1Department of Agronomy, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, 500030, Telangana, India
2Jain Irrigation Systems Ltd, Jalgaon, 425002, Maharashtra, India
This study aims to derive the impacts of different drip irrigation and fertigation schedules on seasonal evapotranspiration and crop coefficient during various growth stages of turmeric in Jalgaon, Maharashtra during 2014-16. Two seasons of experimentation were used with five different irrigation schedules and four fertigation levels which provided field data for measure out and corroborate the seasonal evapotranspiration and crop coefficients for all the treatments. Highest seasonal ETa (1071.8 and 1109.6 mm in 2014-15 and 2015-16, respectively) were registered with surface irrigation at 1.0 IW/CPE ratio. In the present experiment, reduction in seasonal ETc with increasing irrigation levels was observed in the order of surface irrigation. The crop in surface irrigation at 1.0 IW: CPE ratio registered higher Kc values on reference crop evapotranspiration (ET0) basis in comparison to all drip irrigation treatment at different crop growth stages. Each higher level of nitrogen and potassium ratio increased the Kc values over its lower levels at all the crop growth stages during both the years.
Crop coefficient, Evapotranspiration, Fertigation, Irrigation, Maharashtra, Nutrients ratio, Turmeric
