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논문 기본 정보

자료유형
학술저널
저자정보
Hyerin An (Sunchon National University) Yeomyeong Lee (Sunchon National University) Juhee Lee (Sunchon National University) Sohee Yoon (Sunchon National University) Seong-Jik Park (Hankyoung National University) Sung-Chang Hong (RDA) Jin-Ho Kim (RDA) Sang Yoon Kim (Sunchon National University)
저널정보
한국토양비료학회 한국토양비료학회지 한국토양비료학회지 제56권 제1호
발행연도
2023.2
수록면
119 - 125 (7page)

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Nitrogen (N) has been considered one of the vital elements to enhance agricultural productivity. However, excessive use of N fertilizer can deteriorate environmental quality, increasing ammonia (NH₃) and greenhouse gases (GHGs) emissions from agricultural ecosystems. The combined use of inorganic and organic fertilizers may improve nutrient holding capacity, which can potentially reduce N losses (NH₃ and N₂O), resulting in high N use efficiency (NUE) and crop productivity. To investigate gaseous N losses and NUE in a maize (Zea mays L.) field experiment, four treatments for N fertilizers were laid out: NPK (urea), compost (compost), NPK+Compost (urea and compost), and control (no fertilizer) treatments. As compared to the control, seasonal NH₃ emissions significantly increased with all fertilization. In particular, combination of organic and inorganic fertilizers was effective on reducing N losses including NH₃ volatilizations and N₂O emissions, showing ca. 16% and 47% reduction, respectively over sole NPK treatment even though the same amount of N was incorporated in all treatments except the control. Maize productivity was significantly improved by N fertilizations, but was the highest in the NPK+Compost treatment, showing no statistical difference with NPK treatment. The NUE was the highest in the NPK treatment (35%) and followed by NPK+Compost (27%), compost (11%), respectively. In conclusion, mixing of organic-inorganic fertilizers could be a reasonable countermeasure to reduce the loss of gaseous N and simultaneously maintain productivity and NUE in agricultural soils.

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ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References

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