Mango weevil is the main disease of mango, what are the characteristics of mango weevil?

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.

The mango weevil is a small beetle that is 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.

Small black spots will appear on the leaves and fruits, and then they will slowly turn into black spots, and there will be yellow circles around them, which will cause the leaves to wither, easy to produce ulcers, and let the plant die.

First of all, the leaves will gradually turn yellow, causing the leaves to dry up, and will bite off the young leaves from the base, and will also damage the mango fruit, affecting the growth of the plant, resulting in a large area of yield reduction.

The mango cut leaf weevil is widely distributed, and the adults feed on the young leaves of mango, resulting in the drying of the leaves. Or the female lays eggs on the young leaves and bites off the young leaves from the base, affecting the growth of the plant.

Mango weevil disease is the main disease of mango, and its occurrence characteristics are as follows: mango weevil force is included in China's newly revised list of quiet phytosanitary diseases, insects and weeds of the second class of pests, its adults lay eggs under the mango and ripe peel, when the mango grows to 30 to 35 mm, the species begins to lay eggs on the fruit to reach the place of fruit beer, leaving only a little trace, from the appearance can not see the invasion hole and harm strong, the whole peel is blue-green, intact adult, The next generation of mature or ripe mango peel bites a round hole of the adult, and drills out of the hole to eat the young leaves and tender spoons of the mango tree in the mango orchard.

Mango weevil is characterized by brown spots, rotting fruits, separation of the skin and pulp, blackening of the mango skin, and black spots on the branches.

It will lead to a serious loss of mango yield, resulting in serious damage to the mango plant, and the infection rate is also very fast, which will lead to the shedding of many fruits, resulting in a large area of infection.

In this case, it usually occurs at the time of fruiting, and the climate is relatively humid, and the surface is infested by pests and diseases, which is particularly prone to weevil.

This disease occurs during the growth of mangoes, and then the environment in which mangoes are planted is not ventilated and the air is not smooth, so it is very easy to develop this disease, which is not conducive to the growth of mangoes.

This disease is very easy to occur in humid conditions, relatively high temperature conditions, bacterial breeding conditions, and no spraying of pesticides.

Pests and diseases were not killed in time, watering was not done in time, fertilizer was not replenished in time, organic fertilizer was not applied in time, and ventilation was not done in time.

In the autumn, some weeds were not removed, and some fallen fruits were not dealt with in time, and there were some pests and diseases in the soil, so that when the weather was warm, they were easy to lay eggs on the fruits.

Under what circumstances are mangoes prone to dew spots? Improper selection of parks, flat land, shade orchards are more likely to occur than sunny land, dew, humid or continuous rainy weather, etc., easy to dew spots; The branches are too dense, not ventilated, improper management, combined with the prevention and control of mango anthracnose combined with the prevention and control of "dew spot" disease, spray at least 2 3 times in a row in the small fruit period, depending on the weather conditions, every 7 10 days 1 time, you can choose to spray azoxystrobin suspension or water dispersible granules, pyraclostrobin suspension, when it is serious, the whole fruit surface can be covered with black to dark brown stains, and the overlying mycelium is radial, which greatly reduces the commodity value of mango and affects its later sales, thereby bringing greater economic losses to fruit farmers.

irregular oily or water-stained lesions on the surface of the peel; When the humidity is high, there is a black or dark green mold layer on the sick class. The disease does not cause fruit rot, but oily patches or black mold on the surface of the fruit can reduce the commerciality of the fruit. Fruit farmers are commonly known as "mango dew water spot disease".

This paper comprehensively summarizes the symptoms, pathogens, pathogenesis and control measures of mango dew water spot disease, hoping to help fruit farmers better prevent and control the disease.

Fruit trees are weak, and pests and diseases are easy to infect the tree, so it is recommended to increase the application of organic fertilizer or organic water-soluble fertilizer to supplement organic matter to the root soil, enhance the tree potential and improve the resistance of fruit trees. Some people may say that the input cost will be high, but in the long run, it can also promote fruit flouring and prevent dew spots. Strengthen the cell wall of fruits, prevent fruit cracking, hollowness, water rot, and improve fruit disease resistance.

During the annual management of mango trees2 canopy leaves, thrips are the most affected pests, followed by heartworms, leaf-cutting weevils, leaf gall mosquitoes and other pests. Thrips is the most harmful, every year in the young leaf stage, flowering stage, young fruit stage, if the temperature of the mango tree in the winter and spring is relatively low, the light is more and the weather is dry is conducive to flower bud differentiation, and the rain in winter and spring is not enough light, which will directly affect the flowering of mango.

The main reason is that there are many pests in mangoes, and these pests are still laying eggs, which also has a serious impact on the yield of mangoes.

It is because of the influence of some pests and diseases, and there is no proper watering, the soil is relatively dry, and the environment is not very hygienic, and there are some bacterial infections, so mango weevil disease will occur.

It may be that we did not spray pesticides when planting mangoes, and secondly, we did not deal with the moisture of the soil, did not do our best to plough, and did not remove weeds, so we have this pest and disease.

It is caused by many pests, and the pests are constantly multiplying, which is very easy to cause such problems, but now there are many ways to control them.

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.

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.