Grapes are a rather capricious country crop, which is susceptible to attacks by a large number of pests if all rules of agricultural technology are not followed. Experienced and novice agronomists should know their “enemies” by sight. Grape pests and methods of combating them - important aspect agricultural technology.
Today, more than 800 species of insects have been registered around the world that are not averse to eating grapes. Their vital activity has a detrimental effect not only on the fruits, but also on root system, leaves and inflorescences, annual and perennial shoots.
Important. If the winegrower does not develop a competent plant protection system, therapeutic and preventive treatment against pests and diseases, there is a possibility of losing the vineyard altogether.
What to do when holes appear on grape leaves? Many novice agronomists literally panic and waste precious time. Meanwhile, competent actions will help to quickly localize and eliminate the problem. First of all, you need to identify the pest.
Phylloxera grapes
Having identified the pests, you can safely begin to destroy them.
Grape mite
Every winegrower should know that such troubles are always easier to prevent than to “treat.”
Why on grapes holey leaves, they wrinkled, turned yellow, etc. These questions worry many agronomists, especially beginners. Diseases or pests can appear in any case, but the task of the winegrower is to reduce this probability; for this it will be necessary to protect the crops, following all the rules of agricultural technology.
Important: Before irrigating grape bushes, you must first tie the vine to a support, carry out sanitary pruning and remove all damaged/affected leaves.
To prevent the spread of insects, all organic waste must be burned. It is also equally important to break up all large blocks of earth around the plant, level the surface of the soil and correct the depressions in the trellis rows.
Note: Rodents are also capable of causing great damage to vineyards, so before sheltering for the winter, it is recommended to place poisoned baits (sold in specialized stores) near the bushes.
The list of pests that can cause damage to crops is long. But they are dangerous only to those who are careless about their plantings. Subject to all preventive measures And proper treatment, the winegrower has practically nothing to fear. He can easily ensure the longevity of the vineyard.
How to use the table?
It is necessary to start the definition from the first paragraph, comparing the characteristics given in it with the characteristics in another paragraph, indicated by a number in brackets. By comparing the signs, we decide which one is more suitable. If the signs of the first point are suitable, move on to the second. If, on the contrary, the signs of the point indicated by the number in brackets are suitable, then the definition is made from this and the points following it, skipping all the previous ones.
Table for identifying grape pests by the nature of damage to the bush
1(8)
. Kidneys are damaged in the spring.
2(5)
. The kidneys have wide holes eaten away, often with torn edges. The damage is caused by beetles with a short and thick rostrum, fused elytra, and rounded shoulders. Skosari.
3(4)
. All legs are the same length; the head and pronotum are relatively small; femora without ring of scales; elytra shiny with rows of dots; the body, legs and antennae are black. Hind tibia with deep notch; length 6-12 mm. Crimean mower.
4(3)
. The elytra are deeply wrinkled and tuberous, with groups of pearlescent golden scales; legs and antennae are red; length 8.5-11 mm. Turkish mower.
5(2)
. A narrow deep canal has been carved out in the kidney. The long-proboscis weevil often eats away the eyes before the buds open; the body is shiny, blue or green, up to 5.5-9.0 mm long. Pear or grape pipe maker.
6(7)
. The pest's entrance hole with a spider web or small excrement can be seen on the bud. The caterpillar is gray or dirty green, the head is black. Body length up to 10 mm. Grape leaf roller.
7(6)
. The buds dry out and die; damaged by sucking small (up to 1.5 mm) elongated insects with 2 pairs of narrow fringed wings. Thrips.
8(1)
. The generative and vegetative parts of the plant are damaged.
9(17)
. Inflorescences and clusters are damaged.
10(11)
. Damaged inflorescences are combined with leaves; the damage is caused by a grayish-green caterpillar with a black head. Grape leaf roller.
11(10)
. The pedicels of buds and flowers, entangled in cobwebs, are often gnawed, with a caterpillar between them. The stalks are gnawed, together with the berries are tangled in a web, there is a caterpillar inside the damaged berries or in the cobwebs. The caterpillar's head and chest shield are yellow-brown, the body is yellowish-green with sparse light hairs; length 12 mm. Bunch leaf roller.
12(10)
. The head and chest shield are black, the body is light-colored or reddish, with dark setae, length 12-14 mm. Biennial leafroller.
13(14)
. Green bunches with a sooty coating, insects on the ridges and pads, covered with powdery secretions, the berries dry out or wrinkle. Grape mealybug.
14(13)
. There are small brownish galls on the ridges; sometimes there is a pink mosquito larva inside. Grape gall midge.
15(16)
. Relatively deep cavities are eaten away on ripening and ripe berries, damaged by adult hymenoptera insects, the body is yellow-black, the abdomen is pendulous. The head is reddish-yellow, the body is black with yellow and rufous patterns, body length is 25-30 mm. Hornet.
16(15)
. The head is black with yellow, the body without a red pattern; length 15-20 mm. German wasp.
17(9)
. The vegetative parts of the plant are damaged.
18(35)
. Leaves and young shoots are damaged.
19(20)
. The leaves are cut off, only stumps remain, the beetle damages big head and well-developed jaws; the body is convex and shortened, 24 mm long. The nibbled leaves are carried away. Kravchik-golovach.
20(21)
. The leaves are rolled up in the shape of a tube or cigar, damaged by beetles of bright metallic color, the rostrum is long, the antennae are not cranked. Tube screwer.
21(22)
. The leaves are eaten away from the edges in an irregular pattern; the notches often reach the thick veins. Large short-proboscis weevils cause damage. Skosari.
22(23)
. Rough deep eating from the edges is combined with holey. The damage is caused by large lamellar beetles. Marble Khrushchev.
23(24)
. Sixteen-legged caterpillars damage them. The hairs are not feathery and are located on dark warts in a star-shaped manner. The body is gray-yellow above, light below, 12-20 mm long. Older caterpillars eat holes or eat leaves from the edges, leaving veins. Grape moth.
24(25)
. The caterpillar is velvety brown above, with black warts, the side stripes are lemon yellow, with orange warts and tufts of black hairs, the head and legs are black; length 35 mm. American white butterfly.
25(26)
. The damage is caused by a ten-legged slender caterpillar; Eating from the edges is combined with perforating. Grape moth.
26(27)
. Several leaves are connected by a web. There are holes in the woven leaves, the petioles are gnawed, and the caterpillar damages them. Grape leaf roller.
27(28)
. Among the leaves, pulled together by a web or rolled into a tube, there is a caterpillar. The caterpillar's body is greenish, the head is greenish-brown, body length up to 20 mm. Comb or polyphagous leaf roller.
28(29)
. The leaves are mined. The serpentine part of the mine is strongly sinuous, with large excrement, a spot irregular shape; the caterpillar is green, the head and pronotum are brown. Body length up to 4 mm. Grape leaf miner.
29(30)
. There are small light dots on the leaves that merge into spots, the leaves turn gray and die; damaged by greenish, small (2.5-3 mm) insects, head and scutum with dark spots; elytra with red stripes. Grape leafhopper. Possible damage by other leafhopper species.
30(31)
. Galls on the underside of the leaf, pinkish, round, inside are yellow larvae with piercing-sucking oral apparatus or eggs. Vine phylloxera (leaf form).
31(32)
. On the underside of the leaves there are felt spots that are whitish, brownish, or reddish. On the upper side there are small swellings and bulges of various sizes; damage flares with two pairs of legs. Grape felt mite (itching).
32(33)
. On the leaves there are small, discolored necrotic spots or other acarinous tissue lesions. Ticks.
33(34)
. Young shoots are damaged. Shoots are damaged under shelters after planting or in schools. Plants are gnawed at the horse's neck. Gnawing owls.
34(33)
. The shoots of grape seedlings are gnawed or the pest's entrance hole is visible in the root part. Click beetles and darkling beetles.
35(18)
. Trunks, skeletal branches and roots are damaged.
36(40)
. Trunks and skeletal branches are damaged.
37(39)
. The damage is caused by larvae with an elongated body, narrowing towards the rear end. Under the bark and in the wood of the trunks there are wide passages clogged with stubs in the form of shavings. On the surface of the trunk there are round flight holes of the beetle. They damage larvae with a more or less flattened body, an expanded chest, and short or absent legs. Mustache. Grapes are damaged by: large fruit barbel, variable, polyphagous, etc.
38(37)
. The passages inside the trunks are slightly flattened and filled with drill flour. Flight holes of beetles on the bark are elliptical in shape.
The damage is caused by a legless whitish larva, the prothorax is greatly expanded, the head is small; on the last segment there are 2 toothed processes. Body length up to 20 mm. Vine narrow-bodied borer.
39(37)
. Larvae with other symptoms cause damage. The larvae are C-shaped, with three pairs of legs, and hairy. The body is somewhat widened in front. Always only in wood. False bark beetles. The most common species are the grape borer and other species.
40(36)
. The roots are damaged.
41(42)
. There are thickenings on the root lobes and small roots. Beak-shaped thickenings on young roots - nodosites - Grape phylloxera (root form).
42(43)
. The thickenings on the roots are nodular, bead-shaped, with small worms inside. Root nematode (eelgrass).
43(44)
. Woody roots are damaged. On the roots there are tuberosity swellings and relatively deep cracks. Grape phylloxera(root form).
44(45)
. The roots are eaten by beetle larvae with three pairs of legs. Longitudinal wounds have been eaten away, mainly on the main root extending from the root stem; Often the gnaws are very deep, especially from the root collar of seedlings. Large light fleshy larvae of lamellar beetles damage. Marble Khrushchev.
45(46)
. Wounds on the roots in the form of winding furrows or spirals. The damage is caused by a small bark beetle larva. Grape dropsy.
46
. The roots are chewed by weevil larvae. The larvae are legless, white, the body has brown bristles, and the head is light brown. Body length up to 12 mm. Skosari.
As you know, in addition to diseases, grapes are also affected by various pests. And with pests everything is much simpler than with fungal diseases. They are easier to detect and quickly destroyed using effective insecticides or acaricides. But, despite this, there are several types of pests that are especially dangerous for grapes. The most dangerous pests that often infect grapes are: phylloxera (namely grape root aphids), mites and leaf rollers. And in general, any other pest has no place in the vineyard, since it reduces the likelihood of getting a good harvest.
There are many pests that attack grapes and are common in our area, these include:
This pest can attack other crops and also spread from them to grapes, so there is always a high probability of infection. Another name for this pest is the leaf beetle. Outwardly he looks like small cockroach and has an oval body shape, up to 4 mm long. In early spring these bugs jump and gnaw young green shoots of grapes. Then they lay eggs under the leaves, from which after a while larvae emerge and gnaw small holes in the leaves.
The first treatment is done with a conventional insecticide on young shoots of grapes. This is done in order to prevent the laying of eggs and to destroy the pests themselves. Another insecticide treatment should be carried out when holes appear on the leaves of the grapes.
This pest appears during the period when leaves begin to actively grow on the grapes. At first it is a small butterfly with red-brown wings with a span of up to 4 mm. Some time after the moth emerges, it lays eggs under the leaves, from which a small caterpillar eventually emerges. These larvae make many tunnels deep into the leaf. Over time, they damage the leaf so much that it dies. Through the active death of leaves, you can lose a large part of the harvest, so this pest must be actively combated.
If damaged leaves appear at the end of May, you need to apply a systemic insecticide against caterpillars. To combat the pest, you need to do preventive procedures in the fall. To do this, you need to burn all the fallen leaves and dig up the ground around the grape bushes.
This is a sedentary pest that feeds on grape juice. This pest settles on leaves and shoots and, with its piercing and knotting apparatus, sticks to the green areas of the plant and spends its entire life there. It is quite difficult to fight adult pests, since they secrete a protective substance that prevents poisons and birds from reaching this pest. Each female pest can lay more than 2,000 eggs in her lifetime. From these eggs young, mobile individuals emerge, which quickly spread to the free areas of the grape bush. Only at this moment can they be effectively dealt with, but it is at this time that they are hardly noticeable. This pest greatly reduces the productivity of grape bushes and its ability to resist disease.
If this pest has infested your vineyard, then in the spring, before the leaves bloom, you need to treat the bushes with a systemic insecticide. If you don’t have a lot of bushes, then you don’t need any insecticides; you can mechanically remove all pests. Just take some tough mittens and collect them all. If you do this periodically, you can do without chemicals.
To combat these pests, you need to remove damaged shoots and treat the plant with an insecticide. If you carry out scheduled preventive treatments, the pest will not appear.
This pest is a large (wingspan up to 10 mm) dark gray butterfly with many dots and streaks on the front wings. At the beginning of summer, these butterflies lay eggs in cracks and in the bark of shoots and in the trunk of a bush. The caterpillars, which appear after a while, are red and have bad smell. All together they bite into the shoot and make a common tunnel, where they spend the winter. In the spring, they gnaw out large tunnels, and each caterpillar comes to the surface and becomes a butterfly. The passages they gnaw out can reach 70 cm in length. In this case, the shoot dies.
To combat this pest, the most important thing is timely identification of the pest; for this, you need to periodically inspect the grape shoots. If a round hole is found on the vine, then you must cut the shoot down to healthy tissue and burn the infected part. If you need to preserve the vine, you can widen the round hole with a wire and inject insecticide into it with a syringe and then cover the hole with garden pitch or clay.
This pest is quite common and causes considerable harm to the plant if it is not dealt with in time. This pest is often called grape itch; its body is yellowish-green and its body size does not exceed 0.6 mm. These pests overwinter in fallen leaves or under bark. In spring, when the average daily temperature becomes more than 15 degrees. The females begin to lay eggs under the leaves. In less than a week, larvae appear and begin to actively feed on grape juices. Two weeks after the appearance of the young, the mites are ready to reproduce. These pests are very prolific, so there can be more than 12 generations of mites in one season. And given that one female lays up to 150 eggs, the bush is very quickly affected by this pest. In places where the leaves are punctured, light-colored spots appear, which dry out over time, and the leaf may die. In order to maintain high productivity of grape bushes, this pest must be effectively combated.
If a grape bush is affected by these pests, you need to treat the leaves with acaricides at intervals of 7-12 days. These pests are easy to destroy, but to reduce the likelihood of their appearance in the fall, be sure to destroy all fallen leaves. It is advisable to collect it and burn it.
This pest feeds on the most top layer grape leaves. The size of these mites is insignificant and can be no more than 0.2 m. Typically, adult individuals overwinter under the bud scales. In the spring, they move from their hiding places to green leaves, namely to their lower part. Since the pests are small and feed only on the top layer of the lower part of the leaf, they do not cause significant harm to the plant. In this case, even severely damaged cells do not die.
This pest is so small that it cannot be seen. Despite its size, it causes significant damage to the plant. Pests usually overwinter under the bud scales; during wintering they can cause significant damage to the buds. The leaves of the grapes on which these pests settle are deformed, wrinkled and torn into strips. These damages are similar to the damage the plant experiences when infected with viral diseases.
Preventive control methods include removing old bark from grape bushes; before buds bloom, they must be treated with colloidal sulfur. If pests begin to appear on the leaves, it must be treated with any acaricides. Such treatments should be carried out 2-3 times, with an interval of 7-12 days.
These pests cause greatest harm all green parts of the grapes and therefore they need to be destroyed in time. Leafworms include:
This pest is a butterfly with a wingspan of up to 3 cm. The wings of the butterfly are dark brown with a copper sheen at the edges. The butterfly itself does not cause any harm to the grapes, and its offspring leaves only skeletal veins from the leaves. Some time after the appearance of the caterpillars, they begin to form cocoons in a special nest from grape leaves gathered into a ball. After three weeks, new butterflies will fly out, each of which can lay up to 400 eggs.
This pest is an olive-brown forearm butterfly. Its wingspan can reach 15 mm. The caterpillar, which appears a week after laying eggs, is green in color and very mobile. At the same time, pests eat everything: leaves, flowers, ovaries, green berries, wrapping them in cobwebs. Damaged parts of the plant fester and can be affected by various diseases.
In spring, a butterfly with light yellow wings flies out and lays eggs under the leaves. The caterpillar, which appears a week after laying, is first light green, then red with a black head. She eats everything, from buds to green berries. When damaged, the berries fester and infect neighboring ones. At the same time, grape yields can decrease by up to 90%.
The best remedy for this pest is prevention. To do this, it is necessary to clear the vineyard of organic residues and burn them. If in the spring butterflies fly around your vineyard, similar to known pests, then you need to treat the plants with any insecticide known to you. If a caterpillar appears, it is necessary to apply biological agents pest control.
This pest is considered the most dangerous for grapes; it is also called grape aphids. Usually this pest is carried along with planting material. Also, a grape bush can become infected by the wind or through the water with which you water your plants.
During their lives, these pests can change their appearance repeatedly. They periodically move from the underground to the above-ground parts of the bush. Usually the bush dies due to infection of punctures made by pests on the roots of the plant.
Since these pests are very dangerous for grape bushes, you need to use effective methods fight them. The most common methods of control are:
From the above it is clear that there are many pests that cause significant damage to the vineyard. Some of them are very dangerous, some are less dangerous. Despite the degree of danger that the pest causes to the plant, it must still be dealt with so that the plant does not weaken and become infected with some kind of fungal or bacterial disease.
Owners of their own garden tend to grow most vegetables and fruits themselves. This eliminates the presence of chemicals and nitrates in the product. To obtain a high-quality, healthy harvest, you need to invest a lot of time and effort. Gardeners often notice holes in the leaves of grapes. A negative phenomenon can upset both novice summer residents and experienced gardeners. Therefore, it is recommended that when the first signs of a disease are detected, you immediately begin to look for the cause of its appearance and select effective methods to save the crop.
Holes on grape leaves are formed as a result of exposure to the following insects:
For effective fight Insecticides are used to deal with insect pests that leave holes on grape leaves. The most effective are:
Systemic drugs are used for both treatment and prevention. There are also an intestinal group of drugs (Chlorofos, Fozalon, Volaton), and a contact group (Inta-Vir, Actellikt, Tsitkor). Choose the most suitable remedy Every gardener can do it. The main thing is to focus on the degree of damage to plantings and the resistance of pests to a particular drug.
By following the rules of agricultural technology, cultivation and maintenance of a vineyard, you can grow a large number of delicious juicy berries own plot. Constant care for plants is the main task of a gardener.
As you know, in addition to diseases, grapes are also affected by various pests. And with pests everything is much simpler than with fungal diseases. They are easier to detect and quickly destroyed with effective insecticides or acaricides. But, despite this, there are several types of pests that are especially dangerous for grapes. The most dangerous pests that often attack grapes are: phylloxera (namely grape root aphids), mites and leaf rollers. And in general, any other pest has no place in the vineyard, since it reduces the likelihood of getting a good harvest.
There are many pests that attack grapes and are common in our area, these include:
This pest can attack other crops and also spread from them to grapes, so there is always a high probability of infection. Another name for this pest is the leaf beetle. Outwardly, it looks like a small cockroach and has an oval body shape, up to 4 mm long. In early spring, these bugs jump and gnaw young green shoots of grapes. Then they lay eggs under the leaves, from which after a while larvae emerge and gnaw small holes in the leaves.
The first treatment is done with a conventional insecticide on young shoots of grapes. This is done in order to prevent the laying of eggs and to destroy the pests themselves. Another insecticide treatment should be carried out when holes appear on the leaves of the grapes.
This pest appears during the period when leaves begin to actively grow on the grapes. At first it is a small butterfly with red-brown wings with a span of up to 4 mm. Some time after the moth emerges, it lays eggs under the leaves, from which a small caterpillar eventually emerges. These larvae make many tunnels deep into the leaf. Over time, they damage the leaf so much that it dies. Through the active death of leaves, you can lose a large part of the harvest, so this pest must be actively combated.
If damaged leaves appear at the end of May, you need to apply a systemic insecticide against caterpillars. To combat the pest, you need to do preventive procedures in the fall. To do this, you need to burn all the fallen leaves and dig up the ground around the grape bushes.
This is a sedentary pest that feeds on grape juice. This pest settles on leaves and shoots and, with its piercing and knotting apparatus, sticks to the green areas of the plant and spends its entire life there. It is quite difficult to fight adult pests, since they secrete a protective substance that prevents poisons and birds from reaching this pest. Each female pest can lay more than 2,000 eggs in her lifetime. From these eggs young, mobile individuals emerge, which quickly spread to the free areas of the grape bush. Only at this moment can they be effectively dealt with, but it is at this time that they are hardly noticeable. This pest greatly reduces the productivity of grape bushes and its ability to resist disease.
If this pest has infested your vineyard, then in the spring, before the leaves bloom, you need to treat the bushes with a systemic insecticide. If you don’t have a lot of bushes, then you don’t need any insecticides; you can mechanically remove all pests. Just take some tough mittens and collect them all. If you do this periodically, you can do without chemicals.
To combat these pests, you need to remove damaged shoots and treat the plant with an insecticide. If you carry out scheduled preventive treatments, the pest will not appear.
This pest is a large (wingspan up to 10 mm) dark gray butterfly with many dots and streaks on the front wings. At the beginning of summer, these butterflies lay eggs in cracks and in the bark of shoots and in the trunk of a bush. The caterpillars, which appear after a while, are red in color and have an unpleasant odor. All together they bite into the shoot and make a common tunnel, where they spend the winter. In the spring, they gnaw out large tunnels, and each caterpillar comes to the surface and becomes a butterfly. The passages they gnaw out can reach 70 cm in length. In this case, the shoot dies.
To combat this pest, the most important thing is timely identification of the pest; for this, you need to periodically inspect the grape shoots. If a round hole is found on the vine, then you must cut the shoot down to healthy tissue and burn the infected part. If you need to preserve the vine, you can widen the round hole with a wire and inject insecticide into it with a syringe and then cover the hole with garden pitch or clay.
This pest is quite common and causes considerable harm to the plant if it is not dealt with in time. This pest is often called grape itch; its body is yellowish-green and its body size does not exceed 0.6 mm. These pests overwinter in fallen leaves or under bark. In spring, when the average daily temperature becomes more than 15 degrees. The females begin to lay eggs under the leaves. In less than a week, larvae appear and begin to actively feed on grape juices. Two weeks after the appearance of the young, the mites are ready to reproduce. These pests are very prolific, so there can be more than 12 generations of mites in one season. And given that one female lays up to 150 eggs, the bush is very quickly affected by this pest. In places where the leaves are punctured, light-colored spots appear, which dry out over time, and the leaf may die. In order to maintain high productivity of grape bushes, this pest must be effectively combated.
If a grape bush is affected by these pests, you need to treat the leaves with acaricides at intervals of 7-12 days. These pests are easy to destroy, but to reduce the likelihood of their appearance in the fall, be sure to destroy all fallen leaves. It is advisable to collect it and burn it.
This pest feeds on the topmost layer of grape leaves. The size of these mites is insignificant and can be no more than 0.2 m. Typically, adult individuals overwinter under the bud scales. In the spring, they move from their hiding places to green leaves, namely to their lower part. Since the pests are small and feed only on the top layer of the lower part of the leaf, they do not cause significant harm to the plant. In this case, even severely damaged cells do not die.
This pest is so small that it cannot be seen. Despite its size, it causes significant damage to the plant. Pests usually overwinter under the bud scales; during wintering they can cause significant damage to the buds. The leaves of the grapes on which these pests settle are deformed, wrinkled and torn into strips. These damages are similar to the damage the plant experiences when infected with viral diseases.
Preventive control methods include removing old bark from grape bushes; before buds bloom, they must be treated with colloidal sulfur. If pests begin to appear on the leaves, it must be treated with any acaricides. Such treatments should be carried out 2-3 times, with an interval of 7-12 days.
These pests cause the greatest damage to all green parts of the grapes and therefore need to be destroyed in time. Leafworms include:
This pest is a butterfly with a wingspan of up to 3 cm. The wings of the butterfly are dark brown with a copper sheen at the edges. The butterfly itself does not cause any harm to the grapes, and its offspring leaves only skeletal veins from the leaves. Some time after the appearance of the caterpillars, they begin to form cocoons in a special nest from grape leaves gathered into a ball. After three weeks, new butterflies will fly out, each of which can lay up to 400 eggs.
This pest is an olive-brown forearm butterfly. Its wingspan can reach 15 mm. The caterpillar, which appears a week after laying eggs, is green in color and very mobile. At the same time, pests eat everything: leaves, flowers, ovaries, green berries, wrapping them in cobwebs. Damaged parts of the plant fester and can be affected by various diseases.
In spring, a butterfly with light yellow wings flies out and lays eggs under the leaves. The caterpillar, which appears a week after laying, is first light green, then red with a black head. She eats everything, from buds to green berries. When damaged, the berries fester and infect neighboring ones. At the same time, grape yields can decrease by up to 90%.
The best remedy for this pest is prevention. To do this, it is necessary to clear the vineyard of organic residues and burn them. If in the spring butterflies fly around your vineyard, similar to known pests, then you need to treat the plants with any insecticide known to you. If a caterpillar appears, it is necessary to use biological pest control agents.
This pest is considered the most dangerous for grapes; it is also called grape aphids. Usually this pest is carried along with planting material. Also, a grape bush can become infected by the wind or through the water with which you water your plants.
During their life, these pests can change their appearance several times. They periodically move from the underground to the above-ground parts of the bush. Usually the bush dies due to infection of punctures made by pests on the roots of the plant.
Since these pests are very dangerous for grape bushes, it is necessary to use effective methods to combat them. The most common methods of control are:
From the above it is clear that there are many pests that cause significant damage to the vineyard. Some of them are very dangerous, some are less dangerous. Despite the degree of danger that the pest causes to the plant, it must still be dealt with so that the plant does not weaken and become infected with some kind of fungal or bacterial disease.
