METHOD OF SOIL FERTILISATION DURING AGRICULTURAL CROP CULTIVATION Russian patent published in 2009 - IPC A01B79/02 

FIELD: agriculture.

SUBSTANCE: method implies introduction of organic and mineral fertilisers. Sweet clover is used as the organic fertiliser. A mixture of glassy metaphosphates with alternating composition which contains the following components is used as the mineral fertiliser, wt %: phosphorus oxide - 40-60, potassium oxide - 10-30, calcium oxide - 5-20, magnesium oxide - 3-13, silicon oxide - 1-6, boron oxide - 1-6, oxides of Co, Fe, Cu, Mo, Mn, Cr, Zn, Ge, Se, V - 0.05-2. The mixture of glassy metaphosphates is scattered and ploughed in by a cultivator for the depth of 10-15 cm prior to the sweet clover sowing. During the sweet clover blossoming the plants are ploughed in the soil by disc harrow for the depth of 6-8 cm, then soil tillage for the depth of 20-25 cm, cultivation and winter wheat seeding follow. The mixture of glassy metaphosphates with alternating composition is introduced in the amount of 75-100 kg/ha.

EFFECT: ensuring greater cereal crop capacity grown after green mass ploughing; keeping the soil and water environment conditions.

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