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http://dx.doi.org/10.5389/KSAE.2012.54.3.019

Uniformity Assessment of Soil Moisture Redistribution for Drip Irrigation  

Choi, Soon-Kun (서울대학교 생태조경.지역시스템공학부)
Choi, Jin-Yong (서울대학교 조경.지역시스템공학부, 농업생명과학연구원)
Nam, Won-Ho (서울대학교 생태조경.지역시스템공학부)
Hur, Seung-Oh (농촌진흥청 연구정책과)
Kim, Hak-Jin (서울대학교 바이오시스템.소재학부)
Chung, Sun-Ok (충남대학교 바이오시스템기계공학과)
Han, Kyung-Hwa (농촌진흥청 농업과학기술원 토양관리과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.54, no.3, 2012 , pp. 19-28 More about this Journal
Abstract
Greenhouse cultivation has been increasing for high quality and four season crop production in South Korea. For the cultivation in a greenhouse, maintaining adequate soil moisture at each crop growth stage is quite important for yield stability and quality while the behavior of moisture movement in the soil has complexity and adequate moisture conditions for crops are vary. Drip irrigation systems have been disseminated in the greenhouse cultivation due to advantages including irrigation convenience and efficiency without savvy consideration of the soil moisture redistribution. This study aims to evaluate soil moisture movement of drip irrigation according to the soil moisture uniformity assessment. Richards equation and finite difference scheme were adapted to simulate soil moisture behavior in soil. Soil container experiment was conducted and the model was validated using the data from the experiment. Two discharge rate (1 ${\ell}/hr$ and 2 ${\ell}/hr$) and three spaces between the emitters (10 cm, 20 cm, and 30 cm) were used for irrigation system evaluation. Christiansen uniformity coefficient was also calculated to assess soil moisture redistribution uniformity. The results would propose design guidelines for drip irrigation system installation in the greenhouse cultivation.
Keywords
Soil moisture; redistribution uniformity; drip irrigation; richards equation; finite difference scheme; christiansen uniformity coefficient;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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