Pea leaf miner is the main insect pest, what medicine is good for pea leaf miner?

You can use some potassium permanganate solution and then spray it, so that it can have a certain effect.

Suggested medication: avermectin Fly Kill 30 (suspension) + silicone, the effect is very good. If it is an outbreak period, grasp the number of days between injections, don't wait so long.

Some flyamine, insecticide, avermectin can be used. Using these together with a certain ratio and some silicone additives will better prevent pea leaf miners.

<> agricultural control: 1. Set up insect nets at the vents of the protected areas in autumn and spring to prevent the exchange of insect sources in the open field and in the shed. 2. Clear the garden in time after harvesting, and concentrate on burying or burning the crop residues damaged by spotted submarine flies.

3. In summer, the shed will be sealed for 7-10 days at high temperature, and the cracks will not be opened day and night, so that the temperature in the shed will rise, so as to kill the source of insects. Yellow board booby-trapping: Place a yellow board in the field, and apply a layer of butter or engine oil on the yellow board to trap and kill adults.

1. How to treat leaf miner flies without spraying

1. Agricultural prevention and control.

1) If crops are planted in protected areas, insect nets can be set up at vents in autumn and spring to prevent the exchange of insect sources in the open field and in the shed.

2) After harvesting, the garden should be cleared in time, and the crop residues damaged by spotted submarine flies should be buried or burned deeply, and can also be used as fertilizer.

3) In summer, the greenhouse is closed for 7-10 days, day and night, so that the temperature in the shed is as high as 60-70, so that a large number of insect sources can be killed and the insect sources can be avoided from spreading to the open field.

4) Timely irrigation, weeds removal, elimination of overwintering and summering insect sources, and reducing the base of insect population.

2. Yellow plate booby-trapping.

1) Use the pest's yellow tropism to trap adults in the field, the yellow board can be made of plastic board or cardboard and other materials, the size is 30 cm 20 cm, and then it is painted yellow, and then a layer of butter or engine oil is applied.

2) After making the yellow board, place 30-40 pieces per mu, and the height of the yellow board needs to be about 10 cm higher than the crop, so that it can effectively trap and kill adults, reduce the number of insect eggs in the field, and reduce the loss caused by insect pests.

2. Which crops are mainly harmed by leaf miner flies?

1. There are many kinds of crops harmed by leaf miner flies, and almost all common vegetable species will be harmed by them, such as cucumbers, loofahs, bitter gourds, tomatoes, eggplants, peppers, celery, cruciferous vegetables, beans and other vegetables, melons, watermelons, strawberries and other fruits will also be harmed by leaf miners.

2. Leaf miner flies are mainly harmful to the leaves of crops, and the larvae will drill moths in the leaves, which will affect photosynthesis and cause the leaves to fall off in severe cases.

3. The control of leaf miner flies can be sprayed together with the prevention and control of whiteflies and other pests, such as whiteflies often appear in the seedling stage of crops, at this time, 25% thiamethoxam (2500 times the solution) or 10% imidacloprid (1000 times the solution) can be sprayed twice.

4. 1-2 days before transplanting, the above drugs can be used to irrigate the roots in combination with fungicides for the prevention and control of root diseases, so that both whiteflies can be prevented and leaf miners and vegetable root diseases can be prevented. And because of the prevention of whitefly, it also has a good effect on preventing viral diseases that vegetables are prone to in the early stage.

Avermectin.

In the Ministry of Agriculture is registered in the control of spotted loon flies.

Prevention and control timely irrigation, weeds are removed, overwintering and summering insect sources are eliminated, and the insect population base is reduced.

Kill and master the peak period of adult worms, spray pesticides in time to prevent adult worms from laying eggs. Adults mainly lay eggs on the underside of the leaf and should be sprayed on the underside of the leaf. Or spray to control larvae when the hazard just appears, the larvae should be sprayed continuously, pesticides can be used 40% dimethoate EC 1000 times, 40% oxidized dimethoate EC 1000 2000 times liquid, 50% dichlorvos EC 800 times liquid, 50% dibromophos EC 1500 times liquid, 40% diazine agricultural EC 1000 1500 times liquid.

(1) Spot spray booby-trap agent in the adult stage with sweet potato, carrot boiling juice (or 30 sugar solution), add 0 05 trichlorfon, spray 10-20 plants per 3 square meters of area, spray - times in 3-5 days, a total of 4 5 sprays.

2) Chemical control: spraying in the peak stage of adults or the initial hatching stage of larvae. The agents are: 40 dimethoate EC 1000 times, 40 dimethoate EC 1000 2000 times, 90 trichlorfon crystals.

The pea and broad bean in spring is the period when the leaf miner fly damage occurs, especially between spring and summer, and it is the most serious period. The temperature has risen, and after a while it will be the high incidence period of pea broad bean leaf miner fly, but you must pay attention to it. Let's take a look at how to prevent it!

The specific measures and methods for the prevention and control of pea and broad bean leaf miner flies should be mainly treated with drugs, which have quick results and good effects. Choose to spray 1000 times of 10% imidacloprid wettable powder in fine weather, and spray control with 50% phoxanthion EC 1500 times or avelin EC 3000 times.

Of course, pyrethroid insecticides can also be used for control, and farmers can choose according to the actual local situation.

Masks must be worn during spray prevention and control operations, one is the need of the current epidemic, and the other is to prevent pesticide poisoning, both of which should be taken into account at the same time. The spraying operation should evenly spray the upper and lower leaves of the whole pea or broad bean plant and spray it thoroughly. After the first spray, spray again every seven days or so, and spray three times in a row to achieve the effect of preventing and controlling leaf miners.

Under the leaf epidermis of the larvae lull pea or broad bean, the pea and broad bean leaf miner fly zigzag forward and feed on the green tissue part, making the leaf an irregular gray color linear tunnel.

When the damage is severe, the leaves are almost damaged, and they are covered with cavities. In particular, the leaves at the base of the bean grass are more seriously damaged, and can wilt and die when it is particularly severe.

The larvae not only eat the leaves of beans, but also the tender pods and peduncles of peas and broad beans. Adults can also suck the juice of peas and broad beans, and the places where they suck become small white spots.

The pea broad bean leaf miner fly is a multi-epidemic pest, which can occur as many as 3 18 generations per year because of the different temperatures in various places. The warmer the temperature, the more algebra occurs. Leaf miners in cold areas overwinter with pupae in the leaf clusters of crops such as peas and silkworms.

Warm southern winters can continue to breed.

Don't look at the leaf miner is small, but it has a wide range of hazards. In addition to harming peas and broad beans, it also harms cruciferous families, Asteraceae, Umbelliferae, quinoa, and knotweed families such as Chinese cabbage, bok choy, rape, cabbage, cabbage, chrysanthemum, celery, sugar beet, spinach and other crops.

Leaf miners can also damage food crops such as rice, wheat, barley, oats, and even lawns and other grasses.

The pea leafminer flies prefer to lay their eggs in those plants that are dense and tall, and the most affected places are also those that grow vigorously and densely.

If the temperature exceeds 35 degrees, the leaf miner fly can survive, or use pupae to survive the summer. Therefore, the damage is generally most serious in late spring and early summer.

Temperature directly affects the development of leaf miners, and larvae and pupae can also develop at relatively low temperatures. The temperature of 16 to 18 degrees is the most suitable for adult development, and the temperature of 20 to 22 degrees is the most suitable for larval development.

The oval-shaped pupae are about 5 mm long, and change from light yellowish brown to reddish-brown to dark brown and begin to feather.

Are peas a spotted submarine fly disease Teachers, if so, how to prevent it.

1.Agricultural control Clean the countryside to eliminate overwintering pupa and reduce the number of insect sources. In early spring, the focus can be on controlling the source of the first generation.

Pea, lettuce and green cabbage were the main hosts of the generation of pea leafminer, and the population density was the largest. 2.Biological control can be sprayed with 1000 times of indendrin EC or 2000 times of avermectin EC, 1000 times of ginkgo bitter lactone aqueous solution.

3.Chemical control For the control of adult insects, 5% fipronil emulsifiable concentrate 2000 times can be used. To control larvae, in the early stage of young larvae, before mastering the 2nd instar larval stage, use 2000-3000 times of 50% latent wettable powder or 5000-8000 times of 75% myxamine wettable powder, 4000 times of 2% emamectin benzoic acid sock oak salt, 1500 times of 5% fluridinylurea emulsifiable concentrate, 4000 times of 10% imidacloprid wettable powder, 10% avi dichlorvos emulsifiable concentrate 1000-1500 times, 10% Cypermethrin EC 2000 times, 50% phoxanthion EC 1000 times, 25% quinthion EC 1000 times and other spray prevention and control.

Pesticides should be constantly rotated or updated to prevent pests from becoming resistant. Take the morning dew dry after 8:00-11:00

At 00 o'clock, it is advisable to spray the medicine from top to bottom along the plant to prevent the adults from escaping, especially to spray the liquid medicine on the front of the leaves.

Hello! Agricultural measures The key prevention and control period is April and May, and the plant residues should be removed in time to reduce the number of insect sources.

Pesticide control When the larvae are first seen in the field, spray once every 7 10 days. You can use avermectin EC 3000 times, or 20% mid-thiophos suspension 8000 times, 50 phosphine octathion EC 1500 times, or 50% thiophos EC 800 times, or 50% propyl bromide EC 1000 times, or 25% imidothion EC 800 times, or 48 Lesben EC 1000 2 000 times, or 25% chlorpyramide 3 suspension 1500 times and other agent sprays, can also use pyrethroid pesticides for control.

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1 Agricultural control After the vegetable is harvested, remove the leaves and weeds in the field in time, burn or apply manure to reduce the number of insects in the field.

2. Chemical control: Choose agents with short residual effect, easy photolysis and hydrolysis; In addition, due to the damage caused by larval leaf miners, the drug must seize the critical moment from the peak of oviposition to the early stage of hatching. kill (21 synergistic cyanoma emulsifiable concentrate) 800 times liquid; 2 5 deltamethrin or 20% fenvalerate 2500 times; 10% bromoma emulsifiable concentrate 2000 times; 10 chrysanthemum emulsifiable concentrate 1500 times; 1 8 insect mite light and 1 8 pests kill 3000 4000 times liquid spray. Spraying pesticides in the appropriate period of prevention and control can receive better control effects.

Harmful characteristics of pea black submarine fly: with larval leaf miner damage, moth mesophyll, leaving only the upper and lower epidermis of the leaves, forming a gray-white serpentine submarine, when the hazard formed a submersible channel in the leaf increases, it can be gradually connected into a piece, so that the whole leaf wilts.

The larvae can also feed on tender stems, pods and peduncles, affecting plant growth and reducing their edible value.

Adult pea leaf miner flies can also be harmed, and females use ovipositors to puncture plant tissues to lay eggs, mostly scattered in the leaf margin tissues on the back of leaves, with more leaf tips. It is characterized by the pupation of mature larvae in tunnels.

For identification reference!