Abstract
A factorial pot experiment was conducted in plastic house using complete randomize design (CRD), to study the effect of inoculation with Azotobacter and phosphorous solubilizing bacteria, organic manures and phosphorous fertilizer levels on some growth characteristics and wheat yield. The inoculation with Azotobacter, phosphorous solubilizing bacteris (local isolate) or both together caused significant increases in plant height of 5%, 4.32% and 9.76% respectively as compared with control treatment, however, no significant differences were noticed with all phosphorous fertilizer and organic manure levels. The inoculation ,phosphorous fertilizer levels and organic manure treatments caused a significant increases in both shoot dry weight and biological yield as compared with control treatment. The inoculation levels gave a significant increases in grain yield (ton.ha-1) of 12.95%, 12% and 25.16% respectively as compared with non-inoculated treatment Phosphorous fertilizer levels caused a significant increases in grain yield, however, no significant increases was noticed between 80 kg superpgosphate.ha-1 and rock phosphate treatment. Soil amended with 2% organic manure gave a significant increases in grain yield of 15.44% as compared with control treatment .Highest grain yield (3.98ton.ha-1) was obtained in soil treated with 160 kg superpgosphate.ha-1, 2% organic manure and inoculated with both Azotobacter and phosphorous solubilizing bacteria
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