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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 (2020)
[Effective from January 1, 2020]
For more details click here

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

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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): 424-435
DOI: https://doi.org/10.20546/ijcmas.2018.706.048


Effect of Potassium and Crop Residue Levels on Potassium Solubilizers and Crop Yield under Maize-Wheat Rotation
M. Raghavendra1*, Y.V. Singh2, Sunita Gaind3, M.C. Meena4 and T.K. Das5
1ICAR- Indian Institute of Soybean Research, Khandwa Road, Indore- 452001, (MP), India
2CCUBGA, ICAR- Indian Agricultural Research Institute, New Delhi-110 012, India
3Microbiology Division, ICAR- Indian Agricultural Research Institute, New Delhi-110 012, India
4Soil Science and Agriculture Chemistry, ICAR- Indian Agricultural Research Institute, New Delhi- 110 012, India
5Agronomy Division, ICAR- Indian Agricultural Research Institute, New Delhi-110 012, India
*Corresponding author
Abstract:

To study the effect of different levels (0, 2, 4 and 6 t ha-1) of wheat and maize crop residues (CR), potassium (K) doses [50, 100, 150% recommended K and 50% RDK+K solubilising bacteria (KSB)] and a combination of CR+K doses on maize and wheat crop yield and KSB population, a field experiment was conducted during 2014-15 and 2015-16, following split plot design. The biological yield and KSB population in soil under both the test crops responded positively to CR and K management practices. Wheat and maize CR retention of 4 t ha-1 recorded significantly higher biological yield of maize and wheat, compared to their un-amended controls (11.88 and 12.04 t ha-1 in maize and 12.09 and 12.77 in wheat during 2014-15 and 2015-16, respectively). The viable population of KSB in inoculated soil under maize increased to 24.1 and 26.3 x104 cfu g-1 soil at 60 days after sowing (DAS) and 25.7, 27.9 x104 cfu g-1 soil in wheat compared to their 30 DAS values of 15.5, 16.3 x 104 cfu g-1 in maize, 15.8, 16.8 x104 cfu g-1 in wheat during test years of 2014-15 and 2015-16. Statistically insignificant difference in yield and KSB population was observed with KSB+ CR at 4 and 6 t ha -1. Application of 50 % RDK+KSB resulted in highest biological yield (13.32, 14.46 t ha-1 in maize and 13.51, 14.34 t ha-1 in wheat). A positive correlation between biological yield of maize and wheat, yield components and KSB population was recorded at harvest stage.


Keywords: Crop residue, Potassium, Zero tillage, Yield, Maize, Wheat and Potassium solubilising bacteria (KSB)
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How to cite this article:

Raghavendra, M., Y.V. Singh, Sunita Gaind, M.C. Meena and Das, T.K. 2018. Effect of Potassium and Crop Residue Levels on Potassium Solubilizers and Crop Yield under Maize-Wheat Rotation.Int.J.Curr.Microbiol.App.Sci. 7(6): 424-435. doi: https://doi.org/10.20546/ijcmas.2018.706.048