Magnesium sulfate: why you need fertilizer, instructions for use

Magnesium sulphate (magnesium sulphate, magnesia, salt) is a fertilizer for garden crops that does not contaminate the soil with harmful pesticides and provides plants with sulfur and magnesium. What other properties does this beneficial substance have?

The magnesium sulfate fertilizer contains about 13% sulfur and 17% magnesium. It comes in the form of a powder consisting of small crystals of white or light gray color, which dissolve well in warm water. In the cold - this process takes more time.

Magnesium sulfate is actively used not only in agriculture, but also in medicine, as well as paper production.

The benefits of magnesium sulfate for plants

Magnesium sulphate accelerates the growth of horticultural and ornamental crops, increases yields and improves the taste of fruits. First of all it concerns tomatoes, potatoes and cucumbers, since this substance stimulates the formation of starch and sugars.

Magnesium is part of chlorophyll and is involved in photosynthesis. And without this process, the plant cannot develop properly. In addition, magnesium is involved in the metabolism and the construction of plant tissues, helps to absorb phosphorus and calcium, increases the amount of ascorbic acid, contributes to the accumulation of fats, essential oils and substances necessary for fruit ripening.

Signs of magnesium deficiency in plants

  • Tarnishing of the color of the entire aboveground part of the plant, yellowing of the lower leaves.
  • Yellow, brown spots, brown edges on the sheet plate.
  • White stripes between the veins (meszylkovy chlorosis) or marble pattern.
  • Shrinking and leaf fall.
  • Growth retardation, small buds and undeveloped fruit.

Symptoms of Magnesium Deficiency

Use of magnesium sulfate

Over time, even the richest soil is impoverished. Therefore, the additional introduction of the elements necessary for the proper development of plants is inevitable.

Green body per day requires an average of 1.5-2 g of magnesium. The most effective solution of magnesium sulfate, because without water, this substance is not absorbed by plants. If you apply dry granules to the soil, then after that you need to pour abundant water at room temperature.

Fertilizer is used on all types of soil, but special attention should be paid to sandy and acidic soils, since the increased acidity does not allow the plants to absorb magnesium in full. Therefore, before using magnesium sulfate, lime must be introduced into the ground during the autumn digging.

  • How much lime should be applied to the soil at the site?
    We tell how to properly lime the soil.

Magnesium sulfate can be applied to the soil in both spring and autumn. In this spring, you need to take into account the location of the root system of certain crops. So, for root crops, fertilizer is slightly buried in the soil, so that magnesium is better absorbed. You can use both dry crystals (powder) followed by watering, and an aqueous solution.

Magnesium sulfate can be fed any plants

In order to stimulate the growth of garden and horticultural crops, an aqueous solution of magnesium sulfate is used for root feeding during the growing season (usually every 15–20 days). The fertilizer is dissolved in water with a temperature of at least 20 ° C.

During the period of active growth of green mass, the plants are sprayed on the leaves. To prepare the solution using 15-20 g of magnesium sulfate per 10 liters of warm water.

Dosage of magnesium sulfate for different plants

CultureMagnesium sulphate application rate
Tomatoes, cucumbers
  • Pre-sowing tillage: 10 g per 1 sq. M.
  • Root top dressing (2 times a month during the growing season): 30 g per 10 liters of warm water.
  • Foliar top dressing (by leaves): 15 g per 10 l of warm water.
Cabbage, carrots, beets
  • Pre-sowing tillage: 15 g per 1 sq. M.
  • Root top dressing (2 times a month during the growing season): 35 g per 10 liters of warm water.
  • Foliar nutrition (on leaves): 20 g per 10 liters of warm water.
PotatoesWhen planting tubers in the soil make 15-20 g of fertilizer (per 1 square meter).
Fruit trees
  • Planting seedlings: 30 g of dry fertilizer per 1 sq. M.
  • Annual root dressing: 25 g per 10 liters of water. About 5 liters of solution are spent on each young tree, and 10 liters per adult.
Berry Bushes
  • Planting seedlings: 20-25 g of dry fertilizer per 1 sq. M.
  • Annual root dressing: 15 g per 10 liters of water. At each bush spend 2-3 liters of solution.

Magnesium helps plants to assimilate other important elements (nitrogen, phosphorus, calcium), so the application of magnesium sulfate is best combined with other feedings. Most often, magnesia is used together with potassium sulfate. These salts enrich the fruits of vegetable and horticultural crops, and also accelerate the growth of flowers, including indoor, and stimulate flowering.

Tomatoes are recommended to be fed with the following composition: calcium nitrate, potassium nitrate, magnesium sulfate, monopotassium phosphate, potassium sulfate, ammonium nitrate.

Plants, as a rule, do not suffer from an overdose of magnesium, since they absorb as much of the soil as they need. Therefore, do not be afraid to use magnesia in your area, even if the green pets do not signal a lack of magnesium.

Watch the video: Why is Epsom SaltMagnesium Sulfate Good For Tomato & Vegetable Plants: The Details! - TRG 2014 (February 2020).

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