Comparison of different irrigation systems for groundnut (Arachis hypogaea L.)

Shivashankar, S. and Mallesh, S. and Saikiran, K. and Sravan, T. and etl, . (2014) Comparison of different irrigation systems for groundnut (Arachis hypogaea L.). International Journal of Agricultural Science and Research, 5 (5). pp. 393-404.

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Abstract

The present study was conducted at Field irrigation laboratory, College of Agricultural Engineering, Bapatla, Andhra Pradesh. Groundnut crop was selected for experimental investigations. This study was aimed to optimize the operating pressure and sprinkler to sprinkler spacing for sprinklers and micro sprinklers, and to compare the water requirement, water use efficiency and final yield of groundnut under flood, sprinkler and micro sprinkler irrigation systems. The crop water requirement for the groundnut crop with duration from February 1st week to June 1st week was calculated using CROPWAT as 727.4 mm for Rabi season for Bapatla region. From the investigations it is clearly evident that, the uniformity coefficient for micro sprinkler is higher (85%) at operating pressure of 1 kg/cm2 and spacing of 2 x 2 m. And for sprinkler the uniformity coefficient is higher (76%) at operating pressure of 1.5 kg/cm2 and spacing of 8 x 8 m. And the yield of groundnut under micro-sprinkler is high (1.35 t/ha) because the uniformity coefficient and water distribution efficiency of micro sprinkler is high when compared to that of sprinkler and flood irrigation systems. By considering all the factors, we can conclude that the efficiency of micro-sprinkler irrigation system is higher than that of the sprinkler and flood irrigation systems. And the optimum operating pressure, spacing for sprinkler and micro sprinkler is 1 kg/cm2 at 2 x 2 m spacing, and 1.5 kg/cm2 at 8 x 8 m spacing respectively.

Item Type: Article
Uncontrolled Keywords: CROPWAT, Groundnut Crop, Uniformity Coefficient, Water Use Efficiency (WUE)
Author Affiliation: College of Agricultural Engineering, Bapatla, Andhra Pradesh, India
Subjects: Plant Production
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 27 Nov 2015 10:20
Last Modified: 27 Nov 2015 10:20
URI: http://eprints.icrisat.ac.in/id/eprint/14043

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