Growth and Quality of Baby Leaf Vegetables Hydroponically Grown in a Plant Factory with Artificial Lighting as Affected by Composition of Nutrient Solution

Abstract

The objective of this study was to investigate the effects of composition of nutrient solution on the growth and quality of baby leaf vegetables (tah tsai, romaine lettuce, beet, and red radish) hydroponically cultivated in a plant factory with artificial lighting (PFAL). Seeds of the four vegetable crops were sown in urethane sponges and cultivated for 14 days in a PFAL. Light intensity and photoperiod were 110 μmol･m -2･s -1 and 16 h･d -1 , respectively; and air temperature in photo-/dark periods was maintained at 25/20°C. Tap water was suppied for seven days after sowing, and then tap water (TW) and the nutrient solutions of Korea wonshi (KRWS), Japan enshi (JPES), and Yamazaki solution for lettuce (YMAK) were supplied for seven days. Fourteen days after sowing, the fresh weight of tah tsai and romaine lettuce was greatest in YMZK treatment, while there was no significant difference among nutrient solutions in beet and red radish. When we compared leaf color using Hunters a value, KRWS and JPES increased green color in baby leaf vegetables, while YMZK increased red color. Total phenolic content of romaine lettuce was greatest in KRWS treatment, but that in tah tsai, beet, and red radish showed no significant difference among nutrient solutions. Results suggest that KRWS enhances the growth and quality of romaine lettuce, while YMZK is appropriate for enhancing the growth and red color of beet and red radish hydroponically grown in a PFAL.OAIID:oai:osos.snu.ac.kr:snu2015-01/104/0000027607/5ADJUST_YN:NEMP_ID:A075898DEPT_CD:517CITE_RATE:0FILENAME:(곽유리나)growth_and_quality_of_baby_leaf_vegetables_hydroponically_grown_in_a_plant_factory_with_artificial··.pdfDEPT_NM:식물생산과학부CONFIRM: