'' '' '' '' Revised Soil Phosphorus Test Ratings (RSPTR), Critical Limits (CL) and Phosphorous Recommendation for Maize
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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here
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Original Research Articles                      Volume : 6, Issue:11, November, 2017

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.2017.6(11): 295-309
DOI: https://doi.org/10.20546/ijcmas.2017.611.034


Revised Soil Phosphorus Test Ratings (RSPTR), Critical Limits (CL) and Phosphorous Recommendation for Maize
M. Chandrakala1*, C.A. Srinivasamurthy2, Sanjeev Kumar3, S.Bhaskar4, V.R.R. Parama5 and D.V. Naveen6
1National Bureau of Soil Survey and Land Use Planning, Regional Centre, Hebbal, Bangalore-560 024, Karnataka, India
2Director of Research, Central Agricultural University, Imphal, Manipur, India
3National Dairy Research Institute, Karnal Haryana 132001
4ADG, NRM Division, New Delhi, India
5Dept. Soil Science and Agricultural Chemistry, UAS, Bangalore-560 065, Karnataka, India
6Deptartment of Soil Science and Agricultural Chemistry, Sericulture College,Chintamani, Karnataka, India
*Corresponding author
Abstract:

The current soil test phosphorous ratings of low, medium and high fertility classes and critical limits were revised by studying the response of maize in 24 soils of varied initial P fertility, treated with graded levels of P. The revised SPTR were <15.50, 15.51-28.00, 28.10-48.50 and >48.50 kg P2O5 ha-1, VL: L: M: H, respectively. CL for soil was 17.0 kg P2O5 ha-1 and 0.12 per cent for plant. Maize yield can be maximized by recommending phosphorous @ 150, 125, 100 and 75 percent of the recommended dose in the respective soils of VL: L: M: H fertility ratings.


Keywords: Soil available phosphorus ratings, Revalidation, Critical limits, Maize.
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How to cite this article:

Chandrakala, M., C.A. Srinivasamurthy, Sanjeev Kumar, S. Bhaskar, V.R.R. Parama and Naveen, D.V. 2017. Revised Soil Phosphorus Test Ratings (RSPTR), Critical Limits (CL) and Phosphorous Recommendation for Maize.Int.J.Curr.Microbiol.App.Sci. 6(11): 295-309. doi: https://doi.org/10.20546/ijcmas.2017.611.034
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.
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