Vol. 12, Issue 8 (2023)

Author(s):
Devanand T Kusumbe, Mohini R Punse, Nikita S Raut and Basappa Karajanagi

Abstract:
Afield experiment was conducted at College of Agriculture, Nagpur during kharif season of 2016-17 on sorghum with the objectives to study the effect of integrated nitrogen management and biofertilizer inoculation on yield of kharif sorghum and to work out the economics in spilt plot design with five integrated nitrogen management treatments as main factor viz., T₁- Control, T₂- 100% RDN through urea, T₃- 75% RDN through urea + 25% RDN through FYM, T4- 50% RDN through urea + 50% RDN through FYM, T5- 5 t FYM ha^-1 and two biofertilizer inoculation as sub factor viz., B₁- Azotobacter seed treatment and B2- Azospirillum seed treatment replicated thrice making up total 30 number of plots. Treatment 50% RDN through urea + 50% RDN through FYM was found significantly superior over all the treatments in respect of yield and economics character viz., length of earhead (29.00), grain yield plant^-1 (40.00 g) and consequently produced higher grain yield (49.55 q ha ^-1) as well as fodder yield (71.72 q ha ^-1) at harvest and GMR (Rs. 99948), NMR (Rs. 72151) and B: C ratio (3.60) ratio was found maximum. The uptake of nitrogen in grain (72.28 kg ha^-1) and fodder (33.42 kg ha^-1) was significantly higher in 50% RDN through urea + 50% RDN through FYM. In biofertilizer inoculation, Azospirillum seed treatment was found significantly higher at all stages of crop growth in respect of yield and economics character viz., length of earhead (27.27), grain yield plant-1 (37.87 g) and consequently produced higher grain (44.05 q ha ^-1) as well as fodder yield (65.40 q ha ^-1) and GMR (Rs. 89100), NMR (Rs. 63940) and B: C ratio (3.53) was found higher. The uptake of nitrogen in grain (61.81 kg ha^-1) and fodder (27.44 kg ha^-1) was significantly higher with Azospirillum seed treatment while available nitrogen was significantly higher with Azotobacter seed treatment.