首页|Assessment of N_2 Fixing Efficiency of Beijerinckia indica and Azospirillum brasilense in Sorghum (Sorghum bicolor (L.) Moench) using ~(15)N Tracer
Assessment of N_2 Fixing Efficiency of Beijerinckia indica and Azospirillum brasilense in Sorghum (Sorghum bicolor (L.) Moench) using ~(15)N Tracer
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NSTL
For studying the benefits of inoculation of N_2 fixing diazotrophs in the root zone of sorghum crop, a pot culture was conducted on neutral red sandy loam soil with sorghum cv. CO26, using ~(15)N tracer. At the end of 45 days duration after sowing, Beijerinckia indica inoculation contributed 56.9 per cent N derived from N_2 fixation, out of total N concentration in whole drymatter of sorghum plant. It proved to be the efficient N_2 fixer by contributing N from N_2 fixation to the tune of 17.6 Kg N ha~(-1). Accumulation of N derived from N_2 fixation from B. indica was primarily in leaf blade (50.0%) followed by stem (31.8%), leaf sheath (14.0%) and root (4.2%). Inoculation of Azospirillum brasilense accelerated uptake of N from soil and fertilizerN sources compared to B. indica and hence registered low N fixation.
NSTL
