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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.
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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 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(2): 1757-1764
DOI: https://doi.org/10.20546/ijcmas.2018.702.213


Influence of Pyrazosulfuron-Ethyl on Soil Microflora, Weed Count and Yield of Transplanted Rice (Oryza sativa L.)
Rajinder Kumar*, Ankit Rana, S.S. Rana, M.C. Rana, Neelam Sharma and G.D. Sharma
Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur (HP)-176 062, India
*Corresponding author
Abstract:

The use of herbicides in rice may affect the soil’s biological equilibrium and thus influences its nutrient status, health and productivity. To know about the effect of herbicides on soil microbial populations in rice, a field experiment was conducted at Palampur during kharif 2016 and 2017. Ten treatments, comprised of company released sample of pyrazosulfuron-ethyl 10% WP at 10, 15, 20 and 30 g ai/ha was compared to market sample at 10 and 15 g/ha, bispyribac- sodium at 20 and 40 g/ha, hand weeding twice and weedy check on a silty clay loam soil. The prevalence of Echinochloa crusgalli, E. colona, Cyperus difformis, C. iria, and Ammannia baccifera were the major weeds associated with rice crop. The results revealed great influence of different doses of pre-emergence (PE) pyrazosulfuron-ethyl 10% WP on the population of total bacteria, fungi and actinomycetes initially after 5th day of its application (9 DAT). Pyrazosulfuron-ethyl 10% WP at 30 g ai/ha exerted maximum reduction in bacterial, fungal and actinomycetes population in the tune of 20.86, 26.39 and 14.12%, respectively. Post-emergence (POE) bispyribac sodium 40 g/ha was found to reduce the population of bacteria, fungi and actinomycetes by 21.28, 28.81 and 15.29%, respectively, after 5 days of herbicide application (30 DAT). The market sample of pyrazosulfuron-ethyl 10% WP 15 g/ha showed higher reduction on 5 days after spray over the company sample. The population of microorganisms under observation was recovered from initial herbicide impact on 15 days after their spray. Pyrazosulfuron 30 g/ha remaining at par with pyrazosulfuron 20 g/ha gave significantly higher yield of rice over other weed control treatments.


Keywords: Bacteria, Fungi, Actinomycetes, Herbicides and rice
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How to cite this article:

Rajinder Kumar, Ankit Rana, S.S. Rana, M.C. Rana, Neelam Sharma and Sharma, G.D. 2018. Influence of Pyrazosulfuron-Ethyl on Soil Microflora, Weed Count and Yield of Transplanted Rice (Oryza sativa L.).Int.J.Curr.Microbiol.App.Sci. 7(2): 1757-1764. doi: https://doi.org/10.20546/ijcmas.2018.702.213