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Effect of Irrigation Frequency on Growth of Tomato Plug Seedlings in Media Containing Cellular Glass Foam and Peatmoss  

박정호 (경상대학교 대학원 응용생명과학부)
정병룡 (경상대학교 농업생명과학연구원)
Publication Information
Journal of Bio-Environment Control / v.12, no.1, 2003 , pp. 7-11 More about this Journal
Abstract
Cellular glass foam (CGF), the reprocessed glass, has a possibility to be used as a medium component in plug culture of horticultural crops due to the its excellent air and water permeability as comparable to perlite. An experiment was conducted to investigate growth of plug seedlings of Lycopersicum esculentum 'Segye' as influenced by irrigation frequency in various medium combinations of CGF (2.0-4.0 mm particle size) and peatmoss. Seeds were sown in 200-cell plug trays, filled with mixtures of CGF and peatmoss either at 33：67 or 25：75 (％. v/v) and were germinated on a fogged propagation bed. The irrigation frequencies used were one, two or three times per every two days. A commercial plug medium (Tosilee medium) was used as the control, and the irrigation frequency in the control was one time per day. Growth of seedlings, and medium pH and EC were measured at 33 days after sowing. The medium composition had little influence on overall growth of seedlings. Irrigation frequency very significant affected number of leaves, leaf area, chlorophyll concentration, fresh and dry weights of shoots and roots, and dry matter. Growth of seedlings was the greatest with the highest irrigation frequency in the 25% CGF＋75% peatmoss mixture.
Keywords
Lycopersicum esculentum; plug medium; cellular glass foam; perlite; nutrient solution; irrigation This work was partially supported by the Brain Korea 21 Project and the SGRP/PTOP (Problem-Oriented Technology Development Project for Agriculture and Forestry) in Korea.;
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