Which insecticide is best for fruit trees?

Which insecticide is best for fruit trees?

Can search for pesticides used on fruit trees: Zhuhai insecticidal aerosol manufacturer, which manufacturer ranks first,

What pesticides are sprayed on fruit trees?

Imidacloprid, acetamiprid, polyester to control aphids and dimethoate to control caterpillars.

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What kind of insecticide is used for garden fruit trees?

The first generation is organic benzene, the second generation is organic chlorine, the third generation is organic phosphorus, the fourth generation is fake polyester, and the fifth generation is biological insecticide!

What medicine can effectively remove fruit tree pests?

This should be some kind of scale insect. Some broad-spectrum pesticide emulsifiable concentrate with strong permeability can be used for control, such as Lethbone emulsifiable concentrate, deltamethrin, omethoate, malathion, engine oil emulsion and so on. You can also use special chemicals for scale insects, such as Guoguang scale insects. For details, please refer to Baidu Encyclopedia entry "Scale Insect".

Can any fruit tree use pesticides?

Can any fruit tree use pesticides? Not necessarily. Some fruit trees don't need any pesticides at all, such as persimmons, walnuts, chestnuts and chestnuts. Some fruit trees need heavier pesticides, such as peach trees, apples, pears and apricots, while others need lighter pesticides, such as cherry, jujube, litchi, longan and papaya. Heavy pesticides should use strong drugs, light pesticides should use general drugs, and there are pollution-free varieties of drugs, such as phoxim, avermectin, malathion, imidacloprid and so on.

What pesticide is good for spraying fruit trees?

It depends on what pests and diseases are prevented. If it is Tenebrio molitor, then imidacloprid should be sprayed. If it is a disease, it should be decided according to the actual situation.

What are the chemical pesticides commonly used in fruit trees?

One. botanical insecticide

1. Soak 1 kg tobacco leaves in10kg hot water, take them out and put them in another10kg clean water for kneading. The two kinds of bath liquids are mixed and sprayed with 10 kg lime water (including 0.5 kg lime) to control aphids, thrips and bedbugs.

2. Spraying 0.5% Lubaowei EC1000 ~ 2,000 times solution to control leaf-eating caterpillars.

3. Add 1 kg water to 50 grams of pepper water and pepper noodles, cook for 10 minute, cool, filter and spray to prevent aphids.

4. plant ash 1 plant ash was soaked in 5 parts of water for 24 hours, filtered and sprayed to control aphids.

5.928 1, also known as Dr. Green and Di Jun, is composed of Chinese and western medicines and biological fluids. Brushing liquid for 4 ~ 5 times after scribing on the diseased scar has a good effect on the treatment of rot.

Second, microbial pesticides.

1 and nongkang 120 microbial fungicides are metabolites of radioactive bacteria. 4% special spray for fruit trees with 600-800 times of liquid can control powdery mildew, rust and anthracnose of apple. 200 times of its solution can be applied to the diseased scar to treat the rot well. Nongkang 120 contains 10 kinds of amino acids, which can also play a role in strengthening trees and resisting diseases after application.

2. polyoxin (Polycyclic Serine, Baolian) 10% polyoxin Wettable Powder 1000 times liquid spray can control apple leaf spot defoliation; Spraying apple twice from bud stage to after flowering can prevent apple mold heart disease.

3. liuyangmycin 10% liuyangmycin EC 1000 times spray can control red spider.

4.Bt (Bacillus thuringiensis) bacterial insecticide can be sprayed on trees with 500 times of Bt emulsion, which can control leaf-eating caterpillars and larvae of fruit trees, and the effect is better with 0. 1% washing powder.

5. Antibiotics produced by microbial fermentation of avermectin (avermectin, acaricide). Spraying 1.0% avermectin EC with 4000 times solution has good control effect on red spider, especially on tetranychus urticae (white spider) which is difficult to control.

When do fruit trees spray pesticides?

After beginning of spring, the temperature has gradually increased, and the mixture of sulfur and stone is still a broad-spectrum, efficient, long-lasting, low-cost bactericidal and acaricidal pesticide, especially when sprayed with high concentration before and after the germination of fruit trees, which has a very significant effect on reducing the base number of various pests and diseases, reducing the annual dosage and reducing the cost.

Boiling of sulfur mixture: sulfur powder 10, quicklime 7 and water 60. First, heat the water, take a small amount of hot water to make the sulfur powder into a paste, then pour it into a pot to boil, then slowly add quicklime to increase the firepower, and keep stirring until the lime blocks are added, then cook for 45 minutes (with strong fire for the first 15 minutes and warm fire for the last 30 minutes) until the liquid turns soy sauce color, and turn off the fire to cool. After cooling, the precise concentration is measured by Baume's specific gravity. Generally, apple trees over 3 years old are required to spray 100 times of "Shuguan bacteria" solution and Bomei 3-degree sulfur mixture for garden cleaning and disinfection, which not only kills bacteria and insects, but also shocks the "gene alarm clock" of fruit trees to remind them to wake up from hibernation in time to prevent and control all kinds of red spiders, scale insects and overwintering eggs. At the beginning of April, biological pesticides were sprayed to control aphids and leaf rollers. In early April (after germination), 0.3% urea solution and potassium dihydrogen phosphate solution are alternately sprayed 1 or twice, with an interval of 7- 10 days, so as to strengthen branches and leaves, promote new roots, gradually restore tree vigor and ensure long-term vitality. Adding "Shujiangjun" 100 times solution to daily spraying foliar fertilizer or pesticide on fruit trees can inhibit the replication of infectious viruses, resist the infection of airborne viruses, and protect the population and quantity of beneficial animals such as earthworms and natural enemies of fruit tree pests. Therefore, it is very important to protect natural enemies while eliminating pests and diseases.

Apple disease control:

The first is brown spot.

Chemical prevention and control should be done in three stages, that is, spraying drugs in time after falling flowers (half a month before onset), before rainy season and before rainy season. Spraying 1: 3: 200 lime Bordeaux solution+Guaguozhuangdiling at the early growth stage and spraying at the late growth stage, or using 50% carbendazim 600 times solution, 50% thiophanate-methyl 65438 times solution +0000 times solution, 65% zineb 500 times solution+Guaguozhuangdiling for control. When spraying medicine in rainy season, 2000-3000 times of adhesive should be mixed. The early defoliation of apple mainly shows the mixed invasion of brown spot disease and gray pheasant disease. It is also necessary to strengthen the management of soil, fertilizer and water to improve the disease resistance of trees.

Second, speckled deciduous leaves

Leaf spot disease usually begins in late June, and the peak period is from late July to early August. Early spring rain, serious illness in autumn rain. 65438+ stopped at the beginning of 10. Attention should be paid to chemical control of tobacco brown spot. After flowering, spray 50% chlorpheniramine WP 1000 times solution+Guaguozhuangdiling or 70% mancozeb WP 500 times solution+Guaguozhuangdiling, or 10% cycloserine 1200 times solution+Guaguozhuangdiling or 40% ethyl phosphate 20 times solution continuously. Bordeaux mixture rich in lime also has a good control effect. At present, it has entered the Mid-Autumn Festival, and all kinds of early deciduous diseases will gradually stop new infections. However, for orchards with serious diseases this year, fallen leaves should be cleaned in time, diseased branches should be cut off, and concentrated deep burial should be carried out to eliminate the source of the disease and reduce the incidence rate in the coming year.

How hard can you spray pesticides on fruit trees in April?

Third, nursery intercropping.

Within 1-2 years after fruit trees are planted, when they are not closed, they can interplant crops and make full use of land information to grow in a short time. Intercropping crops should meet the following requirements: (1) Short growth period; (2) Staggered with fruit trees in the period when they need a lot of fertilizer and water; (3) The plant is short, which does not affect the illumination of crops and avoids vines and tall crops; (4) The fruit trees are free of pests and diseases; (5) intercropping crops has high economic value.

Four, fruit tree pruning

1, pruning and shaping of young fruit trees. At present, dwarfing and high-yield cultivation techniques are adopted in production, and young fruit trees focus on cultivating tree shapes. Evergreen fruit trees are cultivated by thinning branches, so that the fruit trees are ventilated and transparent, and the branches are evenly distributed; For deciduous fruit trees such as peaches, plums and pears, Y-shaped trees and cup-shaped trees are often used, and pear trees are shaped like inverted herringbone branches or double hedges.

2. Pruning and shaping of adult fruit trees. Prune the fruit after picking, and cut off the diseased branches, residual branches, dead branches and weak branches with fruit scissors. Pruning in winter: Deciduous fruit trees enter dormancy and begin pruning. Pruning of evergreen fruit trees will be carried out before the spring shoots are pulled out and the old leaves fall off at most.

Five, orchard fertilizer and water management

1, apply base fertilizer. Fruit trees often apply base fertilizer immediately after fruit picking, and apply base fertilizer before fruit picking for high-yield or late-maturing varieties. The specific time is September-65438+1October in autumn, and the whole garden is deeply ploughed for 20-30 cm, and weeds and sundries in the garden are removed and destroyed together with pruning branches. Trenching outside the tree tray is 30 cm deep and 20 cm wide, and 2000 kg of organic fertilizer and special fertilizer for fruit trees are applied per mu 100 kg.

2. Fruit tree coverage rate. Combine with fertilization, covering 5- 10 cm thick straw in that fruit tree tray; Fruit trees with poor light transmission in the tree hall have higher requirements for fruit coloring, and silver reflective film can be covered on the tree tray.

3. Top dressing and irrigation. According to the amount of fruit, tree potential and winter fertilization, topdressing can be carried out in the critical period of fruit tree growth. Topdressing before or after flowering, applying 25-50kg of special fertilizer for quick-acting fruit trees per mu; During the fruit expansion period, apply 50- 100 kg special fertilizer for quick-acting fruit trees per mu, and fill it with enough water. Irrigation combined with base fertilizer after fruit picking in autumn and winter in arid areas can promote fertilizer decomposition and meet the later growth of fruit trees.

Six, flower and fruit management

1, hydrophobic fruits and vegetables. Artificial flower thinning and fruit thinning can start with re-cutting before flowering to adjust the number of flower buds, and after flowering, vegetables and young fruits can be thinned. Fruit thinning should be carried out as soon as possible after the first physiological implementation of young fruits. According to the fruit yield per plant, the weak fruit in inflorescence, the top fruit, weak branch fruit, small fruit, diseased fruit, insect fruit and abnormal fruit are thinned out, and the strong fruit is retained.

2. Fruit bagging: Double-layer bags of whole wood pulp should be selected as soon as possible after fruit setting, and pesticides and fungicides should be sprayed once. Bagging should be completed within 15 days, and bagging should be removed about 30 days before fruit harvesting.

Seven, pest control

1, artificially controlled. Picking fruits, cutting branches of pests and diseases, digging deep into soil, removing weeds and sundries and centrally destroying them; Make use of the living habits of various pests to kill and trap them in time; Bagging material

2. Chemical control. At the peak of pests and diseases, pesticides or biological pesticides with high efficiency, low toxicity and low residue are used to control pests and diseases. Such as broad-spectrum fungicides, mancozeb, chlorothalonil, carbendazim, etc. , and broad-spectrum pesticides: Kung Fu, Trichlorfon, Chlordecone, Bt, etc. The last use of chemical pesticides is required to be 30 days after harvest.

3.3 point storage fertilizer water

The technology of "storing fertilizer and water in caves" is put forward in view of the serious shortage of investment in fertilizer and water management in Baishui dryland orchard, and it is an important technical measure to be popularized in the future. It has the advantages of low cost and simplicity. Especially for the transformation and thinning of arboretum, it has more popularization value.

This technology is an effective measure to implement "smart fertilization" after the "great transformation" of the orchard. Its basic starting point is to concentrate the limited fertilizer and water, and form a number of fertilizer and water "enrichment areas" in the concentrated distribution area of fruit tree roots, thus improving the utilization efficiency of fertilizer and water.

Arbor orchards (such as planting 22-33 plants per mu), before and after spring germination, dig ditches and holes (44-66 plants per mu) with a length of 100 cm, a width of 50 cm and a depth of 50 cm on both sides of the outer edge of the crown, and each plant is buried with 10 kg of straw, and 25-50 kg of high-quality farm manure is applied. Apply 0.75- 1.0 kg of chemical fertilizer (urea, diammonium and potassium sulfate are about 1/3 each), the depth of chemical fertilizer application is 10- 15 cm, each ditch is watered with 50 kg of water, and then covered with plastic film. In the growing season (the key period of flower bud differentiation-fruit expansion period), topdressing is performed once, and the plant is applied with 0.75- 1.0kg of chemical fertilizer (mainly phosphorus and potassium, with a little nitrogen).

After that, the four important water demand periods of apple tree growth (germination to flowering period, new shoot flourishing period and rapid fruit expansion period) are combined every year. ......

The fruit trees at home have this disease. Who knows what disease it is and what insecticide to use?

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