Which insecticide is best for fruit trees?

Which insecticide is best for fruit trees?

You can search for pesticides used on fruit trees: Zhuhai insecticide aerosol manufacturers. Whichever manufacturer ranks first is good.

What are the pesticides for spraying fruit trees? Ah?

Imidacloprid, acetamiprid to treat aphids polyester, Dimethoate to treat caterpillars

Hope to adopt it

What types of insecticides are used for garden fruit trees?

The first generation is organobenzene, the second generation organochlorine, the third generation organophosphorus, the fourth generation pseudopolyester, and the fifth generation biological pesticide!

What medicine can be used to effectively remove fruit tree insects?

This should be some kind of scale insect. You can use some highly penetrating broad-spectrum insecticide emulsifiable concentrates, such as Lesbon emulsifiable concentrate, deltamethrin, omethoate, malathion, engine oil emulsion, etc.; you can also use special scale insect pesticides such as Guoguang scale insecticides. rule. For details, please refer to the Baidu Encyclopedia entry "Scale Insects".

Can any fruit tree be treated with a pesticide?

Can any fruit tree be treated with a pesticide? No, not necessarily. Some fruit trees do not need any pesticide at all. For example, some fruit trees, such as persimmons, walnuts, chestnuts, and quince trees, need heavier pesticides, such as peach trees, apples, pear trees, apricot trees, etc. Some fruit trees, such as cherries, need lighter pesticides. Jujube, lychee, longan, papaya, etc. Strong pesticides should be used for heavy pesticides, general pesticides should be used for light pesticides, and pollution-free varieties such as phoxim, abamectin, malathion, imidacloprid, etc.

What pesticide is best to spray on fruit trees

It depends on what diseases and pests are being controlled. If it is mealworm, then spray imidacloprid. If it is a disease, it will be determined based on the actual situation

What are the commonly used chemical pesticides for fruit trees

1. Botanical pesticides

1. Soak 1kg of tobacco leaves in 10kg of hot water, rub and remove Then add another 10 kilograms of water and rub. Combine the two rubbing solutions, mix with 10 kg of lime water (containing 0.5 kg of lime) and spray, which can control aphids, thrips, stink bugs, etc.

2. Lubaowei (fruit thinning): Use 0.5% Lubaowei EC 1000 times to 2000 times liquid spray to prevent and control leaf-eating caterpillars, etc.

3. Chili water: 50 grams of chili noodles with 1 kilogram of water, boil for 10 minutes, cool and filter, and spray to prevent aphids.

4. Plant ash: Soak 1 part plant ash in 5 parts water for 24 hours, filter and spray to control aphids.

5. 9281, also known as Green Tree Miracle Doctor and Gudi, is a compound of Chinese and Western medicine and biological fluids. Make a mark on the scar and then apply 4 to 5 times the solution, which will have a better effect in treating rot.

2. Microbial Pesticides

1. Agricultural Resistance 120 Microbial fungicide is a metabolite of actinomycetes. 4% fruit tree special 600-800 times liquid spray can prevent and control apple powdery mildew, apple rust, anthracnose, etc. Applying its 200 times solution to the scars can be a good treatment for rot. Agricultural resistance 120 contains more than 10 kinds of amino acids, which can also play a role in strengthening trees and resisting diseases after application.

2. Spraying 10% polymycin wettable powder 1000 times of polymycin (polyoxymycin, Baolian) can prevent and control apple spot leaf disease; apples from budding stage to flower drop Finally, spraying twice can prevent and cure apple mold heart disease.

3. Liuyangmycin 10% Liuyangmycin EC 1000 times liquid spray can prevent and control spider mites.

4. Bt (Bacillus thuringiensis) bacterial insecticide can be sprayed on trees with Bt emulsion 500 times to prevent leaf-eating caterpillars and heart-eating larvae on fruit trees, plus the effect of 0.1% washing powder Better.

5. Abamectin (Abamectin, Abamectin) is an antibiotic produced by microbial fermentation. Use 1.0% Avicillin EC 4000 times liquid spray to control red spider mites, especially for the difficult-to-control two-spotted spider mites (white spiders), which has a good control effect.

When should fruit trees be sprayed?

After the beginning of spring, the temperature gradually rises. Lime sulfur mixture is still a broad-spectrum, efficient, long residual effect, and low-cost sterilization and disinfection agent. Mites and insecticides, especially when sprayed at higher concentrations before and after fruit trees sprout, have a very significant effect on reducing the base of various diseases and insect pests, reducing annual pesticide use, and reducing costs.

Preparation of lime sulfur mixture: 10 parts of sulfur powder, 7 parts of quicklime, and 60 parts of water. First heat the water, take a small amount of hot water to make a paste of sulfur powder and pour it into the pot to boil. Then slowly add quicklime, increase the firepower, and stir continuously until all the lime blocks are added and boil for 45 minutes (the first 15 minutes). Use high heat for 30 minutes, then use low heat for the next 30 minutes) and cook until the liquid turns soy sauce color, turn off the heat and let cool. After cooling, use Baume specific gravity to measure the exact concentration. It is generally required that apple trees over 3 years old should be sprayed with "Tree Protector General" 100 times liquid + Baume 3 degree lime sulfur mixture during the budding period to clean and disinfect the garden. Awakening from hibernation, stimulates autonomic nerves, prevents various red spiders, scale insects and overwintering eggs. In early April, spray biological pesticides to control aphids and leaf curlers. In early April (after germination), use 0.3% urea solution and potassium dihydrogen phosphate solution, spray 1 to 2 times alternately at intervals of 7-10 days. It helps to strengthen the branches and leaves, promotes the occurrence of new roots, gradually restores the tree's vigor, and ensures long-term vigor. When daily spraying foliar fertilizers or pesticides on fruit trees, adding 100 times of "Tree Protector" solution can inhibit the replication of infectious viruses, resist airborne virus infection, and protect the population and quantity of beneficial animals such as earthworms and natural enemies of fruit tree pests. Therefore, while eliminating pests and diseases, it is crucial to protect natural enemies.

Apple disease prevention and control:

1. Brown spot disease

Chemical control should be carried out in three periods, namely after flower fall (half month before the onset of disease) and during the rainy season. Spray in time before the onset and during the rainy season. Spray 1:3:200 lime multi-dosage Bordeaux mixture + Fruit Stimulant in the early stage of growth. In the later stage, you can also use 50% Tribacterate 600 times, 50% Carbendazim 800 times, and 50% Thiophanate methyl 1000 times. times, 65% Zinc, 500 times + Melon and Fruit Stimulant for control. When spraying in the rainy season, 2000-3000 times of adhesive should be mixed. Early defoliation of apples mainly manifests as a mixture of brown spots and gray spots. It is also essential to strengthen soil, fertilizer and water management and improve the tree's disease resistance.

2. Spotted leaf falling disease

Spotted leaf falling disease generally begins to show symptoms in late June, with peak incidence from late July to early August. Early spring rains cause early onset of disease, and autumn rains often cause severe disease. It stopped happening in early October. To prevent and control apple spot leaf disease, attention should be paid to chemical control. Continuously spray 50% promethain wettable powder 1000 times + melon and fruit streptozolin or 70% mancozeb wettable powder 500 times + melon and fruit starting from after flowering. Zhuangdi Ling, or 10% polyoxymycin 1200 times + Guangdi Ling, or 40% ethyl aluminum phosphate 200 times + Guangdi Ling, or 70% ethyl manganese 500 times + Guangdi Ling. Lime-rich Bordeaux mixture also has a good control effect. Now that we have entered the mid-autumn season, new infections of various early defoliation diseases will gradually stop. However, for orchards with severe disease this year, fallen leaves should be cleaned in time, diseased branches should be cut off and buried deeply to eliminate the source of the disease and reduce the incidence next year.

How much time can be spent spraying pesticides on fruit trees in April

3. Intercropping in kindergartens

Within 1-2 years of planting fruit trees, when the rows are not sealed, Crops can be interplanted to make full use of land resources and use short crops to grow long crops. Interplanting crops must meet the following requirements: (1) short growth period; (2) staggered periods that require a lot of fertilizer and water with fruit trees; (3) short plants that do not affect body lighting and avoid vines and tall crops; (4) no interaction with fruit trees **Same pests and diseases; (5) Interplanted crops have higher economic value.

4. Pruning and pruning of fruit trees

1. Pruning and shaping of young fruit trees. At present, dwarf and high-yield cultivation techniques are used in production, and the emphasis is on cultivating the tree shape of young fruit trees. For evergreen fruit trees, thin branches are used to maintain the shape, so that the fruit trees are ventilated and light-transparent, and the branches are evenly distributed; for the production of deciduous fruit trees such as peaches, plums, and pears, "Y"-shaped and cup-shaped tree shapes are often used, and for pears, inverted tree shapes are often used. "Herringbone" shaped pull branches or double-layer fence shaping.

2. Pruning and shaping of adult fruit trees. Prune after picking the fruit, use fruit shears to remove diseased branches, residual branches, dead branches and weak branches. Winter pruning: Fruit tree pruning begins when deciduous fruit trees enter dormancy. Pruning of evergreen fruit trees should be carried out in spring before the shoots sprout and when the old leaves are about to fall off.

5. Orchard fertilizer and water management

1. Apply basal fertilizer. Basal fertilizer is often applied to fruit trees immediately after picking fruits, and for high-yielding or late-maturing varieties, basal fertilizer is applied before picking fruits. The specific time is from September to October in autumn. The soil in the entire garden is plowed 20-30 cm deep to remove weeds and debris in the garden and destroyed together with the pruned branches.

Dig a trench 30 cm deep and 20 cm wide outside the tree tray, and apply 2,000 kilograms of organic fertilizer per mu and 100 kilograms of special fertilizer for fruit trees.

2. Fruit tree coverage. Combined with fertilization, cover the fruit tree tray with 5-10 cm thick straw; for fruit trees with poor light transmittance, which have higher requirements for fruit coloring, the tree tray can be covered with silver reflective film.

3. Top dressing and irrigation. Top-dressing fertilizer can be applied during the critical growth period of fruit trees based on the amount of fruit, tree vigor and winter fertilization amount. Before or after flowering, apply 25-50 kilograms of special fertilizer for fast-acting trees per mu; during the fruit expansion period, apply 50-100 kilograms of special fertilizer for fast-acting trees per mu, and add enough water. After fruit picking, irrigation in dry areas in autumn and winter is combined with basal fertilizer application to promote the decomposition of fertilizer and meet the later growth of fruit trees.

6. Flower and fruit management

1. Thin vegetables and fruits. Artificial flower and fruit thinning can start with re-pruning before flowering to adjust the amount of flower buds, and thinning of vegetables and young fruits can be carried out after flowering. Fruit thinning should be carried out as soon as possible after the first physiological implementation of young fruits. According to the number of fruits per plant, thin out the weak fruits in the inflorescence, thin out the tip fruits, weak branch fruits, small fruits, diseased fruits, insect fruits and deformed fruits, and retain the strong fruits.

2. Fruit bagging: Use double-layer bags of whole wood pulp, carry out it as soon as possible after the fruit is set, and spray insecticides and fungicides once, and complete the bagging work within 15 days, 30 days before harvesting the fruit Remove the bagging in about a day.

7. Pest and disease control

1. Manual control. Pick up fallen fruits, cut off diseased and insect-infested branches, dig the soil deeply, remove weeds and debris for centralized destruction; use the living habits of various pests to catch and trap various pests in a timely manner; bagging.

2. Chemical prevention and treatment. Use high-efficiency, low-toxicity, low-residue pesticides or biopesticides to prevent pests and diseases during their peak period. Such as broad-spectrum fungicides, mancozeb, chlorothalonil, carbendazim, etc., broad-spectrum insecticides: Kungfu, trichlorfon, paclitaxel, Bt, etc. The last application of chemical pesticides is required to be 30 days from harvest time.

3.3 Hole storage of fertilizer water

The "hole storage of fertilizer water" technology was proposed in response to the serious lack of investment in fertilizer and water management in white-water dryland orchards. It is an important technology to be promoted in the future. measure. It has the advantages of low cost, simplicity and ease of implementation, especially for sparsely planted orchards after reshaping and thinning, and has more promotion value.

This technology is an effective measure to implement "smart fertilization" in orchards that have completed "major transformation". The basic starting point is to use limited fertilizer and water intensively to form several fertilizer and water "enrichment areas" in the concentrated distribution areas of fruit tree roots to improve fertilizer and water utilization efficiency.

In an arborized orchard with sparse planting (for example, 22-33 trees per acre), dig 100 cm long, 50 cm wide, and 50 cm deep on both sides under the outer edge of the crown before and after budding in spring. of ditch holes (44-66 per mu), bury 10Kg of straw per plant, apply 25-50kg of high-quality farmyard manure (mix the farmyard manure with topsoil before applying), and apply 0.75-1.0kg of chemical fertilizer (urea, diammonium, Potassium sulfate (approximately 1/3 each), apply fertilizer to a depth of 10-15cm, water 50kg per trench, and then cover with mulch. During the growing season (critical period of flower bud differentiation - fruit enlargement period), topdress once and apply 0.75-1.0kg of chemical fertilizer (mainly phosphorus and potassium, with a small amount of nitrogen).

Every year from now on, combine the four important water-demanding periods in the growth of apple trees (budding to flowering, long period of vigorous growth of new shoots, rapid expansion of fruits...

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