제지(製紙)슬러지와 연탄재가 들잔디의 생육(生育)에 미치는 영향(影響) = Influence of Paper Mill Sludge and Briquet Ash on the Growth of Zoysiagrass

다국어 초록 (Multilingual Abstract)

To investigate the potential of paper mill sludge and briquet ash as cultural media in turfgrass, zoysiagrass was grown in the mixtures prepared with paper mill sludge and briquet ash. The mixtures were consisted of sludge and briquet ash in the ratio by volume 3:1, 2:1, 1:1, 1:2, and 1:3 in the order. To compare the growth responses, some plants were grown in the medium containing sand(3), field soil(1) and peatmoss (1) by volume anti regarded as control. 1. Activated sludge mixed with sand increased plant height, fresh weight, and dry weight more than 1.5-2.0 times compared to those of the control. The highest plant growth was shown in mixtures containing 67% activated sludge. 2. Plant density per $100cm^2$ and chlorophyll content were higher in all mixtures containing activated sludge than control. 3. The growth of zoysiagrass was reduced along with the increase of non-activated sludge ratio, but no difference was found in chlorophyll content. 4. Plant height, fresh weight and dry weight were greater in activated sludge combined with sand compared to the briquet ash mixtures, but the difference of shoot density between two mixtures was not shown. 5. Even though non-activated sludge appeared not to be appropriate to the growth of seedlings, the number of tillers of plant propagated with rhizome was more increased compared to control when briquet ash content was less than 75%.