Water Use Efficiency and Nutrient Use Efficiency of Aerobic Rice as Influenced by Levels of Irrigation and Drip Fertigation

Now a days farming is more commercialized and there is a growing awareness on the need for improved efficient management of inputs such as water and fertilizers management. A field experiment was conducted during kharif 2014 to study the influence of drip fertigation on water use efficiency and nutrient use efficiency of aerobic rice at Zonal Agricultural Research Station, V.C. Farm, Mandya. Application of (T₇) irrigation @100% CPE + DF 125% RDF recorded significantly higher water use efficiency (55.53 kg ha-cm⁻¹) as followed by (T₄) irrigation @ 100% CPE + DF 100% RDF (54.97 kg ha-cm⁻¹), (T₈) irrigation @125% CPE + DF 125% RDF (52.05 kg ha-cm⁻¹). However, conventional method of flooded condition (UAS package) registered lowest water use efficiency (14.99 kg ha-cm⁻¹).