What are the main pests and diseases of kiwifruit?

There are many pests and diseases of kiwifruit, which need to be controlled in time according to different months.

Kiwifruit pests and diseases in May and September should be controlled to control leaf curling moths, two-star leafhoppers, Tsubaki elephants, scarabs, and yellow gourds, spray 2 3 times 75% chlorothalonil 1000 times, 20% fenvalerate 3000 times or 10% imidacloprid 4000 times.

Kiwifruit pests and diseases should be controlled in July and August, and 1 25% thiazinone emulsion 1000 1500 times or 48% chlorpyrifos 1000 1500 times should be sprayed 1 or 2 times during the larval occurrence period. The safety interval for pesticides is 20-30 days.

1) Brown spot disease.

Kiwi brown spot disease is a common disease, and the rate of diseased leaves in orchards with severe disease is as high as 70% or even higher. Generally, the onset of the disease begins in May and May, and the peak of the disease enters in July and August. In autumn, the disease progresses slowly, and if there is rainy weather in September, the disease is still very serious, and after October, when the leaves are falling, the disease stops developing.

Prevention and control methods: 1Improve the orchard environment, cut off the sick and weak branches, enhance the ventilation and light transmission in the garden, and in the rainy season, it is necessary to open ditches to drain and reduce the humidity in the garden.

2.Apply plantar fertilizer, avoid partial application of nitrogen fertilizer, and apply more phosphorus and potassium fertilizer to improve the disease resistance of plants. 3.

In the early stage of the disease, the first forecast should be strengthened, and the sacrificial prevention and control should be strengthened. You can choose 70% methyl tobuzine 1000 times solution, or 25% Jinlishi emulsifiable concentrate 6000 7000 times solution, etc., spray once every 7 8 days, spray 2 3 times continuously, can effectively control the development of diseases. If you find that there are red and white spiders in the leaves of the garden, you can add avermectin or avirmectin 1500 2000 times solution to the liquid medicine to kill the red and white spiders.

2) Anthrax.

Anthracnose in kiwifruit is one of the main diseases in kiwifruit production, mainly affecting leaves, but also branches and fruits. Anthrax is prone to epidemic under conditions such as weak trees, high temperatures and heavy rainfall.

Prevention and control methods: 1Combined with autumn fertilization and winter pruning, the fallen fruits and leaves are swept away, the diseased branches are removed, and the overwintering bacterial source is eliminated.

2.Before budding, the whole garden is sprayed with a 5-Baumé stone sulfur mixture to eliminate germs on the surface of the tree. 3.

You can choose to use 1000 times the solution of 70% pigeon suspension powder, or 80% Baojiaxin wettable powder 800 times solution to spray the whole park for prevention, pay attention to the interval of 5 7 days, spray 2 3 times.

3) plaster disease.

Kiwifruit plaster disease mainly harms branches and large branches. The disease occurs more often in old orchards with canopy closure in southern China, and is easy to be prevalent in high temperature and high humidity environments.

The main disease of kiwifruit.

Bacterial diseases: canker, flower rot.

Lower fungal diseases: Phytophthora root rot.

Higher fungal diseases: white silk root rot, brown spot, black spot, plaster disease.

Root-knot nematode disease.

Physiological diseases: physiological leaf blight.

Kiwifruit is the main insect pest.

Coleoptera: Apple Blue Jumping Armor.

Homoptera: Mulberry white scale, paramecium scale, horned wax scale.

Homoptera: Spotted wax cicada, small green leafhopper, black-tailed large leafhopper.

Hemiptera: Hemiptera: Hemiptera Tea-winged Bug Green Mango [Microsoft User 17] Bugs.

Tick mite: Rattomites.

Mollusk Door Handle Eye: Wild Slug.

Coleoptera: Scarab (Apple Scarab scarab aeruginosa).

Lepidoptera: Spodoptera exigua, Spodoptera litura, Jujube inchworm,

Lepidoptera: Poison moth golden caterpillar.

Hello, the main insect pests of kiwifruit are canker, cooked rot, pedicle rot, leafhopper pests, beetles, moths and red spiders.

Agricultural control can be used, kiwifruit in preparation for planting before the land to level the land, loosen the soil, and to pick up the larger insect body of the planting land, especially before the winter must be deep ploughing to make the planting area better absorb nutrients, in the growth process, can also be sprayed according to different pests and diseases to carry out the corresponding agents, so that the effect will be better.

Common diseases in kiwifruit cultivation.

Brown spot disease: Kiwifruit brown spot disease is a common disease, the orchard with heavy disease, the rate of diseased leaves is as high as 70%, or even higher, generally will begin to occur in April and May, and will enter the peak period of disease in July and August.

AnthraxAnthracnose is one of the main diseases in the growth process of kiwifruit, which is the most harmful to the leaves, and will also harm the branches and fruits.

Plaster diseaseThe disease mainly harms the branches and large branches of kiwifruit, and the disease occurs more often in the old orchards with canopy closure in southern China, and is easy to be prevalent in high temperature and high humidity environment.

Root rotRoot rot mainly occurs in the high temperature and high humidity season, transmitted by the diseased residues, and the root rot pathogen overwinters in the diseased roots and soil, and occurs in the second year when it encounters high temperature and high humidity climate, which mainly harms the root system of kiwifruit.

The main pest of cultivated kiwifruit.

In the planting process of kiwifruit, it is often infested by insect pests, such as Spodoptera exigua, spotted wax cicada, mulberry white scale, golden tortoise shell and leafhopper, etc., when these pests and diseases occur, they will mainly harm the leaves and fruits, and will seriously affect the growth and development of the plant, so it is necessary to spray pesticides in time.

Kiwifruit pest control.

Agricultural controlThe agricultural control technology for kiwifruit is mainly reflected in the planting environment and the preparation before planting, such as leveling the land, loosening the soil, and picking up the larger insects of the planting area, especially before the winter, it must be deep ploughing to make the planting area better absorb nutrients.

Biological controlChemical control is the main lead grinding with drugs to kill the pests and diseases parasitic on the kiwifruit, which needs to be selected for different pests and diseases, if it is due to the disease caused by beetle, you can use Metarhizium aeruginosa, Metarhizium aeruginosa and water are mixed in a ratio of 1:5, sprayed once every two days, sprayed three times a day.

Physical controlAccording to the types of pests and diseases parasitic to the tree, you can choose different physical methods, mainly including placing sweet and sour solution, sticky insect board, insect trap lamp, insect trap belt, etc. next to the kiwi tree.

There are many kinds of diseases encountered in the planting process of kiwifruit, and the following describes several common diseases and the rules of their occurrence:

1. Kiwi root-knot nematode.

Root-knot nematode disease is a sexually transmitted disease caused by nematode infection in the soil, which mainly damages the root system from seedling stage to adult stage. The pattern of occurrence is as follows:

Generally, the seedling stage is damaged, the plant is short and weak, the new branches are short and thin, the leaves are yellow and thin, and they are easy to fall. When digging the roots, there is a lot of hardening of the root system. **The insect parasitizes the plant to the adult stage, the tree is destroyed, the tree is weak, the branches are few and weak, the leaf yellow is easy to fall off, the fruit is less, small and rigid, the root volume increases, and the color becomes darker; Multiple warts on old roots can heal to form large nodular warts with a rough surface.

In severe cases, root warts and diseased roots are black and rotten, and the whole plant withers and dies.

2. Root rot.

Root rot is a destructive fungal disease that is mainly caused by damage to the roots and is relatively common. It is more common in areas of viscous or waterlogging.

The pattern of occurrence is as follows: the pathogen overwinters in the soil with rotten tissues. After the tree sprouts in the spring of the following year, the fungus spreads through farming or underground pest activities, invades from the root wound or root tip, erodes and kills the root cortex tissue, and can also enter the xylem.

3. Ulcer disease.

Kiwi canker disease is a devastating disease of kiwifruit. It mainly harms the new branches, branches, and leaves of kiwifruit, causing branches and vines to wither. When the disease is severe, the whole plant withers.

Occurrence rule: pathogenic bacteria mainly overwinter on diseased branches and vines, and can also overwinter on diseased branches and vines; Generally in the tissues of parasitic plants in winter. In spring, pathogenic bacteria overflow from the disease area and spread through wind, rain, and insects. It is invaded by plant stomata, water pores, skin pores, and wounds.

4. Brown spot disease.

This disease is a leaf disease caused by a fungal infection. This is very common and severe, and it often causes leaf wilting, affecting the growth and normal fruiting of fruit trees.

The pathogenic bacteria that occur regularly are saprophytic or weakly parasitic, which can harm a variety of plants and cause symptoms such as spots and root rot. The pathogenic bacteria overwinter in the soil with conidia and hyphae. The conidia spread by wind and rain in the following year, and damaged the leaves at the budding stage of kiwifruit shoots. Newly produced conidia are formed during the growing season and re-infestation several times.

The above is the occurrence of common diseases of kiwifruit, I hope it will help you.

These pathogenesis laws are that there will be some insect pests when planting, there will be growth problems, there will be disease infections in the process of breeding, there will be rot as the temperature of the weather rises, and frostbite will appear as the temperature decreases.

Generally, the early development rate is relatively slow, and there will be particularly serious pests and diseases in the middle or late growth period, so it is necessary to do a good job of protection and be sure to use appropriate agents according to the condition.

It is easy to get sick when the temperature is relatively high, and it is related to the variety, the situation of the land, the situation of watering, and the situation of fertilization.

1.Kiwis will have a lot of curls and have problems with broken and dried leaves. At this time, winter landscaping should be done, diseased branches should be cut off, and burned together with fallen leaves to reduce the source of overwintering bacteria.

Strengthen fertilizer and water management, reasonable load, enhance the potential of forest trees, and improve the disease resistance of forest trees; "Early prevention" refers to the use of drugs at the flowering stage, young fruit stage and leaf development stage, as well as the early killing and sterilization of pathogens during the sensitive period of crop growth, so as to reduce the root of pathogens and lay a good foundation for disease prevention and control within one year.

2."Again" refers to increasing the dose (increasing the concentration, increasing the dose, and shortening the medication time) before the onset of the disease, which cannot be done by chemical drugs. Over the years, the people have summarized the annual three-dimensional prevention and control plan of "prevention, control, breeding and breeding" in the prevention and control of kiwifruit canker, and achieved good results.

3.The lesions of kiwifruit are reddish-brown with slight water stains that gradually expand into oval or irregular dark brown lesions. Bacteria can invade the interior of the cortex or as deep as the xylem, and the diseased tissue will die and decay, and gradually shrink and sink slightly after losing water in the later stage.

During the growing season, the flower buds of the trees should be removed in time and the ineffective branches and leaves should be cut off. In addition, through pruning measures such as thinning and shrinking, the ventilation and light conditions of the canopy can be improved, so as to balance the nutrients of the tree and control the canopy. The orchard is well ventilated and light-transmitting, and the branches and buds grow vigorously.

4.Pesticide control after pruning in winter gardens requires spraying with antifungal agents. Spray again in the spring before the conidia spread. Chemicals are sprayed at the beginning of the disease and at the peak of the disease after foliar spread.

5.Farmers who produce green fruits believe that while chemicals are being used quickly, they inevitably have an impact on the environment. Addressing this issue.

At the same time, soil application of Bacillus subtilis could effectively regulate the number and structure of soil microorganisms in the rhizosphere of trees, increase the activity of soil enzymes or restore normal levels of diseased plants, improve the rhizosphere growth environment of diseased plants, and promote the growth of roots and trees.

There are a lot of problems, first of all, it is likely to lead to a decrease in yield, and there is also a possibility that the kiwifruit fruit will be bad and rotten. Be sure to spray some pesticides and insecticides in a timely manner. Its effect is to replenish the vitamins needed by the body, but also to enhance people's memory, can accelerate metabolism, can prevent constipation, and can also clear the bad breath.

The problem now is that there is no special attention to the disease control of kiwifruit, and the disease of kiwifruit is not particularly understood, and the disease of kiwifruit has not received great attention. It can be prevented and controlled by some scientific and technological means. The effect of kiwifruit is that it can supplement vitamins, can promote digestion, can prevent high blood pressure, and can promote blood circulation.

There are many kiwifruit diseases and insect pests, resulting in dwarf plants, yellowing of leaves, wilting, serious water shortage, there are these problems, should be carried out to use pesticides, control water, you can prevent and control, the effect is to improve the yield of kiwifruit.

There will be a lot of problems, first of all, there will be certain problems in the selection of pesticides, and there will be certain problems in the amount of fertilizer and the proportion of fertilizer.

Blind pursuit of high yield, too much fruit will cause seedlings to be nutritious, so that the quality of kiwifruit declines, some fruit farmers generally pay attention to branch pruning, but do not pay attention to soil cultivation, the organic content of the soil declines, kiwifruit will not grow well.

The problem is that there will be some diseases in kiwifruit, which is more complicated with the control of pests and diseases, which will be affected by the weather factors, and will also slow down the effect of pest control due to rainy weather.

There are too many pests and diseases, improper environmental management of kiwifruit trees, single planting methods of kiwifruit trees, too much reliance on chemical pesticides, no attention to the nutrients of the kiwi trees themselves, and no choice of the correct environment for breeding kiwi trees.