How to control pests and diseases in peach trees?

The main diseases of peach trees are: peach gum disease, peach rot disease, peach leaf shrinkage, peach scab, peach perforation, etc. The main pests of peach trees are aphids, leaf rollers, leaf mites, heart borers, scale insects, longhorn beetles, peach borers, beetles, etc.

1.Dormancy to pre-germination: In autumn and winter, remove dead branches and leaves, bury them deeply or burn them; Combined with winter pruning, cut off the branches of diseases and insects, and cut off the dead fruits of diseases and insects; Flip the tree tray and scrape off rough **, diseased tumors, diseased spots, etc.

Before winter, the branches of the tree are sprayed once with 100 times of 5% bacterial toxin solution, and then the trunk and branches are painted white. Before bud break in spring, the whole tree is sprayed with a lime sulfur mixture of Baumé 5.

2.Germination to flowering stage: when the flower buds are white, in order to control aphids and scale insects, 10% imidacloprid wettable powder 2500 times liquid and 25% chlorpyrifos wettable powder 1500 times liquid can be sprayed; To control the two-spotted leaf mite, spray 2500 times of 20% mitage gel suspension; To prevent and control diseases, 50% carbendazim wettable powder 600 times can be sprayed on the tree; Scrape by hand and apply the scar with 10x 843 healing agent.

3.Fruit expansion period: 15 days after leaf development, 70% mancozeb wettable powder 800 times liquid or 70% methyl tobuzine wettable powder 600 times liquid can be used to prevent and control diseases.

After flowering, aphids and leaf mites were controlled, sprayed with 300 times of matrine aqueous solution or 20% chlorfenapyr emulsifiable concentrate 2000 times; To control borers and peach heartworms, spray 2000 times of fenvalerate emulsifiable concentrate; To control leaf roller borer, spray 1500 times of 25% pyrethuron No. 3 suspension. Manual removal of larvae of longhorn beetles. When the peach tree is sick, the diseased branches excrete a translucent yellow liquid (gum), and the phenomenon of gum bleeding is more serious after rain.

When in contact with air, the flowing glue turns reddish-brown, like jelly, and turns reddish-brown when dried. Diseased areas are susceptible to saprophytic infection, resulting in browning and decay of the cortex and xylem. If it is light, the tree will be weak, and at worst, the whole tree will die.

When the fruit is diseased, the pit secretes a yellow colloid, which overflows the surface of the fruit and hardens the diseased part. In severe cases, it will crack and become inedible.

We must do a good job of prevention, pay attention to the drainage and looseness of the soil, we must pay attention to the density and spacing of planting, choose seeds with good disease resistance, choose different agents according to different pests and diseases, do not mix a variety of agents, you can dilute the agent and water, you can choose foliar spraying or root irrigation.

Apply some fertilizer appropriately, prune in time, keep the trees ventilated, ensure sufficient moisture, ensure light, and find that there are insects on the peach tree, so you must prune it in time.

The first is topdressing to enhance plant resistance, the second is insecticide to avoid the serious impact of pests and diseases on crops, and the third is weeding, increasing ground temperature and promoting plant growth.

1. Prevention and control methods of peach tree leaf shrinkage disease.

Peach tree leaf shrinkage disease mostly occurs after peach tree germination and in low temperature and humid weather. The control method is to spray 3-5 °be stone sulfur mixture to eradicate the fungus source when the flower buds of the peach tree are enlarged and the top buds are just red.

2. Prevention and control methods of peach tree brown rot.

Brown rot is also called sclerotinia sclerotinia and can be prevented by spraying 3-5° of stone sulfur mixture before budding in peach trees. 10 days after flowering, 80% mancozeb 500 times plus "Tianda 2116 fruit tree special type" 1000 times plus Tianda silicone 3000-6000 times mixed spray can effectively control brown rot.

3. Prevention and control methods of peach tree perforation disease.

Peach tree perforation disease mostly occurs in the warm and rainy season in early spring, should be sprayed alternately with 50% sterilization 1000 times, 25% leaf kunning 500 times, 2% spring leimycin 500 times, plus Tianda silicone 3000-6000 times liquid alternately, sprayed once every 15 days, and sprayed 3 times in a row can effectively prevent and control peach tree perforation disease.

4. Prevention and control methods of peach gum disease.

Gum disease is the most common disease in peach trees, and it is also the best to control. The prevention and control method is to scrape off the glue with a blade, and then apply 50 times of 50% sterilizer plus 50 times of "Tianda 2116 Fruit Tree Special Type" to the scar to achieve the control effect.

5. Prevention and control methods of peach tree aphid disease.

Peach tree aphid disease is commonly mixed with 40% dimethoate and water in a ratio of 1:3, applied to the main stem with a brush, the medicine ring is 6 cm wide, wrapped in paper or plastic film after coating, and the effective period is more than 15 days.

Hello, spring peach tree pest control method: early spring fruit tree germination control: sweep orchard weeds, fallen leaves and diseased insect fruits, scrape off warped bark and rough bark, prune diseased, remnant, dead branches, and then concentrated burning or deep burial, and spray tree protection general can effectively control the occurrence and spread of rot disease, inhibit the overwintering breeding eggs of red spiders, and have obvious effects on the prevention and control of powdery mildew, leaf rollers, and scale insects.

In spring, when the water content in the field does not reach 75% to 80%, it must be watered in time to meet the needs of budding, shooting, leaf development and flowering and fruit setting. At the same time, we should also pay attention to the prevention of waterlogging and drainage, and the ditches in the garden must be cleaned to avoid water accumulation in the garden. 15 days before peach germination, spring fertilizer should also be applied in combination with irrigation.

Fertilization is mainly based on fast-acting fertilizers, and nitrogen, phosphorus and potassium are generally used at one time. When seedlings germinate, topdressing is very important, it can promote more and better spring shoots. Peach seedlings must be pruned in time and the best pruning period cannot be missed.

Pruning is to cut 2 3 full and robust buds above the grafting interface of spring planting seedlings, and there will be wound flow during pruning, at this time, it is necessary to use callus antiseptic film to seal the wound to prevent wound flow, and the pruning time ends before germination. Peaches have a particularly high flowering rate, and when the buds grow to the size of peas, they begin to thin the buds, which can save nutrients. 3 to 5 days before pollination, you can thin buds and flowers according to the load, and spray the foliar surface of Zhuang Gua Zhuang Ti Ling liquid after flowering, which can increase the amount of nutrient delivery and self-regulate nutrient matching.

Pest control is a meticulous work, peach tree canker resistance is weak, in addition to strengthening tree management, enhance resistance, before and after germination in spring every year, pay attention to timely spraying insecticides to protect the tree, prevent pests from biting the bark, bud tip, in order to prevent disease invasion. If it has occurred and the disease is serious, cut off the diseased branches and burn them, and then spray them on a large scale to form a protective film, suffocate and sterilize, and prevent the replication of the germs. For root rot and root rot, the method of root irrigation is used to kill the pathogens in the soil, and the method of digging the soil and drying the roots can be used to prevent and control the soil-borne pathogens in the growing season.

Question: The control of the main pests and diseases of peach trees.

Hello, before the peach tree blooms, after the disease is found, it is necessary to spray the drug in time for prevention and control, and it is found that the flow gum needs to be scraped in time, and at the same time, it is necessary to do a good job in the prevention of aphids, and choose 40% oxidized fruit for spraying. Before the plant blooms, it can also be sprayed with a multi-effect frustration solution to promote the differentiation of the flower buds of the plant and promote the fruiting of the peach tree.

<> after entering the autumn, there are significantly fewer pests and diseases of peach trees, mainly including the large green leafhopper that harms the leaves, the leaf miner moth, and the red-necked longhorn beetle that harms the branches.

In areas with a large number of large green leafhoppers, light trapping is carried out by using the phototaxis of adults at the adult stage. and strengthen the pest control of vegetables grown near the old potatoes in the orchard. Before the adults lay eggs for overwintering, the lime slurry is applied to the main branches and trunks of the tree attack hand, which has a certain effect on preventing the adults from laying eggs.

During the oviposition period of adult worms, cypermethrin can be sprayed with 1500-2000 times of liquid. For peach trees with the largest overwintering eggs, especially young trees, the egg masses laid on the trunk can be artificially crushed.

Leaf miner moth can be sprayed and controlled during the adult occurrence period, and 1000-2000 times of 25% larvalurone No. 3 suspension can be used, or 6000 times of 20% boltalurone suspension. Spraying should be carried out in the early stage of occurrence, and the effect of spraying is not good when the damage is serious.

In places where insect droppings are found, the larvae of red-necked longhorn beetles are manually dug up, smoked and poisoned.

In addition, the tea-winged bug has the habit of overwintering in clusters, and in autumn in the empty house near the orchard, the cardboard box and cement paper bag are folded and hung on the wall, which can attract a large number of adults to overwinter in it, and collect and eliminate it before the sting in the following year. Or in the autumn and winter evening, in the orchard in front of the house, behind the house, on the sunny side of the wall to kill the overwintering adults of the tea winged bug.

Main pest control of peach trees in spring:

1. Before the germination of peach trees in early March, spray 50 times of Baume 5 degree stone sulfur mixture or 45 crystal stone sulfur mixture to eliminate overwintering aphids, mulberry scales and other pests, as well as brown rot, perforation disease, and scab scabs.

2. After the peach tree germinates and before flowering, spray 50 phoxanthion 2000 times, 21 kill 4000 times or 10 pyrimloprid 3000 times to control peach aphid. 50 anti-aphid 3000 times liquid control effect is good, anti-aphid insecticidal effect is related to temperature, when the temperature is more than 20, the insecticidal effect is significant, and it is safe for ladybugs, grass ridges and other natural enemies of aphids.

3. After the peach buds germinate, the body of the mulberry shield scale begins to swell, and the spray of Baumé stone sulfur mixture, 80 dichlorvos 1500 times liquid or 50 octathion 1000 times liquid for control.

Fourth, in early April, the first generation of eggs of the yellow-spotted leaf curl moth hatched at the peak of the season, spray 50 trichlorfon 1000 times liquid, 50 octathion 1000 times liquid or 3000 times dichloride 3000 times liquid.

5. Before the peach blossoms are opened, spray 50 proxine 1000 times liquid or 50 Sukelin 1000 times liquid to prevent and control flow gum disease. At the early flowering stage, spray 1000 times of 65 dysen zinc or 1000 times of 70 methyl tobuzin to control peach brown rot.

6. After the peach blossoms open, spray 25 juvenile clothes 1500 times to control leaf miners and leaf rollers; Spray 10 imidacloprid 2000 times to control aphids. Artificial capture of beetles during flowering. Shake the tree in the early morning, and bury it in the soil to destroy it after the insect body falls.

1. Scab disease.

Scab is one of the main diseases of peach trees, mainly occurring from May to July, and is easily infected in rainy and humid environments. It mainly harms fruits and treetops. Every winter, infected treetops and orchards should be cleaned up in time to minimize the source of disease.

Pesticides such as carbendazim, zecze, chlorothalonil and other pesticides should be sprayed during the growth stage of peach trees to reduce the infection rate.

2. Anthrax.

The disease is easy to be infected in autumn when there is a lot of rain, which mainly harms the fruit. When the fruit is infected, water-stained spots appear on the surface, which turn yellowish-brown when enlarged, and finally the fruit rots and falls off. During the management period, fertilizer and water management should be strengthened to improve the disease resistance of peach trees.

In the rainy season, it is necessary to drain water in time and strengthen ventilation. Remove fallen leaves and diseased branches in winter. Peach trees should be bagged in time during the growth period, and chlorothalonil, mancozeb, thiophanate-methyl and other agents can be sprayed during the onset of the disease.

3. Gum-flow disease.

Gum disease is also one of the common diseases of peach trees. The onset starts when the temperature is slightly warmer, mainly harming the branches of the peach tree. When it happens, branches tend to have small protrusions.

Generally, the glue does not flow in the current year, and the small pimple begins to flow in the second year. The disease needs to strengthen fertilizer and water management to improve disease resistance. It has been found that mancozebin and benmyphate wettable powder should be sprayed on the limbs or in seasons, and the drugs should be used alternately to avoid drug resistance.

Fourth, mosaic disease.

Mosaic disease is more harmful to peach trees, mainly through grafting, aphids, mites can also spread the disease. Once the fruit is infected, the growth rate will be slowed, the flesh will become unsweet, and yellow and curly leaves will appear. Diseased plants should be removed as soon as possible, and pest control in orchards should be strengthened.