INOCULATION EFFECT OF EFFICIENT BACTERIAL K-ISOLATES AND LEVELS OF MINERAL K ON ENZYMATIC ACTIVITY IN RHIZOSPHERE OF MAIZE (Zea mays L) AT DIFFERENT GROWTH PERIODS

INDRA BAHADUR¹*, BIHARI RAM MAURYA^2
1Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
²Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
* Corresponding Author : ibm07025@gmail.com

Received : 09-01-2017     Accepted : 03-06-2017     Published : 28-06-2017
Volume : 9     Issue : 6       Pages : 899 - 901
Int J Microbiol Res 9.6 (2017):899-901

Keywords : Efficient bacterial isolates, Enzymatic activity, Rhizosphere, maize, Bacterial K-isolates
Academic Editor : Jagdish Lavanya
Conflict of Interest : None declared
Acknowledgements/Funding : Sincere thanks to Head, Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University. Indra Bahadur thankful to University Grants Commission (UGC, New Delhi), Government of India (GOI) for Doctoral Fellowship
Author Contribution : All author equally contributed

Soil microorganisms constitute the largest section of living things with varying potential in its habitat, biochemical, physiological processes and nutritional characteristics. They play an important role in remediation, biomedicine, environmental and agricultural area. Current trends in agriculture are focused on reduction of the use of chemical fertilizers and use of alternative ways to improve crop yield in a sustainable manner. JHK2 showed the maximum activity with 60 kg K2O ha-1 and it was at par with the activity of BRG 6. The experimental treatments had a significant impact on rhizosphere soil enzyme activity. When K was applied @ 60 kg K2O ha-1, the urease activity of JHK2 and JHG11 was at par to each other. Application of 40 kg K2O ha-1 of K, APN7 and RJJ4 resulted similar activities. Increasing the level from 20 to 60 kg K2O ha-1, RJJ 4 was found maximum activity. When K was applied @ 40 kg K2O ha-1, RJJ 4 and JHG 11 showed similar activity and 14.63% higher activity than control. In the entire crop period, the alkaline phosphatase activity increased initially at 30 DAS and then declined with the age of the crop

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