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Growth of Plug Seedlings of ‘Nokkwrang’ Pepper in Mixture of Used Rockwool and Woodchip Particles  

Hwang, Seung-Jae (Department of Horticulture, Gyeongsang National University, Institute of Agriculture and Life Science, Gyeongsang National University)
Kim, Oh-Im (Department of Horticulture, Gyeongsang National University, Institute of Agriculture and Life Science, Gyeongsang National University)
Kim, Ik-Joon (Advanced Agricultural Facilities Project Team, Korean Agricultural & Rural Infrastructure Corporation)
Jeong, Byoung-Ryong (Department of Horticulture, Gyeongsang National University, Institute of Agriculture and Life Science, Gyeongsang National University)
Publication Information
Journal of Bio-Environment Control / v.12, no.3, 2003 , pp. 166-172 More about this Journal
Abstract
Rockwool slabs used for hydroponic cultures are expected to have potential to be reused after breakdown as a growing medium component for hydroponic culture of vegetables and cut flowers, pot plants, or plug plants. This study was conducted to test the feasibility of using particles of used rockwool slabs (PURS) mixed with woodchips for growing plug seedlings of ‘Nokkufang’ pepper. In the first experiment growth of pepper seedlings was tested in media of steam sterilized PURS mixed with chestnut woodchips (CW), which was weatherized for six months and screened through 2.8 mm or 5.6 mm sieves, at 100:0, 75:25, 50:50, 28:75 or 0:100 (%, v/v). In the second experiment growth of pepper seedlings was tested in 20 different media containing steam sterilized PURS mixed with 4 mm chestnut woodchips (CW), 4 mm pinc woodchips (PW), coir, peatmoss, or perlite. In the first experiment, there were no significant growth differences as affectcd by particle size of CW, while the overall best growth was achieved il1 the control and l00% PURS. In the second experiment, seedling growth was enhanced as compared to the control in 100% PURS or PURS mixed with peatmoss, coir, or perlite. In contrast, growth was suppressed as the proportion of peatmoss or coir mixed with PURS decreased and the proportion of CW increased. Growth was better in the PURS + peatmoss than in the 100% PURS or PURS + coir, and when woodchips were mixed with coir than peatmoss.
Keywords
chestnut woodchips; peatmoss; coir; perlite; rockwool reuse;
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