Molecular structure diagram of the enemy insect
Other names: insect quick kill, good luck, sharp more killing, lithophore net, triclosone, poison bully, metridronate, etc.
Main dosage forms: (1) Single dose: 80%, 90%, 95% crystals, 2.5%, 5%, 6% powder, 50%, 80%, 90% soluble powder, 25% oil, 30%, 40%, 50% emulsion, 50%, 90% wettable powder diopteranol powder. (2) Mixture: 40%, 60% enemy. Horse emulsion, 50% diagonal. Octyl thiophos emulsion, 40% Lego. Dioptera emulsion, 40% propylene bromide. Dichox emulsion.
Toxicity: Low toxicity (low toxicity to fish and bees).
Mechanism of action: After the agent enters the insect body, it causes excessive nerve impulses, and finally causes physiological abnormalities and death.
Features:
Dimethod is a highly efficient, low-toxic, broad-spectrum, organophosphorus insecticide that can become dichlorvos in weak lye, but is unstable and quickly decomposes and fails. The main effect on pests is gastric toxicity, which has both touch killing effect and a certain osmotic effect on plants, but no systemic conduction effect.
The insecticidal effect of the enemy insect is not mainly determined by its own virulence, but in the body of the pest, the enemy insect can be transformed into a predator that is several times greater than its virulence, so that the pest poisons and dies. However, in the human and animal bodies, only a small part of the enemy insects are transformed into predators, most of which are quickly decomposed into non-toxic compounds, and can be quickly excreted from the body by urine, so the toxicity of the enemy insects to humans and animals is very low.
Identification points: The simple characterization of dichloride can be precipitated by silver chloride. Because the diphtheria contain chlorine and are hydrolyzed in the alkaline solution, the addition of silver nitrate solution to its alkaline solution can generate a white silver chloride precipitate. According to the appearance of the product, odor and solubility in water and other phenomena are comprehensively analyzed, preliminary identification is carried out. When purchasing pesticides, it should be noted that 80% of the soluble powder of dimethods is white or off-white powder, and 25% of the oil agent is yellow-brown oily liquid; Confirm the generic name of the product; Check whether the packaging and labeling are clear and complete; Check the "three certificates" on the label (referring to the pesticide production license or pesticide production approval documents, pesticide standards and pesticide registration certificates)." "Three certificates" are issued in units of products, that is, each pesticide product, the same pesticide products are produced by different manufacturers, each has its own "three certificates". Whether it is complete, the original drug of the enemy worm should obtain a production license (XK), and other single doses and compound preparations of the enemy worm should obtain the pesticide production approval document (HNP); Check the expiration date and production date of the product on the label, the pesticide product is valid for 2 years.
Dimethoates are often mixed with insecticide components such as cypermethrin, cypermethrin, and octylthion to produce compound insecticides.
Application: In vegetables, it is mainly used to control cotton bollworms, armyworms, grass borers, cabbage insects, small cabbage moths, twill moths, thorn moths and other chewing mouth organ pests, and the control effect of pests and aphids is poor. It can be used for spraying, spraying powder, root irrigation, soaking seeds, preparing poisonous soil or poisonous bait, etc.
(1) Spray
Pest
Control of cabbage moth, kale moth, twill moth, per mu (1 mu = 666.67 square meters, the same below) with 90% crystalline insect or 80% enemy insect soluble powder 80 to 100 grams, mixed with water 60 to 75 kg (that is, 1000 ~ 1500 times liquid) spray.
To control the yellow curved stripe jumping beetle, ants, etc., use 90% crystal enemy insects 800 to 1000 times liquid to irrigate or spray.
To control the green worms, one week after the peak of adult spawning, spray with 90% crystallized dimethodium 1500 times liquid spray, or 40% diomy worm emulsion 500~750 times liquid spray. Control of small land tigers, mastered in the peak of 2 years, with 90% crystallized enemy insects 800 times liquid spray. defend
Cure soybean bridge worms, armyworms, bean turnips, grass borers, beet weevils, per acre with 80% dimethods soluble powder 150 grams mixed with water 50~75 kg spray.
For the control of cotton bollworms and leafhoppers, 80% dichlorvos soluble powder per mu is 150 to 200 grams, and 75 kg spray is mixed with water.
Control all kinds of scarab adults, large gray weevils, etc., with 80% dichlorvos soluble powder 1000 times liquid spray.
(2) Preparation of poisonous bait
Caddisflies
Control tigers and caddisflies, use 50% enemy insect wettable powder 80 to 100 grams per acre, first use a small amount of water to dissolve the enemy insects, and then mix well with 4 to 5 kilograms of stir-fried cotton kernel cake or rapeseed cake, wheat bran, etc., and can also be mixed with chopped fresh grass 20 to 30 kilograms to make poisonous bait, and sprinkled on the surface of the vegetable field in the evening to trap the insects. Or use 6 parts of sugar, 3 parts of vinegar, 1 part of liquor, 10 parts of water, 1 part of 90% of the original drug of the enemy, mix it into sweet and sour venom, put it into a basin and place it in the field.
To control crickets, use 50 grams of soluble powder of 50% dimethodiae, stir-fry 2 kg of fragrant wheat bran, and apply it in the field to a hot evening with good effect.
To control adult insects such as onion land plant flies and gray ground breeding flies, 1 part of sugar, 1 part of vinegar, 2.5 parts of water, and a small amount of 90% of the original drug of the enemy insects, mixed with sweet and sour venom, add a small amount of sawdust in a large bowl, load it with venom, and cover the field at night and open the lid during the day.
(3) Poisonous soil
grubs
To control grubs, use 2.5% dimethoate powder 2 kg per acre, mix 10 kg of fine soil, mix well to make poisonous soil, after making a nursery bed, first sprinkle a layer of poisonous soil under the bed, and then lay seedling nutrient soil.
To control garlic maggots, use 1.5 kg of 2.5% dichlorvos powder per acre, evenly mix into the manure soil, and then apply it into the garlic ditch.
(4) Irrigation of roots
To control grubs, in the peak of egg hatching to the beginning of the first instar, irrigate the roots with 800 times liquid liquid with 50% dimethoate emulsion, or irrigate the roots with 80% dimethodium soluble powder 1000 times liquid, or irrigate the roots with 30% diphthalm emulsion 500 times liquid, which can kill the rhizosphere larvae.
To control leek maggots, you can use 90% crystallized enemy worms 500 times liquid to irrigate the roots, on the side of the leek root to pick up the soil depth of 3 to 4 cm, the liquid medicine is packed in a sprayer to remove the nozzle, and fill the liquid into the shallow ditch.
To control the larvae of cucumber melon, irrigate the roots with 90% crystalline dimethods 1500-2000 times liquid.
To control earthworms, use 80% dimethodium soluble powder 1200 times liquid, water the roots of plants, and use 250-300 kg of liquid per mu.
Control of yellow-curved stripe jumping nail larvae, leek leaf beetle larvae, great ape leaf insect larvae, root maggots (larvae of gray ground seeds flies, radish ground seeds flies, onion ground seeds flies, etc.), garlic green round jumpers, etc., with 90% enemy insects original drug 1000 times liquid irrigation roots.
(5) Spray powder
For the control of ground maggots (seed flies, shallot flies, radish flies, small radish flies), in the adult and hatching larval stages, 1.5 to 2 kg of powder per mu with 2.5% dimethodium powder. Control of planthoppers, leafhoppers, vegetable borers, green worms, etc., with 2.5% dimethodium powder 1.5 to 2 kg spray powder per mu.
To control leek maggots, 2.5 kg of 2.5 kg of dichlorvos powder per acre, spray around the leek mound during the adult growth period of leek maggots.
(6) Soaking seeds
To control garlic maggots, use 90% crystalline dimethods 1500 to 2000 times liquid, soak garlic seeds for 2 minutes, fish out and dry and plant.
To control potato stem nematodes as pests of garlic, first soak garlic seeds in warm water for 2 hours, then use 90% crystallized enemy worms 1000 to 1500 times liquid, soak garlic seeds for 2 hours, fish out and dry and plant seeds.
Control potato tuber moth larvae, spray potato seed potatoes with 90% crystalline dichlorvos 1000 times liquid, dry and store.
Precautions
Due to the influence of environmental conditions and differences and sensitivities between crop varieties, when specifically used in various places, it is also necessary to carry out under the guidance of local agricultural technicians, or first carry out tests and confirmations before large-scale promotion and application, so as not to cause unnecessary harm and loss.
Dioptera is a gastric, contact-killing insecticide with no systemic properties. Therefore, in use, we should pay attention to the spray evenly and thoughtfully to ensure the prevention and control effect.
Poor efficacy against older larvae. In the control of attention to field surveys, spray control in the young stage of pest control.
When using crystalline dimethoaters and soluble dimethocephalus as foliar sprays, 0.05%~0.1% laundry detergent can be added to increase the wet spread performance of the agent on stems and leaves and improve the efficacy.
Generally, the concentration of use (that is, about 1000 times) has no harm to crops, but beans and melons and vegetables are particularly sensitive to enemy insects, which are easy to produce drug damage and should not be used.
The original drug is acidic and cannot be used directly with the hand when dissolving the crystals.
Cannot be mixed with alkaline pesticides.
The drug should be used now, diluted as much as possible, not for a long time.
Store in a ventilated, dry place.
After the end of the application, wash the spray instrument immediately to prevent corrosion. It is advisable to wash your hands with water before using soap.
The safety interval on Chinese cabbage and Chinese cabbage is not less than 7 days, and the maximum use of crops per season is 5 times; The safety interval on kale is not less than 5 days.