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Growth pf Plug Seedlings of Capsicum annuum and Lycopersicum esculentum as Affected by the Mixing Ratio of Aquafarm Waste Water Sludge in the Growing Medium  

Lee, Eun-Ju (Department of Horticulture, Gyeongsang National University)
Hwang, Seung-Jae (Department of Horticulture, Gyeongsang National University)
Kim, Ik-Joon (Advanced Agricultural Facilities Project Team, Korean Agricultural & Rural Infrastructure Corporation)
Park, Young-Hoon (USDA-ARS, WICS, Res. Unit, Cotton Enhancement Program, University of California-Davis)
Jeong, Byoung-Ryong (Institute of Agriculture and Life Science, Gyeongsang National University)
Publication Information
Journal of Bio-Environment Control / v.12, no.4, 2003 , pp. 184-189 More about this Journal
Abstract
This research was conducted to determine the effect of mixing ratio of aquafarm waste water sludge (AWWS) in the growing medium as a source of fertilizers on growth of plug seedlings of pepper (Capsicum annuum L.) and tomato (Lycopersicum esculentum Mill.). Increased mixing ratio of AWWS resulted in increased fresh and dry weights, leaf area, plant height, and total chlorophyll content, although there were slight differences in growth characteristics at 20 and 40 days after sowing. Concentration of AWWS affected insignificantly the percent dry matter, number of leaves, and length of the longest root. The addition of AWWS increased pH and decreased EC in the medium as compared to that of chemical fertilizer. Compared to the control of a liquid fertilizer, 4 or 8 kg AWWS${\cdot}45L^{-1}$ medium (Sludge 4) gave a similar or slightly better growth. Above results suggested that addition of about 4 kg AWWS${\cdot}45L^{-1}$medium is sufficient for seedling growth and the AWWS can be used as a substitute for the liquid fertilizer in plug seedling production.
Keywords
mixing ratio; substitution fertilizer; organic fertilizer;
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