METHOD OF SEED SOY CULTIVATION MAINLY IN DROP IRRIGATION SYSTEM Russian patent published in 2009 - IPC A01C7/00 

FIELD: agriculture.

SUBSTANCE: method of seed soy cultivation consists of dosing aggregate quantity of required fertiliser elements per one tone of grains and one tone of microelement biological mass N, P, K, Ca, S after determining on the basis of chemical analysis the removal of macro fertilisers and microelements by soy grains and soy vegetative mass (non-grain portion). A portion of macroelements is embedded in soil at the depth of 6-8 cm before sowing together with prevernal cultivation. 8-12% of nitrogen from the calculated nitrogen norm equalled 90 kg/t, 10-16% of phosphorus from the norm 30 kg/t, 4-6% of potassium from the norm 60 kg/t, 20-26% of calcium from the norm 9 kg/t and sulphur from the norm 12 kg/t are taken. Rotary tillage is carried out to the depth 4-5 cm perpendicular to the direction to fertiliser applying before sowing. To provide uniform distribution of N, P, K, Ca, S they are applied by drilled sowing with seed-fertiliser seeder SFS-3,6. During the tillering phase microelements 30-45% of N, 20-25% of P, 10-12% of K, 6-18% of Ca and 20-25% of S and microelements 10-12% of Mo, 14-18% of B, 8-14% of Co, 18-22% of Zn and 8-17% of Cu are applied in soy seeds together with irrigation water within drop irrigation. Within the phase of budding N, P, K, Ca, S, Mo, B, Co, Zn, Cu, at the dosage of 32-42%; 30-35%; 21-36%; 40-45%; 36-42%; 52-60%; 37-44%; 56-64%; 40-50%; 50-66% respectively are applied for excluding sterility of soy with irrigation water. Macroelements 15-21% of N, 16-18% of P, 20-26% of K, 11-34% of Ca, 17-36% of S are applied together with irrigation water directly to soy roots for providing seed evenness in soy beans, also foliage spraying is carried out by applying 200-250 l/hectare of working solution containing Mo, B, Co, Zn, Cu at the dosage of 30-36%, 42-45%, 26-32%, 32-38% and 26-33% from the nominal dosage over vegetative mass. 30-35% of K, 8-16% of S are applied during the period of filling - grain repining for increasing protein and fat content and decreasing of trypsin inhibitor activity with irrigation water from the drop irrigation system. Application of macroelements is completed by adding P at the dosage of 6-24% from the nominal value of orthophosphoric acid solution H₃PO₄ of 6-12% concentration.

EFFECT: increase in productivity and of evenness of soy seeds.

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