Spider mite on grapes.

The spider mite on grapes is a very small insect. It is red in color. In the course of its vital activity, pinkish and reddish spots are left on the foliage. Also, foliage can change its color, dry out and fall off over time.

A detailed description of the spider mite on grapes

Spider mite on grapes: pest photo

The spider mite is a family of arachnids. In their size, they are very small, their body can reach a length of half a millimeter. They can be yellowish or reddish. They live mainly on the back of the leaf plate, weaving their little web. Hordes of this pest can attack the vineyard at once, if there are comfortable conditions for their development and reproduction.

Spider mite development cycle

There are several stages. After laying, eggs are formed. A larva hatches from the egg, which, after about two or three, transforms into an adult insect. Four to seven generations can be hatched in one season. This is influenced by weather conditions.

Spring activity

In the spring, the larvae of the fruit-red mite begin to appear. They can be viewed on leaf blades, in the form of small red dots. A simple spider mite, it lays its eggs on weeds. When the larvae hatch, they move on their own to the grape plants.

Types of spider mites

There are several types of mites that can infect a grape crop.

The first species is the hornbeam spider mite.

This species bites through a leaf plate, and then sucks out the nutritious juice from it. And it is because of this that the foliage of the plant becomes dehydrated, deprived of nutrients, dries up and falls off.

The second species is the red fruit mite.

He weaves a very small web. Spends the winter in a kind of cocoon, it can be seen on a wooden surface. Looks like reddish growths. In the summer, the female lays eggs on the lower part of the leaf plate.

The third type is an ordinary spider mite, or grape itch.

Begins to lay eggs during the growing season. He spends his winter in the bark of a grape tree, or in fallen leaves. One female can lay seventy to one hundred and fifty eggs.

How to understand that a spider mite attacked grapes

Spider mite on grapes: photo

• Lightened disproportionate specks are formed on the leaf blades.
• A brown dot appears in the core of the speck. This is due to the fact that those cells that have been damaged by the pest begin to dry out.
• As soon as pests appear on the crop, the foliage stops growing, that is, it remains small in size.
• Shoots also stop growing and appearing.
• The foliage begins to curl up, change its color, dry and fall off.
• You can also notice a small cobweb on the back of the leaf plate. As it develops, spider webs will form on several leaves as well as stems.
• When laying eggs, growths of a red-orange hue will be visible along the perimeter of the veins. These are eggs. Over time, a larva, that is, a nymph, hatches from them. When she sheds about two to three times, she will already be an adult.

Spider mite on grapes: video about the pest

Spider mites can appear on grapes of any age. Affect crops, it will be in accordance with their variety, soil structure, the state of the culture itself and its nutrition. Also, the place where the grapes grow plays a big role. In dry and warm weather, spider mites will spread most actively. His attack threatens that the grape will develop worse and become weak. It can appear through a person or animal, which can bring it on its soles or paws, the tick itself, or its eggs. The eggs remain viable for five years.

Spider mite on grapes: control methods

Spider mite on grapes: photo

About biological control measures.

In the fight against spider mites on grapes, insect predators, namely entomophagous mites, can help. Insect predators can be purchased at specialized garden stores.

In the fight against spider mites on grapes, it is recommended to acquire such predators as:

• phytoseiulus;
• amblyseius california;
• ambliseius mackenzie;
• western metaseiulus.

These species will feed on laid eggs, as well as insect larvae. Some species can also devour adult specimens. These predatory species are quite voracious and also reproduce rapidly. One female can eat up to twenty-twenty-five pests in just twenty-four hours, she also does not forget to lay eggs, about two to six pieces. These predators live at about eighteen to twenty-five days.

But since they lay eggs in the course of their life, from which the larvae later hatch, these larvae also continue to eat pests. The productivity of these organisms is often compared with chemicals from the acaricidal group. This comparison is due to the fact that these predators quickly cope with pests. The most comfortable conditions for life are considered to be warm and moderate air humidity. They can also be replaced with some kind of insect, like a lacewing. They are advised to resort to their help, when your crops grow in an enclosed space. But if the plantation is large, it would be wiser to resort to chemicals.

Plant control

These measures are rather preventive and also deterrent. There are some plants whose smell is not pleasant for the spider mite. Such phytoncidal crops are: onions and garlic. They can be planted between beds and holes.

Preventive measures.

In the fight against insect pests, preventive measures are very important.

• If the plant is not very strongly affected, then alternative methods can be used to counter it.
• If the plant is severely affected, then you should seek help from chemicals.

These measures should be collaborative and ongoing.It is they who will help protect the culture from various insect pests. But if the agricultural technique is incorrect and, and the care is insufficient, then the yield may drop to fifty percent of the total mass. If the plant is already sick, then not preventive measures are needed, but correct and timely treatment.

There are several recommendations for preventive measures.

• It is very important to follow all agrotechnical rules that are necessary for the active growth and development of the bush.
• It is necessary to conduct a timely inspection of the deciduous part, as well as the entire plant for the presence of pests.
• When new seedlings appear, they also need to be carefully examined, and also quarantined in order to identify the possible presence of parasites.
• Based on the fact that this pest does not like an increased percentage of air humidity, timely spraying of the crop must be carried out.
• It is necessary to develop a suitable watering regime, as well as feed and fertilize the plants in a timely manner.
• You need to weed your garden in a timely manner. That is, to destroy various weed crops. There are those types of mites that hatch on weeds, and then move on their own to fruit and berry plants.
• It is necessary to tie up the grapes at the time. That is, you need to ensure that its shoots do not touch the ground. This can be fraught, not only with the defeat of insect pests, but also with fungal infections.
• In the autumn, after harvesting, you need to remove all the fallen leaves, as well as cut off the dried parts. This is because some species of mites spend their winter in fallen leaves.
• With the onset of the autumn period, you need to dig the soil. Those insects and egg-laying that spend the winter in the soil, once outside, will die from the cold.
• If you notice the appearance of this pest, then immediately spray your crop with a soapy solution. This will certainly not kill them all, but it will significantly reduce their numbers. Then proceed with the necessary processing measures.

Spider mite on grapes: fighting with the help of folk recipes

Spider mite on grapes: photo

A large percentage of garden lovers do not like to use chemicals in the fight against insect pests. And they give their preference to folk and organic methods.

Fighting spider mites with horseradish infusion.

To do this, you need to chop the foliage, as well as the shoots, and then fill the bucket by thirty percent, and fill the rest with water. Mix all this thoroughly and let it brew for sixty minutes. Roughly the same attitude can be made from the horseradish root system. But then you need to take a couple of times less raw materials.

Fighting spider mites with dandelion infusion.

In this case, you need to take thirty to forty grams of dandelion root system, grind it and pour a liter of clean water at room temperature. Then let it brew for several hours and you can start spraying.

How to use folk infusions.

There are some tips and an explanation. It is necessary to process the plant with the help of infusion right away, because the more it stands idle, the more it will lose its beneficial properties. You can also add small shavings of laundry or baby soap - this will add stickiness. With the addition of soap, the infusion will last a little longer on the hardwood plates, and will also extend its productivity period.

Many people believe that traditional methods are the safest, but others say that protective clothing should be used. This is due to the fact that these plants, which are used to fight insects, have a certain amount of toxic components in their composition. That is why protective equipment still needs to be used. And also after processing, take a shower and wash your hands thoroughly.

Fighting with chemicals.

If the plant is severely affected, then there is a danger of losing the entire crop. With a massive foray of a spider mite, preventive and folk methods will no longer help. You need to resort to chemicals. If you do not start processing and drive insect pests from your plantations, then after twenty-four to thirty-six months, nothing may remain of it.

The most effective and well-known insect pest control chemicals.

The chemical is acarin or agravertine.

This species belongs to the contact-intestinal group, it can affect a large number of insect pests. It will not pollute the environment. When destroyed, it falls directly into the ground. How to make: one or two milliliters of the product must be diluted in one liter of clean water at room temperature. It is recommended to process plants at a temperature of plus eighteen degrees. It works for about four to eight hours. The prepared solution cannot be stored, it must be used immediately.

The chemical is actellic.

This drug has a wide range of effects. It acts in a contact, fumigate and systemic manner. For manufacturing you need: dilute two milliliters of the product in one liter of clean water at room temperature. You need to spray immediately after you have prepared the solution. You cannot store it. It should be remembered that it is harmful to all living organisms, because it is in the second class of danger. More about Actellik here.

The chemical is apolo.

It is an acaricidal contact agent. It can kill insect larvae and eggs. He also sterilizes adult specimens, but does not kill them. It can be compatible with various chemicals. Will not harm beneficial insects and pollinating insects. To make the solution you need: dilute one teaspoon of the drug in ten liters of clean water at room temperature. You need to spray it with a fine spray.

The chemical is demitane.

This means of contact action, it is recommended to use at a time when the tick colonies are still forming. It will be productive at any stage of the tick's development. It works for a very long time, about forty five to sixty days. The percentage of toxicity in relation to beneficial insects and pollinating insects is quite low. Plants need to be processed only once, if there are more treatments, then insect pests can develop immunity. This remedy can be used in turn with other acaricidal drugs.

The chemical is karate.

The drug has a fairly wide range of effects. It has an intestinal, contact and fumigative effect. What should be the solution: for this, you need two tenths of a milliliter, diluted in one liter of clean water at room temperature. Processing must be carried out twice with a break of ten to fifteen days. It can be affected in all weather conditions. It is not washed off by rain for sixty minutes. It should be remembered that it is quite harmful to living beings. He is in the second class of hazard.

Lesser known but effective control chemicals.

This list includes drugs such as: 1) bicol; 2) bitoxibacillin; 3) neoron; 4) nissoran; 5) sunmight; 6) fitoverm and many others. All these drugs have a wide range of effects. When choosing a drug, it is best to consult with the seller in a specialized garden store. But against insect pests, you need to choose only acaricidal agents, because they will help with insect pests.

How to spray.

When spraying, you need to pay attention not only to the foliage, vine and plant itself, but also to the soil and the plant's near-stem circle. After all, it is there that egg clutches can be located.Also, before processing, it is recommended to add small shavings of green, either laundry or baby soap to the solution. This will provide better adhesion and the mortar will hold out much longer.

Most spider mite resistant grape varieties

Varieties that are 100 percent resistant to pests have not yet been developed. But there are varieties that can fight it. These are mainly hybrid selection novelties, such as:

• golden resistant;
• Dniester pink;
• buffalo;
• pineapple;
• Shasla northern

Do you need an autumn digging from a spider mite on grapes?

Many people ask this question because they believe that the root system can be damaged, and it will die with the onset of cold weather. But nevertheless, it is necessary to carry out digging, because it helps to destroy the laid eggs of insects. When digging, they will be in the open air, or too close to it, which will destroy them when frost sets in. It should also be remembered that they hide in the bark of the plant, and even in the fallen leaves. To protect the root system, you can mulch the trunk circle.

How long will it take to rid the plant of the spider mite.

In this case, the time will depend on:

• the degree of plant infestation;
• weather conditions;
• the selected drug;
• methods of influence.

If the infection is not strong, then you can get rid of the spider mite in eight to ten days. If the lesion is strong and profuse, then it will take about fifteen to twenty-five days to carry out two or three treatments.

Drug resistance

Resistance is the resistance that insect pests can develop with prolonged use of the same drug. They just can get used to it, and it will no longer act on them. Therefore, if you use chemicals, then they need to be alternated, or simply changed.

Conclusion

Many people want to eat grapes, ranging from small insects to large rodents and birds. Therefore, the gardener must carefully monitor the condition of the cultivated plants. It is also very important to take preventive measures. If you just noticed insects in your garden, then you need to immediately start fighting them. If mild measures do not help, then you need to resort to chemicals to combat spider mites on grapes.