Recently, many farmers who grow vegetables and fruit trees have asked how to control field crops
"Mites are too difficult to control, repeated medicine throughout the year can not be prevented, and in recent years the number of sprays is increasing, the concentration of dosage is increasing, but it seems that the situation of mites on field crops is becoming more and more serious, and the difficulty of control is increasing!"
There are basically three types of mites, namely red spiders, two-spotted leaf mites and tea yellow mites, and two-spotted leaf mites can be called white spiders.
Red spiders, yellow spiders have the same characteristics as white spiders:
The three are caused by adult mites, juvenile mites, nymph mites cluster leaves, tender tips, fruit peel on the juice absorption hazard, resulting in leaf fall, fruit drop, especially the leaf damage is the most serious, resulting in green loss, eventually falling off, seriously affecting tree potential and yield.
Red, yellow and white spiders are different:
1. Red spider: the victim leaves are densely gray-white needle-sized dots, and even the whole leaf is gray-white.
2. Yellow spider: the murdered leaf loses green to form a large yellow spot, the back of the leaf is concave, the front protrudes, and the depression is often covered with silk mesh.
3. White spider: for the damage of scorched paste, a layer of white silk-like silk web is formed on the front of the leaf or at the branches.
Take red spiders as an example to talk about the reasons why mite pests are difficult to prevent and treat
1. It can occur all year round and has strong reproductive ability
Although the main outbreak period is in spring and autumn, red spiders can occur all year round. Female mites of red spider spiders can not only reproduce hermaphroditically, but also perform solitary reproduction – that is, they do not need a male mite to lay eggs and hatch.
2. Easy to produce drug resistance
Due to factors such as long-term use of chemical pesticides and high breeding frequency of red spiders, chemical pesticides often have no prevention and control effect on red spiders due to drug resistance.
Resistance of red, yellow and white spiders:
White spider resistance> yellow spider resistance> red spider resistance
3. Medication errors
Red spiders are not insects, they belong to the order Arachnidae, and the wrong use of pesticides for control is not only very effective, but also harms natural enemies. So be sure to choose targeted means.
In recent years, although biphenylhydrazine, ethazolenitrile and other highly effective acaricides have emerged. However, the problem of homogenization of acaricides remains serious.
In this regard, Henan Fertile Soil Biology launched Manbiqing,
Special biological additives for acaricide - Manbiqing - fertile soil organisms
Product form: water agent
Net weight: 100g
This product is used with acaricide to improve the efficiency of acaricide, reduce the amount of chemical pesticides used, and reduce pesticide residues. This product is gingerol, gingerol, which has permeability, adhesion and ductility, can quickly dissolve the waxy layer of the epidermis of pests, and can promote the rapid entry of pesticides into the insect body, so as to achieve the purpose of quickly killing red spiders, white spiders and tea yellow mites.
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