Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Simulation of Planted Area Index (PAI) for Crop Spacing Methods in Plant Factory

식물공장내 작물의 간격조절방법에 대한 식재면적지표 시뮬레이션

  • Kim, Joon-Yong (Dept. of Biosystems Engineering, Seoul National University) ;
  • Yang, Seung-Hwan (Research Institute for Agriculture and Life Science, Seoul National University) ;
  • Lee, Chun-Gu (Dept. of Biosystems Engineering, Seoul National University) ;
  • Ashtiani, A.A. (Dept. of Biosystems Engineering, Seoul National University) ;
  • Rhee, Joong-Yong (Dept. of Biosystems Engineering, Seoul National University)
  • 김준용 (서울대학교 바이오시스템공학) ;
  • 양승환 (서울대학교 농업생명과학연구원) ;
  • 이춘구 (서울대학교 바이오시스템공학) ;
  • ;
  • 이중용 (서울대학교 바이오시스템공학)
  • Received : 2011.07.26
  • Accepted : 2011.09.29
  • Published : 2011.10.25
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Abstract

Various crop spacing methods have been implemented so far for the greenhouse and plant factory applications. However, there is no generally accepted parameter for evaluation of plant spacing efficiency in plant production system. In this study, 'Planted Area Index' (PAI) of a spacing method is defined as the ratio of the planted area in the field to required planted area using the spacing method when no transplanting operation is assumed. Three common types of spacing methods for plane placement of the plants were modeled mathematically. For calculating the planted area, an optimal growth radius function (R(t)) is needed. Function of the days after transplanting stage gives a radius of an optimal circle area for the living plants. A computer simulation was developed to calculate the PAI, based on three crop spacing methods and four optimal growth radius functions. In general, the 1-D zigzag spacing showed the best PAI. Moreover, it gives an example on how to apply the PAI for the design.

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References

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