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Effects of crop and surface irrigation method on water intake rate of soil
Affiliation:1. Water Research Commission, Lynnwood Manor, Pretoria 0081, South Africa;2. Centre for Transformative Agricultural and Food Systems, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Scottsville 3209, Pietermaritzburg, South Africa;3. International Water Management Institute (IWMI), Pelawatte, Battaramulla, Colombo, Sri Lanka;4. Alliance for a Green Revolution in Africa (AGRA), West End Towers, Nairobi, Kenya;5. School of Engineering, University of KwaZulu-Natal (UKZN), Scottsville 3209, Pietermaritzburg, South Africa;6. School of Environmental Sciences, University of Venda, Thohoyandou 0950, South Africa;1. Cranfield Water Science Institute, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK;2. Institute of Development Studies, University of Sussex, Brighton, East Sussex BN1 9RE, UK;3. San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA;4. Arizona State University, Coor Hall, 975 S. Myrtle Ave., Tempe, AZ 85287, USA;5. University of KwaZulu-Natal, Durban 4041, South Africa;6. University of Wisconsin—Madison, 1710 University Avenue, Madison, WI 53726, USA;7. World Agroforestry Centre (ICRAF), United Nations Avenue, P.O. Box 30677, Nairobi 00100, Kenya;8. U. S. Geological Survey, 2255 N. Gemini Drive, Flagstaff, AZ 86001, USA;9. Mediterranean Agronomic Institute of Bari (IAMB), Via Ceglie, 9-70010 Valenzano (BA), Italy;10. Biosystems Engineering Dept., ESALQ, University of Sao Paulo, Brazil;1. Department of E&TC Engineering, G. H. Raisoni College of Engineering & Management, Wagholi, Pune, 412207, Maharashtra, India;2. Department of E&TC Engineering, Ajeenkya DY Patil School of Engineering, Charholi Bk., Pune, 412105, Maharashtra, India
Abstract:
Two surface irrigation methods on three crop fields (border irrigated alfalfa and small grain and furrow-irrigated potatoes) in southeast Idaho were tested to determine their effects on the parameters of the Kostiakov equation. A double-ring infiltrometer was used to measure the water intake rate of soil for the border irrigated fields. The furrow-irrigated fields were tested by both double-ring infiltrometer and inflow-outflow methods. The border-irrigated fields showed higher values of the intercept of the Kostiakov equation than the furrow-irrigated fields for a given soil. This means that the border-irrigated fields have a higher initial intake rate than that of the furrow-irrigated fields. The intercepts obtained by the inflow-outflow method were lower than that by the double-ring infiltrometer but the exponents were statistically not different.
Keywords:
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