Only when the corn grows taller, can the herbicide be used in moderation.

If the corn is planted in the ground and germinates, if it leaks, no herbicide can be used.

People can walk in the field, but they can make noise to play herbicides, which is called pre-seedling closed weeding.

After the seedlings are unearthed, two to three leaves, herbicides can be used.