Development of Root Media Containing Carbonized and Expanded Rice Hull for Container Cultivation of Horticultural Crops

Park Eun Young; Choi Jong Myung; Shim Chang Young

doi:10.7235/hort.2014.13002

All Issue

2014 Vol.32, Issue 2 Preview Page Next Page

Development of Root Media Containing Carbonized and Expanded Rice Hull for Container Cultivation of Horticultural Crops 팽연왕겨와 훈탄을 포함한 원예작물 용기재배용 혼합상토의 개발

30 April 2014. pp. 157-164

PDF XML

Abstract

Objective of this research was to develop root media containing expanded rice hull (ERH) and carbonized rice hull (CRH). To achieve this, the physico･chemical properties of two materials were analysed and blended with peatmoss (PM) or coir dust (CD) with various ratio. Based on the physical properties of the blended materials, 4 root media were selected for future experiment. After the analysis of pH and EC of the selected root media, the kinds and amount of pre-planting nutrient charge fertilizers (PNCF) incorporated into each root medium were varied, and then, final chemical properties of the root media were analysed. The total porosity (TP), container capacity (CC), and air-filled porosity (AFP) were 81.3%. 39.9%, and 41.4% in ERH and 77.6%, 64.1%, and 13.5% in CRH, respectively. The percentage of easily available water (EAW, from CC to 4.90 kPa tension) and buffering water (BW, 4.91-9.81 kPa tension) were 11.37% and 5.27%, in ERH and 17.26% and 14.28% in CRH, respectively. The pH of ERH was 7.1, but it was extremely high in CRH such as 11.2. The EC and CEC were 1.31 dS･m-1 and 12.1 meq･100 g^-1 in ERH and 6.53 dS･m-1 and CEC 7.79 meq･100 g^-1 in CRH, respectively. The ranges of TP, CC and AFP in 4 selected media (PM + ERH, 6:4, v/v; CD + ERH, 8:2; PM + CRH, 7:3; CD+CRH 6:4) were 89.2-90.3%, 67.3-81.8%, and 8.3-21.9%, respectively. The pHs and ECs in root media containing peatmoss such as PM + ERH (6:4) and PM + CRH (7:3) were 4.0-4.3 and 0.33-0.365 dS･m-1, whereas those of CD + CRH were 7.4-7.9 and 1.282 dS･m-1. The pHs and ECs, however, analysed before and after the incorporation of PNCF in each root medium were not significant different. This result indicated that the incorporated fertilizers in PNCF to adjust medium pH did not dissolve enough to influence medium pH, but it is very normal in root media containing dolomitic lime and sulfur powder in adjusting pH. The Information obtained in this study may facilitate an effective formulation of root media containing rice hulls.

Keywords

air space

chemical properties

container capacity

nutrient contents

physical properties

국내에서 유통되고 있는 팽연왕겨(ERH)와 훈탄(CRH)을 포함한 혼합상토를 개발하기 위하여 두 종류 물질 또는 이들을 피트모스(PM) 또는 코이어 더스트(CD)와 혼합한 상토의 물리･화학성을 분석하여 원예용 상토로 적합한 4종류 혼합상토를 선발하였다. 이 후 기비를 첨가한 후 화학성을 분석하여 혼합상토로써의 적합함을 판단하였다. 공극률, 용기용수량 및 기상률에서 ERH는 81.3%, 39.9%, 41.4% 그리고 CRH는 77.6%, 64.1%, 13.5%로 측정되었다. 쉽게 이용할 수 있는 수분(EAW)과 완충수(BW)의 비율은 ERH가 각각 11.37% 및 5.27%로, CRH는 각각 13.5% 및 8.8%였다. 화학적 특성에서 ERH는 pH 7.13, EC 1.31dS･m-1, 양이온교환용량(CEC) 12.1meq･100g-1였지만 CRH는 pH 11.2, EC 6.53 dS･m-1, 그리고 CEC 7.79meq･100g-1로 분석되었다. ERH와 CRH를 PM 또는 CD와 다양한 비율로 혼합한 후 원예용 상토로 적합하다고 판단한 네 종류 상토(PM + ERH, 6:4, v/v; CD + ERH, 8:2; PM + CRH, 7:3; CD + CRH 6:4)의 공극률, 용기용수량 및 기상률은 각각 89.2-90.3%, 67.3-81.8%, 그리고 8.3-21.9%의 범위에 포함되었다. 그러나 피트모스가 혼합된 PM + ERH 또는 PM + CRH 혼합상토는 pH가 4.0-4.3, EC가 0.33-0.36dS･m-1로 강산성 물질이었지만, CD + CRH 상토는 pH 7.4-7.9, EC 0.814-1.282dS･m-1로 pH와 EC가 높았다. 따라서 이들 상토에 포함될 기비의 종류 및 양을 변화시켜 혼합하고 다시 화학적 특성을 분석한 결과 기비로 혼합하기 전과 뚜렷한 차이를 보이지 않았다. 그러나 기비로 혼합된 고토석회나 유황이 상토 pH에 미치는 영향이 매우 느리게 나타남을 고려할 때 우려할 상황은 아니라고 판단하였다.

키워드

기상률

화학성

용기용수량

무기물 함량

물리성

References

Argo, W.R. 1998a. Root medium physical properties. HortTechnology 8:481-485.

Argo, W.R. 1998b. Root medium chemical properties. HortTechnology 8:486-494.

Bunt, A.C. 1988. Media and mixes for container grown plants. Unwin Hyman, London.

Cataldo, D.A., M. Haren, L.E. Schrader, and V.L. Young. 1975. Rapid colorimetric determination of nitrate in plant tissue by nitration of salicylic acid. Commun. Soil. Sci. Plant Anal. 6:71-80.

Chaney, A.L. and E.P. Marback. 1962. Modified reagents for determination of urea and ammonia. Clinical Chem. 8:130-132.

Chapman, H.D. and P.F. Pratt. 1961. Method of analysis for soil, plants and waters. Univ. of Calif., Div. Agr. Sci., Berkeley, CA.

Choi, J.M., J.W. Ahn, J.H. Ku, and Y.B. Lee. 1997. Effect of medium composition on physical properties of soil and seeding growth of red pepper in plug system. J. Kor. Soc. Hort. Sci. 38:618-624.

Choi, J.M., J.H. Chung, and J.S. Choi. 1999a. Physical properties of pine bark affected by peeling method and improving moisture retention capacity. J. Kor. Soc. Hort. Sci. 40:363-367.

Choi, J.M., H.J. Chung, and J.S. Choi. 2000. Physico･chemical properties of organic and inorganic materials used as container media. Kor. J. Hort. Sci. Technol. 18: 529-535.

Choi, J.M., H.J. Chung, B.G. Seo, and C.Y. Song. 1999b. Improved physical properties in rice-hull, saw dust and wood chip by milling and blending of recycled rockwool. J. Kor. Soc. Hort. Sci. 40:755-760.

Choi, J.M., I.Y. Kim, and B.K. Kim. 2009. Root substrates. Hackyesa, Daejeon, Korea.

Choi, J.M., C.Y. Shim, and J.S. Choi. 2002. Effect of phosphorus fertilization on changes in concentrations of nutrients in rice- hull based root media, crop growth, and nutrient contents of chrysanthemum. J. Kor. Soc. Hort. Sci. 43:235-238.

Choi, J.M., C.Y. Shim, and H.J. Chung. 2001. Effect of liming fertilization on changes in concentrations of nutrients in rice- hull based root media, crop growth, and nutrient uptake of chrysanthemum. J. Kor. Soc. Hort. Sci. 42:553-556.

Hendershot, W.H., H. Lalande, and M. Duqutte. 1993. Ion exchange and exchangeable cations, p. 167-176. In: M.R. Carter (ed.). Soil sampling and methods of analysis. Can. Soc. Soil Sci., Lewis Publisher, Toronto.

Lee, P.O., J.S. Lee and J.M. Choi. 2001. Effect of liming fertilization on changes in medium pH, nutrient concentrations, and seed germination of ‘Potomac Red’ snapdragon in plug production. J. Kor. Soc. Hort. Sci. 42:596-600.

Maher, M., M. Prasad, and M. Raviv. 2008. Organic soilless media components, p. 459-504. In: M. Raviv and J.H. Leith (eds.). Soilless culture: Theory and practice. Elsvier, London.

Milks, R.R., W.C. Fonteno, and R.A. Larson. 1989. Hydrology of horticultural substrates: II. Predicting physical properties of media in containers. J. Amer. Soc. Hort. Sci. 114:53-56.

Nelson, P.V. 2003. Greenhouse operation and management. 6th ed. Prentice Hall, Englewood Cliffs, NJ.

Song, C.Y., J.M. Park, J.M. Choi, C.S. Bang, and J.S. Lee. 1996. Effect of composted rice-hull on physic-chemical properties of growing media and growth of Petunia hybrid. J. Kor. Soc. Hort. Sci. 37:451-454.

Technical Association of Pulp and Paper Industry (TAPPI). 1975. Tappi standards and suggested methods. TAPPI, Georgia, USA.

Wallach, R., F.F. da Silva, and Y. Chen. 1992. Hydraulic charac-teristics of Tuff (Scoria) used as a container medium. J. Amer. Soc. Hort. Sci. 117:415-421.

Warncke, D.D. 1986. Analysing greenhouse growth media by the saturation extraction method. HortScience 211:223-225.

Information

Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
Publisher(Ko) :한국원예학회
Journal Title :Horticultural Science and Technology
Journal Title(Ko) :원예과학기술지
Volume : 32
No :2
Pages :157-164
Received Date : 2013-01-19
Revised Date : 2013-04-10
Accepted Date : 2013-04-30
DOI :https://doi.org/10.7235/hort.2014.13002

Horticultural Science and Technology 원예과학기술지 ISSN:1226-8763(Print) 2465-8588(Online)

All Issue