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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(6): 2558-2567
DOI: https://doi.org/10.20546/ijcmas.2018.706.302


Influence of Nutrient Management Approaches on Soil Enzyme Activity, Soil Microbial Population and Grain Yield of Dry Direct Seeded Rice
Raghavendra1*, K. Narayana Rao1, Mahadeva Swamy2 and S. P. Wani3
1Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Raichur-584 104, Karnataka, India
2Department of Agricultural Microbiology, College of Agriculture Raichur, Karnataka, India
3Research Program Director – Asia and Theme Leader- ICRISAT Development Center, Patancheru, Hyderabad-502 324, Telangana, India
*Corresponding author
Abstract:

Nutrient supply and availability during crop growth influences various microbial mediated biochemical reactions and nutrient transformations. Studies were conducted during kharif season of 2015-16 and 2016-17 in the farmer field of Vijayanagar camp, tq/dist: raichur, to study the influence of different nutrient management approaches on soil enzyme activity, soil microbial population and grain yield of dry DSR. Dehydrogenase activity, a key biochemical indicator, was higher (12.09 μg TPF formed g-1 soil hr-1) with application of nutrients as per SSNM approach for targeted yield of 55 q ha-1 in Dry DSR. Farmers’ practice of excessive fertilizer application had negative impact on dehydrogenase activity. The highest phosphatase activity (14.91 μg PNP g-1 soil hr-1) of soil was found with application of nutrients as per targeted yield approach as compared to absolute control (9.47 μg PNP g-1 soil hr-1). Application of nutrients as per SSNM approach for targeted yield of 55 q ha-1 for Dry DSR registered significantly higher soil microbial population viz., bacterial (25.73×106 cfu g-1 of soil), fungal (8.62 × 103 cfu g-1 of soil) and actinomycetes (10.14 × 104 cfu g-1 of soil) and significantly higher the grain and straw yield (54.73 and 68.38 q ha-1, respectively) of dry DSR over farmers practice and other soil test methods.


Keywords: Dry DSR, Enzyme Activity, Soil Microbial Population, Grain yield, SSNM
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How to cite this article:

Raghavendra, K. Narayana Rao, Mahadeva Swamy and Wani S. P. 2018. Influence of Nutrient Management Approaches on Soil Enzyme Activity, Soil Microbial Population and Grain Yield of Dry Direct Seeded Rice.Int.J.Curr.Microbiol.App.Sci. 7(6): 2558-2567. doi: https://doi.org/10.20546/ijcmas.2018.706.302