Field experiment was carried out at Krishi Vigyan Kendra farm, Veterinary College and Research Institute campus, TANUVAS, Namakkal, Tamil Nadu during 2012–13 and 2013–14 with a aim to study the effect of different paired row drip system (60/90 × 50 cm and 60/120 × 50 cm), irrigation regimes (Drip irrigation at 100% PE and 150% PE) and N fertigation levels (75, 100 and 125% of recommended dose of N fertilizer) in Bajra Napier hybrid grass CO (CN) 4. The experiment was laid out in randomized block design with three replications. Paired row system of planting at 60/90 x 50 cm crop geometry with drip irrigation at 150 per cent pan evaporation (PE) and N fertigation at 125 per cent recommended dose of nitrogen (RDN) registered significantly higher plant height, number of tillers m−2, number of leaves m−2, green fodder yield (388.06 and 366.35 tonnes ha−1) and dry matter yield (79.24 and 76.28 tonnes ha−1) and it was comparable with paired row system of planting at 60/90x50 cm spacing, irrigation at 100 per cent PE and N fertigation at 125 per cent RDN which recorded a green fodder yield of 368.17 and 349.83 tonnes ha−1 and dry matter yield of 75.62 and 72.87 tonnes ha−1, respectively during 2012–13 and 2013–14. Surface method of irrigation with 100 per cent RDF through conventional method of fertilizer application resulted in lowest green fodder yield of 280.94 and 252.55 tonnes ha−1 and dry matter yield of 57.91 and 52.60 tonnes ha−1 during 2012–13 and 2013–14, respectively.
Bajra Napier hybrid grass, paired row planting system, irrigation regimes, N fertigation, growth and fodder yield
