How to use walnut tree seasonal treatment?

If only the twigs are dry, it is caused by the cicada laying eggs in the twigs. If it is a large branch or a small branch is more common, it is caused by internal borers or branch blight, and the disease needs to be combined with more organic fertilizers and sprayed with systemic pesticides or biological pesticides.

The parasitic grass on the walnut tree is called quercus parasitism. Its extract can be pharmaceutical. The eggs you said about boiling eggs with it may be a home remedy, and you need to ask a Chinese medicine practitioner.

The walnut tree parasite you said doesn't see things, it's hard to say. However, it is generally the same as mulberry parasitism and pavilion parasitism. There are no medical reports of cancer, and this category is the main cardiovascular and cerebrovascular diseases.

5 walnuts, 30 grams of sugar, mashed like puree, put in a pot and add 50 ml of rice wine, and fry over low heat for 30 minutes.

Control methods (1) Improve the soil, strengthen cultivation management, increase organic fertilizer, reasonable pruning, enhance tree potential, and improve disease resistance. (2) In early spring and the growth period, the lesions should be scraped and treated in time, and after scraping, 50 times of 50% methyl thiobacterium wettable powder was disinfected with 21 30 times of 45% crystal stone sulfur mixture, 5 10 degrees of baume stone sulfur mixture, and 1000 times of 50% benmyazine wettable powder. (3) The trunk should be coated with white to prevent freezing, and in areas with long sunshine in winter, the lesions should be scraped off before winter, and then the white coating should be applied to prevent the trunk from freezing and prevent the occurrence and spread of the disease.

2013-7-16 · Generally, walnut trees with extensive management, poor soil, poor drainage, insufficient fertilizer and water, weak trees or frost damage and salt damage are susceptible to this disease. Prevention and control methods. (1) Strengthening the comprehensive management of walnut orchards, improving the nutritional level of trees, and enhancing tree potential and cold and disease resistance are the basic measures for the prevention and control of this disease.

2) Frequent inspection, once found, scrape and treat the lesions in time

Joan Wen,. No, you go and untie it to get the cooling air filter.

Summary. Physiological disorders.

It is generally caused by a lack of fertilizer or a lack of trace elements, so fertilization is very important. In the early stage, nitrogen fertilizer was mainly applied, and walnut stabilized fruit fertilizer was applied early. At the end of May and the beginning of June, 300 times of forest fruit enhancer and then long-acting insecticides, such as imidacloprid, chlorpyrifos and other pesticides are used to spray the foliar surface of walnut trees, which can prevent and control the physiological fruit drop of walnuts, and prevent and control the larvae of more than 10 kinds of pests such as the main stem, branches, young fruits and leaves of walnuts, and eliminate them in the initial stage.

What medicine can walnut trees take to prevent fruit dropping.

Physiological disorders are generally caused by a lack of fertilizer or trace elements, so fertilization is very important. In the early stage, nitrogen fertilizer was mainly applied, and walnut stabilized fruit fertilizer was applied early. At the end of May and the beginning of June, 300 times of forest fruit enhancer and then long-acting insecticides, such as imidacloprid, chlorpyrifos and other pesticides are used to spray the foliar surface of walnut trees, which can prevent and control the physiological fruit drop of walnuts, and prevent and control the larvae of more than 10 kinds of pests such as the main stem, branches, young fruits and leaves of walnuts, and eliminate them in the initial stage.

Poor pollination and insemination Walnut artificial pollination can improve fruit setting rate.

High temperature and drought For the flower and fruit drop caused by high temperature and drought, the technical measures for drought resistance of walnut seedlings should be strengthened, and different measures should be taken according to local conditions. Tree disk covering. Loosen the soil, cut the grass and bury the green, that is, cover the weeds or orange stalks in a diameter of up to 1 meter around the roots of the hickory tree to conserve water in the woodland and improve moisture.

At the same time, new technologies such as spraying anti-transpiration agents, water-retaining agents, and foliar fertilization were adopted to improve the drought resistance of trees, prevent fruit drop, and promote fruit growth.

Pest and disease attack Flower bud maggot and gray mold are the main pests and diseases of pecans, once they occur, they will seriously affect pollination and cause a large number of flowers and fruits. Therefore, doing a good job in the prevention and control of diseases and pests at the stage of walnut buds is an important measure to achieve stable and high yield of walnut.

Anti-falling spirits.

If you want to reduce the occurrence of walnut fruit drop, you need to carry out more scientific and standardized management of the cultivation of fruit trees, and you must pay attention to the density of planting in the process of fruit tree planting.

For permanent trees, it is necessary to analyze from a long-term perspective, cultivate the canopy, and for temporary trees, it is necessary to clarify the growth years, try to make the fruit trees bear fruit earlier, and remove them when they have an impact on the fruit of permanent trees.

Secondly, it is necessary to do a good job in crown control, make the management work more refined, strictly do a good job in crown control measures, carry out reasonable watering and fertilization, do not blindly fertilize, control the height of the trunk and the thickness of the branches, and in the hot summer, it is necessary to put more and cut less, and thin the upper end of the competitive branches, so as to promote its early fruiting and achieve the purpose of crown control of fruit trees.

I.1Walnut tree fruit drop control method: strengthen cultivation management, spray 1-3 times of 1::200 Bordeaux solution during the growth period, or 50% methyl tobuzin or 500-800 times of antibacterial special wettable powder.

2.Walnut black spot disease: Walnut black spot disease is a bacterial disease.

It mainly harms fruits, leaves and branches. After the fruit is damaged, small and slightly raised black-brown spots appear on the fruit surface, and then expand into round or irregular black spots and sink, without obvious edges, and the surrounding area becomes water-stained, and the fruit rots from the outside to the inside. After the leaf is damaged, small black spots appear along the leaf veins first, and then expand into nearly circular or polygonal black spots, and in severe cases, the lesions are continuous, resulting in perforation and early defoliation.

As a result, the fruit turns black and falls early, and the kernel yield and oil content are reduced.

2. Pest control.

1. Spring inchworm: Spring inchworm feeds on walnut leaves with larvae, and when it occurs largely, walnut leaves are eaten out, which seriously affects the growth and yield of trees. The prevention and control methods are:

Adult stage black light trapping or artificial capture of adult worms; In areas with a high density of pupa, organize the masses to dig up pupae in early spring; Before the 4th instar, the larvae were sprayed with 50 phosphine emulsion 2000 times or 20% rapid killing 3000 4000 times. The best time to control it is in mid to late April.

2. Sugar maple scale. Sugar maple mainly harms the branches of 1-3 years old, absorbs the nutrients of the tree, causes the tree to weaken, and even the branches die, resulting in poor fruit quality, empty shells and deflated shells, affecting the yield. The best time for prevention and control is in early June, with 3000 times of rapid culling, spraying 2-3 times continuously, with an interval of 7-10 days each time, and the control effect is better.

3. Red spider. Spider mites mainly harm leaves, absorb tree nutrients, serious in mid-to-late August to September, can lead to leaf drying, leaf shedding, empty shells increase, affecting the yield of the year can reach more than 50%, so we must pay attention. The best period for control is mid to late June, in order to reduce the density of insect populations and control the rampant period from August to September, it is necessary to use pesticides with better acaricidal effects, such as avermectin, refined mite, baafen, sweep mites and other pesticides.

In the summer production and cultivation management of walnut trees, through reasonable management of soil water and fertilizer, effective prevention and control of pests and diseases, attention to planting density, and maintenance of ventilation and light transmission in the canopy, the purpose of high and stable yield and increased income can be achieved.

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.

When the walnut tree is maintained, it is best to plant it in a relatively wide area, so that it has a good ventilation environment, which can reduce the occurrence of disease pants residue pests, and must use healthier seeds, and disinfect once before planting, and when pests and diseases occur, the diseased leaves need to be cut off, and sprayed with pesticides**.

Common diseases of walnut trees.

AnthraxAnthracnose mainly harms walnut fruits, mostly occurs in the rainy season and weak plants, when the disease occurs, the germs will generally enter from the wound, and there will be brown or black lesions in the early stage, and in severe cases, it will cause the fruit to rot and fall off, and the leaves will wither and yellow.

MelanomaWhen walnut trees occur black spot disease, it will cause fruit rot, which is a more serious disease, generally in July and August, it belongs to the peak period of this disease, and it is necessary to prevent and control it in time when it occurs.

Cultivated walnut trees are the main insect pests.

There are many insect pests of walnut trees, but as long as it is not a large-scale insect pest, the damage to the plant is not small, the main insect pests are scale insects, orange pure cattle, beetles and a variety of moths, as long as they are found after timely control, and the removal of infected leaves will not affect the growth of the plant.

When the walnut tree is maintained, it is best to plant it in a relatively wide area, so that it has a good ventilation environment, which can reduce the occurrence of pests and diseases, and must use healthier seeds, and disinfect once before planting.

It is powdery mildew, and the symptoms are: the surface of the leaf produces a white source powder layer, causing the leaf to fall off early.

Transmission route and pathogenic conditions: Powdery mildew overwinters on diseased leaf litter with closed cyst shells. Ascospores are emitted from rain in the following spring, and a large number of conidia are produced after the infection occurs, which are spread by airflow and re-infected for many times, and the disease enters the peak period of disease in May and June, and the disease gradually stagnates after July.

In spring drought years, poor management, weak trees, and severe disease may occur.

Prevention and control methods. 1) At the end of autumn, remove diseased leaves and diseased branches, destroy them in a centralized manner, and apply callus antiseptic film to the edge of the whole pruning knife to prevent re-infection of pathogens.

2) Strengthen management, reasonable irrigation and fertilization, control the amount of nitrogen fertilizer, appropriately increase the amount of phosphorus and potassium fertilizer, spray new high-fat film in a timely manner, protect moisture and fertilizer efficiency, prevent dissipation and volatilization, and enhance tree resistance.

3) Before germination, you can apply the tree guard general to reduce the source of bacteria. At the beginning of the disease, spraying 50 ditans (benzylmonate) wettable powder 800 times and adding a new high-lipid film can greatly improve the prevention and control effect. ，

According to your description, it should be a scale worm.

The following agents can be used: 20% dimephine emulsifiable concentrate, 1000 1500 times liquid, 1500 2000 times dichloride solution, 1500 2000 times liquid or 40% Lesdaben 800 1000 times solution, which can effectively kill mealybugs.

In addition, it is best to attach ** to such questions to help judgment and prevent misdiagnosis.

The diseases that harm walnut trees (orchards) are: walnut rot disease, black spot disease, branch blight, etc., and the main insect pests are: branch moth, horn-spotted ancient toxin moth, cloud-spotted longhorn beetle, grass scale, etc. Prevention and control methods.

1. Prevention and control of diseases. Before the onset of the disease, it is necessary to carry out pesticide killing treatment according to the requirements of plant protection, and add a new high-fat film to improve the control effect. Before winter, the dead leaves of the plants, especially the parts that are susceptible to diseases, should be pruned and pruned, and the pruned branches should be removed in time and incinerated in other places to remove the virus**.

The pruning mouth should be coated with callus antiseptic film to promote wound healing as soon as possible, and all plants in the garden should be sprayed with tree protectors to improve their ability to prevent cortical pests and diseases and inhibit virus replication, and resist various bacterial infections.

2. Pest control: Before winter, we should completely remove the weeds between the surface bushes, turn the moisture deeply, and carry out targeted pesticide treatment, and spray the new high-fat film to enhance the efficacy, thoroughly, and control the overwintering environment of pests. The pest control of different growth periods should be targeted according to the requirements of plant protection, and new high-lipid film should be applied to enhance the control effect.

It is also necessary to spray the tree protector regularly to enhance the insect control and disease resistance of the plant and ensure its healthy and strong growth.

3. In the bud stage, young fruit stage and fruit expansion stage, it is necessary to apply a strong fruit to strengthen the flower and fruit, and enhance its ability to resist diseases and pests.

Summary. Measures to prevent fruit drop of walnuts.

1. Choose varieties suitable for local climate and soil conditions, and generally choose those thin-shell varieties with robust growth, strong stress resistance, high quality and high yield. Walnut is a monoecious heterofloral plant, and it is best to choose 2-4 male and female flowering periods at the same time or complementary main cultivars, or configure suitable pollination varieties.

2. Strengthen the fertilizer and water management of walnut trees, apply more than 1500 kg of soil miscellaneous fertilizer and more than 50 kg of potassium sulfate compound fertilizer per mu to ensure that walnut fruit set has enough nutrition. In addition, the introduction of some bees to assist in pollination is very effective.

3. Generally, fruit trees require more water in the three periods of germination, flowering and young fruit expansion, and should be irrigated in time, and these three irrigations can be combined with top dressing. Drought resistance agents can also be used in arid mountain orchards to enhance the drought resistance of fruit trees. If excessive rainfall causes water accumulation in the park, the drainage ditch in the park should be dredged to avoid waterlogging.

4. Walnut trees fall fruit in the later stage, that is, large fruits. It is generally manifested in July, and this period of high temperature and rain is prone to anthracnose, mainly due to bacterial and fungal infections that cause a large number of walnut trees to drop fruits. It is recommended to spray pesticides such as methyl tobuzin and carbendazim for germ control.

5. Too much summer shoots consume a lot of nutrients, which will cause flowers and fruits to fall. Therefore, the pressure is controlled in the summer.

What medicine can walnut trees take to prevent fruit dropping.

Walnut anti-fruit fall measures 1, choose varieties suitable for local climate and soil conditions, generally should choose those thin-shell varieties with robust growth, strong stress resistance, high quality and high yield. Walnut is a monoecious heteroflora plant, and it is best to select 2-4 male and female flowering periods similar or complementary main varieties at the same time, or configure suitable pollination varieties. 2. Strengthen the fertilizer and water management of walnut trees, apply more than 1500 kg of soil miscellaneous fertilizer and more than 50 kg of potassium sulfate compound fertilizer per mu to ensure that walnut fruit set has enough nutrition.

In addition, the introduction of some bees to assist in pollination is very effective. 3. A hail-like fruit tree needs a large amount of water in the three periods of germination, flowering and young fruit expansion, and should be irrigated in time, and these three irrigations can be combined with top dressing. Drought resistance agents can also be used in arid mountain orchards to enhance the drought resistance of fruit trees.

If excessive rainfall causes water accumulation in the park, the drainage ditch in the park should be dredged to avoid waterlogging. 4. Walnut trees fall fruit in the later stage, that is, they leak large fruits. It is generally manifested in July, and this period of high temperature and rain is prone to anthracnose, mainly due to bacterial and fungal infections that cause a large number of walnut trees to drop fruits.

It is recommended to spray pesticides such as methyl tobuzin and carbendazim for germ control. 5. Too much summer shoots consume a lot of nutrients, which will cause flowers and fruits to fall. Therefore, the pressure is controlled in the summer.

Too much summer hair extraction consumes a lot of nutrients, which will cause flowers and fruits to fall quietly and quickly. Therefore, the pressure control of summer shoots, the consumption of nutrients in summer shoots, and the concentration of nutrients for the growth of flowers and fruits.

What kind of medicine to prevent fruit fall for fruit trees.

Fruit trees can not be prevented from spraying after fruit drop, but to prevent fruit drop in the later stage after the fruit tree is open and sold to prevent fruit fall, naphthalene acetate or other anti-falling hormone can be sprayed, which can promote the fruit of eggplant and reduce the physiological fruit drop, and can also spray amino acids, rare earth or other micro-fertilizers on the leaves every 7-10 days in the young fruit stage.