Vol. 11, Issue 11 (2022)

A field experiment was conducted to study the techno-economic evaluation of solar pump using surface and subsurface drip fertigation in brinjal (Solanum Melongena L.) crop during November 2019 to April 2020. The solar photovoltaic pumping system was having solar panel area of 28.8 sqm, power capacity of 4.8 kw and 5 hp AC submersible pump. The brinjal crop response to surface and subsurface drip irrigation having fertigation level of 60%, 80% and 100% RDF were assessed. The brinjal crop was transplanted at 0.6 m p/p x 0.3 r/r x 1.2 pr/pr spacing. The drip system were having inline lateral of 4 lph dripper at 0.6 m spacing. The each lateral was kept at 1.8 m spacing, each one served a pair of rows. The irrigation was scheduled at IW/ETc of 1.0. The maximum yield of brinjal was found to be 37940 kg/ha under subsurface drip irrigation with 80% RDF, while in surface drip irrigation it was found 33558 kg/ha with 100% RDF. The maximum benefit cost ratio of 9.07 was found under subsurface drip irrigation with 80% RDF.