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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.3
- 수록면
- 75 - 86 (12page)
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초록· 키워드
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Nitrogen (N) may be easily leached from a sand-based system. Frequent application of N is a way to reduce leaching. Repeated applications result in increasing cost. Slow-release fertilizers were designed to provide a steady release of N over time. Use of slow-release N sources has been promoted as a more efficient N fertilizer strategy. This study was conducted to evaluate N leaching, root and shoot growth, and nitrogen use efficiency (NUE) when urea and methylene urea were placed at four mixing depths in a sand-based system. Grass clipping samples were collected every two weeks, dried and weighed. Root dry weight and root organic matter were evaluated at the end of the study. Leachate was collected weekly and analyzed for nitrate-nitrogen (NO₃-N) content. Surface applied urea produced the largest clipping yield and the best NUE for total mass yield, with the lowest NO₃-N loss due to leaching. When applied subsurface, Methylene urea at the deepest mixing depth of 22.9 cm produced 121% more shoot growth, 57% less NO₃-N leaching, and 46% more NUE for total mass than urea. Split applications of surface applied urea provided the best establishment of Kentucky bluegrass sod on sand-based systems based on the results of the study.
목차
Abstract
Introduction
Materials and Methods
Results
Discussion
References
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UCI(KEPA) : I410-ECN-0101-2020-523-000587915