A common type of insects that are found everywhere is a spider mite. It has about 1270 species and 95 genera. These insects are small and their length reaches no more than 1 mm. He has eyes – two pairs, legs represent 5 segments. For cultivated plants, they are very dangerous and harmful carriers that affect plants, including grapes.
The most common and well-known representative is the ordinary spider mite, which secrete cobwebs. Grapes are often subjected to various diseases and it is not infrequently affected by a variety of pests. Unfavorable weather conditions also harm him. Each year, you can count up to 30% of the losses in case of shrubbery, and if you do not use any measures to destroy pests, you can count up to 50%.
About pests of grapes
Approximately one can count 800 dangerous pests that affect the plant. The most dangerous are the phylloxera, the green leaf litter and ticks. Among them are also considered two species.
Red mite fruit – because it lays its eggs at a very close distance, it is a reddish coating on the young branches of the plant, if you click on it, get a mass of blood-red color. The deposition of eggs can be found on the inside of the grape leaf.
The moth is a common type of insect, it is not afraid of frost and keeps on the leaves that have fallen as well as on the weeds around the plant. The eggs first have a light color, then it turns yellow and gradually turns into orange.
There is another kind of tick – it’s a horn tick. Most often females can be found on the bark, which winter the whole winter on the plant. Larvae persist until the spring, they can be seen from the back of the leaf, they look like small red dots. First an ordinary mite appears on small weeds and over time they move through the grapes.
With its jaw, a spider mite punctures the cells that are at the top and then feeds on what is contained in the cells. Thus, they damage the plant, but still they have toxic saliva that also affects the leaves of the grapes. Damage to the spider mite is in no way different from the damage caused by other mites. When chlorophyll decomposes, light spots appear on the sheets, and then increase with time.
On the site of drying, there are dots of brown color, which resembles the defeat of the tick. When ticks penetrate, the leaves become deformed and become shallow. Those leaves damaged by ticks become curly and in the future you can see tears that appear near the petiole. Then whole leaves have a light brown color, and they gradually fall off. Spider mites affect both young and old vineyards. The location of plants also affects the appearance of ticks. Most often they settle in dry and hot places, but in damp and warm places, they can rarely be found.
How to deal with a spider mite. Before the buds of the grapes are dissolved, it is necessary to treat DNOC or use the drug nitrophene. When the spring growth of plants began, various acaricidal preparations with active substances, such as rogorus, keltan, plektran and others, can be used. To prevent the formation of summer eggs on the leaves, after the buds have blossomed, the grapes are used after 10-12 days.
A very infected bark is often cut and burned. If one and the same drug is used for a long time, the mites develop resistance. It is necessary to alternate the drugs and apply the most effective ones.