How to prevent acid rot? How to prevent root rot?

Grape acid rot, after cracking the fruit is easily infected by bacteria, there is a sour taste, it belongs to the secondary infection disease, and it is the key to prevent white rot, gray mold, and anthracnose. Cut off the diseased particles and use the necessary prevention and control, or use didichlorate or prochloraz ididione + calcium, white rot, gray mold, anthrax, acid rot to prevent and control together. Fruit flies were found to be controlled with the addition of myxamine or avermectin.

There are three main methods of root rot prevention and control, the first agricultural prevention and control is mainly to do a good job in seedbed management and control of sprinkling. After sowing, the soil should not be too thick, and the moisture of the soil should be determined according to the weather conditions when sprinkling, and the amount of water should not be too much. The second is physical control.

Soak the seeds in warm water at about 55 degrees Celsius for about 10 minutes. There is also the direct use of pesticides to prevent and control. For example, if the seedlings are growing, then you can directly use wettable powder to irrigate the roots, and if there is already a disease, you can use 1500 300 times to irrigate the roots at this time.

2. Disinfection method.

Seed and soil disinfection method, seed disinfection can directly use warm water at 55 degrees Celsius, and then soak the seeds for about 5 minutes, and then put it directly into cold water to cool, so that it can be well germinated and sown. You can also soak the seeds in cold water for about 10 hours, and then soak them in the copper sulfate solution, about a few minutes, and then do some saltpeter lime and sow the seeds. Soil disinfection can be carried out directly by using Fumeishuang or Nahai, etc., and can be sprinkled directly into the soil.

Root rot mainly harms the roots, which is difficult to detect in the early stage, and once the symptoms of disease are shown on the ground, it is difficult to achieve the ideal control effect. You can dip the root with 50 times the solution of Bacillus subtilis wettable powder, and then colonize. It can also be used after soil disinfection, using well-rotted farm fertilizer, Bacillus subtilis wettable powder 500 times, flushed with water, or added to drip irrigation solution to irrigate the roots, irrigated once every 15 days, irrigated 2 3 times.

There are many methods for the prevention and control of root rot, which can be controlled by soil disinfection and pesticide control, and root rot can also be prevented and controlled by simple agricultural stubble, application of fully rotted farm fertilizer, and reasonable irrigation.

Root rot. Prevention and control methods:

1. Selected varieties: select and prepare the seedling plots. High-quality varieties were selected, and the seeds were soaked and treated with seed coating agent, and sown at the appropriate time.

2. Seedbed disinfection: Seedbed disinfection should be carried out 1 month before seedling, and 98% Langxin microgranules can be used, and the dosage is 15 20 kg per mu. First of all, clean up the diseased residues of the seedbed, and then water thoroughly (if the soil is moist, you can not water), so that all kinds of microorganisms in the soil can fully germinate and activate, break the dormant state, wait for the soil to dry slightly, plough the land, plough more than 20 cm, and loosen and level the soil.

3. Strengthen seedbed management: strengthen seedbed management, pay attention to loosening soil, increase soil permeability, avoid flood irrigation, ensure that there is no water to root the roots, and apply foot fertilizer. Control the temperature of the seedbed, keep it at 25 30 during the day and 10 15 at night to prevent the invasion of low temperatures.

4. Pharmaceutical prevention and control: the seedbed can be irrigated with 400 600 times of 84% Pulik water agent (2 3 kg of chemical solution per square meter); Or soak the seedlings with 400 600 times of 84% Pulik water agent before transplanting, or irrigate the roots with 400 600 times of 84% Pulik water agent after transplanting. In the early stage of the disease, the pesticide prevention and control should be sprayed with 50% carbendazim wettable powder 400 times or 50% dixone 800 times.

1. Choose and plant disease-resistant varieties in areas with severe disease, and try to avoid planting varieties with different maturity stages in the same orchard.

2. The vineyard should be inspected frequently, and the diseased particles should be removed in time and buried in a concentrated manner; increase the permeability of the orchard and reasonable dense planting; Irrigation is not possible during the ripening of the grapes.

3. Rational use or non-use of hormone drugs to avoid peel injury and fruit cracking; Reasonable granulation thinning; Avoid over-tightening the spikes; Use fertilizers wisely, especially avoid excessive use of nitrogen fertilizers.

4. Early prevention and control of powdery mildew and other diseases, reduce disease wounds, use safe pesticides in the young fruit stage, and avoid too tight peel or peel injury. 80% must be used in combination with pesticides, which is currently the only way to control acid rot chemically. Spray 400 times of 80% Bordeaux solution at the beginning of the self-sealing panicle stage, spray once in about 10 days, 3 times in a row.

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1. Agricultural prevention and control: strengthen seedbed management, the seedbed should not be too thick after sowing, and the seedbed sprinkling should depend on soil moisture and weather, and the amount of water should not be too much. Do not water around noon in the summer, and cultivate more to provide soil air permeability.

2. Physical control: soak seeds in warm water of 55 for 10 minutes.

3. Pharmaceutical prevention and control: the seedbed prevention uses wettable powder according to 2 4 grams per square meter for root irrigation, and can also use 1500 3000 times to irrigate the roots before or at the beginning of the disease, with 200 ml of liquid medicine per plant. When the disease is severe, the diseased plants should be removed, and the roots should be irrigated with solid roots.

Root rot. After the diseased plant is found, it should be dug up in time and sprinkled with lime in the disease hole for disinfection. At the beginning of the disease, for all plant roots, you can choose 1500 times of 10% difenoconazole water dispersible granules or 58% methyl frost and manganese zinc wettable powder, 60% oxanine wettable powder 500 times, 35% fu methyl wettable powder 900 times liquid, 3% maldew nail cream water agent 1000 times liquid, 69% enoyl manganese zinc or 72% frost urea manganese zinc wettable powder 800 times liquid, downy mildew water agent 400 500 times liquid and other agents for root irrigation and control!

Continuous prevention and control 2 3 times. Discontinue the drug 5 days before harvest.

1.Selected varieties: select and prepare the seedling plot.

Select high-quality varieties, soak the seeds + seed coating agent, and sow them at the right time. 2.Disinfection of seeds and cuttings:

Before sowing, the seeds can be mixed with antibacterial special or seed weight of powder rust with seed weight, or soaked with 80% 402 antibacterial agent emulsifiable concentrate 2000 times for 5 hours; The base of the cuttings can also be soaked in the same concentration of liquid medicine for 1 hour and then cuttings.

3.Seedbed soil disinfection, methyl frost mildew, carbendazim and other soil disinfection, and can also treat cataplexy and blight.

After planting, it is necessary to water in a timely and appropriate amount according to the temperature change to prevent the evaporation of water on the ground and the transpiration of water from the seedlings, and isolate virus infection. Phosphorus fertilizer was sprayed at the bud stage, young fruit stage and fruit expansion stage to enhance the nutrient matching function of the plant, thicken the fruit pedicle, promote the healthy growth of the plant, and enhance the disease resistance.

5.Pharmaceutical prevention and control. Copper preparations or methamethamine can be used to prevent and control the onset of the disease: Root irrigation can be carried out with methamethaline or copper preparations.

6.Timely prevention and control of underground pests and nematodes.

Golden branch jade leaf root rot, do a good job of this prevention, novices can also easily raise it.

Root rot, buying bucket heavy stubble can be solved, ** there are, I think it's okay, you can also try it.

Root rot is a soil-borne disease of plants caused by fungal bacteria.

Symptoms: Dark-brown from stem base to root, rotting, young leaves lose vitality and wither. Prevention and control methodsAgricultural control: strengthen seedbed management, seedbed covering soil should not be too thick after sowing.

Physical control: soak seeds in warm water at 55 for 10 minutes.

Pesticide control: seedbed prevention and use root rot net root irrigation, flushing, drip irrigation, irrigation root dilution 1000-1500 times, flushing, drip irrigation dilution 300-600 times, field crops recommended spraying, drenching root use.

Root rot occurs in the high humidity and rainy season in July and August, first in the roots of the plant begins to turn black and rot, and then the aerial parts quickly wilt and die. Prevention and control methods: avoid continuous cropping; Drain water in time to prevent water accumulation in the furrow; At the beginning of the disease, the roots can be irrigated with 70% dixone 1000 times.

Causes and control measures of peanut root rot and stem rot.

How to prevent root rot?