1 Biological pesticides for controlling leaf insect pests

The following medicinal agents can be used for the prevention and treatment of moths such as moths, poison moths, caterpillars, yellow moths, and tussah moths:

1.1 Insect Growth Regulation (Bionics, Pesticides)

Diflubenzuron series insecticides are new insect growth regulators whose insecticidal mechanism of action is to inhibit chitin synthesis in insect epidermis. Diflubenzuron is mainly a stomach poison, but it can also invade the epidermis of insects. It has special mechanism of action for prevention and control of leaf insect pests, good control effect, long residual effect period, low prevention and control cost, resistance to rainwater showering, and pest resistance to drug resistance. The advantages of plants, humans and animals, natural enemies and environmental security.

1) Diflubenzuron No. 1. Diflubenzuron 1 is also known as diflubenzuron, enemy killing spirit. It is stable in acidic and neutral media and easily decomposed in alkaline media. Low toxicity to humans, livestock, birds, fish, etc. Preparations are 20% diflubenzuron suspension and 25% Trifluralin WP.

The main effect of diflubenzuron 1 is stomach poisoning and contact toxicity, so that the larvae cannot form new epidermis when the skin is molted, and the parasites become deformed and die. It has special effects on Lepidoptera pests and is also effective against many pests such as Coleoptera and Diptera. For control of armyworm, yellow thorn moth, peach hawk moth, and date zander, spray with an effective dose of 10-15g (diluted 2000 times for water) per 667m2; for control of Spodoptera litura, use an effective dose of 2-4g for 667m2 Water is diluted 15000 times or so).

The precautions for using diflubenzuron 1 are basically the same as diflubenzuron.

2) Diflubenzuron No. 3. Diflubenzuron 3, also known as Suurea 1 or diflubenzuron. Pure product is white crystal. The performance of light and heat is relatively stable, and the alkali and strong acid are easily decomposed. Stored at room temperature is relatively stable. It belongs to non-toxic pesticides and is safe to natural enemies. The formulation was a 25% diflubenzuron suspension.

Diflubenzuron 3 is an insect growth regulator. The agent is mainly stomach poisoning, but also some insect larvae will soon die because they can not molt. The larvae no longer take food after taking the medicine. Generally, the larvae begin to be disabled within 3 days after spraying and reach a peak of disability after 5 days. Because the adult does not molt, the agent is not effective against adults.

Diflubenzuron 3 has special effects on Lepidoptera pests. For the control of pests such as the big moth, the Chinese date, and the yellow-spotted moth, 2000-2500 times spray can be used. Dilution of 800-1000 times of water to control leaf miners and other effects is very good.

Diflubenzuron 3 has a sedimentation phenomenon. When used, it should be shaken first, then diluted with water. Before the third instar larvae, the application of pesticides has a high control effect. In the larvae, the application efficiency is low, so the dosage should be increased. In addition, it should be stored in a cool place.

In order to give full play to the insecticidal effect of diflubenzuron and achieve the desired control effect, we must seize three steps: First, accurately capture the timing of spraying. It is advisable to use the drug before the larvae hatch to the third instar of the larvae and try to spray them within one week. The second is accurate dispensing. Ensure that the diluted active ingredient does not decrease. Completely dilute the sediment from the bottom of the vial. It's best to open the medicine bottle to cleanse the reagents. Third, spraying evenly and thoughtfully. Due to the lack of systemic absorption of these agents, it is important to ensure that the tree is uniformly and topically applied both inside and outside the spray.

1.2 Bacterial pesticide BT emulsion

The BT emulsion is a Bacillus thuringiensis microbial pesticide and is a Bacillus bacterial insecticide. Its main insecticidal ingredient is parasporal crystals. Preparations are Bacillus thuringiensis wettable powder and BT emulsion (containing 0.2% pyrethroid insecticide).

The pharmaceutical agent has become a major biopesticide widely used in various countries of the world. The pathogenic mechanism of BT emulsions is that the BT insecticidal toxin causes the diseased gut to die. The leaf-feeding pests eat the leaves with BT emulsion, causing paralysis, food inactivity, unresponsiveness, and diarrhea, and then a black ring appears in the abdomen and gradually expands to the whole body. Finally, the poisoning causes death, turns black, and rots, hangs upside down or dies in leaves and Branches.

BT has pathogenic and poisonous effects on a variety of Lepidoptera larvae and leafhoppers, such as peach borer, yellow thorn moth, date borer, and cotton bollworm, etc., and is mainly used to control larvae of lepidopteran pests. Use chemical pesticides 2-3 days in advance. Good control effect against young larvae of pests. High temperature weather application is best. When used mainly spray, use a concentration of 500-800 times (per 667

M2 medication 100-150g). The worms that were killed by Bacillus thuringiensis and blackened and rotten were collected, packed in gauze bags, rubbed in water, and then sprayed with 50-100 liters of water per 50 g of larvae. The pest control effect was also very good.

The medicament is a wettable powdered biological preparation and should be kept in a cool and dry place below 25°C to prevent exposure and moisture. This agent is an ideal agent for protecting humans, animals, natural enemies, plants, and the environment. Pay attention to the use in the environment above 20 °C, 27-32 °C is the optimum temperature; the liquid is neutral (pH 7.5), can not be mixed with alkaline pesticides, systemic organophosphate insecticides or fungicides. Use in young larvae, spraying evenly, and re-spray after rain.

1.3 Phytochemical pesticides

1) 1% cigarette smoke oil. 1% sibutramine oil is a multiple Chinese herbal plant lice insecticide. It has a broad insecticidal spectrum and can quickly kill insects that are susceptible to insecticide. It has good degradation, no residual toxicity, safe use, no pollution, and no pollution. Plants have properties such as stimulating growth. Dilute 1500-3000 times spray on water.

2) Baicao 1 (0.6% matrine lactone solution). Baicao No.1 is a botanical pesticide produced by crushing and dissolving various plants and Chinese herbal medicines such as Boxinupuzi, Sophora alopecuroides, and adding additives and penetrants. The main mechanism of action is contact toxicity, which is supplemented by stomach poisons and has a promoting effect on plants. It can be used to control various kinds of aphids and leaf-feeding pests. It is diluted 1000-2000 times for water and the control effect is above 98%. The pesticide belongs to a new generation of plant pesticides with low toxicity, low residue, and no harm to humans, animals and the environment.

3) Hundred insecticides (1.2% niacin emulsifiable concentrate). Hundred insecticides are plant pesticides. The active ingredients are nicotine and matrine. They have stomach poisoning, contact and fumigation effects on insects. Low toxicity to humans and animals, no pollution to the environment, no harm to medicine. It can dilute water 800-1000 times to control aphids such as sucking mouthparts pests and leafhoppers, and prevents young lepidopteran larvae (before the third instar) to use 2000 times liquid.

4) Fruit and vegetable net (0.5% Alizarin EC). The net of fruits and vegetables is a plant pesticide. The drug is highly effective, safe, low-toxicity, low-residue and does not cause phytotoxicity. At the same time with stomach poisoning, contact and a certain antifeedant effect, but mainly to refuse to eat, stomach poisoning. Diluted 800-1200 times of water spray, can prevent insects, moths, moths and other leaf-eating pests, control effectiveness of up to 98%, second only to pyrethroid insecticides.

2 Biopesticides for prevention and treatment of sucking pests

2.1 Fungal pesticides

The dermatophyte is a new fungal biopesticide. The main insecticidal component of the dermatophyte is an ester-soluble sterol compound, which has low toxicity and rapid knockdown of the aphids, and also kills leafhoppers, does not harm beneficial insects such as grasshoppers and ladybugs, and has an effect on the growth of plants. . Use a concentration of 200-300 times.

2.2 Antibiotic series pesticides

1) Qi Qisu (1.8%, 0.9%). Chilophosin, also known as efford, is a broad-spectrum and highly effective insecticide. The active ingredient of this agent is abamectin. Currently widely used at home and abroad, it can effectively prevent and treat numerous herbivorous species and other pests that are insensitive or resistant to commonly used pesticides, such as leaf miners, moths, ulnars, venom moths, and wood lice. Leaf and sucking pests. Gastrointestinal and contact toxicity to ticks and other pests. Compared with chemical pesticides, the pesticide has a rapid recovery of predatory and parasitic beneficial insects after application, which is beneficial to ecological balance. Dilute 15000-20000 times with water to control spider mites. It is a highly effective acaricide (approx. 20ml for each 667m2 of 1.8% stock solution). Dilution of 3000-5000 times water to water can kill leaf-feeding pests and it is reported that nematodes can also be killed.

The agent is easily decomposed by oxygen, light, etc., leaving no residues, and harmless to humans, animals, plants, natural enemies, and the environment.

2) 10% Liuyangmycin water agent. Liuyangmycin is a kind of acaricide. It is a new type of antibiotic agent. It is sprayed with 800-1000 times liquid. The effect is equivalent to that of chemical pesticides such as dicofol, chlorpheniramine, quinone, etc. The drug efficacy period can reach 15-30 days.

3) Huaguangmycin (2.5% powder). Huaguangmycin is a new type of antibiotic acaricide. It does not pollute the environment, has no residue in air and soil, and has a protective effect on beneficial insects. It is one of the better agents for the protection of natural enemies. The effect of stimulating the growth of plants, the use of a concentration of 600-800 times the water spray, the best effect of two consecutive use within 7-10 days.

2.3 Plant pesticides

There are escort birds (0.5% veratrine alcohol) in plant pesticides. The medicament is a vegetable insecticide mainly composed of veratrine alcohol. For all kinds of locusts, especially those susceptible to aphids, they have the best effect, and they also have a certain effect on leafhoppers. Use a concentration of 800-1000 times.

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