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지렁이분립(糞粒) 추출물(抽出物)이 오이의 초기생장(初期生長)에 미치는 영향(影響)
朴洗震 ( Sei Jin Park ),李柱三 ( Ju Sam Lee ),金明苑 ( Myong Won Kim ) 한국유기농업학회 1994 韓國有機農業學會誌 Vol.3 No.1
Worm cast is one of the most effective and the least harmful organic fertilizer. The purpose of this work is to elucidate the physiological role of worm cast in the plant growth. Worm cast extract contains 17.83ppm of zinc, but either cadmium or lead were not detected in it. Cucumber (Cucumis sativus L. cv. H. N. Semiwhite) was germinated and incubated with percentage-varied extract. While 10% extract stimulated sprouting of seeds, 100% extract had no effect on it. 50% extract and 100% extract enhanced hypercotyl elongation and fresh weight most effectively. Dry matter and zinc concentration in hypercotyl were incresed as percentage of extract increased. Protein content was not affected by extract. 100% extract inhibits water uptake of seedling. Considering these, enhancement of seedling growth was mainly based on increment of water uptake.