FIELD: agriculture.
SUBSTANCE: method of presowing treatment of seeds of Silphium Perfoliatum comprises seed stratification for 40 days in a refrigerating chamber at the temperature of 1-30°C followed by soaking for 12 hours in an aqueous solution of salts of microelements: MnSO4 with the concentration of 100 mg/l, ZnSO4 - 40 mg/l and CuSO4 - 15 mg/l.
EFFECT: method increases the germinating energy, germination of seeds of Silphium Perfoliatum and shortens the period of seed germination by 5-6 days.
1 tbl
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