How to treat walnut root rot and what medicine to use for walnut black rot

The disease, also known as white silk disease, is a fungal disease, which occurs in southwest China (Yangbi and other places in Yunnan). It is mostly harmful to one-year-old seedlings, causing the main root and lateral root cortex to rot, the aboveground part to die, and even the whole tree to die.

Main characteristics]: At high temperature and high humidity, white silky mycelium is produced at the base of the root neck of the seedling and the surrounding soil and the surface of the fallen leaves, and then small sclerotia grow, which are white at first and then turn brown.

Pathogenesis]: The pathogen overwinters in the remains of the diseased plant and the soil, and mostly invades from the neck of the seedling, and the disease is serious when it encounters high temperature and humidity. Generally, the disease begins in late May, and the peak period of disease is 6 to 8 months, and it is easy to get sick when the seedlings are raised on the soil clay and heavy soil, acidic soil or previous vegetables, grains, etc.

Prevention and control methods] :(1) Avoid continuous cropping in sick nurseries, select places with good drainage and low groundwater level as nursery land, and adopt high bed seedlings in rainy areas.

2) Dry or change the soil with guest sand. Soil change can be carried out once a year, and generally 1 2 times will be effective.

3) Seed disinfection and soil treatment. Before sowing, use 30% phenanthrene powder or 50% carbendazim powder to mix seeds, and add lime or plant ash to acidic soil appropriately to neutralize acidity and reduce the incidence of disease.

4) Watering the roots of diseased trees with 1% copper sulfate or 500 1 000 times of methyl tobuzin, and then sprinkled with slaked lime into the base of seedling stems and root limit soil, or watering the soil with 1 000 times of ammonium dysenammonium water, which has a certain inhibitory effect on the disease.

Prevention plan: Before the onset of the disease, spray according to 800 times dilution solution, and use the drug once every 15 days. ** Scheme, in the case of mild onset, dilute and spray according to 800 times, and use the drug once every 10-15 days; When the condition is severe, dilute it with 500 times of the liquid and spray it once every 7-10 days.

Breeding resistant varieties is one of the important ways to prevent and control the disease, and the disease resistance should be taken as one of the important indicators in the selection of walnut, and the use of fungicides before or at the beginning of the disease is a more effective measure to prevent and control the disease.

Strengthen the cultivation management of the group's reputation, cultivate strong seedlings and trees, prune reasonably, and reduce microclimate humidity; Remove diseased leaves, fruits, and branches in time to reduce pathogens in the field.

Symptom. The fruit is infected in the early stage, and small brown spots appear on the green skin, which gradually expand into a black-brown color, and the flesh rots. The fungus can infect the kernel part, and finally the whole fruit will rot, shrink and fall off.

Due to the hardening of the endocarp, although the flesh is rotten, it is not rotten to the kernel, and it is not easy to fall off, and the loss is small. It can also infect young branches, young leaves and flowers, and the disease is in full bloom during the rainy season.

Do not apply nitrogen fertilizer, increase phosphorus and potassium fertilizer, and cultivate strong seedlings to improve the disease resistance of the plant itself. Appropriate amount of irrigation, rainy days or afternoons should not be watered to prevent frost damage.

Summary. Dear, it's hard to cure 1Scrape off the lesions: use a knife to make a few longitudinal strokes along the trunk of the tree with a knife on the rotten lesions, and then spray the lesions with peracetic acid solution, and spray them again at an interval of 10 to 15 days.

How to cure walnut tree rot disease.

There are also insects on the trunk of the walnut tree.

Now the leaves are all dead.

Why can't this be sent**?

Hello, dear, before or during the onset of the disease of the canopy spray, you can apply 50% carbendazim wettable powder 800 times liquid or 75% chlorothalonil 600 times liquid or 50% methyl tobuzine wettable powder 1000 times liquid spray, spray 1 time every 7 days, spray 3 times.

Dear, I can't send ** is a system bug

There are already a lot of holes in the torso, and now that the leaves are all dead, is there anything else to save?

Dear, it's hard to cure 1Scrape off the lesions: use a knife to make a few longitudinal strokes along the trunk of the tree with a knife on the rotten lesions, and then spray the lesions with peracetic acid solution, and spray them again at an interval of 10 to 15 days.

Spray the crown with 50% carbendazim wettable powder 800 times or 75% chlorothalonil 600 times or 50% methyl tobuzine wettable powder 1000 times, spray once every 7 days, spray 3 times in a row, but this disease is seriously prevented.

What kind of disease is this? Isn't that what walnut tree rot disease?

Dear, yes. It's walnut rot.

Raw insects also accelerate the spread of germs.

High-potency chloroflazir.

Kiss. This can also be a pesticide.

It can be used for insecticides and fungicide compounds.

Summary. It is necessary to remove the remnants of diseased plants, diseased fruits, leaves, and branches in a timely manner, and completely remove the diseased leaves and residues after pulling seedlings, and ventilate in time to reduce or avoid foliar condensation; Choose suitable fertilizers to provide sufficient nutrients for walnut trees to resist pests and diseases; If you find that the branches with insect fungus are pruned in time, if most of the tree is infected by pests and diseases, you need to spray the pesticide immediately.

How about walnut bark rot disease**?

It is necessary to remove the remnants of diseased plants, diseased fruits, leaves, and branches in a timely manner, and completely remove the diseased leaves and residues after pulling seedlings, and ventilate in time to reduce or avoid foliar condensation; Choose suitable fertilizers to provide sufficient nutrients for walnut trees to resist pests and diseases; If you find that the branches with insect fungus are pruned in time, if most of the tree is infected by pests and diseases, you need to spray the pesticide immediately.

After the walnut tree suffers from canker disease, the bark should be scraped clean, otherwise the liquid will not easily penetrate into the diseased part, and then use a sharp knife to cut a knife along the bark from top to bottom centimeter, a centimeter to the xylem, and then apply the agent.

The development is very fast, and the stone sulfur mixture was used before.

Is there any other specific medicine?

There is no specific medicine pro,

Summary. Hello dear, the latest, most effective and fastest way to peach tree and cherry root rot, dig up the diseased tree, find the diseased spots, no need to treat the diseased spots, directly apply the biological bacterial organic fertilizer to the diseased spots, Yijiabao, bio-organic fertilizer or Zibainong biological organic fertilizer 2 kg or 2 taels of deepening three feet 2 taels or Huatailong synergist 2 taels, bury the soil and water, half-moon leaves from yellow to green, 20 days later, all the leaves turn green, and grow a new piggyback. It must be a biological organic fertilizer, which should contain a variety of beneficial microorganisms, mainly containing Bacillus megagenesis, Bacillus subtilis, Bacillus amylolique, Trichoderma, Bacillus licheniformis and other probiotics that have a killing and inhibiting effect on pathogens.

This method is simple, practical, effective and low-cost.

Hello dear, peach tree, cherry root rot latest, the most effective, the fastest method, dig up the diseased tree, find the diseased spots, no need to talk about the disease spots to accompany the treatment, directly apply the biological bacteria organic fertilizer to the lesion site, Yijiabao, biological organic fertilizer or Zibainong biological organic fertilizer 2 kg or sober 2 kg of deep three feet 2 taels or Huatailong synergist 2 taels, buried soil watering, half moon leaves from yellow to green, 20 days later, all the leaves turn green, and grow a new piggyback. It must be a biological organic fertilizer, which should contain a variety of beneficial microorganisms, mainly containing Bacillus megagenesis, Bacillus subtilis, Bacillus amylolique, Trichoderma, Bacillus licheniformis and other probiotics that have a killing and inhibiting effect on residual bacteria. This method is simple, practical, effective and low-cost.

Bacillus subtilis mainly has antibiotic effect and bacteriolytic effect, first adsorbed on the hyphae of pathogenic bacteria, and grows quietly with the growth of mycelium, producing lytic substances to break the hyphae, or producing antibacterial substances through the cell wall or cell membrane of the spores of pathogenic bacteria, resulting in cell wall perforation, deformity, and thus inhibiting the germination of spores. When Bacillus megaterium is applied to the soil, it rapidly multiplies and becomes the dominant bacterium, controlling the nutrients in the rhizosphere and opening up other resources. The pathogenic bacteria have lost their living space and conditions.

Trichoderma has an inhibitory and killing effect on harmful fungi in the soil, which can kill pathogenic bacteria and purify the soil to overcome bacteria. Bacillus licheniformis protects against soil-borne diseases. Biological organic fertilizer not only contains organic matter, but also contains a variety of beneficial active microorganisms, which can improve the soil, fertilize the soil, enhance soil permeability and improve the content of organic matter.

Create a good growth environment for the root system, the tree will be strong if the roots are good, and the strong tree will bear good fruits.

This is the most effective.

Summary. Walnut tree rot disease, also known as rotten skin disease and black water disease, is a disease that occurs on walnut trees caused by the infection of juglans conchocystosis. It mainly harms the bark of branches, and the symptoms of the disease are different due to the age of the tree and the affected parts.

After the tree is damaged, the leaves lose green and turn yellow, and the leaf edges form black-brown spots that curl downward. After the young tree is damaged, the diseased part reaches deep into the xylem, and callus appears around it, which is dark gray diamond-shaped spots, water-stained, and liquid appears when pressed by fingers, and has a sake lees smell. In the later stage, the lesions sink, resulting in dark spots, and then the lesions are longitudinally cracked, and a large amount of black water flows out.

After the adult tree was damaged, due to the thick bark, there were no obvious symptoms on the outside of the lesions, and when the cortex was found to be overflowing with black liquid, the subcutaneous surface had expanded into a large ulcer surface. [1][2]

Walnut tree rot disease occurs in walnut producing areas of China. In the areas where Xinjiang walnut is intensively introduced, the management is extensive and the tree is weak, the disease occurs seriously, and the diseased plant rate can reach more than 80%, resulting in the death of large branches or even the whole plant, which seriously threatens the development of walnut production. [3][1]

The control methods of walnut tree rot disease are mainly agricultural control and chemical control. First of all, comprehensive control measures should be taken to strengthen cultivation management and enhance tree potential, supplemented by spraying to treat spots and prevent frost damage. [4]

What is walnut rot disease?

Hello, I am helping you to inquire about the relevant information and will reply to you immediately.

Walnut tree rot disease, also known as rotten skin disease and black water disease, is a disease that occurs on walnut trees caused by the infection of juglans conchocystosis. It mainly harms the bark of branches, and the symptoms of the disease are different due to the age of the tree and the affected parts. After the tree is damaged, the leaves lose green and turn yellow, and the leaf edges form black-brown spots that curl downward.

After the young tree is damaged, the diseased part reaches deep into the xylem, and callus appears around it, which is dark gray diamond-shaped spots, water-stained, and liquid appears when pressed by fingers, and has a sake lees smell. In the later stage, the lesions sink, resulting in dark spots, and then the lesions are longitudinally cracked, and a large amount of black water flows out. After the adult tree was damaged, due to the thick bark, there were no obvious symptoms on the outside of the lesions, and when the cortex was found to be overflowing with black liquid, the subcutaneous surface had expanded into a large ulcer surface.

1][2] Walnut tree rot disease occurred in walnut producing areas in China. In the areas where Xinjiang walnut is intensively introduced, the management is extensive and the tree is weak, the disease occurs seriously, and the diseased plant rate can reach more than 80%, resulting in the death of large branches or even the whole plant, which seriously threatens the development of walnut production. [3][1] The main control methods of walnut rot disease are agricultural control and chemical control.

First of all, comprehensive control measures should be taken to strengthen cultivation management and enhance tree potential, supplemented by spraying to treat spots and prevent frost damage. [4]