FIELD: agriculture.
SUBSTANCE: before sowing winter wheal seeds are treated with aqueous solution of biologically active preparation based on triterpene acids extracted from fir-tree wood green in amount of 0.5-1.0 l/ton of seeds, followed by treatment with alkaline agent of 100 g/l concentration. Method of present invention makes it possible to increase survived plant percent up to 82.1 %.
EFFECT: improved winter wheal frost resistance; increased survived plant percent.
2 cl, 2 ex, 2 tbl
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