Vol. 8, Issue 8 (2019)

Author(s):
Yagnesh R Sadatiya, Parth J Kapupara, Dr. RJ Patel and Dr. DK Dwivedi

Abstract:
A field experiment was conducted to evaluate the performance of drip irrigation systems at “Irrigation Park” of College of Agricultural Engineering and Technology, Junagadh Agricultural University, Junagadh during the year 2018. An attempt was made to test the hydraulic performance of emitters of 2, 4, 8 and 14 lph for different operating pressures of 0.75, 1.00, 1.25, 1.5, 1.75 and 2.00 kg/cm². Pressure discharge relationship, Christiansen’s uniformity (CU), manufacturing coefficient of variation (CVm), emission uniformity (EU) and distribution uniformity (DU) of non-pressure compensating emitters were assessed in the study. It was concluded that the designated discharge of emitters was obtained at 1.00 kg/cm² operating pressure. The pressure discharge relationship follows a power function having exponent value less than 0.5 for non-pressure compensating emitters. The CVm was mostly less than 0.0544 for all operating pressures. CU, DU and EU were found to be greater than 90% for entire operating pressure range. Value of CU, CVm_, EU and DU were found to be in excellent and very good categories for all emitters as per ASABE standard.