Abstract:
Gholam-gardeshy (snake shape) furrow irrigation is a modified form of furrow irrigation, which has been used in Iran traditionally for a long time. To measure the performance of this method of irrigation and to compare the results with the furrow irrigation, three experimental fields with different soil textures and field slopes were used to collect data. Field data such as furrow inflow hydrograph, furrow outflow hydrograph and advance were collected for both methods. The results showed higher advance velocity for furrow irrigation and lower water loss as runoff for the Gholam-gardeshy irrigation. The results showed that for the same volume of applied water as the slope of the field increases the application efficiency for Gholam-gardeshy irrigation increases while the application efficiency for furrow irrigation decreases. At higher field slopes, the differences between the infiltrated water along the field for both methods decreases. In heavier texture soils, application efficiency for Gholam-gardeshy irrigation increases as compared to the furrow irrigation. In both methods, the determined advance equations were able to predict the field data with coefficient of determination of more than 90%. The difference between the two methods for longitudinal advance and infiltration along the field was significant at 5% level.
Page(s):
698-702
DOI:
DOI not available
Published:
Journal: International Journal of Agriculture and Biology, Volume: 8, Issue: 5, Year: 2006