Effects of Planting Density on Growth and Yield of Hydroponically-Grown Pak-choi (Brassica campestris ssp. chinensis)
2005
Cho, Y.Y. (Seoul National University, Seoul, Republic of Korea) | Son, J.E. (Seoul National University, Seoul, Republic of Korea)
Planting density is an important factor to determine crop productivity and spacing efficiency in vegetable production systems. In this study, the growth and yield of hydroponically-grown pak-choi (Brassica campestris ssp. chinensis) were investigated under five different planting densities (27, 33, 44, 67, and 133 plants/㎡). Number of Leaves and top fresh weight per plant were decreased with increasing the planting density, while yields per area were increased reaching the maximum value at 133 plants/㎡. Maximum crop growth rate, Light use efficiency yield, and yield index, which are closely related with planting density, were the highest at 67 plants/㎡. Especially the yield index was 23-31% higher at 67 plants/㎡ than that at 33 plants/㎡.
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