Lemon tree scale insect is the main insect pest, what are the damage of lemon tree scale insect inse

Scale insects. There are many species, and in the north fruit trees have their hosts, mainly harming branches, leaves, fruits, etc. In terms of prevention and control, the main pre-germination spray sulfur mixture, machine kagura.

During the growing season, spray 3,000 times the chlorpyptore, avermectin.

Pyrazole xiong. Absorbent cotton can be dipped in 15% alcohol to scrub, combined with the removal of coal stain disease; It can also be dipped in vinegar and scrubbed, the insects will be restless, at this time spray insecticides, there are many kinds on the market that specialize in dealing with scale insects.

the drugs; Carbofuran can also be buried.

Scale scale insect is a kind of agricultural pest that makes our farmers who plant fruit trees a headache and is very harmful, and the common ones are red round scale, brown round scale, Kang piece scale, sagittal scale and blowing scale. Scale insects are more pests that occur on fruit trees, both north and south fruit trees have occurred, mainly to absorb the juice of crops for a living, will cause the branches and leaves of fruit trees to wither, serious will cause fruit tree coal stain disease to occur, because scale insects have a special shell and waxy layer, large cotton scale, paramecium scale damage tree generally visited, and Kang's mealybug is the most hateful, it not only sucks buds, leaves, fruits, branches, and roots! Excretion causes coal pollution and affects photosynthesis.

In recent years, the scale insects are very arrogant, they are not a vigorous outbreak, but the silent expansion of moisturizing things, in fact, you will find that the scale insects in the farmer's orchard can be solved as long as you pay attention to it, the difficulty is in the green belt, especially the public green belt, in late March to early April, clean up the orchard, eradicate the source of the insect in the egg stage, carefully scrape off the old bark of the fruit tree, and find the overwintering place of the pest. At the same time, spray 5 degrees of stone sulfur mixture.

Scale insects are very harmful to fruit trees, and the leaf bark of fruit trees that reproduce quickly can be injured, and it will affect the yield of fruits. Winter month lime water.

Brush on the roots, about a meter up from the roots, how to get rid of scale insects, soak them in a bottle with a cigarette butt, after three weeks.

Anger on fruit trees, scale insects, adults and nymphs.

By sucking the juice, it damages branches, leaves and fruits. After being killed, the branches are weak, and the leaves are thin and curved, causing flower and fruit drops. In severe cases, it causes the death of branches and trees, and is accompanied by bituminous coal disease. The prevention and treatment is not timely, and the speed of infection is very fast.

If there are scale insects on the lemon tree, it means that your lemon is starting to develop slowly, and this organism will also affect the normal growth of the lemon tree and affect the yield of the lemon tree, and it is also very contagious, if it is not timed, it will infect the entire orchard.

The main damage is that the first leaf is yellowish with white-brown spots, the second is relatively dry, and the third is that the insect sucks the sap of the dry tree.

It is easy for fruit trees to grow badly, and at the same time make farmers lose a lot of property, make these fruits in the market more expensive, disrupt the market, and increase economic development.

It may cause mucosal scabs, lemon canker as well as lemon soot disease, lemon skirt rot, causing a large reduction in the yield of lemon trees.

The control methods for lepidopteran insects are as follows. Mix the wine with the water in a 1:2 ratio.

Water the top of the potting soil thoroughly to achieve the purpose of pest control. Lepidopteran insects begin to move in spring when the room temperature is 7. It can be watered once in mid-April, and then once every half a month or so, 4 times in a row.

Soak a small cotton ball in vinegar with 50 ml of vinegar (rice vinegar), and gently wipe it on the stems and leaves of the infested flowers and trees with a wet cotton ball to wipe off the scales. This method is convenient and safe, which can not only achieve the purpose of insect control, but also make the damaged leaves regreen and bright. Gently and repeatedly wiping the diseased plant with a fine silk can remove the scale insects and can be very clean and thorough.

<> such as rubbing the diseased leaves of orchids with aloe vera essence, not only can get rid of the scale insects, that is, the larvae that are not clear to the naked eye, but also completely killed, and the second year is rarely found to have scale insects, this method is simple, safe and effective. Prepare the mother liquor with diesel, washing powder and water in the ratio of 10::6, at this time the mother liquor contains 60%, which is 30% of the liquid medicine diluted with milk, water and oil, and carefully spray the scale insects on Milan, kumquat and cycad.

After one week, most of the scale insects changed from fresh orange to shriveled state, indicating that this method has a good control effect on scale insects. Or go directly to the flower and bird market to buy the flower god and other agents, spray them in proportion, mix them, and water the roots once.

Highly toxic organophosphorus and forbidden pyrethoxil are active ingredients, and in order to reflect the rapid compounding, dinitrofuran or thiazinone is effective. Theoretically speaking, the first rain around May Day, the scale insects began to sting, the drug effect of this node is the best, the actual production should be based on the different periods of the crop, grapes are generally used before and after flowering, but it should not be too late, too late will affect the fruit surface. But from harvest to before frost fall, it can also be **lepidopteran insects.

At this time, the grapes have been sold out, there is no need to worry about pesticide residues, and there will be no major drug damage, so you can start at will. Lepidopteran insects overwinter in the crevices of old bark, and large flood irrigation can reduce the base number before putting on the shelf, and it is best to remove the old bark around the roots in time. It can be placed when the garden is cleared.

Be sure to choose the right pesticide and configure the right ratio to spray on the crop to effectively kill the insect, or you can choose to scrub with vinegar, assist in the use of insecticides, or you can use absorbent cotton dipped in 15% alcohol to scrub and effectively remove.

Abamectin can be used for prevention. It is necessary to eradicate parasites regularly, to reduce the problematic juice in a timely manner, and also to control it through biology.

Stone sulfur mixture can be sprayed. It can also be scrubbed with alcohol, sprayed with insecticides appropriately, or cleaned with vinegar.