Effect of Temporal Infiltration Variation on Furrow Irrigation Management

Document Type : Research Paper

Authors

1 Assistant Professor, Soil and Water Research Institute, Tehran, Iran

2 (Retired) Assistant Professor of Tehran university, college of Agriculture

Abstract

Knowledge of the soil infiltration parameters and infiltration variation is necessary for efficient furrow irrigation. This experiment was conducted in the experimental farm of Tehran University at Karaj in 2002. The method used for determination of the basic infiltration rate was Inflow-Outflow. The basic infiltration rate and cumulative infiltration were determined on twelve irrigation events. The beds were planted with maize and divided into 3 plots each consisting of the three neighboring furrows. The outer furrows in each plot were used as guard rows and all measurements were taken on the center furrow. Results showed that the basic infiltration rate decreased during the season. At the end of season, the soil basic infiltration rate decreased about 34% as compared to the beginning. Also application efficiency decreased during the period. At the end of season, the application efficiency (AE) decreased about 10% as compared to the beginning of period. For achieving proper management with considering seasonal decrease of infiltration, time of irrigation must be increased.

Keywords

References

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Iranian Journal of Soil Research
Volume 21, Issue 2
February 2008
Pages 315-322

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