What is the most effective medicine to apply when red spiders appear in rake oranges?

I feel that copper preparations such as Bordeaux liquid can be used many times because this pesticide is specifically for spider mites, and it works well.

Spray with pesticides. Because the insect spray can effectively kill those red spiders.

Avithioxone can be used, a pesticide that can be very effective in controlling the growth and reproduction of spider mites.

Spider mites are one of the main pests of rake oranges, and can be sprayed with Setsheng + Kobo Bei + allicin, or sprayed with 1 Baumé of stone flow and pine resin mixture or motor oil emulsion.

The insect pest red spider on citrus fruit trees is a fruit tree insect pest with strong reproductive ability, generally speaking, it occurs in all the growth periods of citrus, the reproductive ability of citrus red spider and the degree of harm are related to the environmental temperature, when the weather temperature is lower than 10 degrees and higher than 32 degrees, the activity ability is significantly reduced, and the harm to fruit trees is also correspondingly weakened.

Control methods of citrus red spidersThe control of red spiders in citrus fruit trees is mainly divided into two categories: drug control and physical control. Physical control is mainly to cultivate the natural enemies of red spider to suppress its occurrence base, and at the same time enhance the tree potential of the fruit tree itself, which can effectively resist the harm of red spider to fruit trees. Only due to the changes in the natural environment and the excessive use of pesticides, relying solely on natural enemies to inhibit citrus red spiders, for most citrus orchards, the effect is not very good, in some ecological orchards, the effect of physical control is obvious, in addition to reducing the cost of pesticide use and labor costs, it also has a direct effect on improving the quality of fruits.

The pesticide control of citrus red spider is now the method adopted by most orchards, and the control agent of red spider will be added in almost all the control processes of citrus pests and diseases. Generally speaking, for each citrus red spider control drug, there will be more than 2-3 single pesticide mixtures, or single products plus compound pesticides, unlike other pest control pests that can be solved by spraying with a pesticide.

In addition to the fact that red spider mites have multiple forms of pesticides that need different insecticidal mechanisms on citrus fruit trees, the main reason is that red spider mites are highly resistant, and it is easy to develop drug resistance and affect the control effect.

For the prevention and control of citrus red spiders, there is no convenient saying that for the prevention and control of citrus red spiders, there has never been a one-and-done pesticide, and some are just constantly improving categories, from single products to compounds, from low doses to high content. The service life of various agents is not very long, generally each new product will be eliminated after 3-5 years, and only a few categories will continue to be used, the more common is a single product such as avermectin or its compound pesticides.

In the control of citrus red spider medicine, in addition to avermectin, the more convenient and continuous use of the agent is mineral oil, because it belongs to the function of physical control, red spider will not produce resistance, can be used many times continuously.

Mineral oil is a substitute for the previous oil emulsion, it has a high degree of emulsification, compared with the oil emulsion, it is easier to water, and will not be separated from water, it is a kind of insect control effect in addition to a certain disease prevention effect, and the ** is relatively low, almost can be mixed with most pesticides without affecting each other.

In short, to say that the prevention and control of citrus red spider is first of all to prevent early, less and less. In addition to containing pesticides that kill insects and eggs, the chemicals used should also be selected and used in combination with the weather temperature. Generally, most of the conventional dispensing drugs are mineral oil plus insecticides, ovicides or avermectin single products and compounds, and then combined with one or two insecticides and eggicidal pesticides.

I think that dadafen is the most convenient, because the effect of this pesticide is very great, it can remove pests and diseases very well, so many people will use this pesticide.

Citrus red spider is controlled with pesticides such as pine resin mixture, avermectin, and gite. Generally, in winter and spring, 18-20 times of pine resin mixture, 10-20 times of pine resin mixture in summer and autumn, or 20-250 times of 99% green mineral oil, 1000-1500 times of avermectin, and 2000 times of 57% gmite.

There are no pesticides, because citrus red spiders are inherently resistant and will refuse some drugs, so any drugs have no effect.

Ethoxy polytrisiloxane (modified silicone) 2,000 times, Guoguang red kill 2,500 times (kill high resistance), pyripropyl ether (kill eggs). Adults die when they dry up. None within 30 days**.

If you want the garden to be clean, don't use 70 copper hydroxide. Citrus ulcer prevention and control, our refusal of copper will make your garden fall into a strange circle of non-stop medication.

In fact, it is quite convenient to directly play pyridoxine and tetramitezine, and this is also a special medicine for the treatment of this kind of red spider.

x0d x0a It is a more scientific prevention and control method to pay attention to the rational use of drugs, cooperate with the release of the natural enemies of citrus red spiders and reduce the dosage to avoid accidental injury to natural enemies.

Citrus red spiders are actually very easy to fight, and the medicine of red spiders is generally contact killing type. There are many factors that go into an outbreak of red spiders. Biology is basically unrealistic.

In recent years, the resistance of long-acting drugs such as snail mite is very heavy, and it is recommended that the red spider is not too single and not too complicated to dispense, and the red spider has the talent to fight without it, if you want to play the tube for a long time, hit the right time and the right measurement, don't remember not to use Bordeaux liquid on citrus will induce the outbreak of red spider. For the first time in the spring of red spiders, I personally recommend 20% hexazole 10ml plus a little fast-acting such as avi. Methyl hydrogen 20ml thirty catties of water.

Basically, the place where the spider mites are not serious is casually managed for a month. When I still want to take a long time, 5 ml of biphenylhydrazine lipid is put on together. Spider mites generally do not break out at high and low temperatures.

Citrus red spider should be caught in three critical periods. 1 is the winter garden to spring before the bud germination, 2 is the spring shoot stage, and 3 is the autumn shoot green period. Use tangerine satisfaction (22% averospirofen + 40% profenofophos) for control.

Spider mites are a very common pest, not only found in citrus, but also on many other fruit trees, such as lemons, plums, and vegetables.

In order to control spider mites well, you first need to have a clear understanding of the living habits of spider mites.

Spider mites can occur 13 generations a year, overwintering with eggs, overwintering eggs generally begin to hatch in March, the first three generations damage the weeds under the tree, and the later generations begin to damage the fruit tree. Spider mites develop more generations a year, reproductive ability, adaptability is very strong, and red spider is a high temperature transmission type, drought and heat is its best development conditions, so red spider control must grasp the period, seize the opportunity, control clean.

Knowing the growth habits of red spiders, we can control them according to their characteristics. Specifically, it is to control the insects before the high temperature comes, before the adults go to the tree. The prevention and control methods are:

Agricultural methods of control. Agricultural control method is to use the ecological balance method, any pest has natural enemies, before the occurrence of a large number of spider mites, we can take the introduction of natural enemies to prevent and control.

The natural enemies of spider mites mainly include deep-spotted mites, ladybugs, small lacewings, small flower bugs, plant mites, etc., which play a positive role in controlling the population of pests, and these insects like to eat red spider larvae.

Ecological control methods can reduce the use of pesticides and reduce environmental pressure, but it is necessary to pay attention to whether the ecological balance is destroyed and species invasion is formed.

Agricultural control methods also include scraping the bark, scraping off the bark with insect eggs in winter and then burning it intensively; It is also possible to get rid of the grass in the orchard in time for spring, and the bugs will starve to death because they can't find food.

In addition to the above control methods, pesticide control can also be adopted. Pesticides can be used Guoguang Luck, Guoguang Red Kill, etc., and the specific use rules refer to the instructions.

It can also be prevented by physical means. Physical control is to tie the trunk with viscose three generations ago, when the insect climbs up the tree will be sticky, so that it can not be harmed, the control rate of this method can reach more than 90%.

To sum up, there are various methods of control of spider mite, and we can understand its growth characteristics and seize the opportunity to prevent and control them.