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The use of iron vitriol in gardening in the fall


In the arsenal of a farmer there is a proven, reliable drug - iron sulfate. It is still in demand, despite the emergence of many new chemicals. The reasons for popularity: a wide range of applications, low toxicity, reasonable price. What kind of drug it is, how to dilute it and then treat the garden, we will tell further.

The composition and the form of production of iron vitriol

Iron sulfate is otherwise called ferrous sulphate. From a chemical point of view, it is a salt, ferrous sulphate. It looks like small crystals (sometimes - powder) of a greenish color with a bluish (turquoise) or yellowish tinge.

Copper sulfate (crystals of a rich blue color) is not an analogue or iron substitute, each has its own recipe and tasks.

Iron sulfate is sold in garden and hardware stores, retail packaging is usually 200 or 250 g. The mass fraction of the beneficial substance (sulfate) - 53% (grade 1) or 47% (grade 2); in terms of pure iron - 20%.

Iron sulfate granules close up

Preparation of the working solution (general rules)

An aqueous solution of ferrous sulphate in different concentrations in horticulture is in demand. It is applied using a spray gun, in some cases - with a brush. Prepare it very easy.

Liquid is prepared only in glass, plastic or enameled containers.

Water for breeding is desirable to take soft - rain or snow. The resulting liquid is an antiseptic, has an acid reaction.

Compatibility with other drugs

When mixing sulphate of iron with alkalis (for example, with lime), chemical interaction occurs, and many properties are neutralized and lost. But such mixtures are sometimes used in agriculture as moderate (soft) fungicides.

It is not recommended to combine ferrous sulphate with other fungicides, with malathion-based insecticides (Karbofos, Fufanon, Aliot, Iskra M, Alatar, Inta-CM).

Iron sulfate is compatible with many drugs, fungicides and insecticides.


The solution of ferrous sulfate is prepared in various concentrations (proportion to 10 liters of water):

  • 15% - 1.5 kg;
  • 10% - 1 kg;
  • 5% - 500 g;
  • 3% - 300 g;
  • 1% - 100 g;
  • 0.5% - 50 g
The specific gravity of the substance is about the same as that of water. In a glass - 200 g, in a teaspoon - 5 g, in a tablespoon - 16 g. It is impossible to measure with metal spoons, take plastic.

Concentration of more than 1% is very effective, but it burns greens and is suitable only for plants in the resting stage.

Spheres of application

Blue vitriol helps fight some pests and plant diseases, fungus in homes and cellars. Acts as a fertilizer for chlorosis. Solves the following tasks:

  1. Destruction of lichens and mosses in garden plantings.
  2. Disinfection of wood wounds, hollow.
  3. Suppression of fungal infections in fruit, berry, ornamental and vegetable crops (treatment and prevention). Protection contact, on the surface (without penetration inside the plant).
  4. Decrease in the number of some insects (apple squirrel, pests of grapes).
  5. Reflection of the attack of rodents (efficiency - not 100%).
  6. Filling up the lack of iron in plant nutrition.
  7. Cleaning the walls of fungus, mold in the cellar and in the house. Wood processing.
  8. Disinfection of country toilets.

Consider various methods in more detail.

It is used not only for plants, but also for other purposes, such as disinfecting the toilet

Work instruction

In each case, need different concentrations. Let's look at the instructions and how it differs for different trees and shrubs.

When filling the hollow

Closing the hollow on the fruit tree allows you to stop the destruction of wood and extend the life of the plant. The operation is carried out at the end of the season, after leaf fall, in stages:

  • cleaning the internal cavity to healthy wood;
  • disinfection with iron vitriol (5 percent); sometimes recommend a stronger version (10%);
  • after 4 hours - sealing (filling) with cement mortar (cement, sand, lime in a ratio of 2: 6: 1 plus water until creamy thickness);
  • after drying - coating paint on linseed oil.

How to treat wounds in the fall trees

Freezers, burns, mechanical and infectious damage to the bark and wood are treated with ferrous sulfate (5%) after cutting the dead tissue. The optimal time for such events is the first half of summer.

The process of breeding ferrous sulfate for processing crops

Autumn sprinkling in gardening

After leaf fall trees and bushes enter the rest phase. This is the best time for a concentrated strike:

  • for fungal diseases (coccomycosis, cytosporosis, septoria, black cancer, scab, moniliosis, powdery mildew, anthracnose, spotting, rust, botrytis, etc.);
  • on mosses and lichens.
The goal of the work is not only the fight against existing infections, but also prevention to prevent their occurrence and development.

Dosage for the garden:

  • pomes rocks (apple, pear, etc.) - 5%.
  • stone fruit (cherry, plum, etc.) and decorative cultures (including roses), berries (raspberry, currant, gooseberry) - 3%.

The treatment is carried out by abundant spraying of trunks and branches, as well as pristvolny circles and soil in the adjacent territory. Approximate consumption - 2 liters per plant. They operate at a positive air temperature (from +5) in calm and clear weather.

Treatment in spring (before bud swelling)

Spring event - analogue of the autumn: same rules (not recommended for roses only). You can not be late with the deadlines: work when setting low positive temperatures (+5 degrees or slightly higher), strictly on sleeping buds. If the currant is already awake, it does not touch.

When treating trees, remember about the means of protection.

Such a spraying of apple trees in the spring reduces the number of the harmful insect - the apple leafblock (creeper).

Autumn and spring spraying leaves a special protective film on the kidneys. Because of her buds in the spring wake up a few days later. This is usually considered a positive effect, as it sometimes allows the flowers and ovaries to avoid frost.

Program for grapes

  1. Cuttings in the fall are disinfected before winter storage (3%).
  2. Sleeping cuttings before spring planting are washed with a solution of ferrous sulfate (1%). The kidneys are "inhibited", contributing to the growth of the roots.
  3. In autumn, the young vine planted for wintering before the shelter is treated at a concentration of 3%, adult bushes - 5%. Consumption - from 1 to 3 liters per bush. After some time, if the weather is wet, the vines darken - this is a normal reaction.
  4. Work is repeated in the spring, after opening, at air temperature above +4 degrees, before bud break. Sometimes for spring, the concentration is recommended to be weaker - 1%.

Many diseases and pests of vineyards are suppressed - oidium, pillow, mealybug, etc. Along the way, the procedure holds back the opening of the kidneys for 1-2 weeks (sometimes it is useful for avoiding frost).

There is an opinion that prewinter processing of grapes and green vitriol trees saves them from being devoured by mice and hares. Unfortunately, sometimes the method does not help. It is recommended not to neglect additional means of protection.
Spraying grape helps to cope with diseases and pests.

Special mixture

To combat fungal diseases, a special substance has to be prepared on a green sheet (it has a scientific patent, it has been tested). Mix 50 g of ferrous sulfate, 30 g of urea, 20 g of hydrated lime and 10 liters of water. The prepared liquid is stored no longer than a day. Sprayed:

  • apples, plums, cherries in the stage of bud break;
  • strawberries in spring in the growth phase of young foliage;
  • tomatoes, potatoes during the growing season (less phytophtoras and the Colorado potato beetle).

Additional effects:

  • the acidity of the substance is close to neutral, does not burn;
  • toxicity is minimal;
  • components reinforce each other;
  • good adhesion, long lasting protection;
  • nutritional value (nitrogen, iron, calcium).

Observed quantitative growth of the crop, improving its quality.

Spraying of iron vitriol can be carried out both in spring and autumn

Seasonal protection of roses in the garden

To combat black spot on roses, they are sprayed with foliar sulfate iron (diluted in a concentration of from 0.5 to 1%, not more): starting from the end of spring - several times (with an interval of 13 days).

Fertilizer fruit trees

If there is a shortage of iron, the plants show signs of chlorosis (yellowing, blanching) on ​​young leaves, the old leaf remains green; flowers are shrinking. Apple trees are especially sensitive - they have young shoots. On grassy crops, chlorosis occurs when excessive irrigation of the land with potassium permanganate (it interferes with the absorption of food).

Rescue foliar feeding with a weak solution of ferrous sulfate (up to 0.5%): several times weekly. For prophylaxis the dose is five times less - 10 g (2 tsp) per bucket.

Watering is less effective: in the soil the substance binds in inaccessible forms. Chelate fertilizer is necessary for root feed. It can be made independently: combine 1 liter of water, half a teaspoon of citric acid, a teaspoon of blue vitriol. The mixture is not stored, watered immediately.

At home

  • Early fall, before laying the harvest, on the surface of basements and cellars, a means (from 1 to 6%) is applied by spraying or brushing; then air out.
  • Against the house of fungus used strong concentration - 15%.
  • Outdoor garden toilets are sprayed to disinfect and reduce "odor" (5%).
Disinfection of vitriol garden toilet helps reduce unpleasant odor

Precautionary measures

Substance belongs to low-hazard (3rd class). Does not burn, does not explode.

The ingestion of a large amount of the drug causes a general toxic effect, indigestion, irritation of the skin and mucous membranes. Emergency medical assistance is required.

With competent agricultural work there are no problems. Spraying is carried out in calm weather, in protective clothing, in the respirator "Petal", in gloves. It is necessary to avoid settling of particles in the respiratory tract, as well as on the eyes, skin and mucous membranes. In case of contact, wash with water.

Storage after use

Expiration date in tight packing - without restriction. Opened containers should be protected from moisture, used as soon as possible.

The advantages and disadvantages of the drug


  1. Severe restrictions on processing time.
  2. Protective action - no more than a crescent.
  3. Substance is easily washed off by rain.
  4. Does not help against bacterial and viral diseases.
  5. Excessive concentration can destroy (burn) the plant.
  6. Low concentration is useless.

Positive points:

  1. Low cost of the drug.
  2. Long shelf life.
  3. Good efficacy against fungi.
  4. Additional iron feed.
  5. No toxicity (in authorized doses) for plants, humans, or the environment has been identified.

Iron vitriol is deservedly included in the list of sought-after drugs. With proper use, it gives excellent performance in terms of cost / effectiveness, protects planting from diseases and fungi.