Effect of Water-Extracts from Sludge Compost on Seed Germination
2007
Kang, S.J. (Sangju National University, Sangju, Republic of Korea) | Lee, C.H. (Kyungpook National University, Daegu, Republic of Korea) | Seo, S.H. (Kyungpook National University, Daegu, Republic of Korea)
In order to evaluate the physicochemical properties of sludge compost and to identify the effects water-extracts from sludge compost in 2, 6, 8, 12 weeks of decomposing process on seed germination and root elongation in cabbage, lettuce, soybean and barley plants was investigated. The content of total nitrogen in sludge compost increased slightly in 6 weeks decomposing process, and then decreased gradually. Organic matter content decreased continuously overall decomposing process. As decomposition was processing, pH of sludge compost decreased slightly, and EC increase within 6 weeks decomposing process, and then decreased.
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