Desirable Particle Size Distribution of Perlite for Tomato Bag Culture
2006
Sim, S.Y. (Gyeonggi Province Agricultural Research and Extension Services, Hwasung, Republic of Korea) | Lee, S.Y. (Gyeonggi Province Agricultural Research and Extension Services, Hwasung, Republic of Korea) | Lee, S.W. (Gyeonggi Province Agricultural Research and Extension Services, Hwasung, Republic of Korea) | Seo, M.W. (Gyeonggi Province Agricultural Research and Extension Services, Hwasung, Republic of Korea) | Lim, J.W. (Gyeonggi Province Agricultural Research and Extension Services, Hwasung, Republic of Korea) | Kim, S.J. (Gyeonggi Province Agricultural Research and Extension Services, Hwasung, Republic of Korea) | Kim, Y.S. (Sangmyung University, Cheonan, Republic of Korea)
The physical properties of seven perlites different in particle size distribution were investigated to develop perlite bag culture in Korea. Particle sizes of 1.0-2.8 mm and larger than 2.8 mm were rather evenly distributed in S-1 (1.2-5 mm), S-2 (0.15-5 mm) and S-5 (parat No.1). Larger particles were less in S-3 (1-3 mm), S-4 (Parat No.2), S-6 (OTAVI) and S-7 (Agroperl B-3). S-4, S-6 and S-7 contained lots of particles less than 1 mm in size. Total porosity was similar among substrates with the value of 59~62%. Container capacity was between 35-40% regardless of substrates except in S-2 with 27.7%.
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