Fosforyty

Fosforyty

Phosphates occur in the soil in a more or less soluble form. If the phosphate content, e.g.. in sandy soil, it is small or they are too tightly connected, e.g.. with excess calcium in alkaline soils or aluminum in acidic soils, then their transformation takes place slowly and they are inaccessible to plants. In such a situation, even their small doses have a positive effect on the growth and development of plants. In the absence of such organic fertilizers, like bone meal or horse fodder, it is best to add phosphate rock flour produced from soft amorphous phosphates to the soil.

Where do the soft phosphates come from and what makes them stand out? In the third order of the African continent (in the so-called. the shelf sea) precipitation and sedimentation of phosphorus-containing substances occurred, possibly derived from fish and invertebrates. Such rich phosphate deposits have been discovered in Morocco and Tunisia, especially in the Gasfy area. These deposits are located at a depth of 50-100 m with a layer of 2-3 m thick. After extraction, the mineral is ground into a fine powder, which breaks down the calcium phosphate lumps and increases the chemically active surface. As a result, the minerals are more readily available to the plants. Phosphate rock is sold under the name Hyperphosphat. Mixed with Algomin, it creates a multi-component algae and phosphorus fertilizer (55% phosphoryte from Gasfa, 45% Algominu ). If necessary, phosphate rock can be sprinkled on the soil surface, especially light and acidic, at a dose of 200-300 kg / ha (the dose should be determined on the basis of chemical analysis). A better and more economical way is to add it to the compost in a dose 10 kg in 1000 kg of compost (or manure). In this way, the minerals will be taken up by plant organisms (mushrooms) and animal, and after decomposition, they will pass into the soil in a form that is easily digestible for plants. The degree of solubility of phosphate rock flour in formic acid (phosphorus absorption index for plants) fluctuates between 75-78%. In addition to many micronutrients, Hyperphosphat contains the following ingredients:
- Phosphor (P2Os) 26,6%
- calcium (High) 48,0%
- magnesium (MgO) 1,1 %
- silicon (SiO2) 3,0%
— glin (Al2O3) 1,0%.