퇴비원료와 추출용액의 원료조합이 퇴비차의 특성과 인삼의 생육에 미치는 영향 = Effect of the Different Material Combinations of Compost and Steeping Solution on Characteristics of Compost Tea and Growth of Ginseng (Panax ginseng C. A. Meyer

다국어 초록 (Multilingual Abstract)

The objectives of this study were to investigate mineral compositions and microbial density of compost tea, and to determine the effects of compost tea on the growth and early defoliation of organically grown ginseng plants. Compost tea was prepared from animal manure and mushroom compost fermented with water or slurry composting biofiltration (SCB)leachate as steeping solution. The effects of compost tea on the growth parameters of ginseng (shoot growth, root growth, leaf chlorophyll, defoliation) was tested. A foliar application was used in every two weeks from May 11 to Sept. 20. The compost tea based on SCB leachate was found greater amounts of N, P, and K content. The microflora of compost tea was dominated by bacteria and bacterial density in the compost tea was observed 2.8 × 107~ 3.8 × 108. The fungal and actionomycete density of the mushroom compost tea were higher than that of the manure compost tea. The leaf color(SPAD value) of ginseng leaf was higher in plots of compost tea application. The chlorophyll value(SPAD) in treatment of compost tea was increased within the ranges 17.5 ~ 18.3 compareed to 14.7 for non-treatment. The percentage of leaf defoliation was 33.8% in compost tea treatment compared to 52.5% of control plots. The length and diameter of rhizome of ginseng were not significantly affected by the compost tea treatment, while root length and weight were observed large in the compost tea treatment compared to control plots. Therefore, compost tea may be used to lengthen the growth period by reducing the early defoliation on organic cultivation.

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