When is the plum tree insecticide, and what medicine is good to use?

Plum tree. Generally, around April, you can spray peach spirit or cypermethrin.

Medicament. After diluting the agent with water in proportion, spraying it on the plum tree can prevent the plum tree from being attacked by diseases and insects, which is conducive to the growth of the plum tree. If the plum tree is infested by pests and diseases, it is necessary to cut off the branches and spray them with insecticides.

Plum trees are sprayed around April.

The plum tree is of the Rosaceae family.

Prunus is a perennial tree.

Plants, after growing to a certain time, need to be sprayed, which is conducive to the growth of flowers and fruits. Plum trees are generally suitable for spraying around April, and plum trees can be sprayed with peach or cypermethrin. April is the flowering period of plum trees, and spraying can prevent pests and diseases.

Plum trees are sprayed after flowering, pay attention to the concentration of the agent, and need to be diluted with water in proportion. If the concentration of the agent is too high, the plum tree will be damaged, the flowers are easy to fall off, the number of flowers is small, and the yield of the fruit will be affected in the later stage. After diluting the agent with water, it can be sprayed once in about 20 days, and sprayed 3 or 4 times in a row to prevent pests and diseases.

Plum trees are susceptible to pests and diseases during the growth period, and after the trees get sick, they also need to be sprayed for control. If the plum tree has anthrax.

After pruning the diseased branches, Bordeaux liquid can be sprayed.

Agents such as carbendazim or methyl tobuzin. The plum tree was subjected to red spiders.

After the infestation, pine borer or dimethoate can be sprayed to remove insects. After the plum tree is attacked by pests and diseases, it is necessary to prune off the leaves of the diseased branches and insects in time and burn them intensively. After pruning, spray the plum tree, diluted with water, generally 7 10 days between 1 can be sprayed once, continuous spraying 3 4 times can effectively remove pests and diseases.

In the later stage of maintenance, you can spray plum trees once between 20 and 30 days to do a good job of prevention.

The best insecticide for plum trees is when they are in bloom.

There are many types of pesticides, and they can be used, but the most used is trichlorfon.

Mid-flowering is best.

Summary. Plum trees in the spring around April, this time is mainly sprayed peach spirit or cypermethrin can prevent pests and diseases, spraying the drug to pay attention to the concentration of the drug, need to be diluted with water in proportion. Then spray again every 20 days or so, 3 or 4 times in a row, the effect is better.

The best time to spray plum trees.

Plum trees in the spring around April, this time is mainly sprayed peach spirit or cypermethrin can prevent pests and diseases, spraying the drug to pay attention to the concentration of the drug, need to be diluted with water in proportion. Then spray again every 20 days or so, 3 or 4 times in a row, the effect is better.

My tree has sandwich worms every year.

Strengthen the comprehensive management of orchards, improve the disease resistance of trees, cut off diseased shoots in Dongcun, remove dead branches and fallen leaves in the orchard and destroy them in a centralized manner. During the onset period, the continuous removal of diseased leaves and fruits can effectively prevent the spread of diseases. The soil under the canopy can be sprayed with 50% phosphine EC before physiological fruit drop.

It can also be controlled by biological control measures such as stocking chickens in orchards or applying Beauveria bassiana in the soil. To control pests and diseases, the fallen fruits should be swept away after autumn to reduce the source of insects in the second year.

Plum trees should not be sprayed during flowering to prevent accidental killing of bees and other insects. Because the results need to be pollinated, and pollination requires insects to collect honey, and pollination is carried out at the same time, although the wind can also be used, but it is not as accurate as insects, and the effect of artificial pollination will be slower. For insects to pollinate, there must be no pesticide odors released from the pollen.

If it is necessary to control aphids, you can spray acetamiprid and other aphid control agents after flowering. At the peak flowering stage, 300 times the liquid of borax (sodium borate) can be sprayed to improve the fruit setting rate.

Plum trees should be precautionary during the flowering period, and during the maintenance period, it is necessary to prevent the plant from rain, otherwise the petals will be harmed. During flowering, the plant's need for water increases, and in order to give the plant sufficient water, it also needs to have sufficient sunlight. When watering, you should adjust the amount of watering, too much water will cause the petals and buds to fall off.

Plum trees are sprayed with 300 times of borax (sodium borate) during the flowering period, which can significantly enhance the fruit setting rate, and after flowering, carry out flower thinning and fruit thinning, leaving a plum every 10 cm or so, which can improve the quality of fresh fruits.

Plums are mainly short-fruiting branches and bouquet-shaped short fruiting branches, so the pruning is based on light pruning and long-term release, ventilation and light transmission. For the first year, the fruiting tree should be mainly shaped, and the amount of pruning should be moderately increased to lay the foundation for a bumper harvest. The perennial growth tree is basically the use of stubbing, shrinkage, branch pulling and other countermeasures to smooth the plant shape and control nutrition.

The pruning stage is mainly in summer and autumn, mainly thinning too dense branches, strong branches and market competition branches, and carrying out topping, taking branches and twisting tips on time to improve ventilation and light transmittance and promote flowering.

Plum tree has strong adaptability to the soil layer, whether it is acidic soil or alkaline soil layer, it can be integrated, the general soil layer is thick, the loose and rich environment is beneficial to the growth of plum trees, and the rows of fruit trees are pruned to plant legumes, vegetables and fruits between the rows. In areas with shallow or barren soil layers, it is easy to intercrop milk vetch and broad beans in autumn, and in early to mid-April of the second year, all ploughing into the soil to create a thick layer of fertile soil.

It is not possible to spray pesticides, because spraying pesticides at this time may cause the flowering failure of the plum tree, and it may also lead to the pollination failure of the plum tree, which will lead to the failure of fruiting.

No, it can be sprayed before flowering, or after flowering, and spraying during flowering may affect the yield of plums.

No, this may affect the flowering of the plum tree, which may affect the final yield, and the consequences are very serious.

Plum trees are sprayed around April in spring, when they are mainly sprayed with peach spirit or cypermethrin to prevent pests and diseases. When spraying the drug, Sun Feng should pay attention to the concentration of the drug, which needs to be diluted with water according to the proportion. If the concentration of the medicine is too high, it is easy to produce large drug damage, and the flowers are easy to fall off.

Dilute and spray according to the instructions, spray once every 20 days or so, and spray three or four times in a row to better prevent pests and diseases.

Plum trees are sprayed at the flowering time, usually with some cypermethrin agents, the main reason is to prevent some insects that eat plum flowers. How to use: The agent is usually sprayed on the trunk of the plum tree and then sprayed into the soil of the plum tree.

Generally, the frequency of spraying is about seven days.

Plum tree has a strong ability to adapt to the soil, whether it is acidic soil or alkaline soil it can adapt, the general soil layer is deep, loose and fertile soil is beneficial to the growth and development of plum trees, and the young trees are suitable for intercropping beans and vegetables between the rows.

In the shallow or barren soil layer, it is easy to intercrop milk vetch and broad beans in autumn, and in early April of the second year, all the soil is plowed into the soil to create a deep fertile soil layer.

For the health of consumers, it is necessary to choose the early stage when the plum is just setting the young fruit, if the seed is almost ripe and misses the opportunity, you can only suffer some losses and wait for the harvest before spraying (midsummer and autumn pest control without scruples).

It is best to use broad-spectrum and relatively low-toxicity dimethoate and dichlorvos alternately (pest resistance), and the spray ratio is prepared according to the instructions (product concentration varies).

What kind of medicine is good for plum trees, and when is it good to take it.

Plum diseases and insect pests mainly include heart-eating insects, red spiders, leaf rollers, stinging moths, etc., and insect pests can be sprayed to kill 1000 times of pine borer or 40% dimethoate 1500 times of liquid for control. The main diseases are bacterial perforation, two-wheel pattern disease, brown spot, powdery mildew, and diseases can be sprayed with lime double Bordeaux solution once in late April or early May, and then sprayed 2 to 3 times every half month. In the event of bacterial perforation, the leaves can be sprayed with 3000 times of 72% agricultural streptomycin soluble powder.

If this situation occurs in plum seedlings and leaves, there are insects, and it takes heavy medicine to work!

"Golden Clothes": Persuade the monarch not to cherish the golden threaded clothes, and persuade the monarch to cherish the youth. There are flowers that can be folded, and there are no flowers and empty branches.

Questions. Seedless oranges like to grow, when to spray, what medicine is best.

1. Once thrips appear in the shed, vegetable farmers should pay attention to the above two points when choosing pesticides for spraying control, but also pay attention to the selection of insecticides as much as possible to choose endogenous and egg-killing functions, and buy several more alternate uses, not a drug to the end, to avoid thrips resistance. In addition, when spraying, it is necessary to hit from one side to the other, and do not hit the east and the west. 2. Thrips have tenderness at the spraying site, and generally like to harm the young leaves, stems, flowers, fruits and other parts of the plant, so pay attention to spraying evenly and finely when spraying, and the ground and back wall should also be sprayed, and some thrips will stay in the gap between the ground and the back wall.

3. Prevention in advance is usually when the thrips are ready to move when the plants are planted and the flowers are in full bloom, at this time the vegetable farmers can prepare some measures to prevent in advance, in addition to spraying in advance to prevent, they can also hang the blue sticky insect board in the greenhouse according to the characteristics of the thrips that are blue, and the height is flush with the crop. The above is the relevant information about thrips provided for everyone, I hope the above information can help you, if you want to know more about the new news of agricultural materials, you can pay attention to: Weidong agricultural network, you can also leave a message to reply to the information you want to know.