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• 영문명: Influence of Site-specific Fertilizer Application Using GPS and Digital Fertility Map on Rice Yield and Quality
• 발행기관: 한국작물학회
• 저자명: 지정현(Jeong-Hyun Chi) 이재홍(Jae-Hong Lee) 김희동(Hee-Dong Kim) 최병열(Byoung-Rourl Choi) 박중수(Jung-Soo Park) 박경열(Kyung-Yeol Park) 정인규(In-Gue Jung)
• 간행물 정보: 『한국작물학회지』제54권 제2호, 192~197쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2009.06.30

영문 초록

This study was conducted to investigate the effect of site-specific variable fertilization following digital fertility map generated from soil analysis on rice growth and yield. The site-specific application of fertilizer was implemented by using rice transplanter equipped with side dressing applicator and global positioning system (GPS). Coefficient of variation (C.V.) of soil nitrogen content was reduced after the experiment, and spatial variation of semi-variogram was reduced. Rice growth from tillering to ripening stage, plant height, tiller and panicle number increased at site-specific variable fertilization treatment, and coefficient variation (C.V.) of each growth characteristics was lower than those of conventional fertilization treatment. As a result, fertility in the rice field was more uniform become of site-specific fertilizer application. Head rice yield of site-specific application plot increased by 9% (i.e., to from 450 kg/10a to 492 kg/10a of the control plot) and its CV was significantly reduced to 3.5 compared to 7.8 of the control plot. In addition, there was no significant difference in amylose, protein contents and whiteness of milled rice, but its CV was reduced.

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결과 및 고찰

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키워드

Site-specific variable fertilization Digital fertility map Soil nitrogen content Rice growth Head rice yield Protein contents