A field experiment was conducted during rabi 2007–08 cropping season The trial was laid out in RBD with 3 replications. The treatment combinations consisted of irrigation schedules and fertigation levels (8); irrigation scheduled at 1.0 and 0.75 Epan, fertilizer doses (100% NPK RDF and 75% NPK RDF) and fertilizer forms (water soluble and straight fertilizers). The grain yield was significantly higher (7.46 t/ha) in fertigation scheduled at 1.0 Epan and 100% RDF with water soluble fertilizers (MAP, urea, KNO3) over fertigation at 1.0 Epan with 100% RDF through conventional fertilizers (N&K fertigation and P as basal soil application). The water productivity (kg/m3) was highest in fertigation at 1.0Epan (1.70 kg/m3) with 100% RDF with water soluble fertilizers (MAP, urea, KNO3) which was closely followed by fertigation at0.75 Epan (1.50 kg/m3) coupled with 75% RDF with water soluble fertilizers (MAP, urea and KNO3) over conventional method of ridge and furrow irrigation with 100% RDF through conventional fertilizers (0.74/m3).
Maize, Drip Irrigation, Fertigation, Water Productivity
