What medicine is better for cabbage worms?

Bacillus thurturinus or polyhedrovirus insecticides or emamectin benzoate can be used. Fenozide or acitretinamide or insecticidal mono. Flubendiliprole or indoxacarb or Sinochem 9080 and other agents for prevention and control.

Chlorantraniliprole, indoxacarb, avi, chlorantraniliprole, bollworm nuclear polyhedrovirus, sulfluramide, tetrachlorantraniliprole and other pesticides can be used for the control of green worms. Note that a single ingredient pesticide can not be used for a long time, and the alternating use of pesticides with different ingredients can reduce the resistance of pests to pesticides, and it is recommended to use pesticides during the incubation period of pests or when the insect age is small.

In the peak hatching period of green larvae, it is advisable to use 2000-4000 times of permethrin EC and 3000 times of 5% cis-permethrin EC.

You can also use 20% methrethrin EC 2000-2500 times liquid, or tetrabromothrin EC 5000-7500 times liquid spray. Spray once every 6-7 days, about 2-3 times in a row.

Cabbage wormsSpecial special insecticides are: biological insecticides, pyrethroid insecticides, phenylformylurea insecticides.

1. Biological pesticides

This kind of insecticide is derived from the pathogenic microorganisms of pests, which are friendly to the food safety of agricultural products and the production environment.

liquid, BT wettable powder, etc., can be diluted with reference to the product packaging instructions in terms of concentration. Note that this kind of drug can not be mixed with alkaline pesticides and fungicides, and the spraying time should avoid high temperature and strong light weather.

2. Pyrethroid insecticides

This kind of insecticide has fast insect control speed, high efficiency, and low residue after use, which is safer, and cyhalothrin and cyhalothrin can be used to control Chinese cabbage green worms.

Octemethrin. and other agents, the dilution concentration during application refers to the product packaging instructions. Pay attention to the toxic effects of this type of drug on bees, fish, etc., so pay attention to safety during storage.

3. Phenylformylurea insecticide

This is a new type of insecticide, in Chinese cabbage and other agricultural products, it is easy to degrade soil and water, etc., with low pesticide residues and almost no pollution to the environment. This kind of pesticides for the control of Chinese cabbage green worms include chlorpyramide No. 3, fiproniclone, flubenzuron, pyrethon, bolturon, etc., and the specific dilution concentration refers to the product packaging instructions.

Note that this kind of agent is slightly toxic to fish and shrimp, non-toxic to bees, but to silkworms.

It is highly toxic, and when spraying, it is necessary to avoid silkworm breeding areas and mulberry trees where silkworms feed.

Other methods of control of cabbage worms

1. Hang the yellow board

First of all, do a good job of prevention, such as hanging yellow boards in the field to eliminate adult insects; Secondly, manual insect catching and homemade insecticides.

2. Manually catch insects

Every morning when there is dew on the vegetables, the cabbage worm hides under the leaves or the cabbage heart is motionless, the way to find the cabbage worm is also very simple, look at the insect eyes and insect feces, as long as there is one of them, focus on inspection, you will be able to find the cabbage worm.

3. Homemade pesticides

Commonly used are chili juice, garlic juice, green onion juice, laundry detergent and soap solution, etc., as long as it is against aphids and red spiders.

These small insects have a slight effect, but have little effect on the control of cabbage worms. Alternatively, plant ash can also be used.

4. Biological control

protect natural predators such as spiders and ladybugs; It can also release natural enemy insects, such as the broad-eyed bee, the butterfly golden wasp, the reddish velvet cocoon bee, etc.

Summary. Dear, hello, I'm glad to answer for you Oh cabbage insects are the best with plant ash, because plant ash to kill cabbage insects is a commonly used method in our vegetable garden, the effect is there, and the use method is relatively simple. We can fence the vegetable field with plant ash, and we can also fence cabbage, cabbage, radish and other vegetables with plant ash, so as to prevent cabbage insects and snails from harming the leaves.

Dear, hello, I'm glad to answer for you Grass ash grass ash grass ash killing vegetables and insects is a commonly used method in our vegetable garden, the effect is there, and the use method is relatively simple. We can use plant ash to fence the vegetable field, and hand hole to fence the white potato brigade vegetables, cabbage, radish and other vegetables with plant ash, we can prevent cabbage insects and snails from harming the trapped stool leaves.

Dear, hello, I'm glad to answer for you Grass ash grass ash grass ash killing vegetables and insects is a commonly used method in our vegetable garden, the effect is there, and the use method is relatively simple. We can fence the vegetable field with plant ash, and we can also fence cabbage, cabbage, radish and other vegetables with plant ash, so as to prevent cabbage insects and snails from harming the vegetable leaves. Thank you for your consultation, I hope it can help you, and I wish you a happy life.

Dear, hello, I'm glad to answer for you Oh cabbage insects are the best with plant ash, because plant ash to kill cabbage insects is a commonly used method in our vegetable garden, the effect is there, and the use method is relatively simple. We can use plant ash to enclose the vegetable patch, and we can also use cabbage, cabbage, radish and other vegetables to scatter and enclose the vegetable ashes, so as to prevent cabbage insects and snails from harming the vegetable leaves. Thank you for your consultation, we hope to help you and wish you a happy life.

Cabbage green worms can be used with pesticides such as Bacillus thuringiensis liquid, pink butterfly granular virus, BT liquid, insecticide emulsifiable concentrate, pyridoxine emulsifiable concentrate, Tianda chlorpyramide suspension, high-efficiency chlorpyroco emulsifiable concentrate, phoxanthion emulsifiable concentrate, bactericidal ester solution, synergistic cyanoma emulsifiable concentrate, trichlorfon crystal liquid and other pesticides.

1. Larval stage.

Bacillus thuringiensis solution or pink butterfly granular virus They are suitable for the initial stage of larvae, and it is best to choose 20% Bacillus thuringiensis 800 times solution, or apply the drug at a dose of 20 virus units per mu. The best time to apply the pesticide is in the evening.

2. Growth period

During the growth period of the cabbage insect, the body of the cabbage worm will gradually increase at this time, and its food volume will also increase. And its resistance will also increase. At this time, you should choose BT liquid with a concentration of 500 or 1% 2000 times insecticide EC, 1000 times high-efficiency mebalco EC and so on.

3. Peak period

The peak period of the cabbage worm is also the time when it is the most destructive, and the cabbage worm needs to accumulate enough nutrients for pupation. At this time, Tianda chlorpyramide suspension agent or high-efficiency chlorpyrocarp emulsifiable concentrate, phosphine emulsifiable concentrate, synergistic cyanoma emulsifiable concentrate, bactericidal ester solution, trichlorfon crystal liquid and other liquid should be used.

And the concentration is 20% 800 times Tianda chlorpyramide suspension, 10% 1500 times high-efficiency chlorpyrocarp EC, 50% 1000 times phosphine EC, 21% 4000 times synergistic cyanoma EC, 20% 2000 times bacteriocide solution or 90% 1000 times trichlorfon crystal liquid and so on. Two to three applications in a week are sufficient.