Title: Effect of N and P levels and biofertilizers on the growth and yield of wheat under late sown irrigated conditions.
Abstract: A field experiment was conducted during the rabi season of 2002-2003 at the wheat research unit of Dr.P.D.K.V. Akola to study the effect of N and P levels and biofertilizers on the growth and yield of wheat under late sown irrigated conditions. Four NP fertilizer levels (0:0, 40:20, 60:30 and 80;40 kg NP/ha corresponding to control, 50%, 75%, and 100% RDF) in main plots and four biofertilizer treatments (control,Azotobacter, Phosphate Solubilizing bacteria(PSB) and coinoculation of Azotobacter+ PSB) in subplot were replicated four times in split plot design. The growth and yield attributes showed an increase with increase in the NP fertilizer levels.100% RDF recorded significantly highest grain yield (32.40 q/ha) and staw yield (39.78 q/ha). Azotobacter and PSB inoculation, being at par caused significant improvement in the growth and yield attributes over control. Co-inoculation of both the biofertilizers further increased the growth and yield attributes over individual inoculation. Combined inoculation yielded maximum grain yield (26.06 q/ ha) and staw yield (33.69 q/ha). Interaction effect showed that application of 60:30 kg N:P/ha (75%RDF) coupled with combined inoculation registered significantly higher grain yield (30.96 q/ha) of wheat with higher net profit, B:C ratio than those with 80;40 kg N:P/ha (100%RDF) (30q/ha) without biofertilizer inoculation. Thus 25% saving in nitrogen and phosphorus application could be possible with combined inoculation of Azotobacter+ PSB.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 2
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