METHOD FOR PROVIDING PLANT PROTECTION AGENTS FROM EUROPEAN FIR (PICEA EXCELSA L) NEEDLES

摘要

FIELD: plant protection. SUBSTANCE: needles are extracted with ethanol. Neutral substances are isolated from ethanol extract solution by alkali hydrolysis and then extracted with hexane. Hexane extract is chromatographed on silica gel column in system hexane 20% diethyl ether in hexane at weight ratio of neutral substances introduced into column to silica gel from 0.01 to 0.05. Fraction collection order: hexane, hexane-ether fractions. Both fractions are then combined. Product simultaneously show insecto-acaricidal, fungicidal, bactericidal, and growth-control activities. EFFECT: extended choice of plant protection agents. 3 tbl, 7 ex