How to remedy the damage of corn smoke 5

High-efficiency corn herbicide, low-dose post-sprout application can effectively control a variety of annual gramineous weeds, broad-leaved weeds and sedge weeds in corn fields. It is rapidly absorbed by leaves and roots and conducts rapidly through xylem and phloem. Acetyllactate synthase is used to block the synthesis of branched-chain amino acids.

The weeds stop growing immediately after application, new leaves fade, necrosis, and gradually spread to the whole plant after 4 to 5 days, and the plant dies 20 to 25 days after treatment under normal conditions. Corn has good resistance to the drug, and there is temporary greening or slight stunting after treatment, but it can generally recover quickly and does not reduce yield. When corn is slightly damaged by nicosulfuron, the growth is temporarily inhibited, no treatment is required, and it can be recovered after a period of time, and the yield will not be affected.

If the drug is more serious, the following measures can be taken;

1) Water enough water to make the corn roots absorb a lot of water to reduce the herbicide concentration in the plant. Combined with watering, fertilizers such as manure and urine of well-rotted humans and animals, ammonium biurate, ammonium nitrate or urea are applied to promote root growth. Foliar sprays of 1% 2% urea solution or potassium dihydrogen phosphate solution or Huimanfeng 600 800 times solution can also be applied.

2) Spraying of yunzelinolide, gibberellin, and chloride can promote the early recovery of the damaged plants.

3) Appropriately increase the depth and frequency of hoeing to enhance soil aeration.

4) Timely control of pests and diseases to improve maize stress resistance. If the above measures still cannot alleviate the symptoms of drug damage, the seeds should be destroyed or replanted as soon as possible.

1) Strengthen field management. Timely watering and increasing the application of fast-acting fertilizers such as ammonium bicarbonate or urea can promote the absorption of more water by maize roots, improve the metabolic ability of maize and the degradation rate of nicosulfuron in the body, and promote the normal growth and development of maize as soon as possible. Proper tillage can enhance the permeability of the soil and enhance the ability of corn roots to absorb water and nutrients.

2) Spraying plant growth regulators or foliar fertilization. Foliar spray with 50 200ml l of gibberellin (920) solution or 1% 2% urea water or potassium dihydrogen phosphate solution after the dew dries in the morning or in the evening can effectively reduce the pesticide damage and promote the normal growth of corn.

3) For some herbicides that are easy to decompose and fail alkaline substances, quicklime or sodium carbonate water dilution can be used to spray crops, and the effect is good. Sufficient irrigation should also be used to promote root absorption, reduce the concentration of drugs in crops, and alleviate pesticide damage. For the discharge of excessive application, it can effectively reduce the damage of pesticides.

Clause. 1. Watering.

Clause. 2. Spray brassinin and good foliar fertilizer (containing chelated amino acids).

Clause. 3. Artificial help to curl the leaves into a cylindrical shape, the leaf edge is wrinkled, the heart leaf is oxtail-shaped, and the leaves that cannot be pulled out normally can be pinched by hand to remove the leaves that affect the core pulling, and the core leaves can be exposed. Method: Touch your fingers up and down, and pinch them off when they are hard and soft.

<> nicosulfuron corn pesticide damage is usually divided into two situations, one is a slight pesticide damage, at this time there is no need to carry out the antidote, due to the corn itself is strong hand resistance, the slight pesticide damage will disappear after a period of time, and the serious pesticide damage needs to be treated with the antidote, you can choose Yunda-120 dilution 1500 times or gibberellin plus 1% urea aqueous solution or dilution 500 times with antidote, foliar treasure dilution 500 times for spraying.

1. Nicosulfuron is harmful to corn production, can it be alleviated without antidote?

1. Slight pesticide damage: the resistance of corn itself is relatively strong, and generally there is no need to deal with slight pesticide damage, and the slight pesticide damage will temporarily inhibit the growth of corn, and it can be recovered after a period of time, and will not affect the yield in the later stage.

2. Serious pesticide damage: when the pesticide damage is more serious, it needs to be treated, you can choose Yunda-120 dilution 1500 times or gibberellin plus 1% urea aqueous solution or dilution 500 times with antipistol, foliar treasure, foliar spray in the morning or evening, can effectively reduce the pesticide damage.

Second, what is the appearance of corn singles and sulfuron

The effect of nicosulfuron alone is not very good, nicosulfuron only has a good effect on grasses, like the effect on broad-leaved grass and perennial weeds with perennial roots is not good, nicosulfuron belongs to the systemic type of Biling blind herbicide, and the time to kill weeds is also relatively long, usually about 20 days after use, if the temperature just drops or the weeds belong to the biotic, then the effect will be longer, in the corn field generally for wild oats, barnyard grass, Xanthium, dogtail grass, purslane, etc. But you can't get rid of all the weeds.