Spider mites are a common mung bean disease, how to prevent mung beans from pests red spiders?

Some pesticides can be sprayed when planting mung beans. You can also mix pesticides and mung bean seeds well and then plant them. Spreading a layer of plastic film and watering frequently can prevent spider mites.

You can spray some special insecticides, and you should also be exposed to more sunlight, kill with high temperatures, and you can also choose to apply some pesticides.

Choose a relatively dry environment for planting, maintain daily ventilation and sun exposure, use pesticides on time, and spray with insect repellents.

Dicofol can be sprayed, dicofol can be effectively controlled, and pyridafen can also be used.

Red spider is a kind of full worm, the scientific name is cinnabar leaf manjia, the most effective drugs to kill red spider are: Aika mite, gold mite branch, gram mite, pyridine mite. Golden mite branch is a new type of benzoylB acaricide, which has no cross-resistance to existing insecticides, and is used in fruit trees, vegetables, and tea trees.

The first is to carry out winter garden clearing. In winter and before the beginning of spring, it is the time when the protection ability and activity of various pests and diseases such as red spiders are the weakest, and a thorough cleaning of the garden can effectively kill some of the overwintering insect eggs, which is of great help to the pest control in the coming year.

Scientific and rational and comprehensive management of orchards, so that the fruit trees themselves are strong, improve their ability to resist diseases and pests, reasonable and timely watering, and reduce the reproductive rate of red spiders. Spray pesticides in time, early detection, early spraying, and early prevention. The spiders that harm agriculture have complex feeding habits and a wide range of host plants, with more than 70 species of known hosts.

Mainly beans, cucumbers, eggplants, peppers, etc. Adult mites and juvenile mites feed on the sap of plants, causing damage to crops, mostly on the back of leaves and tender parts of crops.

Anyone who has ever planted citrus will know the harm of spider mites, which are the most common pests in the citrus planting process, and they need to be controlled at all times. The harm of these spider mites is incomparable with huanglongbing or canker disease, and the impact is not very great, but it can also be caused if you really ignore it. The spider mite is extremely small, about a millimeter in size, barely visible to the naked eye, and its oval body with a pale or reddish-brown shell can be seen with a magnifying glass, making it particularly easy to reproduce in hot, dry environments.

Soak the citrus peel with water about 10 times for a day and night, and spray the plants after filtration, which can prevent aphids and red spiders, such as watering the soil to prevent nematodes in the soil. Try not to use dichlorvos and dimethoate to deal with red spider (mites), because the smell of these two pesticides is too great (they can't be dispersed for many days, especially smoking), and they are not special drugs for red spiders. Artificial control involves scraping the bark of the overwintering eggs before hatching and burning them intensively, and applying white (lime water) to the trunk after scraping the bark to kill most of the overwintering eggs.

The adults and nymphs of the red spider can harm the mung bean, spin the silk and suck the leaf juice on the back of the mung bean leaf and suck the leaf juice with the stinging mouthparts, the affected bean leaves initially appear yellow-white spots, and then with the increase of the red spider, there are slightly red patches between the webs and a large number of red spiders lurking, causing the affected leaves to be partially or even completely curled, scorched and yellowed or reddish-brown, the leaves fall off and even the stalks are bare, and the whole plant dies in severe cases. The mung bean red spider first harms the lower leaves of mung bean, and then gradually spreads to the middle and upper parts. If there are many weeds or sparse plants in the mung bean field, the occurrence is heavier.

Red spiders often appear in mung bean planting, what are the dangers of red spiders to mung beans? Spider mites, also known as leaf mites, can damage all kinds of vegetables, flowers, fruit trees and even weeds on the edge of the field. Suck nutrients directly on the back of strawberry leaves and fruits, and in severe cases, the leaves turn yellow and dwarf, and the flowers are not fruitful or form secondary fruits, and finally the whole plant dies.

Spider mites mainly damage the leaves, stems, buds, calyxes, fruits, roots and bulbs of flowers, etc., sucking the sap of the host, causing the damaged parts to lose green, and small gray-yellow spots appear, causing scorched leaves and early defoliation in severe cases, and some can also spread viral diseases.

Spider mites feed on plant sap on the underside of the leaves as adults and nymphs, and the surface of the infested leaves appears with yellowish-white spots. In severe cases, the whole leaf turns yellow, withers and falls off, and a large field is burned and falls early. Affects foliar photosynthesis and growth, reducing yield.

Generally, it is the lower blades that are damaged. Gradually spread upwards. It can occur in the late growth period of spring and the whole growing season in autumn, especially in the year when there is less rain and drought.

Spider mites suck some of the sap from the plant, which turns the entire leaf yellow. Even falling off and drying up. It will slowly corrode these plants from the roots.

It won't make the whole mung bean grow particularly well. So be sure to deworm regularly and don't let them damage the plants.

They have a lot of harm to mung beans, because the reproduction ability of red spiders is very fast, so they will lay eggs in mung beans, which will affect the normal use, if people do not find out, it will also cause diseases when it enters the body, and there will be a lot of secretions and excretions.

It will cause certain harm to mung beans, affect the yield of mung beans at the end, and it is likely to cause mung beans to grow very slowly, which will lead to some losses in this process.

It will directly affect the yield of mung beans, because this red spider will affect the growth environment of mung beans, and it will also cause the growth environment of mung beans to deteriorate.

This condition causes the leaves of mung beans to turn yellow, the plants are short, and they are unable to absorb nutrients. In this way, it will not be possible to produce high yields.

Mung bean has wide adaptability, strong resistance to stress, drought tolerance, barrenness tolerance, shade tolerance, and short growth period. In the early stages of root rot, foliar sprays are applied with fulvic acid mixed with water. Then spray 700 times of bean worm clear in time, which can achieve the effect of one medicine and three effects, which can not only quickly kill the above-mentioned pests, but also effectively prevent and control virus diseases and yellow leaf diseases, and promote plant growth.

In the early stage of leaf spot disease, chlorothalonil wettable powder can be sprayed with water three times and sprayed once every half month. Or spray kilograms of urea plus 1 kg of potassium dihydrogen phosphate per mu, divided into 2-3 times, each kilogram of urea and 400-500 grams of potassium dihydrogen phosphate, sprayed with 60-65 kg of water. Mung beans are sensitive to micro-fertilizer, and the effect of applying micro-element fertilizer is obvious, and 5-10 kg of micro-fertilizer can be applied per hectare as base fertilizer.

Top dressing should be appropriate and timely, and it is suitable to be applied in the ditch between the rows at the seedling stage and flowering stage, such as urea, compound fertilizer, etc. Spraying foliar fertilizers at the flowering and podding stage has obvious yield increasing effects, such as ammonium molybdate, zinc sulfate, etc. The base fertilizer of mung bean can be used calcium magnesium phosphorus fertilizer, ash residue, plant ash, farmhouse fertilizer, etc., the principle is mainly organic fertilizer, supplemented by inorganic fertilizer, mixed application of farmhouse fertilizer and inorganic fertilizer, application of sufficient base fertilizer,,, appropriate top dressing.

The base fertilizer is better to apply human manure, kang cave soil and pig, chicken, sheep manure, etc.

Vigorous mung beans, especially mung beans planted with ridges covered with plastic film, are prone to the phenomenon of overgrowth, resulting in flower and pod fall, late pod setting, and lodging and affecting yield. It can be sprayed with 3 5 grams of arthromine mixed with water at the branching stage of mung bean, and sprayed again at an interval of about 10 days. In the budding stage, paclobutrazol can be sprayed, and about 5 grams of 15% paclobutrazol powder can be added per barrel to control the transformation.

The main insect pests are aphids, red spiders, pod borers, noctuidae, cotton bollworms, leaf rollers, etc., emamectin, avermectin, imidacloprid, cypermethrin and other pyrethroid pesticides, timely foliar spraying to do a good job of prevention.

You can spray some pesticides, because such pests are very sensitive to pesticides, so they can protect the plants very well.

The main thing is to spray pesticides, because pesticides can kill these spider mites.

Some pesticides can be sprayed, and some pesticides can prevent spiders from getting close to red beans.

Special chemical pesticides should be used, as only then can the invasion of this pest be better avoided.

Mainly based on pharmaceutical prevention and control. Strengthen field inspections, and timely apply pesticides for prevention and control after local spotting occurs. Use 1000 times of 50% malathion EC, or 2000 times of 50% dibromophos, or 5000 times of 25% deltamethrin.

1 time every 7 days, 2 to 3 times in a row. Emamectin benzoate, avermectin, imidacloprid, cypermethrin and other pyrethroid pesticides can be selected, and timely foliar spraying should be done to do a good job of prevention.

Prepare for prevention in advance, spray insecticidal agents, pay attention to the use of fertilizers, understand the habits of spider spiders, and solve the root cause.

A large number of pesticides should be sprayed for control, the effect is very obvious, and the influence of these red spiders on soybeans is also very strong, and it is easy to have some pest and disease problems.

Spraying. Because my soybeans are sprayed with pesticides every year, and there have never been spider mites, I should spray pesticides to control them.

Before planting soybeans, you can pour some pesticide into the soybeans, stir well, and then go to the ground.

Pesticides can be sprayed to control it, because pesticides have a good limiting effect on soybean red spiders.

Timely weed removal reduces the number of eggs by reducing the hiding spots of spider mites.

Physical Methods:

Weed removal: Remove weeds in time to reduce the hiding spots of red spider mites and reduce the number of eggs.

Control the environment: Because red spiders like a high temperature and dry living environment, it is necessary to cool down properly and water in time.

Increase natural enemies: There are many natural enemies of red spiders, such as Chinese lacewings, mite-eating ladybugs, etc. Appropriately increasing the number of its natural enemies will help the biological insecticide, green and healthy. But when choosing natural enemies, it is necessary to choose insects that do not conflict with crops, so as not to cause secondary damage.

Before the jujube tree germinates and the jujube spider is about to go up to the tree (about late April), a closed viscose ring can be applied to the trunk of the tree with a non-toxic and non-dry sticky shellac, the ring width is about 1 cm, and it can be applied again in about 2 months to prevent the jujube red spider from transferring to the tree, and the effect can reach more than 95%.

Use pesticides on time, pay attention to the surrounding environment, and ensure that the environment is clean and hygienic, so that better prevention and control can be carried out.

Prevention and control methods: & 41; Prevention is the priority, and the agricultural prevention and control method of slag lifting is adopted. Apply plantar fertilizer, timely and respectfully remove weeds, irrigate in time when drought, and carry out water-drought rotation if conditions permit, which can reduce the onset of disease.

##41;Chemical control. First of all, it is necessary to strengthen the inspection of insect conditions in the field and control the occurrence stage of point pieces. When it is found that there are sporadic yellow and white spots on the leaves, it should be immediately treated with medication, and you can choose to spray 25 alkyne mite emulsifiable concentrate 3000 times, or 20 mite net, mite emulsifiable concentrate 2000 times liquid, etc., spray 2 or 3 times.

In times of drought, increase the amount of liquid spray; The mobile sprayer with high pressure and strong atomization is selected, and the prevention and control effect is better; Take care to alternate medications to avoid drug resistance.

##41;Biocontrol. You can choose to spray 1500 2000 times of azadirachtin EC, or 10 1000 2000 times of Liuyangmycin EC, avermectin EC, 400 600 times of Huaguangmycin, and 2000 times of biomimetic pesticide Nongke mite EC.

I wish you a smooth work and a happy life!

The control of spider mites should be based on agricultural control, and the application of biological control and chemical control should be coordinated. In terms of strategy, we should focus on the occurrence stage of point slices and control the damage to a minimum.

1) Agricultural control.

Clean the countryside. At the end of autumn, the leaves of the field are burned or manure to reduce the overwintering places of spider mites. After the beginning of spring, before planting, remove the branches and leaves and source weeds left over from the field and the edge of the field to eliminate the source of insects that overwinter in the field.

Strengthen field management. Especially in dry weather, pay attention to irrigation and combine fertilization to promote the healthy growth of plants and enhance resistance.

2) Chemical control.

On the basis of strengthening the monitoring of pests and mites in the field, timely selection and treatment should be carried out in the stage of spot occurrence to avoid the outbreak of patches. In recent years, due to the continuous use of chemical pesticides, the type, concentration and application period of the pesticides are not reasonable, and the leaf mites have become resistant, and the natural enemies have been killed in large quantities, resulting in their rampant damage. Therefore, the application of chemical pesticides should pay attention to the rotation of different types of agents, the use of compound synergist agents or some new special agents.

At present, there are many chemical agents that can be used, such as 20% metamidine emulsifiable concentrate 1000 times, 73% alkyne mite emulsifiable concentrate 1000 1500 times, 40% chrysanthemum horse emulsifiable concentrate 2000 3000 times, 25% miteicidal wettable powder 1000 1500 times, 5% fipronidine emulsifiable concentrate 1000 1200 times, bifenthrin emulsifiable concentrate 1500 times, etc.