Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2019) [Effective from January 1, 2019]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(1): 1497-1516
DOI: https://doi.org/10.20546/ijcmas.2019.801.160


Field Evaluation of Nitrogen Fixing Endophytic Bacterium Gluconacetobacter diazotrophicus NFGM5 on Growth and Yield of Maize
Hema C. Rao* and V.P. Savalgi
Department of Agricultural Microbiology, University of Agricultural Sciences, Dharwad – 580005, Karnataka, India
*Corresponding author
Abstract:

A field experiment was conducted with efficient isolates of endophytic nitrogen fixing bacteria i.e., Gluconacetobacter diazotrophicus NFGS25 and NFGM5 which were isolated from the roots of sugarcane and maize, based on the results of pot culture studies on maize. NFGS25 and NFGM5 were confirmed by the molecular characterization using 16S rDNA method. At 30 DAS(days after sowing), the growth parameters such as plant height (52.17 cm), stem girth (3.53 cm), chlorophyll content (32.5), root length (60 cm), dry matter production of shoot (3.5 g per plant) and root (0.57 g per plant) of maize were maximum in the treatment inoculated with NFGM5 at 75 % RDN level. The per cent shoot nitrogen content was maximum in the treatment inoculated with, NFGM5 and NFGS25 at 75 % RDN (0.37 %). At 100 % RDN, NFGM5 recorded higher shoot nitrogen of 0.27 % as compared to NFGS25 (0.23 %) at 30 DAS. The nitrogen uptake was significantly higher in the treatment NFGM5 at 75 %RDN (8.65 g plant-1) followed by NFGS25 (7.73 g   plant-1). The population of G. diazotrophicus was maximum in the treatment inoculated with NFGM5 at 75 % RDN (9.8 x 104 CFU g-1) followed by NFGS25 (3.5 x 104 CFU g-1) at 60 DAS. The yield parameters like number of cobs per plant (2.07), cob weight per plant (295.93 g), grain yield per plant (250.03 g), grain yield (183.33 q ha-1) and test weight (40.17 g) were significantly highest in the treatment NFGM5 at 75 % RDN followed by NFGS25 at 75 % RDN. It is evident that, Gluconacetobacter diazotrophicus isolates inoculated with graded level of recommended dose of nitrogen promotes plant growth and grain yield under field condition.


Keywords: Gluconacetobacter diazotrophicus, Growth parameters, Per cent Nitrogen, Nitrogen uptake, Yield parameters and Maize
Download this article as Download

How to cite this article:

Hema C. Rao and Savalgi, V.P. 2019. Field Evaluation of Nitrogen Fixing Endophytic Bacterium Gluconacetobacter diazotrophicus NFGM5 on Growth and Yield of Maize.Int.J.Curr.Microbiol.App.Sci. 8(1): 1497-1516. doi: https://doi.org/10.20546/ijcmas.2019.801.160