What gives the use of superphosphate and what is this fertilizer

Once, in 1669, an alchemist H. Brandt produced the following experiment: he evaporated the urine, the resulting precipitate mixed with sand and charcoal, and then heated the mixture in a closed retort. As a result, he received a substance that had the magical property of glowing in the dark. So for the first time, phosphorus was obtained. Since then it has been more than three hundred years, now this chemical element is widely used in various industries, as well as in agriculture. Let's talk about what can give superfosphate in the suburban area and how its varieties differ from each other. We hope this article will be very informative for all people who are engaged in growing crops in their garden.

Fertilizer with super attachment

The popularity of this substance is due to the fact that it is, first, non-toxic, resistant to fire and explosion, and secondly, it is suitable for almost any type of soil. The use of superphosphate allows obtaining very high yields of maize, beet, potato, flax, vegetable, cereals and other crops. And experts recommend for good results to combine the use of this substance in the main feeding with the addition of a small amount in the holes or rows immediately before the sowing. Perhaps you already had a question by this time about how much fertilizer should be applied. Note that the use of superphosphate directly depends on the soil fertility level, the use of organic additives and from the cultivated crop. In addition, the variety of fertilizer used should be considered. For example, for vegetable crops, the average dose is 40-60 (when available is simple) or 20-30 grams per 1 m ² (if double superphosphate is planned to be used ). The use of this fertilizer is recommended in areas where the yield depends on the content of sulfur in the soil, which plays an important role in the cultivation of oil, cereals and legumes. To add superphosphate is better in a row - in this case the utilization factor of phosphorus is several times higher, compared with the application before the plowing. At the same time, it is not necessary to abuse this fertilizer. Especially if we take into account that in 2-3 years the phosphorus assimilation ratio in superphosphate is about 40%.

Composition and varieties

In addition to its main component, this fertilizer also contains nitrogen, sulfur, magnesium and calcium. Depending on the percentage of phosphorus assimilated with crops , superphosphate is simple, double and enriched. The latter in its composition occupies an intermediate position between the first two. To date, this fertilizer can be purchased both in powdered and granulated form. In the first case, the use of superphosphate will cost the consumer significantly cheaper. Because of its easy mixing, this type of fertilizer is the best for composting. On the other hand, the powdered preparation in certain cases brings less benefit than superphosphate granular. Application of the latter allows to avoid caking, to maintain good dispersibility, and phosphorus in it contains more (up to 22%).