Copper sulfate is a simple and effective remedy for the preventive treatment of the vineyard

Vine bushes, like other inhabitants of gardens and vegetable gardens, require competent care. The chemical industry has hundreds of drugs in its arsenal to improve growth and prevent plant diseases. However, to maintain the health of the vine, you can get by with an affordable tool - copper sulfate.

Is it possible to spray grapes with copper sulfate

Before using any product, you need to make sure that it is safe for the plant. Therefore, to begin with, let's consider what copper sulfate is and how it affects the vine.

Copper and iron vitriol should not be confused! They contain a different basic trace element.

On the left are crystals of iron vitriol, which helps fight lichens and moss, and on the right, copper ones, which protects grapes from mildew and oidium

Table: comparative characteristics of copper and iron sulfate

The composition of copper sulfate contains sulfuric acid salt, which destroys scab, rot, spots on shrubs, and copper, which is a plant food similar to iron, magnesium, chromium and other microelements. Therefore, treatment with copper sulfate is important for the development of the grape bush. However, do not forget that excess nutrition is just as dangerous as lack. In addition, copper sulfate burns young shoots and leaves, which leads to their death. In the use of any means, a reasonable approach is important - this is the key to success.

In what cases are grapes processed with copper sulfate

In horticulture and viticulture, copper sulfate is processed to fight diseases and as a top dressing. Depending on the chosen goal, the timing of the spraying is set and the dosage of the drug is selected.

Top dressing

For feeding grapes, copper sulfate, like other mineral fertilizers, is advisable on poor sandy soils and peat bogs, but not on black soil. Copper is involved in photosynthesis and increases resistance to fungal diseases. Disease damage to the vine is a consequence of malnutrition, including copper deficiency. A sign that the plant lacks this trace element is the poor development of young shoots and the whitening of the tips of the leaves. For top dressing, which is carried out on the leaves before flowering, use the following dosage: 2–5 g of copper sulfate per 10 liters of water.

Lack of copper in grapes is manifested by whitening of the tips of the leaves, usually on peat and sandy soils

An overabundance of copper in the soil should not be allowed: in this case, the growth of the grape bush will be inhibited. Therefore, if it rains after treatment with copper sulfate, you can re-spray no earlier than a month later.

Treatment for fungal diseases

As a fungicide, copper sulfate is effective in preventing:

  • scab,
  • brown spot
  • white spot,
  • powdery mildew.

Also, due to the fact that in a dissolved state, copper has an acidic reaction, the drug stops the development of mycoses.

To keep the protective film on the vine after spraying, adhesives must be added to the solution. It can be:

  • liquid laundry soap,
  • washing powder,
  • skimmed milk.

Enough 100 g of substance in a bucket of water. As a result, the drug will stick to the plant, it will not be washed away by sudden rain.

Since the resulting coating does not penetrate deep into the branch, special agents should be used for medicinal purposes: Ridomil Gold, Strobi, Cabrio Top or similar preparations.

A solution of copper sulfate at a concentration of 1-3% is used to soak seedlings before planting. Such processing will prevent infection with fungal diseases.

Soaking grape seedlings before planting in a 1-3% solution of copper sulfate will prevent infection with fungal diseases

What is the best time to process the vineyard

The timing of spraying grapes with copper sulfate depends on what the procedure is for. There are three seasonal treatments:

  • autumn - the main one, for the destruction of bacteria and fungi;
  • spring - additional, for disinfection and disease prevention;
  • summer - auxiliary, to suppress the activity of pests.

Based on this, it can be determined that the treatment with copper sulfate of the vine in the fall is preferable, but the importance of spring and the likelihood of summer procedures cannot be ruled out. Let's consider them in more detail.

Processing grapes with copper sulfate in autumn

The procedure is carried out after harvesting and the complete fall of the foliage. Depending on the region, this can be either the beginning or the end of November. The main thing is that the bush is already prepared for winter. In this case, it is no longer scary that the drug gets on falling foliage, the main thing is to completely irrigate the vine and protect the plant from infection. Before processing, the vine is tied in a bundle along the trellis.

When processing grapes with a solution of copper sulfate in the fall, the vine should be tied in bunches

Before carrying out the procedure, you should remove and burn damaged branches and fallen leaves. This will prevent re-infection with disease-causing spores.

Processing is carried out in the following sequence:

  1. Dissolve 100 g of copper sulfate in 1 liter of warm (50 ° C) water in a glass container. Stainless or enameled dishes will not work - the drug can react and destroy metal and enamel.
  2. Mix thoroughly, bring the solution to 10 liters and pour it into the sprayer tank. When pouring, it is better to use a filter, since particles of copper sulfate may remain undissolved.
  3. Spray the grapes, trying to get the solution all over the vine.

Video: processing the vine with copper sulfate in the fall

Processing grapes with copper sulfate in spring

In order not to burn the delicate greens, the procedure must be carried out before bud break. You can start processing only when the temperature is stable at least +5 ° C. This is an important condition, since copper promotes accelerated cooling of plants, which will be detrimental to the buds and young leaves in case of probable spring frosts.

The procedure is as follows:

  1. The vines are freed from winter shelter and raised above the ground, fastening to the trellis to dry out.
  2. After 1–2 days, a solution of copper sulfate is prepared at the rate of 100 g per 10 l of water in the same way as for autumn processing.
  3. The vine is processed from all sides.

Video: processing vine with copper sulfate in spring

Grape processing with copper sulfate in summer

Summer treatment is carried out in extreme cases: so as not to use potent medications if the first signs of the disease are found. For spraying, weak solutions should be prepared - 0.5%, and for lotions of vines against lichens and oidium - 3%.

Dosage of copper sulfate for various treatments

Since excess copper is dangerous for plants, strictly defined dosages are used for various purposes:

  • 0.5% - 50 g per 10 liters of water for emergency treatment on green leaves;
  • 1% - 100 g per 10 liters of water for spring treatment;
  • 3% - 30 g per liter of water for scab control;
  • 5% - 50 g per liter of water - processing in the fall of old powerful bushes.

Treatment of vineyards with Bordeaux liquid is more often applicable (combination of copper sulfate with lime in a 1: 1 ratio). In this case, the concentration of copper sulfate can be increased to 10%. In order for the mixture to be guaranteed to remain on the branches, liquid laundry soap should be added to the solution at the rate of 50 g per liter (or grate and dissolve the lump in water). It is necessary to process until the branches are completely wetted. Estimated consumption will be:

  • about 1.5–2 liters per arm (this is the name of a perennial branch) of medium size,
  • 3.5-4 liters for a large, well-developed bush.

Video: rules for preparing Bordeaux liquid

Solution preparation procedure:

  1. Prepare glass containers for mixing.
  2. Add copper sulfate powder to 5 liters of warm water and stir until completely dissolved:
    • 100 g for the preparation of a 1% solution;
    • 300 g for the preparation of a 3% solution.
  3. Dilute the slaked lime first in a liter of warm water, then bring the volume of the solution to 5 liters:
    • 100-150 g for the preparation of a 1% solution;
    • 300-400 g for the preparation of a 3% solution.
  4. Add soap or other adhesive to the milk of lime.
  5. Mix both solutions: pour dissolved vitriol into the milk of lime.
  6. Stir gently to avoid foaming and splashing.
  7. The resulting composition must be filtered through a filter. Use immediately, the mixture cannot be stored.

Safety rules when working with copper sulfate

When processing vines with Bordeaux liquid, you must observe safety measures

In order to benefit the vine and not harm your health, when making and using a solution of copper sulfate or Bordeaux liquid, you should adhere to the rules:

  • protect the skin from getting the finished product - wear closed clothing, shoes and a mask;
  • do not add other ingredients to the solution, except for copper sulfate, lime and soap;
  • spray the vineyard in the evening or early in the morning - this way the drops will last longer on the branches and will not evaporate under the rays of the sun;
  • handle in dry, calm weather. During rain, no manipulations are carried out, and the wind will interfere with evenly applying the drug to the vine;
  • spray not only the bush, but also the support on which it is tied, since it can be a carrier of pathogens and fungal spores.

If you have to carry out summer processing, this should be done no later than a month before the expected harvest. In the composition of copper sulfate there is a salt of sulfuric acid, which, if ingested, will cause poisoning.

Since the lime suspension settles to the bottom of the dishes, the solution must be mixed during the spraying process, otherwise water will first fall on the bush, and then the highly concentrated preparation.

Care must be taken to ensure that the entire surface of the vine is irrigated, and abundant watering of the soil under the bush must not be allowed. You can simply cover the ground with a film, but it is better to use finely dispersed directional spray nozzles - manual pump or electric devices.

The order of work (regardless of the processing time) is as follows:

  1. First, the top of the bush is treated.
  2. Then the middle tier is sprayed.
  3. The next step is to apply the product to the sleeves and barrel.
  4. Finally, the support is irrigated.

The mouthpiece of the apparatus should be kept at a distance of about 10–20 cm from the branch, and the stream should be directed along the vine from top to bottom.

A hand-held sprayer is handy for a couple of vines, while an electric one is handy for a large vineyard

Copper sulfate is an effective preparation for mineral feeding and prevention of fungal diseases. However, using it to cultivate a vineyard, do not neglect the rules, and then your plants will respond to the care with an excellent harvest!

  • Print

Hello! My name is Elena. I'm 40 years old.

Rate the article:

(26 votes, average: 3.8 out of 5)

Share with your friends!

How to properly process grapes with copper sulfate in the spring and why is it needed

The processing of grapes with copper sulfate in spring is carried out in order to protect the plant from fungal infections and insects, maintain protective forces and feed. This is a traditional product that is simple to prepare - just follow the proportions and safety precautions. The granular powder dissolves quickly in water and is combined with hydrated lime and urea. How and for what copper sulfate is used in gardening - we will tell in the article.

Features of use

You can spray grapes with copper sulfate for the winter, spring and summer. Due to its composition, the solution is able to destroy pests and parasitic fungi that provoke diseases. It is recommended to use it not only in the presence of problems with the vineyard, but also to prevent the appearance of diseases.

It is believed that spraying bushes with copper sulfate in spring is dangerous. This is due to the fact that some substances of the solution are able to accumulate in the soil, impairing its fertile qualities and reducing the yield of vineyards.

If you follow the rules for using the drug specified in the instructions, and adhere to the recommended doses and proportions of the solution, you will be able to avoid problems and get a high-quality harvest.

After studying the properties of copper sulfate, drugs were developed against parasites and diseases with a wide spectrum of action, which retained all the qualities of the substance, but were less toxic.

Advantages and disadvantages

The use of copper sulfate for grapes has both positive and negative sides.

  • chemical readily available commercially
  • the price of the drug is relatively low
  • fungicide has a wide spectrum of action
  • copper sulfate actively destroys the fungus
  • the product is intended for the treatment of diseases and their prevention.

  • high toxicity
  • the ability of a substance to accumulate in soil, plants and fruits
  • the properties of the drug have not been improved for a long time.

The disadvantages of copper sulfate also include possible burns to leaves and roots. They appear if the drug is diluted incorrectly. Despite this, the processing of grapes with copper sulfate is still carried out: it has been tested for decades and its price category is very affordable, which is of great importance when owning large vineyards.

Recommendations for use

Fungicide does not work well with top dressing, because when it gets into the soil, it destroys not only bacteria and fungi, but also useful microelements contained in the soil. Any organic fertilizers applied to the soil as a top dressing almost completely lose their properties in the process of interaction with lime and copper sulfate, so it is better to process the grapes with copper sulfate a week or a week after fertilization.

Spraying is best done after watering.

It is also not recommended to spray with a fungicide before watering the bushes: there is a possibility that the water will wash the solution off the leaves. For the substance to work, it must be on the plant for at least a day, especially after removing the bush from the shelter.

Treatment with a pure solution of grape cuttings is undesirable: they are too sensitive to this chemical. For them, it is better to use a 4% solution prepared in proportions of 40 g of substance per 1 liter of water. There is another treatment option: dip the cuttings in liquid for 15 seconds.

Comparison of copper and iron sulfate

Iron sulfate is less toxic and cheaper. Its advantage is that it gives the grape bushes iron, which is involved in oxidative and energy metabolism and contributes to the formation of chlorophyll. Ferrous sulfate is used as a fertilizer and as a remedy for pests and fungal diseases. However, its insecticidal properties are not as effective as copper sulfate.

After processing the vineyard with iron vitriol in the spring, the buds open a few days later. Its use makes sense during the frost period in order to prevent kidney death.


Gardeners work with an aqueous solution of copper sulfate, as well as with its mixtures - Bordeaux and Burgundy liquid.

What is copper sulfate used against?

Copper sulfate is quite effective as a prophylactic agent to prevent powdery mildew damage to the vineyard.

It has a detrimental effect on infections:

  • mildew (downy mildew)
  • anthracnose
  • alternaria
  • phomopsis (black spot)
  • cercosporosis
  • various rot (including botrytis)
  • bacterial necrosis (bacterial wilting, Oleuron's disease).

Is there a regional difference?

  • In the northern viticulture zone diseases are less common, and spraying of vegetative plants may not be necessary at all.
  • And here in the southern regions several treatments have to be carried out.

When is grape processing needed?

The processing of grapes with copper sulfate is carried out several times per season.

Copper sulfate is in demand in the vineyard throughout the season:

  • in early spring on a dormant vine
  • during the growing season (especially in the southern regions)
  • in the fall - before shelter, after leaf fall
  • for cauterization of cuts and wounds on wood
  • to protect cuttings from mold during storage.

In each case, you need your own dosage rates, different concentrations of the active substance.

Safety regulations

Copper sulphate is a toxic substance, with which quite strict requirements are imposed on work. It is imperative to observe the exact concentration of substances without changing the dosage at your discretion. In this case, it is important not to forget about the rules of personal safety.

  1. When working with a chemicalwhether it is preparing a solution or spraying it, care must be taken to protect the body, hands and feet. Clothes should be as closed as possible, it is better to put on rubber boots or galoshes on your feet, protect your body with a raincoat or a work dressing gown.
  2. Rubberized (doused) or nitrile gloves must be worn on hands. You cannot dose copper sulfate without protective equipment. After work, even with gloves, hands must be washed with soap and water.
  3. In the process of spraying the plant, the hair must be protected with a hat or hood, respiratory organs - with a respirator or an individual mask that prevents inhalation of small drops of the solution. Eyes are protected with special glasses.
  4. It is forbidden to spray copper sulfate and compounds based on it in windy weather. This increases the likelihood of contact with the aqueous dispersion of the solution, which can pose a health hazard.
  5. In warm periods of the year, early morning or evening hours are chosen for spraying. This will avoid evaporation of the solution until it penetrates into the organs of the plant. In addition, during the day, you can corny harm the plant - the leaves will simply burn.
  6. Skin contact Copper sulfate, especially in high concentration, can cause burns because it contains sulfuric acid. If contact does occur, wash the body area thoroughly with soap and an antiseptic. If irritation or burns develop, seek medical attention.
  7. When washing off the solution with rain, do not repeat the treatment earlier than after 4 weeks. In this case, it is impossible to control the digestibility of copper, and its excess in the soil is no less dangerous than a shortage.

Considering all safety rules, you can use copper sulfate when processing vineyards without risking your own health and plant safety.

For information on how to process grapes with copper sulfate, see the next video.

Watch the video: How to Spray Tomatoes with Copper Sulfate

Previous Article

Blood vomit plant care

Next Article

Raul landscaping glenview