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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.2020.9(2): 3017-3020
DOI: https://doi.org/10.20546/ijcmas.2020.902.346


Fixation of critical level of available magnesium in soils of maize growing tracts of Pudukkottai district of Tamil Nadu, India
P. Sankaralingam* and P. Malarvizhi
Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-3, India
*Corresponding author
Abstract:

In order to assess the response of maize to applied Mg (0, 5, 10, 15, 20 and 25 kg ha-1) for arriving at the optimum Mg level for this crop and to fix the critical limit of Mg, field experiments were conducted in 14 farmer’s holdings at Pudukkottai district with Hybrid Maize (NK 6240) as a test crop by adopting the Cate and Nelson graphical and statistical (analysis of Variance method) method of critical limit fixation. The soil Magnesium (Mg) content varied from 24 to 408 mg/kg and the Bray’s percent yield varied from 76.2 to 95.0 and these were used to fix the critical limit of Magnesium (Mg) in soil. The R2 value ranged from 0.09 to 0.88 and the postulated critical level of Mg in soil corresponding to the highest R2 (0.88) was recorded as 84 mg/kg.


Keywords: Maize, Magnesium, Grain Yield, Critical limit
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How to cite this article:

Sankaralingam, P. and Malarvizhi, P. 2020. Fixation of critical level of available magnesium in soils of maize growing tracts of Pudukkottai district of Tamil Nadu, India.Int.J.Curr.Microbiol.App.Sci. 9(2): 3017-3020. doi: https://doi.org/10.20546/ijcmas.2020.902.346