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http://dx.doi.org/10.5338/KJEA.2004.23.1.007

Effect of Fertilizer Application Level considering Irrigation Water Quality on Rice (Oryza sativa L.) Productivity and Agricultural Environment  

Uhm, Mi-Jeong (Jeollabuk-do Agricultural Research and Extension Services)
Park, Hyun-Cheol (Jeollabuk-do Agricultural Research and Extension Services)
Kim, Kab-Cheol (Jeollabuk-do Agricultural Research and Extension Services)
Ryu, Jeong (Jeollabuk-do Agricultural Research and Extension Services)
Choi, Joung-Sik (Jeollabuk-do Agricultural Research and Extension Services)
Publication Information
Korean Journal of Environmental Agriculture / v.23, no.1, 2004 , pp. 7-14 More about this Journal
Abstract
This study was conducted to investigate the effect on agricultural environment and crop productivity by different amount of applied fertilizer in consideration of irrigation water quality. N, P and K contents of irrigation water used in this experiment were 6.16, 0.26 and 9.37 mg/L, respectively. N, P and K Concentrations of runoff water were lower than those of inflow water during rice cultivation. N, P and K Concentrations of ponded and percolated water were changed according to the amount and time of applied fertilization. During rice cultivation in paddy soil, nitrogen balance was closed to 0 in SFT 50% (50% level of soil testing fertilization), 0.14 kg/ha, but it was 95.3 kg/ha in CF (conventional fertilization) treatment In SW 50% and STF (soil testing fertilization) treatment yield of perfect rice was not greatly different as compared with CF treatment due to the superiority of ripening rate, 1,000 grains weight and milling characteristics. Mechanical paratability of rice was excellent in NF (non fertilization) treatment, STF 50% treatment showed higher in nutrient availability and fertilizers use efficiency than other treatments.
Keywords
irrigation water quality; nutrient balance; yield of perfect rice;
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