Article Info Á¦28±Ç 2È£ °­¿ø ³ó¾÷»ý¸íȯ°æ¿¬±¸ Vol.28, No.2, pp.56-62, 2016
Title Effect of Light Control on Growth of Baby Leaf Vegetables using Rice Seedling Tray
Author Choi, K. Y.1 , S. H. Kim2 , J. K. Kim2 , H. J. Yoo2 and I. S. Kim2*
Institutions 1Department of Controlled Agriculture, Kangwon National University, Chuncheon 24341, Korea
2Department of Horticulture, Kangwon National University, Chuncheon 24341, Korea 
Abstract This study was conducted to investigate the effect of light control on growth of baby leaf vegetables (tatsoi, pak-choi, chinese cabbage ¡®alpine¡¯ and leaf lettuce ¡®cheongchima¡¯) in rice seedling tray. Light treatment controlled in non-shading (NS), shading for 8 days+non-shading for 9 days (S8NS9), non-shading for 8 days+shading for 9 days (NS8S9), and shading for 17 days (S17). Integrated solar radiation in NS was highest, and in S8NS9>NS8S9>S17 order. Integrated temperature did not shown difference among the treatments for growing periods. Growth and chlorophyll content of baby leaf vegetables were lowest in shading treatment for 8days. The highest growth characteristics (plant height, leaf length, leaf width, stem diameters, and fresh weight) and chlorophyll content of baby leaf vegetables was shown in NS. Increment rate of plant height and fresh weight of baby leaf vegetables were high in NS or S8NS9 as affected by light control for 8 days in early growth periods. These results suggest that we can utilize in low layer for early period and in high layer for harvest periods for baby vegetable production in rice seedling factory.
Keyword Chlorophyll content, Increment rate of fresh weight, Integrated solar radiation, Shading.
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