|
KMID : 0903620000410010031
|
|
Journal of the Korean Society for Horticultural Science
2000 Volume.41 No. 1 p.31 ~ p.35
|
|
|
Influence of Rice Hull Ratio and Nutrient Solution Strength on the Growth of Hot pepper (Capsicum annuum L.) Seedling in Expanded Rice Hull - based Substrates
|
|
김광용/Kim, Kwang Yong
이병일/강성희/이지원/Lee, Byoung Yil/Kang, Sung Hee/Lee, Jin Won
|
|
|
Abstract
|
|
|
|
This experiment was conducted to find out the possibility of using rice hull as a substrate for raising seedlings. The physico-chemical properties of expanded rice hull and growth response to rice hull-based substrate were examined. Hot pepper was sown and raised on 128-cell plug tray. The mixture of 70 sphagnum peat moss and 30 perlite (%, v/v) was used as control substrate. Nutrient solution composed of N-P-K-Ca-Mg=8.0-2.4-2.4-4.8-1.6 me·L^(-1) including micro-nutrients was applied every 1∼3 days depending on the growing stages. Milled or expanded rice hull showed low CEC of 6.5∼7.0 meq/100 ㎤. In the beginning stage, pH was 6.6, after which it increased to over 7.5 in 2 weeks after sowing. Electrical conductivity (EC), particle density, bulk density, and air porosity of expanded rice hull were 2.1 dS·m^(-1), 1.60 g·㎝^(-3), 0.19∼0.26 g·㎝^(-3), and 88.1%, respectively. Container water capacity was 67.1∼75.1%, which was similar to that of sphagnum peat moss. In expanded rice hull-based substrate, the higher the rate of rice hull was, the more the seedling growth was inhibited, and the higher the concentration of nutrient solution was, the bigger the seedling growth was promoted showing unbalanced growth with remarkably large leaves. The seedling growth in expanded rice hull-based substrate was inferior to that of control substrate at the same fertilization level.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|