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Optimum Condition of the Coir-Based Substrate for Growth of Red Pepper (Capsicum annuum L.) Plug Seedlings  

Lee, Hyun-Haeng (National Institute of Agricultural Science Technology)
Ha, Sang-Keon (National Institute of Agricultural Science Technology)
Kim, Kye-Hoon (Dept. of Environmental Horticulture, The University of Seoul)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.40, no.5, 2007 , pp. 369-376 More about this Journal
Abstract
This experiment was carried out to investigate optimum conditions of coir-based substrates for the red pepper plug seedlings. Eleven different coir based substrates prepared by mixing of coir, vermiculite, rice hull, perlite, zeolite, mixed at different ratios were tested. The physical and chemical properties of the substrates were analyzed by the CEN (European committee for standardization) method. Fresh and dry weights of shoot and root, leaf area, root length, and T/R ratio (dry shoot weight/dry root weight) were determined at 55 days after sowing. The results showed that the growing media CRZ 8(coir:rice hull: vermiculite=8:1.9:0.1) and CVSZ 6(coir:silver vermiculite: zeolite=6:3.9:0.1) can successfully be used for pepper plug seedlings judging from dry weight and T/R ratio of the plug seedlings. The optimal range of total pore space, water volume, air volume, easily available water content and water buffering capacity of the coir-based growing substrates for pepper plug seedlings were in the range of 92~94%, 52~60%, 32~43%, 18~21%, and 0.9~8%, respectively.
Keywords
Red pepper (Capsicum annuum L.); Coir; Growing substrate; Plug seedlings; CEN method;
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