Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Changes in the Growth and Quality of Creeping Bentgrass (Agrostis palustris Huds. 'Penn A1') Following Gibberelinic Acid (GA3) Treatment

지베렐린산(GA3) 처리에 따른 크리핑 벤트그래스 (Agrostis palustris Huds. 'Penn A1')의 생장 및 품질 변화

  • Woo-Sung Kim (Jahngryu Industries) ;
  • Tae-Wooung Kim (Department of Horticultural Science, Daegu University) ;
  • Young-Sun Kim (Department of Horticultural Science, Daegu University) ;
  • Chi-Hwan Lim (Department of Bio Environmental Chemistry, College of Agricultural and Life Science, Chungnam National University)
  • Received : 2023.12.05
  • Accepted : 2023.12.19
  • Published : 2023.12.31
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Abstract

This study evaluated the effects of gibberellic acid (GA3) on the growth and quality of creeping bentgrass (Agrostis palustris Huds.). Experimental treatments included a No application of fertilizer and GA3 (NFG) Control [3 N active ingredient (a.i.) g/m2], 0.3GA3 (GA3 0.3 a.i. mg/m2/200 mL), 0.6GA3 (GA3 0.6 a.i. mg/m2/200 mL), 1.2GA3 (GA3 1.2 a.i. mg/m2/200 mL), and 2.4GA3 (GA3 2.4 a.i. mg/m2/200 mL). Additionally, the study included a 1.5N+GA3 experiment with similar GA3 treatments combined with 1.5N a.i. g/m2 : NFG, Control (3N a.i. g/m2), 1.5N+ 0.3GA3 (1.5N a.i. g/m2+GA3 0.3 a.i. mg/m2/200 mL), 1.5N+0.6GA3 (1.5N a.i. g/m2+GA3 0.6 a.i. mg/m2/200 mL), 1.5N+1.2GA3 (1.5N a.i. g/m2+GA3 1.2 a.i. mg/m2/ 200 mL), and 1.5N+2.4GA3 (1.5N a.i. g/m2+GA3 2.4 a.i. mg/m2/200 mL). Compared to the NFG, turf color index chlorophyll content was not significantly different (p< 0.05). However, shoot length in 1.2GA3, 2.4GA3, 1.5N+0.3GA3, 1.5N+0.6GA3, 1.5N+1.2GA3, and 1.5N+2.4GA3 treatments increased by 0.8%, 10.6%, 5.15%, 8.3%, 13.5 %, and 21.6%, respectively, compared to the control. As compared to the control, clipping yield in 1.5N+1.2GA3 and 1.5N+2.4GA3 treatments increased by 7.1% and 14.3 %, respectively. These results indicated that GA3 application increased shoot length, with the 1.2GA3 treatment showing shoot length similar to the control (3N a.i. g /m2 ).

Keywords

References

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