Vol. 11, Issue 10 (2022)

Author(s):
M Mohini Kumari, N Venkata Lakshmi, SBS Narasimha Rao and P Madhuvani

Abstract:
Irrigation water is one of the most important input which is scarce and expensive. Water conservation can be carried out either through tillage or land surface management. Land configuration is the best method to reduce the yield loss, and helps in infiltration of rainfall, prevents runoff and improves water use efficiency. Appropriate irrigation system will supply uniform distribution of water which is essential to increase crop yield. Micro irrigation system offers a great degree of control over water and fertilizer application to meet the requirement of crops. A field experiment was conducted during rabi season of 2021-22 to appraise the performance of groundnut under the cumulative influence of land configurations, irrigation schedules and fertigation levels at Agricultural Research Station, Garikapadu. The experiment was conducted in a split-split plot design with three replications. The experiment comprised of sixteen treatment combinations with two Land configurations viz., raised bed and furrow (M1), flat bed (M2) as main plots, two Irrigation schedules viz., irrigation on every 3rd day (I1), irrigation on every 5th day (I2) as sub plots and four fertigation levels viz., 100% RDF through drip (F1), 75% RDF through drip (F2), 50% RDF through drip (F3) and 100% RDF as soil application (F4) in sub-sub plots. The results revealed that raised bed and furrow recorded significantly higher plant height, Dry matter accumulation, yield attributes and yield of rabi groundnut over flat bed. Irrigation on every 3rd day recorded significantly higher yield attributes and yield over irrigation on every 5th day. Among the different fertigation levels, application of 100% RDF through drip recorded the highest pod, kernel and haulm yield, whereas 75% RDF through drip was found on a par with the 100% RDF as soil application.