Determination of Suitable Parameters for Developing Adequate Growth Model of Pak-choi Plants

다국어 초록 (Multilingual Abstract)

Since growth and development of plants is influenced by environmental factors such as temperature and radiation, selection of suitable parameters in developing models is very important. Purpose of this study was to determine suitable parameters of in growth model of pak-choi (Brassica campestris ssp. chinensis). Expolinear function was used for developing growth model. The growth parameters of maximum relative growth rate, maximum crop growth rate and lost time in themodel were described by growing degree-days (GDD) and daily photosynthetically active radiation (PAR) integral parameters. Therefore shoot dry weight per area (g･m-2) could be predicted using those parameters as described above. Daily PAR integral, compared with time and GDD, improved the accuracy of the model (Y=0.83･X, R2=0.998***). Also shoot dry weight showed closely linear relationship with shoot fresh weight of pak-choi. From the results, we concluded that daily PAR integral was a suitable parameter for predicting the growth of pak-choi plants. The expolinear growth model developed using daily PAR in this study worked satisfactorily and could be a useful tool for optimizing farm management andcontrolling crop growth.

참고문헌 (Reference)

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