Superphosphate

Superphosphate - a complex nitrogen-phosphorus fertilizer, which contains also a lot of useful trace elements for plants: sulfur, magnesium, calcium, potassium and others. Superphosphate effect on plants in several directions: improves metabolism, increases productivity and improves the quality of the crop, improves root growth and accelerates the development and flowering plants. Furthermore, phosphorus fertilizer makes our green pets from a variety of different diseases.

Superphosphate represents not concentrated phosphorus (20-25%) - nitrogen (6-8%) with addition of sulfur fertilizer (8-10%) and gypsum, it - calcium sulphate (35-40%). Available as a powder or as granules. Simple superphosphate fertilizer is more suitable for the podzolic, sandy, loamy soil and contributes to excellent growth of plants that consume a lot of sulfur: legumes, grains, cruciferous. Feeding simple superphosphate are receptive to potatoes, beets, turnips, radishes, carrots, flax, bulbs, etc.

Speaking about superphosphate, it should be noted that it is poorly soluble in water, and phosphorus contained in its structure, difficult to access for many groups of plants. But it is ideal as an additive to various composts. Laying the compost boxes (heap) for digestion, pour the it simple (preferably powder) superphosphate in the proportion of 100 grams of fertilizer per 100 kg of compost.

When used superphosphate?

This fertilizer has a long-term aftereffects. If you use it in large quantities, it will work on the principle of multi-day bird feeders - chicken bite from it grain, and it all slipped and slipped, until the end.

Experienced farmers calculated in advance the number of fertilizer and time of action, and make a new batch when the deadline. A novice would be useful to know what the signs may point to the need for superphosphate. If the plant leaves are dark green, or even blue, rusty tinge appears on them, all of this points to a lack of phosphorus. Sometimes only the reverse side of the sheet changes color, becoming purple. Often, these symptoms appear during a cold snap, or hardening of seedlings. The fact that at low temperature poor roots absorb phosphorus and improving its situation must be normalized, and the leaves - to get a green color. If this did not happen - the plants are added superphosphate.

How to use superphosphate?

Superphosphate to the soil in the spring and fall. The rates of application are the same, regardless of the season - 40-50 g / m² of cultivated land, and 55-70 g / m² - for already involved in the rotation. These doses are recommended for continuous introduction. When fertilizing fruit trees when planting under each pour 500 g per pit. If the fertilizer is entered under growing tree, it is recommended to use after flowering, at the rate of 40-70 g per tree trunks.

The greenhouses must be observed proportion - 75-90 g / m². Superphosphate made by digging with potash and nitrogen fertilizers.

For the tomato and potato, with a solid introduction, you need to take about 20 g / m².

How to use superphosphate with other fertilizers?

Superphosphate can be used together with nitrogen fertilizers. Double and granular can be used in conjunction with potassium fertilizers.

But along with the ammonium nitrateurea-46-0-0 and chalk, in accordance with the official instructions for use, fertilize plants that agrochemical impossible. Between their introduction should be kept for at least a week.

Phosphorus soluble in hard water. But in the liquid form, it quickly penetrate to the roots of plants. Gardeners have come up with a simple and affordable way to convert a substance from one state to another.

Superphosphate to dissolve in water, it is necessary to provide reaction heat. To do this, pour boiling water over the granules. Phosphorus retains its useful properties, thus becomes discontinuous digestible form. To prepare the slurry tank with the solution you need to put in a warm place, and as often as possible to stir. Then complete dissolution happen quickly, in about a day. Externally, the resulting suspension looks like a cow's milk with a high percentage of fat.

Superphosphate formula

Ca(H2PO4)2*H2O+ 2CaSO4 and additive.


Superphosphate

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