How did the red spider in the apple tree field come about?

It is possible that the bacteria in the soil are produced. Plant insecticides should be used in a timely manner, evenly sprayed on plant leaves, and should not be watered during the medication, otherwise there will be no effect.

The presence of spider mites on fruit trees is a relatively common pest, which will absorb plant sap and nutrients in the organism, resulting in problems such as leaf wilting and stunted growth and development of fruit trees. Here are some ways to deal with it:

Rinse with water: Spray strong water pressure on the branches and leaves of fruit trees, especially on the vertically drooping branches in the grass, so that the spider mites can fall down or prevent them from climbing the trees.

Use chassis or stone sulfur mixture: chassis powder and stone sulfur mixture are commonly used insecticides. After diluting the drug 40-fold, spray it on the front and back of the leaves of the fruit tree, and take care to cover the insecticide as much as possible.

Use of plant protection machine: When spraying with plant protection machine, small hole atomization equipment should be used to spray the drug evenly and prevent the inconvenience of red spider death.

Cultivate natural enemies: Introduce the natural enemies of the red spider to control the pest insects in the tree. For example, giant yellow wasps, parasitic termites, arthropods, etc., are all natural enemies of spider mites.

It should be noted that when using insecticides, you should follow the instructions of the selected insecticide, spray correctly and master the skills such as spraying intervals, and wear protective equipment to avoid adverse effects on the human body.

There are several ways to kill spider mites:

1.Use insecticides: You can choose insecticides that kill spiders to spray, pay attention to use Hu Kai according to the instructions and keep a safe distance.

2.Use organic methods: You can use chili, garlic and other ingredients to make organic sprays, and spray the bridge on the affected area to effectively kill red spiders.

3.Wash the affected area: Rinse the leaves of the fruit tree with water or soapy water to wash the red spider away.

4.Increase natural enemies: Introducing predators that prey on spider mites, such as parasitic wasps, aphid wasps, etc., can reduce the number of spider mites.

1. Thiodione.

High activity against mite eggs and mites, low activity against adult mites. The efficacy of thiobenone is relatively slow, reaching the peak effect 7-10 days after application, and the duration of effect is as long as 40-50 days. It is recommended to apply before flowering, and the commonly used dosage forms are 5% emulsifiable concentrate and wettable powder, and the dosage is 1500-2000 times.

2. Tetramitezine.

It has a good effect on egg control, and it also has a certain activity on, but it has a poor effect on adult mites. The effect of tetramitezine is slow, and it can only show good control effect after 10 days of medication, and the effective period is as long as 50-60 days. It is recommended to use before flowering, and the commonly used dosage form is 20% suspension, and the dosage is 1500-2000 times.

3. Pyridoxine.

It has a good control effect on mite eggs, young mites, nymphae mites and adult mites. Pyridoxine kills insects quickly, has good control effect, and has an effective period of more than 30 days. It is recommended to use after flowering, and the commonly used dosage forms are 15% emulsifiable concentrate and 20% wettable powder, and the dosage is 1500-2000 times.

If you find that there are red spiders on the apple tree, you can dilute and spray pyrida mite emulsifiable concentrate or avermectin on the fruit trees, which can be effective**, red spiders reproduce rapidly, and should be well controlled in advance, you can apply lime water on the trunk, or apply a circle of viscose on the trunk, and spray the agent in advance**.

Many people find that there are red spiders on the fruit trees when planting apple trees, so what is the most effective medicine for apple tree red spiders, which can be diluted with pyridoxin EC or avermectin with water, and then sprayed on the infected position on the fruit tree, which can achieve an effective ** effect.

Spider mites are small in size, reproduce rapidly, mainly feed on absorbing the sap of the branches and leaves on fruit trees, usually can be controlled in advance when the branches and buds begin to grow in early spring, apply lime water on the trunk to eliminate most of the eggs, and can also apply a circle of viscose at the trunk position to prevent red spiders from climbing fruit trees.

Red spider in the flowering period of fruit trees, will also harm the new flowers and branches, so that their growth is poor, seriously affect the growth of fruit trees and fruit yield, can be sprayed on the apple tree in advance 20% gram of mite dioxide emulsifiable concentrate 2000 times solution for prevention, to ensure that the breeding environment is clean and ventilated.

When planting apple trees, it should be ensured that it has sufficient light, and the fruit trees should be pruned properly, which can promote the growth of branches and buds, and also enhance the disease resistance of the plants.

Hello, high temperature and drought are the main factors that promote the proliferation of mites and aggravate the damage. According to observations and relevant experts, in the peak period of spider mites &; 40; June-July & 41; , many places for hot and humid weather. In particular, the lack of effective rainfall from late June to early to mid-July reduces the erosion of spider mites and the death of machinery.

The drought in the underground and the hot and sultry weather affect the control of beneficial parasites, which is also one of the main factors for the serious occurrence of spider mites.

Long-term monotherapy.

In the past 10 years, due to the continuous use of the same pesticide and repeated medication, the control of red spider has produced obvious resistance, such as mite death, extermination, and acarin, and the acaricidal effect is greatly reduced compared with previous years. This is also the main reason why fruit farmers report poor efficacy. In addition, high drug concentration, frequent spraying, and short interval also have an impact on the antagonism.

Long-term monotherapy.

In the past 10 years, due to the continuous use of the same pesticide and repeated medication, the control of red spider has produced obvious resistance, such as mite death, extermination, and acarin, and the acaricidal effect is greatly reduced compared with previous years. This is also the main reason why fruit farmers report poor efficacy. In addition, high drug concentration, frequent spraying, and short interval also have an impact on the antagonism.

The medication is not reasonable.

The survey found that due to the change of red spider species, most fruit farmers did not understand the occurrence rules, hazard characteristics, types of drugs and control methods of apple red spiders, and still followed the traditional methods of controlling hawthorn red spiders, and only paid attention to killing adult mites, ignoring the use of agents containing eggicidal ingredients. In particular, in June and July, the overlapping occurrence and rampant period of apple red spider mite, due to the high density of insect population, the wrong way to use medicine, and insufficient control, the red mite was infested.