가축분바닥재 처리 후 상추와 배추의 발아 및 육묘 특성

Abstract

This study was conducted to evaluate the effects of mixture of commercial substrate (CS) and bottom ash derived after combusting a livestock compost (BA). Treatments were as follows. Control (CS 100%), 4% (CS 96% + BA 4%), and 6% (CS 94% + BA 6%). Compared to control, pH and EC in the mixtures of both CS and BA were increased, and bulk density not significantly different. The germination rates of lettuce and Chinese cabbage in the BA mixtures treatments were 95.0-96.7% and 90.7-95.0%, respectively, and they not significantly different by BA rate. On 28 days after sowing in the mixtures, chlorophyll content, number of leaves, leaf length, leaf width, and dry weight of lettuces were not significantly different, and while chlorophyll content, number of leaves, leaf length, and leaf width of Chinese cabbage were not significantly different, its dry weight was increased. The root length of lettuce and Chinese cabbage was positively correlated to BA amount in the mixture (p<0.05). These results indicated that the application of horticultural substrates blending with BA improved root growth of leafy seedling such as lettuce and Chinese cabbage.