벼 담수직파재배시 Iprobenfos-metconazole(IPM) 처리에 따른 생육과 도복경감효과

• 영문명: Growth, Lodging Reduction as Affected by Iprobenfos-metconazole(IPM) in Direct-seeded Rice on Flooded Paddy Field
• 발행기관: 한국작물학회
• 저자명: 이계환(Lee, Kyehwan) 최봉수(Bongsu Choi) 박종현(Jonghyun Park) 우선희(Sunhee Woo) 이철원(Chulwon Lee)
• 간행물 정보: 『한국작물학회지』제58권 제4호, 393~398쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2013.12.30

영문 초록

Lodging in the direct seeded rice cultivation on flooded paddy is being severe problem due to the lower production and grain quality at ripening stage. This study was conducted to examine the effect of Iprobenfos-metconazole (IPM) treated 50, 40 and 30 days before heading respectively as a plant regulator to reduce the lodging at ripening stage of direct seeding rice cultivation. The culm length treated with IPM, especially the 4th culm internode, was shortened more than with untreated plot, and the most effective time was at 30 days before heading. At 20 days after heading the flag leaves colour showed more greening than in the untreated leaves and the plot with IPM treatment was to be maintained longer compared to the control plot. The Nitrogen concentration of leaves with IPM was lower than in the control plot, and SiO2 contents were higher than in the untreated plot and SiO2/N ratio was increased more in the IPM plot than in the control plot. The breaking strength of 3rd and 4th culm internode with IPM treatment was higher than in the untreated plot, and the lodging index was reduced in the IPM plot significantly and the field lodging also was reduced. As the results the rice production in the IPM plot was increased more due to be higher ripening ratio and seed grain weight compared to the untreated plot to be occurred the field lodging.

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키워드

culm internode Iprobenfos-metconazole(IPM) lodging nitrogen SiO2 SiO2/N ratio