Agrochemical services How to control pests and diseases in early spring orchards

In winter, pests and diseases are dormant and overwinter. At this time, because there is no appearance of pests and diseases, coupled with the lack of awareness of fruit farmers, they give up an excellent opportunity to control pests and diseases, which creates an opportunity for the occurrence of pests and diseases in the coming year. Only by mastering the characteristics of orchard pests and diseases in wintering can we have a targeted and efficient comprehensive control.

It is necessary to take advantage of the characteristics of fruit tree diseases and insect pests to overwinter, and adopt agricultural, physical, chemical and other measures to carry out comprehensive prevention and control according to local conditions, especially the first application of pesticides for spring prevention and disease pests. It is very important to choose pesticides in early spring, a little carelessness, often cause serious spring pests and diseases, which is inconvenient for operation and reduces quality and yield at worst. Qingyuan medicine should first be clear about the objects of pests and diseases to be controlled, and secondly, how to improve the efficacy of pests and diseases that are difficult to treat for a long time, and completely eradicate the root of the disease.

The main objects of pest control in early spring orchards are: rot disease, dry rot, powdery mildew, rough skin disease, rot of the ring and scale insects, apple cotton aphid, aphids, leaf mites, etc. That is to say, insecticides should not only consider the treatment of insect mites, but also have a certain wax-solubility, that is, they should have a strong contact killing effect on scale insects and some insect eggs and egg masses; Fungicides should not only have a broad-spectrum sterilization spectrum, that is, one drug to treat multiple diseases, but also have a systemic conduction effect, and the orchard with serious diseases should consider its two-way conductivity to ensure that it can still perform excellent sterilization effect even in the germination period of fruit trees.

In addition, most pesticides and fungicides are sensitive to alkaline substances, so it is recommended to use the high-tech product Roushui Tong produced by Singapore Linong Company to optimize the quality of agricultural water, enhance adhesion and improve permeability to give full play to the efficacy of the drug. The test results of Shaanxi Xi'an Fruit Friends Association in the northwest apple producing area showed that in early spring, the whole garden was sprayed with a mixture of Jinlis, Bei'an Minle, Bei Roushui Tongbei, which could effectively kill latent germs and apple cotton aphids, aphids, scale insects, etc., which greatly reduced the pests and diseases of the year.

It is worth mentioning that once the latent rot disease breaks out, it is extremely harmful, causing the tree to weaken, the yield to be seriously reduced, and the fruit is small and the quality is poor; In severe cases, the tree can die, or even destroy the entire garden. Growers are always looking for the best way to control it. In view of the outbreak of apple rot disease in Northwest China in recent years and the crude skin disease that has been rising year by year, the Xi'an Fruit Friends Association has successively tested in Shaanxi, Gansu, Shanxi, Hebei, Henan and other apple producing areas to prove that the use of soft water through the mixture of Jinlishi and Stacop has extremely excellent prevention and control effect and low cost whether it is cut or scraped to smear the lesions.

It is recommended to use plastic cloth to spread the tree tray under the scraping and treatment, and then use plastic cloth to collect the lesions and burn them after scraping.

Effective measures for pest control in early spring orchards:

1. Clearing the garden: The orchard that is not completely cleared in winter should be completely removed and the weeds in the garden should be eradicated.

2. Spraying stone sulfur mixture:

Before the germination of fruit trees, spray a 3 5 Baumé stone sulfur mixture in time, which has a good effect on the prevention and control of scale insects, red spiders, powdery mildew, and apple ring disease.

3. Scraping and curing rot disease:

From mid-February, the occurrence of rot disease is checked, and the lesions are found to be scraped and treated in time. The wound should be small, and the diseased tissue should be scraped clean. After scraping, apply the agent to protect the wound, and you can use 843** agent, Fubiqing coating, Gaomei Shi stock solution, etc.

Fourth, tree spraying:

Spray 400 times 500 times Baterin biological insecticide before and after flowering. It can prevent and control leaf rollers, aphids and other pests, and the spraying should be meticulous and even.

5. Ground spraying:

At the beginning of flowering, the ground of the orchard is sprayed with 2 kg of methyl dichloride powder, and 500 times of phosphine can also be sprayed with a shallow rake into the soil, which has a good effect on the prevention and control of beetle.

Sixth, top dressing watering:

One month before the germination of fruit trees, a kilogram of Gaomei compound fertilizer per plant can be applied to the root area of fruit trees, and watered after application. Zinc sulfate solution can be sprayed once half a month after the germination of fruit trees in zinc-deficient orchards to prevent and control apple leaflet disease.

Fruit trees are often attacked by pests and diseases in the process of growth, which can lead to a decrease in yield and fruit quality, and will cause fruit trees to be out of production and die, so the problem of pest control can never be ignored. In addition to emphasizing prevention first and comprehensive prevention and control, prevention and control work should also focus on reducing pollution and reducing costs.

How to prevent and control orchard pests and diseases effectively with pesticides?

When pests and diseases are found in orchards, farmers generally choose pesticides to deal with them, but the use of pesticides in large quantities will not only pollute the environment, but also endanger human health with residual pesticides. In addition, if a pesticide is used for a long time, pests and diseases will develop resistance, so pesticides should be used scientifically and rationally.

1. The application time should be appropriate. That is, to grasp the occurrence law of pests and diseases, and to control them in the critical period. It has been proven that if the application time is appropriate, it can not only effectively control pests and diseases, but also greatly reduce costs.

2. The selection of pesticide varieties should be correct. In order to achieve the effect of rapid insect extermination, some fruit farmers will use large doses of pesticides, which on the one hand increases the cost and on the other hand, it also destroys the agricultural production environment. Therefore, the selection of pesticide varieties and pesticide dosages should be carried out according to the types of pests, the scope of prevention and control, and the harmfulness, and must not be blind.

3. The use of pesticides should be scientific. If a pesticide is used for long-term control, it will make the pests and diseases develop a certain resistance, and the effect of the pesticide will be greatly reduced. In practice, several pesticides can be used alternately or in combination.

At the same time, it is also necessary to use green pesticides that are less polluting to the environment and harmless to the human body as much as possible. In addition, the concentration of pesticides used should be reasonable and the application should be thorough.

The number of pests and diseases in fruit trees is actually accumulated over the years, the longer it is not cleaned, the more the number of pests and diseases will be, and when it reaches a certain number, it will cause direct damage to fruit trees, so it is necessary to control the reproduction of pests and diseases from the source. At the time of the autumn and winter season, fruit trees have more fallen leaves and fruits, so it is necessary to clean up these fallen leaves, fallen fruits, weeds and other garbage in time to prevent diseases and insects from hiding in them for winter. At the same time, it is necessary to remove the bark of the trunk and the rot spots on the trunk to remove the germs and eggs that are hiding in the cracks in the trunk to control the number of pests and diseases.

Garbage can be disposed of by centralized burning. In addition, it is necessary to pay attention to the timing of pest control. Rain can promote the growth of fruit trees, but it can also spread diseases.

Therefore, when the rainfall is abundant, attention should be paid to strengthening the control of pests and diseases; In drought, pests and diseases have a strong reproductive ability, so we should focus on insect control at this time.

If you want to prevent it, you must spray pesticides in time, and when the fruit has not grown, you should first sprinkle it once, and then after the fruit grows, you also need to actively spray pesticides, and when spraying pesticides, you must find a weather that does not rain. In this way, it can effectively prevent pests and diseases.

First of all, this is according to the crops planted, and then to choose their own pesticides, should pay attention to the appropriate concentration, should also pay attention to the appropriate use time, but also need to grasp the best time, do not choose the temperature is relatively high, pay attention to protect the individual**.

Be sure to proportion, spray pesticides in a timely manner, choose the right pesticides for spraying, and can also be sprayed with other drugs, so that you can better solve the problem, you must pay attention to the weather.

There are several key phenological periods for early spring fruit tree pest control.

1.Pre-germination (physics + potion clearing).

2.Budding (the beginning of most overwintering pests and diseases).

3.The red period (the period when overwintering pests and eggs emerge).

Doing a good job in the pest control of these phenological periods can get twice the result with half the effort.