Determination of Water Retention Characteristics of Organic and Inorganic Substrates for Horticulture by European Standard Method

유럽표준배지분석법에 의한 원예용 유기·무기성 배지의 수분보유특성

  • Kang, Ji-Young (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Park, Soon-Nam (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Lee, Hyun-Haeng (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Kim, Kye-Hoon (Dept. of Environmental Horticulture, The University of Seoul)
  • 강지영 (서울시립대학교 환경원예학과) ;
  • 박순남 (서울시립대학교 환경원예학과) ;
  • 이현행 (서울시립대학교 환경원예학과) ;
  • 김계훈 (서울시립대학교 환경원예학과)
  • Received : 2004.03.13
  • Accepted : 2004.03.31
  • Published : 2004.04.30

Abstract

The objective of this study was to get information about water retention characteristics of horticultural substrates used in Korea determined by European standard method. Water retention curves were prepared at water volume (v/v, %) in relation to -10 cm, -50 cm, -100 cm water pressure head. Water retention curves showed different properties depending upon the type, the place of origin, particle size, and manufacturing processes of substrates. Peat and coir had easily available water content in the range of 30-40% and showed high water holding capacity, water buffering capacity, and aeration for plant growth. However, bark, sawdust and rice hull showed low water holding capacity about below 10%. The easily available water content of perlite and clay ball was low about 0.1-13.8%, whereas that of vermiculite and rockwool granulate was high about 25.9-52.0%. Understanding water retention characteristics of growing substrates is very important in cstablisliing optimum condition for plant growth. Further study on water retention curves for more substrates, mixture and growing media is needed.

본 연구에서는 국내에서 사용중인 몇 가지 원예용 배지재료의 수분특성을 유럽표준배지분석법에 따라 수분보유곡선을 작성함으로써 살펴보았다. 유기성배지로는 피트모스, 코이어, 바크, 톱밥, 생왕겨를 사용하였고. 무기성배지로는 펄라이트. 팽화 버미큘라이트, 입상암면, 클레이볼을 사용하였다. 수분특성곡선은 유럽표준배지분석법을 사용하여 수두 변화에 따른 수분함랑(v/v)으로 작성하였다. 유기성배지 중 피트와 코이어는 유사한 수분특성을 나타내었으며 쉽게 이용 가능한 수분함량 (easily available water)이 30% 이상으로 식물생육에 적합한 보수성을 나타내었다. 반면 바크, 톱밥, 생왕겨와 무기성 배지들은 -10 cm의 낮은 수두하에서도 보유되는 수분함량이 매우 낮았고 식물이 쉽게 이용 가능한 수분함량 또한 매우 낮아 통기성은 충분하나 보수력이 부족하여 작물재배시 수분부족현상이 자주 발생할 것으로 보였다. 한편. 원예용 배지는 같은 종류의 배지라도 원산지에 따라 수분 특성에 차이를 보였으며, 입자가 미세하고, 시비 또는 부숙처리를 가한 것일수록 높은 수분보유능력을 나타내었다.

Keywords

References

  1. Boodley, J. W. 1998. The commercial greenhouse (2nd ed.), p. 140-142. Delmar Publishers, New York, USA
  2. CEN (European committee for standardization). 1999. Soilimprovers and growing media - Sample preparation for chemicaland physical tests, determination of dry matter content, moisturecontent and laboratory compacted bulk density. CEN. prEN13040
  3. Choi, J. M. 1998. Substrate and nutrition for plug production offloral crops. Korean J. Hoit. Sci. Tech. 16:279-281
  4. De Boodt, M., and O. Verdonck. 1972. The Physical properties ofthe substrates in horticulture. Acta Hort. 26:37-44
  5. Karlovich. P. T., and W. C. Fonteno. 1986. Effect of soil moisturetension and soil water content on the growth of Chrysanthemum in3 container media. J. Amer. Soc. Hort. Sci. 111:191-195
  6. Fonteno, W. C. 1996. Growing media; Types and physical andchemical properties, p. 93-122. In D. W. Reed (ed.). Water, media,and nutrition for greenhouse crops. Ball Publishing, Batavia,Ⅲinois, USA
  7. Karlovich, P. T., and W. C. Fonteno. 1986. Effect of soil moisturetension and soil water content on the growth of Chrysanthemum in3 container media. J. Amer. Soc. Hort. Sci. 111:191-195
  8. Meerow, A. W. 1994. Growth of two subtropical ornamental usingcoir (coconut mesocarp pith) as a peat substitute. Hort. Sci.29:1484-1486
  9. PBG (R&search Station for Floriculture and Glasshouse Vegetables).2000. Interlaboratory study CEN-methods (Analysis of growingmedia and soil improvers Spiing 2000)
  10. PBG (Research station for Floriculture and Glasshouse Vegetables).2001. Interlaboratory study CEN-methods (Analysis of growingmedia and soil impiwers Winter 2000-2001). PBG
  11. Verdonck, O., R. Penninck, and M. De Boodt. 1983. The physicalproperties of different horticultural substrates. Acta Hort. 150:155-159