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Water and Nutrient Balance of Paddy Field Irrigated from a Pumping Station during Cropping Period  

Yoon, Kwang-Sik (College of Agriculture (Institute of Agri. Science & Tech.), Chonnam National University)
Han, Kuk-Heon (College of Agriculture (Institute of Agri. Science & Tech.), Chonnam National University)
Cho, Jae-Young (College of Agriculture (Institute of Agri. Science & Tech.), Chonnam National University)
Choi, Chang-Hyun (College of Agriculture, Chonbuk National University)
Son, Jae-Gwon (College of Agriculture (Agri. Science & Tech. institute), Chonbuk National University)
Choi, Jin-Kyu (College of Agriculture (Agri. Science & Tech. institute), Chonbuk National University)
Publication Information
Journal of Korean Society of Rural Planning / v.8, no.1, 2002 , pp. 15-25 More about this Journal
Abstract
The study was carried out to investigate the water balance and losses of nutrients from paddy fields during cropping period. The size of paddy fields was 95 ha and the fields were irrigated from a pumping station. The runoff loading was the highest in June because of the high concentrations of nutrients due to applied fertilizer, When the runoff Bosses of nutrients were compared to applied chemical fertilizer, it was found that 39.1 % to 42.5 % of nitrogen lost via runoff while runoff losses of phosphorus account for 14.5 % to 17 % of the total applied amount during cropping period. When the ratio was calculated between nutrients losses by infiltration and the applied of chemical fertilizer, two year results showed 9.1% to 10.8% for nitrogen and 0.5% for phosphorus, respectively.
Keywords
Citations & Related Records
연도 인용수 순위
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