Copper Sulfate - Application, Instructions, Consumption Rates

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Copper Sulfate - Application, Instructions, Consumption Rates
Copper Sulfate - Application, Instructions, Consumption Rates
Video: Copper Sulfate - Application, Instructions, Consumption Rates
Video: How to Use Copper Sulfate As a Fungicide 2023, February

Soluble powder of blue-blue crystals, active ingredient: copper sulfate, 980 g / kg. It is used against fungal diseases of fruit trees and berries, as well as vegetables and flowers. The period of protective action is about 30 days.

Mechanism of action: copper ions react with lipoprotein and enzymatic complexes of fungal or bacterial cells, causing irreversible changes in protoplasm, causing non-specific denaturation of proteins.

The use of copper sulfate

This fungicide is used in the garden and vegetable garden, as well as at home to protect plants from a number of diseases:

copper sulfate
copper sulfate
  • alternariosis
  • ascochitosis
  • moniliosis
  • scab
  • mildew grapes
  • blotches
  • white spot (septoria)
  • downy mildew
  • rust
  • phytophthora, etc.

In addition, when spraying against diseases, copper sulfate is a simultaneous foliar feeding. Copper deficiency, as a rule, manifests itself in plants growing on acidic sandy and peaty soils.

Other areas of application of copper sulfate:

  • as an antiseptic against mold and rot on wooden structures
  • for soil disinfection

If this fungicide was actively used in the spring and summer, then it is better not to use it before winter, so as not to oversaturate the soil with copper ions.

Consumption rates

As a rule, a 1% solution is used with a consumption rate of about 10 liters per 100 m2. To prepare a working fluid, dissolve 100 g of copper sulfate in 10 liters of water or 10 g per 1 liter of water.

General rules for breeding copper sulfate:

  • Apple tree, pear, quince: from scab, phyllosticosis and other spots, moniliosis, drying out 100 g of the drug per 10 liters of water, the first spraying in early spring before bud break, at a consumption of 2-5 liters per tree. Can be repeated 2 weeks before harvesting apples and pears.
  • Apricot, peach, plum, sweet cherry, cherry: for clotterosporosis, coccomycosis and other spots, moniliosis, leaf curl, dilute 50-75 g per 10 l of water, first spraying in early spring before bud break, at a consumption of 2-3 l per tree …
  • Gooseberries, currants: from anthracnose, septoria and other spots, dilute 50-75 g per 10 liters of water, the first spraying in early spring before bud break, at a consumption for a medium-sized bush of 1.5 liters.
  • Spraying potato tubers against late blight before planting: 2 g of the drug per 10 liters of water. It is more convenient to fold the planting material into a vegetable net and dip it into the prepared solution.
  • Indoor flowers - watering against a complex of diseases - dilute a teaspoon (without a slide) into 2 liters of water to get a sky-blue solution, pour under the root or spray the leaves.

From spots on vegetables, for example, with ascochitis of cucumbers, plants can be sprayed with a 0.5% solution of copper sulfate and urea: for 10 liters of water 5 g of vitriol and 10 g of urea, repeat twice at intervals of a week.

To disinfect open ground and in greenhouses from diseases a week before planting seedlings or sowing seeds, water the soil with a 3% solution of copper sulfate (30 grams per liter of water). Such treatment will also protect potatoes from late blight.

To process the root system before planting, dilute 100 g of the drug in 10 liters of water, soak the root system (bulbs or tubers) for 3 minutes. Then remove from the solution and rinse thoroughly in running water. Bulbs or fleshy roots of tuberous, then air dry before planting.

How to dissolve copper sulfate

copper sulfate
copper sulfate

The required volume of powder, for example, 100 g of copper sulfate, is diluted in a small amount of water (500-700 ml), poured into a plastic bucket and heated to a temperature of 40-50 degrees (better dissolution), add water while stirring to bring the volume of the working solution up to 10 liters. Do not use metal utensils! Strain the prepared solution through a filter, for example, through nylon tights, before pouring it into the sprayer.

Copper sulfate treatment of tomatoes from late blight

Tomatoes are plants sensitive to errors in processing with copper-containing preparations. In order not to burn the leaves, but to defeat phytophthora, a very weak concentration is enough, only 0.2% solution. Prepare a copper-soap emulsion: grate 200 g of laundry soap and dilute in a little hot water; separately in a glass jar, dissolve 20 g of copper sulfate, use a wooden stick to stir, pour the fungicide into a soapy solution in a thin stream, with constant stirring and bring the solution to 10 liters of water.

With this solution, you need to spray the tomatoes on the sheet, the scheme is as follows:

  • spray seedlings for the first time, a week after planting in a greenhouse or open ground
  • further, depending on the weather, if the summer is dry, there is little rain, then do not spray until the August cold snap, do with preventive treatments with phytosporin, if the summer is damp and cool, treat it every 10-12 days.

Spray in calm weather, trying to wet the back of the leaves

When can you eat fruits and vegetables after spraying with copper sulfate

Most vegetables can be eaten 14-15 days after spraying, with the exception of:

  • melons (cucumbers, zucchini, pumpkins, watermelons, melons) - they can be sprayed 5 days before harvest
  • tomatoes can be sprayed against late blight and other diseases 7-8 days before picking the tomato

Important: rinse all fruits thoroughly with running water repeatedly - copper is not absorbed by the plant, and does not penetrate into the fruits, it remains on top of the shell of the fruit and is dangerous only if the fruits with soft peels, such as peaches, or the fruits are cracked.

Fruits and berries that cannot be washed well before eating are raspberries, strawberries, apricots, peaches, grapes, some varieties of currants (with soft berries) - you can spray copper preparations at least 1.5 months before the harvest ripens: one treatment before flowering, and the second in the ovary.

Copper sulfate from root rot, black leg, fusarium

To save cucumbers, zucchini or pumpkins from root rot (symptoms: wilting of bushes in hot weather, yellowing of leaves, dying off of ovaries, stopping the growth of zelents), you can prepare the following solution: 1 teaspoon of copper sulfate, 1 teaspoon of zinc sulfate, 1 tbsp … spoon of simple superphosphate in 10 liters of water. Pour cucumber bushes with a freshly prepared solution at the rate of 5 liters of liquid per 1 sq. m of land.

Watering from black leg and fusarium of vegetables and flowers: dilute 5 g of the drug in 10 liters of water.

How to process wooden structures with copper sulfate

Copper sulfate is an excellent antiseptic; it can be used to process any wooden structures in a summer cottage - walls of greenhouses and greenhouses, walls and structures of cellars, sheds, gazebos, wooden flooring, fences. It is better to apply the solution by spraying, to small surfaces with a brush or sponge (work with gloves). Allow to dry and repeat the treatment two more times. The coating must be renewed after 3-4 months.

In some cases, for a longer protection time, clay can be added to the solution to make a creamy mass, it is coated with the supporting pillars at the fence, the porch of the country house, or the support beams in greenhouses.

You need to know that deeply ingrained mold can no longer be removed and destroyed with copper sulfate, it is better not to use such material, since the boards lose strength, and the mold from them can go to neighboring ones, in such cases it is worth using preservative non-washable antiseptics.

Copper sulfate as fertilizer

Copper sulfate is introduced only on soils poor in this element, for example, chernozems contain copper in sufficient quantities, a little less, but not fundamentally it on sod-podzolic and gray forest ones, but peat-boggy and in places sandy and sandy loam contain little copper, therefore once every 5-6 years in early spring or autumn, you can make copper sulfate: consumption of 1 g per 1 sq. m.

For foliar feeding of vegetative plants with signs of copper deficiency (manifested primarily on young leaves), the dosage is 1-2 g of copper sulfate per 10 liters of water.

Copper sulfate compatibility

The drug is incompatible in common solutions with organophosphate insecticides and other drugs that decompose in an alkaline environment.


Copper sulfate has a hazard class 3 for humans (it can cause serious irritation of the mucous membrane when it comes into contact with a drug or solution) and a hazard class 3 for bees (border protection zone for bees 4-5 km). The drug is low-toxic for bees, however, it is better to isolate the bees for the period of processing crops and in the next 5-20 hours. Not phytotoxic if dosage is not exceeded.

Security measures

Use gloves and goggles to process, avoid smoking, drinking, eating during work. In case of contact with the skin or mucous membranes, wash off with plenty of water, if it enters the digestive tract, vomiting usually occurs immediately, no means should be taken, immediately call an ambulance.

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