Performance Assessment of Existing Drips Irrigation Systems’ Parameters (Uniformity, Efficiency and Adequacy Degree Installed In Selected Sites of Peshawar Valley

Abstract

The study was conducted to assess the performance of drip irrigation systems installed at Charsadda, Malakand Agency and Nowshera. The performance parameters of the drip irrigation system included the coefficient of variation of emitters flow rate with respect to uniformity, efficiency, adequacy and estimated design discharge by Dadex were compared with physical need based CROPWAT software estimation were evaluated. The emission uniformity in Charsadda farm range from 99.1 to 99.7%. In Malakand Agency farm it range between 96.1 to 97.9% while in Nowshera it range from 86.1 to 100%. Statistical uniformity calculated in Charsadda farm range from 99.3-99.8%. In Malakand Agency it is between 96 –97.3% and 82.8 to 100% in Nowshera farm. Application efficiency of drip system in Charsadda farm is between 88 to 100%. In Malakand it ranges from 67 to 83% while in Nowshera farm it is from 36 to 62%. The storage efficiency is maximum (80.3%) in Malakand Agency farm and minimum in Nowshera farm (24.9%). Charsadda farm has 62.5% average storage efficiency. Adequacy of irrigation having full irrigation of 2.4cm which is he desired depth of application. The adequacy of irrigation for the field in figure 21 is 52.5 percent, since 52.5 percent of the field receives the desired depth of application or more.

Keywords: Performance, Drip Irrigation, Application Efficiency, Uniformity, Statistical Uniformity, Coefficient of Global Variation.