FIELD: agriculture.
SUBSTANCE: soil additive in the form of agglomerated dispersible granules having a size, measured by the diameter of the median, from 0.4 mm to 4.0 mm, containing: particles of activated aluminum oxide, having: a porous structure; and a plurality of electrically charged bonding sites located inside the porous structure; and phosphate particles, wherein the activated aluminum oxide particles and the phosphate particles are present in the agglomerated dispersible granules in the form of separate phases agglomerated together. Method of improving soil with buffered phosphorus includes: physical mixing of particles of activated aluminum oxide with particles of phosphate, wherein particles of activated aluminum oxide have: porous structure; and a plurality of electrically charged bonding sites located inside the porous structure; and then agglomerating the aluminum oxide particles with the phosphate particles to form agglomerated dispersible granules having a median diameter of 0.4 mm to 4.0 mm; and the introduction of the agglomerated dispersible granules into the soil, wherein the activated aluminum oxide particles and the phosphate particles are present in the agglomerated dispersible granules in the form of separate agglomerated phases, and when added to the soil, the activated aluminum oxide particles do not contain phosphate located inside the porous structure. Soil additive in the form of agglomerated dispersed granules having a size measured by the diameter of median from 0.4 mm to 4.0 mm, containing: 10–80 wt.% activated aluminum oxide particles having: porous structure; and a plurality of electrically charged bonding sites located inside the porous structure; and 10–80 wt.% of phosphate particles; and 10–50 wt.% water-soluble binder, wherein particles of activated aluminum oxide and the phosphate particles are present in the agglomerated dispersible granules in the form of separate phases agglomerated together. Method of improving soil with buffered phosphorus involves introducing said agglomerated dispersed granules into the soil.
EFFECT: inventions make it possible to increase adsorption and release phosphorus for plants, as well as increase root mass.
34 cl, 2 tbl, 11 ex
