doi: 10.5660/WTS.2020.9.3.289 Citation BibTeX RIS Mendeley

Inhibition Responses of Mepiquat Chloride on Growth of Creeping Bentgrass

Mepiquat chloride 처리 후 크리핑 벤트그래스 생육 억제 효과

• Hyeok-Jae Heo (School of Ecology & Environmental System (Major in Plant Resource Environment), Kyungpook National University, Daegu 41566,, Korea)
• Eun-Hye Park (대구대학교 생명환경학부(원예학전공))
• Jin-Ho Kim (Division of Life & Environmental Science (Horticulture Major), College of Natural and Life Sciences, Daegu University, Gyeongsan 38453, Korea)
• Jeong-Ho Youn (Hanul Co., Ltd., Hapcheon 13206, Korea)
• Young-Sun Kim (Division of Life & Environmental Science (Horticulture Major), College of Natural and Life Sciences, Daegu University, Gyeongsan 38453, Korea, Institute of Basic Science, Daegu University, Gyeongsan 38453, Korea)
• Geung-Joo Lee (Department of Horticulture and Department of Smart Agriculture Systems, Chungnam National University, Daejeon 34134, Korea)

Mepiquat chloride (MC) was a plant growth regulator of quarternary ammonium family acting on inhibiting gibberellin biosynthesis. This study was conducted to evaluate the inhibition effect of MC on the growth of creeping bentgrass (Agrostis palustris) by investigating visual quality indices, shoot length and clipping yield. As compared with control, turf color index, chlorophyll index and visual quality in the creeping bentgrass treated with MC was not significantly different, meaning those doses dis not interfere creeping bentgrass growth. The shoot length of MC treatments was decreased by 20-23% on 28 day after treatment than that of control and clipping yield by 39-56%. Compared with another growth retardant, the reference trinexapac-ethyl (RT), clipping yield of MC treatments were not significantly different, but retardant effect was more evident. The applying amount of MC was correlated with clipping yield negatively (P<0.05). These results indicated that the MC application was retarded the shoot growth of creeping bentgrass and decreased the clipping yield, and that MC might be another choice of growth retardant applying to creeping bentgrass.