What do you know about the common diseases of bananas?

There are more than 20 kinds in total, such as mosaic heart rot, banana leaf spot, banana cross-vein aphid, banana bunch top disease, as well as anthracnose, leaf rollers, etc., be sure to choose different pesticides and fertilizers according to different situations.

The more common ones are banana bunch top disease, banana root-knot nematode disease, banana wilt disease, at a fixed time must prevent pests and diseases, proper fertilization, proper watering, proper spraying of pesticides.

Common diseases include banana bunch top disease, banana root-knot nematode disease, mosaic heart rot, Fusarium wilt, banana leaf spot, and anthracnose.

Common diseases include banana bunch top disease, banana root-knot nematode, mosaic heart rot, blight, banana leaf spot and anthracnose.

There are many main pests and diseases of bananas, so it is easy to necrosis of bananas, so during the planting of bananas, we must do a good job of pest and disease control.

Banana is one of the four major fruits, rich in nutrition, loved by the people, but there are many pests and diseases of bananas, so the prevention of pests and diseases is essential.

1. Banana leaf spot disease, the main harmful part is the leaves of bananas, this disease can be sprayed on the leaves of diseased banana trees by leaf spot agents, and can also be prevented and controlled by reasonable dense planting, timely drainage, weed removal, ventilation and light. 2. Banana scab, mainly harming the leaves and fruits of banana trees, using scab prevention and control agents, spraying the leaves, and also with fruit bagging control. 3, banana bunch top disease, by the banana cross-vein aphid disease, harm the leaves of bananas, this disease is not yet a good agent, so it is recommended to choose disease-free healthy seedlings, keep the planting area clean, found that there are banana diseases must be eradicated and burned in time to prevent the infection of other banana trees.

4. Banana root-knot nematode disease, this disease harms the root system of bananas, so we should regularly disinfect the soil when planting bananas, plant without diseased soil, and irrigate the roots with pesticides.

5. Aphid disease, aphids will suck the mesophyll, resulting in poor plant growth and a significant drop in yield, which can be prevented and controlled with pesticides. 6. Weeviliasis, larvae mainly harm the stems and leaves of bananas, use pesticides for **, spray, kill insects, and can also be cultivated and controlled with healthy banana seedlings. 7. Leaf roller disease, this disease harms the leaves of bananas, insects will eat the leaves of bananas, thereby affecting the yield of bananas.

8. Spodoptera litura, this insect eats the leaves of banana trees, and can kill the insects through insecticides, or remove the diseased leaves, and treat the diseased banana trees in time.

These are the pests that I know of bananas to control during planting.

Crown net bug: remove the diseased leaves in time and destroy them in time to reduce the spread of the disease. In the case of serious pests and diseases, spraying banana leaves with 750 times high chlorloxevyl salt solution or 750 times cyhalothrin solution can play a good control role.

Spodoptera litura: Remove weeds in the field in time to prevent weeds from competing for nutrients in bananas. After the occurrence of the disease, avermectin benzoate emulsion or avermectin emulsion should be sprayed sequentially before and after the banana leaves for control. It works great.

Aphids: Choose virus-free banana seedlings, but not intercropping with cruciferous vegetables. Reasonably select weak-growing plants, eliminate aphids, and then cut off the infected site, or directly pull out the infected plants and bury them deeply.

Bananas are prone to cross-vein aphids, leaf rollers and other pests, which can be controlled with insecticides and mites such as dimethoate, trichlorfon, and mite. Bananas are also susceptible to leaf spot, which is caused by fungal infection of leaf spot, which can be prevented by spraying carbendazim in advance.

The prevention and control of P. p. should start from the banana orchard ecosystem, follow the plant protection policy of "prevention first, comprehensive control", and do a good job in the prevention and control of seedling stage and field growth stage. Strictly control its rampant hazards, rationally apply pesticides, and effectively protect and utilize natural enemies.

1) Agricultural control.

Combined with various agricultural practices, banana stalks and leaves are destroyed in a centralized manner after harvest to reduce the insect source of bananas. Removal of other host plants and weeds in the banana orchard can reduce the occurrence of P. pitiferii.

2) Protection and utilization of natural predators.

First of all, when controlling other pests, it is necessary to choose agents that have good control effect on the target pests without killing natural enemies or minimize the number of insecticides to protect natural enemies.

Secondly, when a large number of leaf mites occur, choose acaricides that are highly targeted to P. p. p. and use less broad-spectrum insecticides. For individual banana plants with large insect density, the method of picking and treating is used to avoid universal control and killing of natural dominant natural enemies in the field.

Finally, the mite was controlled by diverting natural enemies that were relatively successful and had good control effects in other places, and establishing a local natural enemy community. According to the experimental observation, the courgette blunt mite introduced from abroad in Fujian has a good control effect on the leaf mite of P. pirsonii, and can be introduced into the province to control the mite.

3) Chemical control.

The application of chemical pesticides to control P. pesticide is the key to master the application time and application technology. In Hainan, from October to April of the following year, there is drought and little rain, and the food is sufficient, and the occurrence of leaf mites is serious, which is a critical period for prevention and control. 4 There are often heavy rains in October, and the mite damage is relatively light, so it is usually not controlled. Because the mite is harmful on the back of the leaf, attention should be paid to spraying the liquid on the back of the leaf when applying the pesticide.

In terms of drug selection, attention should be paid to the rotation of drugs.

According to the author's test, avermectin 4000 times solution, 20% quick-extinguishing anti-2000 times solution, 50% mite treatment 1500 2000 times solution and other agents can achieve good control effects and have little killing effect on natural enemies. Among them, the rapid extermination resistance can also treat banana net bugs, Spodoptera lituras and other pests.

1. Banana leaf spot, after infection, banana leaves are brown long spots, oval spots, and green wilt spots appear 2. Banana scab, many small black grains are produced on the fingers of banana fruits after infection, and there is no roughness when touched 3. Banana root-knot nematode disease, after infection, bananas dwarf and yellow leaves appear.

Root nematodes, scab, leaf spot, rot disease, weevil, etc., these are some of the pests and diseases that need to be prevented.

To control the crown bug, when the ambient temperature reaches 28, the larvae and adults of the crown bug will attach to the back of the banana leaf and gnaw it, resulting in yellow-white spots on the banana leaves, and the back of the leaf will also show dense brown spots, and the leaves will appear yellow.

Bananas have always been one of the main fruits of our country, ranking among the top fruit trees in terms of area and production. However, in recent years, due to factors such as the sluggish domestic banana market and the serious occurrence of devastating diseases, the area of domestic bananas has shrunk significantly or the production area has shifted. The income is much lower than the investment.

Like we have not had a smooth year in recent years, 15 years to the bench yard refers to 17 years of hail, 18 years of frost, 19 years can be but the production capacity is too large, the market is sluggish, and this year 2020 is another frost.

<>I remember that in the 90s, it was difficult to buy this fruit in small counties in Sichuan, and now we can buy this fruit everywhere in Sichuan, and we do not produce bananas in Sichuan. It can be seen that in recent decades, the scale of banana planting has been expanding, a large number of people planting bananas, resulting in market saturation, due to the sugar ** high and low, sugarcane farmers in many places feel that the income from planting sugarcane is not high, and they have the tradition of planting bananas, so they are resistant to not planting bananas.

At present, there are still some places where bananas are withdrawn from cultivation, causing dissatisfaction and incomprehension among banana farmers. The main production area of bananas in China is Guangxi, but in recent years, there are fewer and fewer people planting bananas in Guangxi, the main reason is that the profit per mu of planting bananas is lower than that of other planting products, and from the perspective of economics, it is the result of market incentive selection. First of all, although the yield of banana is high, but now the management cost of crops is too high, the market is low and the supply exceeds demand, and farmers basically only make no money by keeping their capital, and can not bring economic benefits.

As a result, farmers can only give up bananas and change to other cash crops, and the society must now demand money for everything.

It's not that it's getting less and less, it's always been very few, there used to be no choice, the family was farming at home, and now it's basically young people who go out to work, and the elderly and children stay behind. Working outside for a month is more than a year at home, and I definitely don't want to stay at home. Bananas have an obvious banana cycle, similar to the pig cycle, there will be 2-3 consecutive years ** fall to 1 cent can not be sold, because banana seeds can hang fruit in half a year, last year ** this year there are a large number of bases to follow up the expansion, often there will be 3 yuan a year after 3 cents a year after the situation of 3 cents.

It is easy to cause bananas to be infected with bacteria, and it is also easy to cause a large reduction in banana production, which can easily lead to bananas not growing up, which can cause devastating losses to bananas, can infect all the Nasson's liquid bananas in the cave, and can also make the soil have a lot of bacteria.

This situation will affect the yield and quality of bananas, this disease is very common, and in this process will also affect the size of the fruit, the most important thing is that it is very likely that Qi Xiao will sell manuscripts without fruit, so in general, such problems should be treated in time.

If there is blight, the rhizomes and leaves of bananas will appear in the shape of jujube cherry trees, which will directly cause banana trees to wilt. As a result, the quality and yield of bananas have dropped significantly. It can also infect other banana trees.

If the banana has such a disease, its leaves will gradually turn yellow and wither, and the fruit will gradually produce black spots and gradually rot, resulting in the whole banana kernel dust tree will appear to rot and hollow out the phenomenon of excitation, resulting in a large area of yield reduction.

Banana leaves will have some spots, and there will be some brown black spots, if it is serious, the banana leaves will fall, and there will be some black spots or rot on the banana, and if it is serious, the banana will also fall.

It may cause some damage to its body, it may also make Ziliang have diarrhea, and even make yourself particularly uncomfortable, and the scum may trigger some minor diseases, and may even affect the liver and stomach.

The harm of banana wilt is that it may affect the yield of bananas, and the infection rate of banana wilt is also very fast, if it is not controlled in time, it may be transmitted to other bananas, and the damage of this disease is very large, these are the hazards of banana wilt.

<> dear, I am glad to answer for you: banana fruit pests and diseases are anthracnose. Fruit disease:

In the early stage, small black-brown spots appeared, and then rapidly expanded and joined with large dark brown slightly depressed spots or patches scattered, and the whole fruit turned black and rotten in 2 3 days, and there were dense orange spots with stickiness on it. Anthrax plaques are classified as acute and chronically extended. Acute Extended Lesions:

The lesions are water-stained, dark green, and the edges are indistinct. Chronic extended lesions: lesions are round or irregular, with prominent margins, dark brown margins, **light brown; Small red spots or conus spots appear on the old leaves.

Summary. Hello, dear, banana from seedling to fruit stage, there are many pests and diseases, including leaf spot, scab, anthracnose, mosaic heart rot, bundle top disease, root-knot nematode disease, blight, aphid, Spodoptera litura, red spider and other pests and diseases, these pests and diseases will cause great harm to different parts of bananas, which will directly affect the yield of bananas, and some will even cause banana trees to wither and lose the ability to bear fruit.

Hello, dear, banana from seedlings to fruiting stage, there are many pests and diseases, including leaf spot bucket disease, scab, anthracnose, mosaic heart rot, bundle top disease, root-knot nematode disease, blight, aphids, Spodoptera litura, red spider and other pests and diseases, these pests and diseases will cause great harm to different parts of bananas, which will directly affect the yield of bananas, and some will even cause blind banana trees to wither and lose their fruit.

The main diseases and pests of bananas are bacterial stem rot and bulb weevil. As for the bundle top disease and mosaic heart rot, there is no ideal prevention and control agent at present.