Aphids are a common insect pest of wolfberry, how to control aphids in wolfberry?

Aphids are endemic pests to wolfberry-growing areas. They gather in large groups on the back of delicate leaves and the rhizomes of leaves to suck juice, destroying the nutrients of wolfberry and affecting the flowering and fruiting rate of wolfberry. Moreover, the reproduction ability of aphids is very strong, which will seriously affect the economic benefits of fruit farmers who grow wolfberry.

The outbreak period of wolfberry aphids is generally when wolfberry germinates in April, and gathers in groups at the back of wolfberry leaves and roots. The destruction will only decrease in the summer. Under the influence of high summer temperatures, the population density of aphids will decrease a lot, but there will still be some stubborn presence on the back of branches and leaves.

Then in the fall, the aphid population rises, with a second peak, which continues to disrupt the growth of goji berries. In winter, when aphids run out of food, male and female aphids combine to lay eggs, which lay between the roots and branches of the branches. When they survive the winter, they will make a comeback after hatching in the spring to continue their destruction.

SymptomsAphids are very reproductive. It erupts in April every year. The larvae and adults gather in the leaves and roots of the leaves, constantly sucking the sap in the leaves, affecting the absorption of nutrients by wolfberry, resulting in nutrient deficiency and atrophy of the leaves.

Moreover, aphids are densely gathered on the leaves, which will also affect the photosynthesis of the leaves. The branches of the goji berries are already very thin. Nutrient deficiency leads to insufficient nutrient absorption by Lycium barbarum flowers and fruits, which will affect the reduction of fruit setting rate of Lycium barbarum. Moreover, due to the lack of nutrients in the shoots, the quantity and quality of the secondary fruits will also decrease, which will seriously lead to a decline in economic benefits.

The above are the effects and symptoms of the disease of wolfberry aphid.

Prevention and control methodsAphids have a great impact on goji berries. Therefore, for the yield and quality of wolfberry, measures to control aphids must be taken, which mainly include the following three points. There are many natural enemies of aphids in wolfberry planting areas, such as tobacco aphid cocoon wasps, lacewings, ladybugs, bugs, etc.

They are all natural enemies of aphids, so we can protect the natural enemies of aphids and use them to control the number of aphids. Pests and fallen leaves pruned in spring and autumn can be removed from the orchard for destruction, and then the orchard can be cleaned again before next spring, which can greatly reduce the number of aphid eggs. During the outbreak of aphids, they are killed with artificial agents, or a large number of aphids are used to prune the branches of wolfberry.

When aphids are about to appear every year, pesticides should be used in advance to prevent them, and sufficient sunlight should be maintained, and fertilizer should be applied in time to make the plants more vigorous and resist pests and diseases.

Usually pay more attention to supplementing nutrition, but also spray relevant pesticides to enhance the resistance of wolfberry, but also to prevent some pests and diseases. Also water in time.

You can sprinkle some insect repellent when planting wolfberry, and you can also sprinkle more pesticides or fertilizers when planting wolfberry, so that you can control aphids.

Some pesticides should be sprayed in time, and they also need to be sprayed on the rhizomes of the leaves, and they should also be watered and fertilized in time, and water and fertilizer management should be strengthened, and insect pests should be removed in time.

Lycium root rot can easily cause the death of wolfberry plants, cause economic losses, and mainly harm the rhizome and root system of wolfberry. In the early stages of the disease, the area is brown to dark brown and then gradually decays. In the later stages, the peel falls off, leaving only the xylem, and vascular browning can be seen on the stems of the plant.

When the humidity is high, pink filaments also appear. The leaves are yellow, and in severe cases, the branches will die.

<> young leaves of wolfberry are atrophied and rotated by fleas, which affects the growth of branches and buds and the development of fruits. Affects flowering and fruiting for three years. The apostles hurt the young and old leaves of the goji berries.

The edges of the damaged blade are curled longitudinally, and the tissue in the curl is thicker. In fact, there are many natural enemies in wolfberry cultivation areas, such as flea cacti, sand flies, ladybugs, small flower bugs, etc., which are all natural enemies. As a result, we can protect flea predators and use them to control flea populations.

Spring and autumn are the two key periods for aphid control, in April in spring, wolfberry leaves will sprout and spread, and after hatching, spray the eggs in time to eliminate aphids, and then carry out large-scale reproduction and dispersal. Spring and autumn are critical periods for flea control, and it is necessary to do a good job in insecticide spraying and pest control. In spring, the bone marrow buds and leaves in April are sprayed with insecticides in time after hatching eggs to eliminate aphids, and then multiply and spread in large numbers; In mid-to-late September, spraying pesticides to eliminate apricot sprouts and insects before laying eggs, I am a fruit farmer and use sugar to grow oranges.

The buds of fruit trees can be destroyed by fleas. The Apostles are a stinging plague. The apostles mostly hurt the germs of various cultures.

They live and breed during spring, summer, and autumn festivals.

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In order to prevent damage to wolfberries, baking soda or white vinegar can be used to control insect pests.

Leaf wolfberry is very prone to encounter some diseases in the whole planting process, generally powdery mildew, gray spot, anthracnose, root rot, fruit flies, aphids, mites and psyllids.

1. Powdery mildew.

Characteristics: wolfberry powdery mildew is a fungal disease, the key damage to the leaves, the long-term incidence rate of 20, the front and back of the affected leaves are milky white powdery mold layer, the damaged leaves are often wrinkled and rolled, and the diseased leaves are yellow and shriveled in the middle and late stages.

Prevention method: Eliminate diseased leaves and branches in the field in winter, burn them, and reduce pathogenic bacteria in the field. In the early stage of the disease, label white (4% tetrafluranazole aqueous solvent) and Heyi Duobao (29% Ningnan) were used.

fluconazole wettable powder), Jin Xiucai (10% difenoconazole water dispersed granules), etc., spray 2-3 times depending on the condition, and spray once every 10-15 days.

2. Gray spot disease.

Characteristics: Gray spot disease of wolfberry is classified as a fungal disease. The key damage to the leaves, with a long-term morbidity of 3o, can lead to damage in 20 30 . Specifically, the lesions on the leaves are ring-shaped, grayish-white to light brown in the middle, slightly darker on the edges, and the diseased part is concave.

Prevention method: improve cultivation technology, apply phosphorus and calcium fertilizer, and improve the disease resistance of the main stem. In June, 80% mancozeb wettable powder was gradually sprayed to prevent diseases.

In the early stage of the disease, spray Yunong No. 1, Runhuan (25% pyraclostrobin suspension % Duo Fumei Fu Zinc, 10 15 days spray once, spray 3 4 times in a row.

3. Root rot.

Characteristics: wolfberry root rot is a common soil fungus disease, in the case of the disease, the roots of wolfberry will turn brown, less hair, in the early stage of wolfberry, the leaves of wolfberry will be small and yellow and thin, more serious when the roots of wolfberry rot and shrink, the trunk slowly withered. It is generally produced in mid to late April and June, and expanded in July and August.

Prevention method: pay attention to prevent planting diseased seedlings in the case of planting, in the field of wolfberry, once the diseased plant is found, it is necessary to immediately clear the pile, replant the healthy plant, and also need to apply lime disinfection to the part of the diseased plant. It can be applied to Yunong Jinpin, Lifu Kang and other self-spraying, and the actual effect of the opening is stronger.

Fourth, anthrax.

Characteristics: wolfberry anthracnose is also known as black fruit disease, branches, leaves, leaf edges are diseased to cause dark brown semicircular lesions, blackened after expansion, the environmental humidity is high and wet rot, and the surface layer of the diseased part is sticky drop-like orange-red is a little smaller.

Prevention method: Immediately eliminate diseased plants, diseased leaves, crux and weeds, and burn them together, reasonably dense planting, and improve fertilizer and water management methods. Charcoal lock (30% bromine) can be applied. prochloraz), Dingxiao (40% dicyanide. pyrazolate) and other prophylaxis.

You should buy pesticides in advance, and then spray them every three or four days, ventilate and bask in the sun, and you can control this pest.

It is necessary to choose excellent varieties of wolfberry for planting, spray pesticides in advance, prevent pests and diseases in time, and prepare the land in time.

When the new shoots of wolfberry grow, the beetle like the goldenrod insect often occurs, bites the new leaves and pulls the feces, which seriously affects the growth of the large-leaved wolfberry, and it is advisable to spray insecticides in spring when the wolfberry has just sprouted, spray 1 time every 10 days, spray 3 or 4 times in a row, and strictly prevent the pest from laying eggs on the bud tip.