Mango weevils are more serious, what are the mango weevil control technologies?

The mango weevil is a small beetle, about 7 mm long and black. It mainly harms mango leaves, and affects the yield and quality of mangoes when it is serious, so how to prevent and control mango weevil?Let me introduce it to you.

Mango leaf beetles are widely distributed, and adults eat mango leaves, causing the leaves to dry up. Or the female lays eggs on the young leaves and bites off the young leaves from the base, affecting the growth of the plant. Prevention and control methods:

During the growth period of the shoots, pick up the fallen leaves that have been bitten off every 3 days as the pest plants, dry them and burn them to kill the larvae;During the growth of young shoots, spray once every 7 days, 40% dimethyl ether emulsifiable concentrate 1500 times, 90% trichlorfon 1000 times, 25% insecticidal double 500 800 times and trichlorfon 2004 3000 times.

<> mango leaf-shear beetle, also known as mango leaf-shear beetle, leaf-cut tiger, etc. It belongs to the order Coleoptera, the family Zhou. It is widely distributed in many growing areas at home and abroad.

It has a wide range of hosts, such as mango, almond, cashew nut and longan. Therefore, try not to mix with longan. The damage of this pest to mangoes is enormous.

When adults feed on the epidermis and middle leaves of young leaves, they leave almost round food spots, leaving only a transparent lower epidermis. When these spots are joined together, the leaves shrivel and dry up. Female adults lay eggs on young leaves, bite off from the near base of the leaves, and the incisions are as neat as a knife, resulting in bald tips, which seriously affects the normal growth of plants.

When adult mango leaf cutters lay their eggs and cut their leaves, they are exposed to the scorching sun, and the leaves of the eggs in these places quickly wilt, resulting in a large number of eggs and larvae dying. When the soil moisture content is less than 10% or higher than 20%, the pupae die at an early stage. The feeding activity of adults is temperature-dependent.

When the temperature is 10-20, the amount of food intake decreases with the decrease of temperature. When the temperature is lower than 10, the feeding activity basically stops.

After unearthing, the mango leaves are cut like adults, with obvious up, down, and clustering characteristics. They live on the shoots and leaves of mangoes, and when disturbed, they fall to the ground or fly away. Adult mating, oviposition and leaf cutting mostly occur between 9 and 10 a.m., and wind and rain have no effect on them.

September is the month with the highest incidence of adult worms, so autumn shoots are the most affected. Therefore, during this period, we should pay more attention to the timely control of such pests.

In the bud growth period, the deciduous pests should be picked up regularly, dried and destroyed, with some sprays to kill the larvae, every 7 days should be sprayed, with insecticidal double, amidine emulsifiable concentrate, trichlorfon and other times the liquid to control pests and diseases.

Prevention and control of mango weevils must choose a wide and fertile soil when planting, watering more to prevent pests and diseases, if there are small insects, be sure to spray pesticides in time, you can effectively prevent mango weevils.

During the growth of young shoots, it is necessary to spray insecticides every 7 days to prevent pests from affecting the growth of plants, and also to replenish more water, and clean up the dry leaves in time to prevent diseases and insects from continuing to damage plants.

Usually you can check the planted green plants, usually keep the field clean, fallen leaves or fallen fruits should be cleaned up in time, you can spray some pesticides, usually to loosen the soil.

In daily life, there are many people who like to eat mangoes very much, because there are many people who think that the taste of mangoes is very good, and there are many people who think that the nutritional value of mangoes is very high, and there are also many people who think that the taste of mangoes is very good, so it can be seen that the reason why mangoes can be liked by so many people does make some sense. But in daily life, it is not easy for the farmer to plant mangoes, because when planting mangoes, mangoes will always have nail disease, so it can also be seen that it is indeed very difficult for farmers to plant mangoes, but do you know how to prevent mango weevil?

In daily life, if you want to prevent and control mango weevil, first of all, you must learn to use the soil when planting the soil is more fertile and broad, and you must also prevent pests and diseases in your daily life, and you must also water the plants frequently. And I think the most important thing is that when planting, you must use farmhouse fertilizer, and never use fertilizer bought from outside. If you can do these things well, you will definitely be able to prevent the situation of mango weevil, and the effect is very good, and many people will do this.

In ordinary life, there are many farmers who are very fond of planting mangoes, because there are many farmers who feel that mangoes are very popular with people, and the sales are also very high, although ** is very cheap, but it is still liked by many people. Therefore, it can be seen that there is a possibility that the supply of mangoes will exceed the demand. And I think that if you want to prevent and treat mango weevil in your daily life, you must do a good job in the above aspects, and don't bring unnecessary trouble to yourself.

The method of prevention and control is to kill the larvae during the budding period of the mango, spray them with a pesticide solution, enhance the light, do a good job of hygiene, and remove weeds, so that the pest and disease can be removed.

First of all, it is necessary to spray pesticides in time, remove pests regularly, ensure sufficient light, timely watering and fertilization, strengthen water and fertilizer management and field management, choose some sterilization agents, and also need to choose fungicides.

It is necessary to pay attention to sun exposure, and to burn fallen leaves, spray pesticides once every 7 days, to prevent this poison in advance, to solve the virus from the root, and to pay attention to cleaning the surrounding dead leaves.

Generally, pesticides will be sprayed, and the production of mangoes will be observed in advance, and once a problem is found, it will be managed in time, and some special fertilizers will be used, which can also have a preventive effect.

It is necessary to spray pesticides in time, choose excellent varieties for planting, turn over the soil in advance, prevent pests and diseases in advance, apply fertilizer in time, strengthen field management, and ventilate in time.

To choose the right variety for planting, we must strictly quarantine, pay attention to the hygiene of the orchard, we need to dispose of some fallen fruits, we must pay attention to the cleaning of weeds, and pay attention to the ploughing of the soil.

How can mango weevil be better prevented?

The taste of mango is sweet and sour, so how to better prevent mango weevil?

During the first mango seedling period, it is necessary to pay attention to the timely inspection of the orchard. SummaryKeep the orchard clean, clean the mango pit in time, it is the place where the weevils often overwinter, once the plant is found to be damaged by the mango cut leaf weevil, it is necessary to collect the young leaves on the ground and burn them intensively to remove the eggs, we can also use the principle of mutual restraint between species to control it. Protection and utilization should be strengthened.

Chickens can be raised in orchards, and this method can also be used to pupate leaf gall mosquitoes and other soil pupation pests.

Second, in areas where no insects are found, a strict quarantine system should be implemented, and when selecting mango seeds, pay attention to checking whether there are insects and remove them in time; Do a good job in the sanitation of orchards in pest and disease areas, pick up fallen fruits in time, and concentrate poisoning; Combined with weeding in the garden, fine tillage and insect control, overwintering in the soil crevices, spraying on the canopy, and painting the trunk with white or kerosene emulsion before flowering to prevent adults from climbing the tree, timely killing, timely weeding and loosening of the soil; During the fruiting period, fallen and diseased fruits are removed twice a week and destroyed centrally.

Thirdly, for mixed orchards of mango and longan, the orchard soil can be loosened in combination with weeding, fertilization or winter shoot control to kill some insect pupae and overwintering larvae in the soil. During the growth of shoots, the fallen leaves of the affected plants are picked up every three days, dried and dried to kill the larvae; Spraying is done every 7 days during the growing phase of young shoots. Insecticides need to be used alternately to avoid the development of pests resistance.

Fourthly, in the orchard where mango and longan are mixed, during the occurrence of weevils, the young leaves of mango that have been bitten to the ground are collected in time to remove the eggs and reduce the population of the next generation. From the second physiological drop of mangoes to the harvest period, we often pay attention to picking up the fallen fruit on the ground and burning the discarded pits. Chemical control:

Grasp the insect situation in the emerging stage of each generation of adults, and spray pesticides in a timely manner to kill adults.

Green mango weevil is a kind of pest and disease that occurs during the growth and development of green mango, which seriously affects the quality and production of green mango and reduces the economic benefits of farmers. In this article, we introduced the three common insect pests, harmful diseases and prevention methods of green mango weevil, and looked forward to helping farmers to prevent such pests and diseases stronger.

1. Green mango cut leaf weevil.

The green mango leaf cutting weevil is widely distributed, and the nymphs feed on the green mango leaves, causing the leaves to wither; Or the female lays eggs on the leaves and bites the leaves off the tip, endangering the growth and development of the main stem.

Prevention methods: 1) During the growth and development period of young shoots, pick up the dead leaves that have been bitten off once every 3 days, dry and damage, and eliminate the larvae.

2) In the growth period of young shoots, every 7 days to spray 1 time, with 40% dimethoate emulsifiable concentrate 1500 times, 90% trichlorfon 1000 times liquid, 25% insecticidal double 500 800 times liquid and 2004 3000 times dimethoate liquid.

2. Fruit green mango weevil and fruit green mango weevil.

The green mango weevil is a small beetle with a body length of about 7 mm and a grayish-black color. Its larvae eat mango seeds, harming the quality of the fruit. The green mango weevil is a small tan beetle that is smaller than the green mango weevil, and its larvae feed on the fruit, producing tunnels and filling with insect droppings, making the fruit uningenniable.

These two species of insects are mainly produced in Yunnan Province, Vietnam, Vietnam and Indonesia, and are the targets of inspection and quarantine.

Prevention methods: 1) Strict inspection and quarantine rules and regulations in areas where the insect has not been found, and resolutely put an end to the expansion of new urban areas.

2) Do a good job of plantation environmental sanitation in areas with pests and diseases, immediately pick up the fruits, and concentrate on poisoning.

3) In autumn and winter, the garden should be cleared to remove weeds, and the ground should be carefully turned to eliminate the insect pests that spend the winter in the cracks of the soil layer.

4) In the young fruit stage of 30 to 45 days after flowering, spray the trunk with a solution of dimethoate, trichlorfon and water 1 1 1500, spray once every 7 10 days, and continue for 3 4 times to have obvious control effect.

This will lead to a reduction in mango production, and it will also lead to a smaller size of mango, which will also affect the juice of mango, and will also affect the nutritional value of mango, which may also lead to serious economic losses later.

This will cause the growth of mangoes to be affected, and there will be some black bugs, and the flesh will also rot, and it will spoil before it is ripe, and finally it will lead to a great reduction in mango yield, and the taste will change, resulting in more money loss.

During the management of mango canopy leaves, the tender and oily leaves represent the beginning of a new season of mango, at this stage, several nutrients are constantly sprayed on the foliar surface, and the water and fertilizer applied before pruning are still playing a role, with only one core purpose: to make the canopy leaves grow quickly and healthily. The mango weevil belongs to the weevil family, which is a common pest of many fruit trees such as mangoes, and is also a world-class wanted quarantine object.

Under suitable climatic conditions, a bug can reproduce more than 100 million in a month, which shows how strong and amazing its reproductive ability is, and their huge army can bring different degrees of harm to mango production.

Stone sulfur mixture is a strong alkaline insecticide and acaricide produced by the reaction of sulfur and quicklime, and it is also effective against anthracnose and powdery mildew. It is mainly used to clear the garden before flowering and after fruit picking, and to control mites and scale insects. During the dormant period of mango, spray separately with 45% crystallization 60-80 times and 29% water solution 30-60 times.

Use with caution if the temperature is high. The fruit mango weevil and the flesh mango weevil are small beetles with a body length of about 7 mm and are black. Its larvae eat mango seeds, affecting fruit quality. The flesh mango weevil is a small, yellowish-brown beetle smaller than the fruit mango weevil, and its larvae feed on the flesh, forming tunnels and filling with insect droppings, making the fruit inedible.

Serious occurrence of plots, 5 kg of 5 kg of methyl phosphorus granules or 3 kg of 5 butylthion carbofuran granules per mu, mixed with 40 kg of dry fine soil or chemical fertilizer, sprinkled on the base of the cane plant in mid to late June, and then combined with the control of other pests at the end of July and early August, with 1000 times of 40 hydroamidophos emulsifiable concentrate foliar spray, the control effect can reach more than 90.

It is mainly harmful to shoots, leaves and fruits. The diseased leaves that have not turned green are small black spots the size of needles, and then expand into small convex black spots, with yellow halos around them, and the lesions are polygonal, and the lesions are fused into irregular large black spots in the later stage, and the leaf midrib petioles produce longitudinal lobed spots. At the beginning of the infection, the fruit had needle-like black dots on the peel, and then expanded into crater-like black-brown ulcer spots, which were easy to induce the invasion of anthrax and pedicle rot bacteria.