What do you know about root rot prevention and treatment programs?

Root rot is a kind of soil disease, and the main cause of the disease is soil and seed fungus. The conditions suitable for the onset of the disease are high temperature, high humidity, and rainy season weather. In recent years, it has often rained in the south since March, and the temperature is high in summer, such as Guangxi, Guangdong, Hunan, and Yunnan.

These areas are mainly planted with fruit trees, vegetables and other cash crops, so root rot is also a heart disease of fruit farmers and vegetable farmers. The analysis showed that the onset time of root rot may be the whole growth period of crop growth, and the treatment of root rot should start from the roots of plants, and consider the roots and bacteria together. The prevention and control of root rot should be started from these aspects:

Root rot plants first turn yellow from the lower leaf tips and edges, then extend to the entire leaf and gradually extend to the upper leaf. There are yellow-brown spots on the leaf surface, and there is a severe perforation, which eventually leads to the wilting and death of the whole yellow flower. The base of the stem-diseased ginger is a water-stained brown lesion, soft and rotten like hot water getting hot, and a quenching cold appears.

Ginger and roots are planted, and the roots of diseased ginger are underdeveloped. The water-stained form becomes soft and can be removed with heavy touch. The epidermis at the junction of the two bundles of ginger rots.

It is easy to fall off.

Loosen the soil, apply organic fertilizer, reasonable loading. Keep the trees strong by trimming and loading them properly. The water supply is even.

Do not water too frequently, do not have long-term drought, and the specific irrigation time should be carried out according to the water demand, precipitation, soil conditions and so on in different growth periods of crops. Choose the best varieties. Before sowing, use pesticides or fungal agents, mix soaking and seeds, ensure the sterility of seeds, improve the germination rate of seeds, and strengthen roots early.

Disinfect the soil. Disinfecting the soil with a disinfectant before planting can destroy the virus during the germination stage. In the cultivation process, it is necessary to reasonably control water and fertilizer, intensively cultivate, ensure the permeability and activity of the soil, and provide a high-quality soil environment for crops.

Use microbial agents. Supplementation with probiotics can form a dominant microflora environment, which has a significant preventive effect on a variety of soil-borne diseases. Take care to protect the roots.

Prevent mechanical damage during transplantation or loosening, and prevent damage to plants such as underground pests in time.

The fungus overwinters in the soil, if the disinfection is not strict, it will cause the fungus to be sown, and when it encounters long-term low temperature or rainy season weather, high temperature breaks out after rain, especially from late June to August, the temperature difference is so large, and the rainy weather is very beneficial to the penetration of the germ. During this time, diseases are common and the harm is serious.

The introduction of Songting Casimi (its ingredient is Ramycin), Casimi has obvious advantages in ginger stem rot and root rot. For all kinds of bacterial and fungal problems, it can play a good role in prevention and **. Its products have small particle size, strong penetration, and have a good effect.

Among them, turbicin has a preventive and advanced effect on root rot, and the product can be applied to the entire growth period without damaging seedlings.

To sum up, the above is the root rot prevention and the best program, we must pay attention to it.

To do a good job of prevention, to water and fertilize in time, but also to do a good job of insecticide and weeding, according to different situations to different agents, to pay attention to the use of the time of medicine, to prescribe the right medicine.

It is necessary to do a good job in prevention, to ensure that the bottom fertilizer is sufficient, to water and fertilize in time, and to do a good job in insecticide and weeding; It is necessary to choose different agents according to different situations, and pay attention to the time of use and the efficacy of the drug.

It is necessary to strengthen field management, prevent injuries in advance, loosen the soil in time, protect the roots, disinfect in advance, pay attention to climate changes, and pay attention to the situation of medicines.

Be sure to spray pesticides in time, use organic fertilizers, strengthen nutrition in time, pay attention to the condition of the soil, and never let the soil be too dry.

The special environment of root rot has brought certain difficulties to the prevention and control. It is necessary to adopt a prevention-oriented and comprehensive management approach to reduce losses.

1. On-site management.

1.Loosening the soil. Ditch drainage and drain the water in the tea garden in time.

Increasing the application rate of organic fertilizer can promote the vigorous growth of the root system, enhance the ability to resist diseases, and facilitate the growth of antibiotic-producing bacteria in the soil. When a diseased plant is found, a deep trench should be opened in time to separate the diseased plant from the healthy plant to prevent the spread of the disease.

2.Reasonable load. By pruning, the tree is properly loaded and the robustness of the tree is maintained.

3.Uniform water supply. Do not water too often and do not have a prolonged drought. The specific irrigation period should be determined according to the water requirement, precipitation and soil conditions of crops at different growth stages.

2. Agricultural control.

Strengthen soil fertilizer and water management, increase the application of organic fertilizer and potassium fertilizer, rational irrigation, increase organic matter content, and improve soil structure. During the growing season, ploughing, weeding, and soil moisture should be maintained in time. Activate the soil layer, control other pests and diseases, prune reasonably, control the size of the year, and keep the trees strong.

1. Biological treatment: In each growth period of crops, for example, the use of Woyegenlov rooting agent to promote crop rooting, supplement trace elements and organic matter, achieve crop root development, nutrient balance, and improve crop disease and stress resistance. Woyegenlov leaf fertilizer can be used for foliar spraying, which can not only supplement trace elements, but also its core material polymer immunoglobulin can greatly improve the immunity and disease resistance of crops, so that crops do not get sick and get sick less.

For plots with severe disease every year, spraying on the leaves before and after rain is more effective.

2. Chemical treatment: once a disease occurs, add the fungicide oxamidine during use and spray it on the leaves of the whole field. For plants with serious diseases, irrigate the roots with medicated solution, spray 2 3 times every 3 5 days, and irrigate the roots can control the spread of the disease again.

In the slow seedling stage, spray leaf functional liquid fertilizer and rooting agent on the leaves to promote the crops to take root as soon as possible and resume growth. When the disease of lumps occurs, the roots are watered with medicated water every 7 10 days, a total of 2 3 times. Fertilize in time after treatment to promote early growth of new roots.

The recommended agent is 600 800 times that of 40% sodium disulfonate wettable or 800 1000 times that of 70% thiophanate-methyl wettable powder.

The most effective methods of root rot are as follows:

Generally, you can do a good job of draining water and draining the stagnant water. It is necessary to use fermented and rotted imitation organic fertilizer to balance the soil pH value, improve the soil environment, increase air permeability, and have a good effect on root rot. In daily life, root rot is a relatively common disease in crops, which can cause the affected plants to be short, and the leaves to turn yellow, fall off, wilt and dry up.

If you don't do it in time, the consequences are serious. As a result, the losses for the farmers who are slow to prepare for the delay are also quite heavy. Root rot is harmful to crops, harming seedlings, and gradually expanding to the taproot, and the taproot will be slowly infected.

It will lead to the aggravation of root rot in the later stage, the function of absorbing water and nutrients will gradually weaken, and when the disease is severe, the wilting condition can not be recovered at night, and the whole leaf will be yellow and wilted, so it must be found in time.

Root rot

Caused by fungi, nematodes, bacteria. The roots of the damaged plants rot or even die, and the diseased plants die. Fungi such as Pythium, Phytophthora phytophthora, Rhizoctonia, Fusarium and Sclerotinia are the main pathogens.

The pathogenic nematodes are mainly brevid. There are very few bacteria that cause root rot. The main root rot diseases are total wheat erosion, beet root rot, bean root rot, and asarum root rot. **Complex, often caused by 2 to 3 types of pathogens or 2 different classes of pathogens.

Root rot is very common in agricultural planting and fruit tree planting, its main manifestation is that after the onset of the disease, the leaves of the plant suddenly appear wilted, become wilted, and dig out the underground roots, which can be seen that the diseased root system is yellow or rotten, and when the disease is severe, it can cause the whole plant to dry up.

There are two main reasons for the occurrence of root rot:

First, topography and environmental factors. The incidence is high in low-lying plots, serious water accumulation, high soil viscosity, and serious soil compaction. Second, bacterial infection.

If there are pathogens in the soil, when the root system of the plant is damaged or the plants and seedlings are thin, the pathogens will take the opportunity to enter and infect the root tissues of the plants, causing diseases.

In terms of prevention and control, if the disease is caused by terrain and environmental factors, it is a physiological disease, and it can promote the vigorous growth of plants and increase disease resistance through drainage and improving the ventilation and ventilation performance of the soil, and increasing the application of organic fertilizer and biological fertilizer.

If a disease is caused by a bacterial infection, the first thing to do is to use effective methods to stop the spread of the bacteria to the surrounding area. You can pick out the diseased plants, use quicklime to eliminate the diseased holes, or dig holes and water to prevent the spread of germs. Secondly, improve the soil structure, increase the supply of fertilizer and water, and promote rooting.

Finally, the initial stage of the disease is treated with pesticides.

Because the absorption and utilization of drugs after root rot occurs in different crops, they are not the same. Because, for different crops, suitable pesticides should be selected for control. Here are a few common methods to control root rot in crops.

First, wheat root rot.

The main thing is to choose new disease-resistant varieties for planting as much as possible, and use less or no self-kept seeds. Before sowing, the seeds should be soaked and dressed, the cultivation density should not be too crowded, the field should not be wet for a long time, and the seedlings should be squatted moderately. In the early stage of the disease, mancozeb or sclerotia should be used for timely prevention and control, and second, tomato and green onion root rot.

Plant high ridges, drain water in time after rain, remove the remains of diseased plants in time, and sprinkle quicklime around the holes of diseased plants for disinfection and sterilization. In the early stage of the disease, copper sulfate solution, methyl butozine wettable powder, and dimetallin wettable powder can be used to irrigate the roots with water.

Third, fruit tree root disease.

In addition to normal agricultural control, after the detection of diseases, the severely diseased roots can be removed, and the rooting powder can be applied to promote the growth of new roots, and copper sulfate or nail cream can also be used. Root irrigation treatment. After that, the application of organic fertilizer and biological fertilizer can not only improve soil quality, but also promote the strength of fruit trees and increase disease resistance.

In short, root rot damages a wide range of crops and is very harmful. Improving the planting environment and increasing the disease resistance of plants, as well as adapting measures to local conditions, symptomatic drug prevention and control are more effective control measures.

Root rot is one of the soil-borne diseases, caused by a variety of pathogenic bacterial infection, root rot after disease, the absorption of water and nutrients gradually weakens or even disappears, the symptoms can be seen in the new leaves gradually yellowing and wilting, and finally the whole plant dies, the main damage crops are strawberry root rot, beet root rot, tomato root rot, pepper root rot, peanuts, cucumbers, tomatoes, fruit trees, watermelons, melons and other root rot and other root rot and other causes of root rot 1, the use of unrotted compost, organic fertilizer and other organic matter buried in the soil to rot, Oxygen inhalation and harmful gases are produced, and the soil will be in a state of hypoxia, making the roots unable to breathe, and will hinder the respiration and metabolism of the roots.

It is best to use plant-specific insecticides, evenly spray on plant leaves, and should not be watered during the medication, otherwise there will be no effect. Just spray a few more times.

(1) Prescribe the right medicine and choose the right drug** (2) Manage the density of planting (3) Maintain soil permeability.

How to treat orchid root rot? Use this 1 thing, you can**.