How to distinguish and control star fruit diseases? Thank you

The above answer is very good, I agree with the above answer, you can follow the above method to try it.

It generally takes 4-6 years for star fruit trees to bear fruit, but if it is grown in a sunny place, such as Hainan, it only takes 4 years to bear fruit without a shortage of fertilizer, and the growth cycle in other places is slightly longer. The fruit ripens between July and December, and is made up of 5 angular corners, and when cross-cut, it is generally star-shaped.

Star fruit contains a variety of components that are beneficial to human health, such as sugar, vitamin A, vitamin C, various fibers, and acids. The medicinal value of star fruit is also very great, and it has a good effect on mouth sores, chronic headaches, bruises, swelling and pain. The fiber and acid contained in it can relieve the heat accumulation of internal organs, dry and moisten the intestines and pass the stool, and it is the most suitable heat-clearing fruit for people with hot lungs and stomach.

In addition, star fruit is also an expert in treating sore throat. The leaves, flowers and roots of star fruit also have good medicinal properties: its leaves facilitate urination; Its flowers can cure cold and heat; Its root cures joint pain.

Despite the great effects of star fruit, people with kidney disease should eat less star fruit.

Summer and autumn are the seasons when star fruit is ripe and on the market, and the sweet, juicy and nutritious star fruit can be said to be very popular in the market. At present, the planting and distribution of star fruit in China is also very extensive, but the delicious star fruit encounters this pest and reduces the yield, and the harvest is heavy, and this pest is the small fruit fly, so it is very important to carry out scientific control. If the star fruit is harmed by small fruit flies, it can be directly distinguished by the naked eye under normal circumstances, especially in the thick flesh of star fruit, there are some black spots that are the scars left by the small fruit flies after laying eggs.

Moreover, star fruit trees that are harmed by small fruit flies are prone to fruit deformity, and will also fall off relatively early in the ripening period, resulting in reduced yield. In addition, you can see a lot of small star fruit on the tree that has not grown yellow, which may also be the result of small fruit flies.

It can be seen from the reproduction law of small fruit flies that physical control methods can be controlled by preventing them from laying eggs, and of course, methods such as cleaning up the source of insects can be adopted to reduce the damage. First of all, in terms of preventing oviposition, it can be achieved by bagging it, with the protection of the bag, the small fruit fly can no longer lay eggs on the fruit. Since the fruit of star fruit hangs on the trunk of the tree, the work of bagging is also very simple, generally a star fruit set a special bag.

The second is to reduce the source of insects, and the star fruit that has been harmed or fallen off the ground can be destroyed to avoid the pupation of fruit fly larvae.

The growth cycle of star fruit is actually about three months, like to prevent insect erosion, then the best way is to go regularly, watering and fertilizing, so as to achieve the effect.

The growth cycle of star fruit is about one and a half months, during which imidacloprid can be sprayed once or twice to prevent insect infestation.

Star fruit grows for almost a quarter and is usually marketed in the summer. The main reason to prevent star fruit from being eroded by pests is to prevent spawning, so it can be achieved by bagging it, because with the protection of the bag, the small fruit fly can no longer lay eggs on the fruit. You can also use chemicals to prevent and control it, but you must pay attention to the residue of pesticides when using it.

The growth cycle of star fruit is about three years, and when it is found that there are pests and diseases in the leaves or branches of the star fruit tree, these places must be cleaned up in time, and some pesticides can be sprayed to prevent pests and diseases.

Symptoms: Bird feather moth harms flowers and young fruits with larvae, also known as red filarial worms because the larvae are red. Mainly to eat flowers, because the insect body is small, only visible to the naked eye, it is easy to ignore and seriously harm, especially in June and July, the reproduction is very rapid, and when it is serious, it can make all the flowers and young fruits fall off.

Prevention and control methods: start spraying before flowering, once a few days, 3-5 times per flowering, until the young fruit turns to droop before stopping. The agent can be used 90% trichlorfon 800 times solution, or the corresponding concentration of dichlorvos, focusing on spraying flowers and young fruits.

4. Carambola tree black-spotted brown roll moth.

Symptoms: The black-spotted brown leaf curl moth burrows its larvae into the core of the fruit and eats the flesh of the fruit, commonly known as the heartworm. In severe cases, the damage rate of the fruit reaches more than 40%, resulting in fruit drop or loss of edible value.

Prevention and control methods: Remove and bury the damaged fruits. Trap adults with a black light. Spray with 800 times of 90% trichlorfon.

5. Carambola tree red spider.

Prevention and control methods: do a good job in winter garden clearing, strengthen cultivation management, and enhance the ability of tree planting to resist insects; Pharmaceutical prevention and control in the spring warm, autumn cool two seasons with several pesticides rotation control, the applicable agents are 73% gite emulsifiable concentrate 2000-3000 times, 5% Nisolan emulsifiable concentrate 1000-2000 times, 5% tachydione 1500-2000 times.

6. Star fruit fruit fly.

Control method: 800 times of 90% trichlorfon is commonly sprayed. Bagging when the fruit is the size of the thumb can effectively prevent and control the harm of fruit flies and prevent mechanical injuries, improve the quality of the fruit, and increase the value of the commodity.

Pesticides should be sprayed, because only in this way can the problem be better solved, and it can also avoid problems or reduce the yield of sweet star fruit.

Pesticides. Because pesticides can be a good prevention and pests and diseases, pesticides should be used to deal with them.

I think you should spray it with some pesticides, and these pesticides will kill these bugs.

1. The tree body accumulates less organic nutrients and has a large amount of fruit set. The solution is to remove too many fruits, such as deformed fruits, over-dense fruits, diseased and insect fruits, and increase the application of fully rotted organic fertilizers;

2. Pests and diseases, such as fruit flies. The solution is fruit bagging;

3. Anthrax is a pest. It can be used 800 times of 70% rural thiophanate-methyl wettable simple free powder, or 10% difenoconazole water dispersible 1000 times, or 25% Qingfeng prochlorazine emulsifiable concentrate 600 times. Alternate spraying every 10 days, 2-3 times in a row.

4. The amount of fertilizer applied is too large and the organic fertilizer is not fully decomposed, causing burns to the root system. A large amount of water can be poured into the soil to dilute the Nahui fertilizer in the soil.

Star fruit tree wilting may be caused by a variety of factors such as soil quality, good light, temperature, water management, etc., so it is necessary to analyze the specific causes for remediation.

First of all, you can check whether the soil is lacking nutrients, such as nitrogen, phosphorus, potassium and other nutrients, and fertilizer can be supplemented. In addition, too much or too little water can also cause star fruit trees to wilt, so you can reasonably control the frequency and amount of watering to ensure that the soil moisture is suitable, and cover the soil surface to reduce water evaporation.

In addition, pay attention to the prevention and control of star fruit tree pests and diseases, and carry out pest control in time to avoid them from invading star fruit trees and causing chlorosis and distortion.

Finally, care should be taken to provide a good environment for the carambola tree to grow, ensure sufficient and uniform sunlight and the right temperature, and at the same time prune the canopy at the right time to ensure that the tree has more energy to focus on the most important parts of growth and help the star fruit tree regain its vitality.

About the traditional Chinese medicine prescription of star fruit:

1.Star fruit is eaten raw, two or three times a day, one or two each time, and the rotation is used to treat sore throat.

2.Fresh star fruit is judged, chopped and mashed, washed with cool boiled water, and the treatment is changed to hot urine, hemorrhoids and bleeding.

3.5 star fruit (chopped), and an appropriate amount of honey decoction to take, can treat stone drenching, sand drenching.

4.5 star fruit, mash the minced juice, wash with warm boiled water to treat spleen enlargement.

5.Star fruit instant drink: 1000 grams of star fruit, mash the minced juice, fry over low heat until paste, stop the fire and cool down, mix in 500 grams of powdered sugar, bottle for later use, take 10 grams each time, take it with boiling water, 3 times a day, can cure malaria and spleen enlargement.