Vol. 5 (4) : July-August 2014 issue
Green Farming Vol. 5 (4) : 563-567 ; July-August, 2014
Microbial population and soil under different N levels and Azotobacter strains in finger millet
SANDEEP UPADHYAY1*, N. KUMAR2, D. TIWARI3 and M. NAILWAL4
Department of Soil Sciences, College of Agriculture, G.B. Pant University of Agric. & Tech., Pantnagar, Dist. U.S. Nagar - 263 145 (Uttarakhand)
Designation : 1,3Teaching Research Personnel *(mistersandeep@gmail.com), 2Professor, 4Research Scholar
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
Paper No. : P-1645
Total Pages : 4
Received : 12 March 2014
Revised accepted : 23 July 2014
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Citation :
SANDEEP UPADHYAY, N. KUMAR, D. TIWARI and M. NAILWAL. 2014. Microbial population and soil under different N levels and Azotobacter strains in finger millet. Green Farming Vol. 5 (4) : 563-567 ; July-August, 2014
ABSTRACT
In a field experiment, seven nitrogen levels (Control N0, N @ 10 kg ha-1, N20, N30, N40, N50 and N60) and three inoculation levels (Control I0, Azo1, Azo2 viz. uninoculated, Azo-SBT 72 and Azo-SUW 82 strains) were studied for change in soil microbial population under finger millet. Change in microbial count studied at two stages 45 and 95 DAS. Study showed that Azotobacter population decreased with nitrogen levels. However, total bacterial and fungal count increased with applied nitrogen levels. Inoculated Azo2 strain significantly increased Azotobacter, total bacterial and fungal count in comparison to control at both stages. The split fertilizer dose of N at 30 days most likely disturbed Azotobacter population at 45 DAS thus Azotobacter declined with increased N levels. At 95 DAS, maximum Azotobacter count was recorded by application of 40 kg N ha-1 then it declined significantly with 60 kg N ha-1.
Key words :
Azotobacter, Bacterial population, Fungal count, Finger millet, Nitrogen levels.
