Can imidacloprid cure rice borrower, and what medicine is used to prevent and control rice drillworm

<> imidacloprid is a nitromethylene systemic insecticide, which is the agent of nicotinic acetylcholine receptors, which interferes with the motor nervous system of pests and causes chemical signal transmission to fail, without the problem of cross-resistance. It is used to control stinging and sucking mouthparts pests and their resistant strains. Imidacloprid has a broad spectrum, high efficiency, low toxicity and low residue, and the pest is not easy to produce resistance, and has multiple effects of contact, stomach toxicity and systemic absorption.

After the pest comes into contact with the agent, the normal conduction of the central nervous system is blocked, causing it to be paralyzed and killed. It has good fast-acting effect, has a high control effect 1 day after the drug, and the residual period is about 25 days. The efficacy is positively correlated with temperature, and the high temperature has a good insect control effect.

It is mainly used to control stinging and sucking mouthparts pests.

How to use: It is mainly used for the prevention and control of stinging and sucking mouthparts pests (can be used in rotation with acetamiprid at low and high temperatures to use imidacloprid until the temperature is high, and acetamiprid is used at low temperatures), such as aphids, planthoppers, whiteflies, leafhoppers, thrips; It is also effective against certain pests of Coleoptera, Diptera and Lepidoptera, such as rice weevils, rice negative mudworms, leaf miners, etc. However, it is not effective against nematodes and red spiders.

It can be used for rice, wheat, corn, cotton, potato, vegetables, sugar beet, fruit trees and other crops. Due to its excellent systemic properties, it is particularly suitable for seed treatment and granule application. Generally, 3 to 10 grams of active ingredients are used per mu, sprayed with water or dressed.

The safety interval is 20 days. Pay attention to protection when applying pesticides, prevent contact with ** and inhalation of powders and liquids, and wash the exposed parts with water in time after use. Do not mix with alkaline pesticides.

It should not be sprayed in strong sunlight to avoid reducing the efficacy of the drug.

For the prevention and control of pests such as meadowsweet aphid, apple tumor aphid, peach aphid, pear psyllid, leaf curl moth, whitefly, spotted submarine fly, etc., you can spray 4000 to 6000 times of 10% imidacloprid or 2000 to 3000 times of 5% imidacloprid emulsifiable concentrate. Cockroach control: You can choose Shennong's cockroach bait.

Continuous use in recent years, resulting in a high level of resistance, has been banned on rice.

Seed treatment method (take 600 g L 48% suspension agent suspension seed coating agent as an example).

Can be mixed with another stinging and sucking mouthpart insecticide (acetamiprid).

One: Large-grain crops.

1.Peanuts: 40 ml mixed with 100 to 150 ml of water to coat 30 to 40 kg of seeds (1 acre of seeds).

2.Corn: 40 ml mixed with water, 100 to 150 ml coating, 10 to 16 kg of seeds (2 to 3 acres of seeds).

3.Wheat: 40 ml mixed with 300 to 400 ml of water to coat 30 to 40 kg of seeds (1 acre of seeds).

4.Soybeans: 40 ml mixed with water, 20 to 30 ml coating, 8 to 12 kg of seeds (1 acre of seeds).

5.Cotton: 10 ml mixed with water, 50 ml coated with 3 kg of seeds (1 acre of seeds).

6.Other legumes: peas, cowpeas, kidney beans, green beans, etc., 40 ml mixed with water, 20 to 50 ml coated with one acre of seeds.

7.Rice: Soak 10 ml of seeds per mu, sow after whitening, and try to control the amount of water.

Two: small grain crops.

Rapeseed, sesame, rapeseed, etc. are coated with 2 to 3 kg of seeds with 40 ml mixed with 10 to 20 ml of water.

2-3 buckets of water per mu, each bucket of water uses: 50 ml of 5% avermectin EC + 100 ml of 30% emamectin insecticidal single emulsifiable concentrate + 20 ml of plant essential oil whole plant spray. Avermectin and emamectin benzoate have stomach toxicity, insecticidal mono has systemic properties, and essential oils enhance expandability and permeability, this formula is economical and cost-effective.

It is suitable for use in the early stage of borborer.

Rice borer is a general term for borer-type pests such as large borer, two-borer, and three-borer. Because it is a boring pest, it is often harmed in the rice stalk, and it is difficult to prevent and control the pesticides.

In recent years, the resistance of borers in Hunan, Jiangxi, Guangdong and other places has become stronger and stronger, and it is difficult to have an effect if the application method is not correct.

The cost of a bucket of water for the common people in the high resistance area is as much as dozens of yuan, and the prevention effect is still not good. When it is serious, there are dozens of insects on a rice stalk, who doesn't worry? With avermectin + methoxyfenozide and emamectin benzoate + chlorfenapyr, the control effect is good.

Characteristics of the heartworm and the habit of living in the mass fluid.

The living habits of the big borer, the two borer, and the three borer are similar, and I take the common two borer as an example: the two borer, which belongs to the lepidopteran pest and the moth family, is one of the three major insect pests that harm rice in China: rice leaf roller, rice planthopper, and two borer.

Among these three pests, the two borers are more difficult to control, mainly because they are bored into the rice stalks, and the pesticides are difficult to hit directly.

The adult insect of the borer is a moth, and there is obvious phototaxis burying. Moths lay eggs in lumps, preferring to lay at the base of the leaf sheath and at the tip of the leaf. A female moth can lay 5-6 eggs, about 500-700 eggs.

The larvae of the second borer are about 20-30 mm long, with 5 brown longitudinal lines on the dorsal part of the body surface and grayish-white abdomen. It is relatively easy to identify in the field.

After the eggs hatch into the larvae, they first gather at the leaf sheath to feed on the leavesAfter 2-3 years of age, it begins to burrow the stalks, resulting in wilted sheaths, dry hearts, and white ears. If it is controlled, the best time is to use the medicine before and after the drill pipe.

Commonly used pesticides for the control of rice borerworm.

The best time to take the medicine is during the peak of egg incubation. Pay more attention to the pests and diseases of the local agricultural plant protection department** timely use of medicine, often twice the result with half the effort. If you miss the best window, it is recommended to increase the amount.

Recipe 1:

2-3 buckets of water per acre, each bucket of water uses:5% avermectin EC 50ml + 30% emamectin insecticidal single EC 100ml + plant essential oil 20ml whole plant spray.

Avermectin and emamectin benzoate have stomach toxicity, insecticidal mono has systemic properties, and essential oils enhance expandability and permeability, this formula is economical and cost-effective. It is suitable for use in the early stage of borborer.

Recipe 2:

2-3 buckets of water per acre, each bucket of water uses:10% avemthoxyfenozide suspension 50 ml + 12% emamectoxonil suspension 30 ml + plant essential oil 20 ml whole plant spray

Methoxyfenozide and chlorfenoxonil have strong systemic and contact killing effects, and the combination with acitretin emamectin benzoate has obvious synergies and good control effects. The cost is also slightly higher.

Special drugs for killing rice borer: Ruijinte, Lesben, Sutering, Rice Farmer No. 1, special killing borer and other drugs are special drugs for the prevention and control of rice borer.

The special drugs for the prevention and control of rice borer worm include Ruijinte, Lesben, Suterin, Rice Farmer No. 1, Special Killing Borer and other drugs. Mu with 5 Ruijin special suspension 40-50 ml or 48 Lesben 50-60 ml spray control, the control effect is good, with broad spectrum and long-lasting effect, can also treat gray planthopper, rice weevil. When the insect load is large, the second control should be carried out 5-7 days after the treatment.

Biological pesticides include Suterin, Rice Farmer No. 1, Terocide borer, etc., which can be used before the egg hatching and the peak of young age, and can be treated with 51 Rice Farmer No. 1 50 grams or 46 Ternifer 60 grams per mu, and sprayed with kilograms of water for prevention and control. Alternate use of multiple agents, not a single dose of large quantities. In case of windy days or expected rain within 1 hour, do not apply the pesticide.

Maintaining a shallow water layer of 3-5 cm for 3-5 days during the medication period can improve the efficacy of the drug.

When is the effect of spraying the pesticide to control the rice borer worm

1. Observe the position of the rice stalk at 10 cm on the water surface, if the leaf sheath has irregular yellowing, it means that there is a rice borer worm in it, and the effect of the application agent is good.

2. The borborer has a strong ability to live under the conditions of miscellaneous, low temperature tolerance and drought, which is very harmful to rice growers, and can cause a large reduction in rice yield, and the main harmful symptoms are that the rice at the seedling stage is generally scattered or a few larvae are concentrated; On larger rice plants, the larvae are concentrated first, and then they begin to change when they reach the third instar larvae.

3. The residual amount of rice piles can be reduced through tillage and planting; Timely cleaning of straw and weeds in the field can reduce the source of insects and reduce their survival rate over winter.

4. Promote light rice cultivation technology, appropriately postpone the sowing period of rice, and avoid the peak oviposition period of a generation of borer at the seedling stage of rice seedlings that are easy to lay eggs, so as to reduce the harm.

The control time of rice borer varies depending on the region, the rice growth stage and the instar stage of the borborer. Generally speaking, the following time periods are the key periods for the control of rice borerworm:

1.At the 1-3 instar larval stage, this is the best time for control. At this stage, the damage of borborer to rice is relatively small, so it is a critical period for control.

2.Mid-to-late June and mid-to-early July, this is the time when the overwintering larvae of corn borer enter the oviposition stage, and it is also the time when the first generation of larvae hatch harm. This stage is also a critical period for the control of corn drilling.

3.After 20 days of rice planting, about one month after transplanting, the larvae are in the second instar stage, which is the best period for controlling white ears.

In general, for the control of rice borborer, it is necessary to carry out the 1-3 instar larval stage, and at the same time, the specific control time of wheel control should be determined according to the actual local situation and the rice growth stage.

In the second half of June and the first half of July. The control of borer worm usually starts about 20 days after rice transplanting, and the pesticide control is good after one month, and the specific time is in mid to late June and early July. Rice borer is commonly known as borer, which generally occurs more seriously, such as the main one is the two borers and the three borers, as well as the rice bracts, the big borer, etc.