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http://dx.doi.org/10.11626/KJEB.2019.37.4.554

Comparison of nutrient balance and nutrient loading index for cultivated land nutrient management  

Lee, Jun-Hyung (Department of Plant Life & Environmental Science/Biogas Research Center, Hankyong National University)
Yoon, Young-Man (Department of Plant Life & Environmental Science/Biogas Research Center, Hankyong National University)
Publication Information
Korean Journal of Environmental Biology / v.37, no.4, 2019 , pp. 554-567 More about this Journal
Abstract
Recently, concerns regarding the environmental impact due to nutrient input in croplands have increased. Therefore, the government is promoting the introduction of a nutrient management system in croplands to solve the problem of excessive nutrient input. This study was carried out to establish nutrient indicators in regional croplands to facilitate the introduction of the national nutrient management system in Korea. The nutrient load and balance indicators for nitrogen and phosphorus were analyzed for nine provinces (Gang-won, Gyeong-gi, Chung-buk, Chung-nam, Jeon-buk, Jeon-nam, Gyeong-buk, Gyeong-nam, and Jeju). In the correlation analysis between the nutrient load and nutrient balance, the correlation coefficient (r) for nitrogen was 0.2504, which was not statistically significant at the 5% significance level. However, the correlation coefficient for phosphorus was 0.7375, which was statistically significant at the 5% significance level. In the nutrient management index, phosphorus showed mutual compatibility between the nutrient load and the nutrient balance indicators, but nitrogen showed no mutual compatibility between the nutrient load and the nutrient balance indicators. Therefore, utilization of the nutrient balance indicator, reflecting the characteristics of the agricultural environment, was more reasonable as a nutrient management index for regional nutrient management.
Keywords
eco-friendly agriculture; nutrient balance index; nutrient load index; nitrogen and phosphorus; nutrient management;
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Times Cited By KSCI : 4  (Citation Analysis)
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