What should I do if there are a lot of cabbage worms on the cabbage I grow?

Vegetable green worms. The adult is a cabbage butterfly.

It prefers to be active after the dew has dried in 100 days, and is most active at noon on a sunny and windless day. Vegetable green worm eggs are mostly on the back of the leaves, each female can produce more than 10 100 grains, the larvae hatch in the early morning, the larvae gnaw more leaves at the age of 5, which can account for more than 80% of the larval stage, and the old larvae cook more pupae on the back of the leaves to make cocoons. Biocontrol.

It can also protect natural enemies such as spiders and ladybugs, and release natural enemy insects. Physical prevention and **. It can be prevented with frequency-vibration insecticidal lamps or with colored plywood.

Insect trapping, conditionally isolated planting with insect repellent nets. The prevention optimizer pesticide is poured with 5% nail rhinitis and avermectin from the incubation period of the eggs to the third instar of the larvae.

Water such as cloud fungus should be sprayed every 10-15 days. Take turns to use it carefully and do not develop resistance.

Medicine can solve the problem and the effect of the medicine comes quickly, but the vegetables grown in our countryside do not take medicine. Once pesticides are used, most vegetables will leave wormholes because of the fear of pesticide residues on the leaves of vegetables. Although the appearance is not good, it is really reassuring to eat.

The taste is original and the texture is moist. The vegetables we see at the market are oily and commercial, and they are very popular with people, but when you eat them, you have to soak them in boiling water before you can eat them! The vegetables in the small vegetable garden in the countryside are sold in the market, although they are not beautiful, but they are delicious, in fact, this kind of food is pollution-free food, and it is not harmful to eat it with peace of mind.

Most of these pests breed insect pests with soil or manure, and are not good at using farm fertilizer, first leaving stump vegetable colonies on the rotten high-quality organic fertilizer and soil, and often planting in turn to avoid natural insect pests in the soil and returning straw to the field.

It can cause insect infestations. Straw is also not good for the field, and the straw does not have the effect of nutrient fertilizer yet, because the crops planted next year will not rot.

Pests can be completely eliminated without pesticides. The only way to do this is to burn fires in the countryside and use the leftover "grass wood", which also has the miraculous effect of destroying pests. First of all, what kind of grass and trees are in the grass, and the use of the grass and trees may be unexpected for you.

Now I don't burn the kang, but it's not difficult to use grass and wood. In winter, all kinds of plants in the mountains have withered. At this time, it is better to remove the grass and trees, burn the kang, and leave the gray material bag.

If the use of chemical fertilizers next year is the best anti-inflammatory and sterilizing effect, which can prevent the reproduction of vegetable green insects, eliminate hidden dangers, and completely eliminate the miraculous effect of insects, then, is the grass and trees really so remarkable?

Look at what's inside the grass. I know weeds.

They are all magical treasures in the mountains. Nature's kindness is not bad. It's just that we didn't find it, such as wild firewood, rhubarb, orchids, wormwood.

These plants are cleaned up, burned with grass and scattered on the cabbage leaves. These wild herbs contain a lot of disinfecting effect, so it is best to get rid of cabbage worms.

There are a large number of cabbage worms on cabbage, which can be sprinkled in the vegetable field with white ash, so that the cabbage worms will be reduced, and the white ash can be disinfected and sterilized, and has a certain medicinal effect.

Usually pay attention to it, because cabbage worms will affect the taste of cabbage we eat, it is recommended that you can buy glyphosate or high-hydro methyl chloride and other drugs to prevent it, don't play too much, generally 5 yuan, a bottle of general this kind of medicine, you can eat the dish after a week or two.

You can go to the pharmacy to buy some pesticides and spray them on these cabbages, which will quickly kill these green worms, and can also effectively inhibit the regeneration of insect eggs and prevent insect pests.

Before planting Chinese cabbage, the dead branches and leaves in the field should be cleared out, and the soil should be turned deep and sprayed with insecticides to completely eliminate the overwintering cabbage eggs.

Physical control. The commonly used physical control methods include using black lights to trap and kill the adult cabbage worms, manually capturing the cabbage worms, and using the natural enemies of the cabbage insects, such as the phoenix butterfly and the wide-winged eye bee to eliminate the cabbage worms.

Chemical control. In the growth process of cabbage, once the cabbage insect is found, it is necessary to spray the drug in time to prevent and control it, but the cabbage worm is very resistant, and the sprayed drug dose is small, and it does not have any effect on the cabbage worm, but the dose is too large, it will cause drug residues, so in the chemical control of cabbage cabbage, you can use 500-1000 times the solution of Sophora sophora plant insecticide to spray the surface of cabbage leaves, which can effectively kill the cabbage worm and prevent pesticide residues.

Insect trap lamp.

It is a special light source developed for insecticidal lamps on the market, first of all, the use of lights to attract pests, this kind of insect trap lamp, many kinds of insects, good effect, and easy to install and use, is also a simple and easy way to avoid the use of pesticides to treat insects.

The small greens grown at home are full of insect eggs, and some chickens can be put in it, so that they can be solved by chickens pecking.

You can spray a little pesticide, and the sprayed pesticide will be picked after ten days or a month.

The insect that appears in cabbage is the cabbage worm, which is the young eggs of the cabbage that are sown on the cabbage by the cabbage butterflies. It survives by eating cabbage heels and leaves, and cabbage that is harmed by cabbage insects may die, so it is necessary to remove insects in time.

Because you planted the cabbage, he has not been sprayed with pesticides, so there will be big green worms to eat your cabbage.

When the cabbage reaches a certain growth period, there will be big green worms, because the cabbage is too fragrant, so you have to take medicine.

Cabbage worm is one of the most common pests in Chinese cabbage cultivation, which seriously affects the quality and yield of Chinese cabbage. If there are few varieties of Chinese cabbage, manual capture can eliminate cabbage insects, but the planting area of Chinese cabbage is too large, and manual capture is time-consuming and laborious, and the effect is inevitable. Before planting Chinese cabbage, Chinese cabbage varieties with high resistance to pests and diseases should be selected, which can effectively reduce the occurrence of cabbage worms.

Chinese cabbage is generally planted in autumn, and you can choose to plant it behind vegetables such as eggplant, tomatoes, beans, etc., and try to avoid planting it with vegetables that belong to the cruciferous family, such as cauliflower, Chinese cabbage, etc. After the Chinese cabbage is harvested, it is necessary to clean up the dead branches and leaves to reduce the source of overwintering insects. Cabbage insects have phototaxis and can be eliminated according to their characteristics.

During the growth of cabbage worms, black light can effectively kill cabbage worms.

Biological control methods are used to remove cabbage worms from radish or kale fields. If there are a lot of cabbage worms in the vegetable field, you can put chickens in the vegetable field. Although chickens also eat some vegetable leaves, when there are insects, chickens will choose to eat insects first.

However, it is better to have someone guard the vegetable patch. When they feel that the chickens start eating a lot of leaves, they need to be kicked out of the vegetable patch. In addition, if you can fence it around the vegetable patch with a net, you can use the insect eating characteristics of frogs to control cabbage caterpillars in radish or cabbage fields.

And frogs can only eat cabbage caterpillars or other pests, not leaves. The main natural enemies of the butterfly are red-eyed bees and goldflies. , can be put into the field in an appropriate amount during the growth of Chinese cabbage.

Through pest control, the number of cabbage insects in the field can be effectively controlled and the harm to Chinese cabbage can be reduced. Black lights can be placed in the wild to trap and kill adults.

For fields seriously damaged by cabbage insects, it is necessary to seize the opportunity to spray and control them in time. Targeted insecticides can be mixed and sprayed with new high-lipid membranes to shield the sense of smell of pests, inhibit the replication of germs, reduce their resistance and dosage, and improve the control effect. Brassica insects are not only harmful to Chinese cabbage, but also have a great impact on other cruciferous crops.

Brassica insects reproduce for 3-4 generations in the north and more in the south. After the vegetables are harvested, the larvae of the cabbage worm will lurk in the soil. Therefore, in order to prevent cabbage worms from appearing on the planted Chinese cabbage, it is necessary to avoid rotation with other cruciferous crops such as cauliflower, kale, etc., and it is best to plant after peppers, garlic, eggplant.

1. Physical control is mainly aimed at the adult cabbage butterfly, in the adult period, it can be controlled with frequency vibration insecticidal lamp or black light, which can well kill the adult insects, reduce the number of eggs laid, and control its harmful vegetables. 2. Protect natural enemies such as spiders and ladybugs; It can also release natural enemies insects, parasitic eggs such as broad-eyed wasps; Parasitic larvae include reddish velvet wasps; Parasitic pupae include butterfly golden wasps. 3. The best period for pesticide control is between the peak hatching period of eggs and the second instar of larvae.

After the seedlings emerge, they should start spraying, spraying once every 7 days, spraying 2 3 times in a row.

Physical control: sexual attractants can be used to trap and kill. Or set up a black light lamp every 50 acres of land to trap and kill adults. Agricultural control: ploughing, pruning, picking insects and fruits, early, medium and late maturing varieties with planting, planting corn traps in the field, and moths to lay eggs.

Summary: You can use plant ash to kill insects. Most of the vegetable friends know that the method may be to mix it directly into the soil to make organic fertilizer or sprinkle it into the soil to control pests and diseases, in fact, it can also be made into foliar fertilizer or liquid green insecticide, sprayed directly on the leaf surface. Here's how:

Tools Ingredients: plant ash, pots, water.

Method steps.

1. Take 2 kg of plant ash, pour 20 kg of water (1:10 ratio), stir for 5 minutes, soak and stand overnight, take the supernatant, and spray it on the foliar surface.

2. Take 2 kg of plant ash, pour 10 kg of water (1:5 ratio), stir for 5 minutes, soak and stand overnight, and take the supernatant. Spraying fruits, vegetables and flowers can control pests such as aphids, cabbage worms and maggots from leeks and garlic on plants.

3. You can also sprinkle a layer of plant ash at the beginning of planting vegetables, that is, during the sowing period, so that there will be fewer insects when the vegetables grow. Then we can find that there are still insects growing on the vegetables, and then sprinkle the plant ash on the vegetables, so that the insects can be repellent.

Notes:

Because the plant ash is alkaline, when it is applied to the soil as fertilizer, it should not be mixed with acidic nitrogen fertilizer, so as not to cause nitrogen volatilization and loss of nutrients. For example, ammonium sulfate, ammonium chloride, ammonium bicarbonate and other ammonium nitrogen fertilizers, as well as human manure, manure and other farm fertilizers. In addition, when washing vegetables, wash the ashes of plants and trees.

I don't know what kind of insects are on your dish, if you don't use pesticides, try to spray them with chili water or tobacco soaked in water, I haven't tried this method, I don't know what the effect is. I guess you're a cabbage worm, and that's the eggs that the cabbage moth comes to put at night, and you can use the light to kill the moth at night, and pay attention to whether there are insect eggs on the vegetable leaves, and remove them in time.

The following methods can be taken:

1. Cover the greens with a gauze to prevent butterflies and other egg-laying moths from touching the greens, and there will be no more eggs on the greens.

2. Manually scratch the insects, and the green insects on the vegetables will be scratched, because there are no insect eggs, there will be no more insects.

In short, it is necessary to solve the root cause.

Catch insects with your hands, soak the picked vegetables in salt water or rice washing water, and the insects will fall off the leaves.

If you don't use pesticides, you can only catch them by hand, and I hope you don't plant much!

You can put some insect-eating birds.