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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 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.2017.6(12): 1529-1540
DOI: https://doi.org/10.20546/ijcmas.2017.612.171


Potassium Status of Indian soils: Need for Rethinking in Research, Recommendation and Policy
V. Ramamurthy1*, L.G.K. Naidu1, G. Ravindra Chary3, D. Mamatha1 and S.K. Singh2
1ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre,
Hebbal, Bangalore-56002, India
2ICAR-National Bureau of Soil Survey and Land Use Planning, Shankanagar P.O.,Nagpur, 440033, India
3ICAR-Central Research Institute for Dryland Agriculture, Santoshnagar,Hyderabad, 500 059, Telangana, India
*Corresponding author
Abstract:

Growing population and its need pressurize Indian agriculture to produce more from shrinking arable land. Balanced nutrition plays a key role in enhancing the productivity of crops and sustainability of production systems. Potassium is third most important plant nutrient. Recent studies showed declining status of K in majority of the soils in India. High crop K removal than K addition by farmers and imbalanced use of NPK fertilizers contributed to large-scale K mining and K deficiency in soils and crops. K fertility depletion observed in all soil types. Widespread K deficiency was identified in rice-wheat system of Indo-Gangetic plains, horticultural, plantation, ornamental, aromatic and avenue plants. The current fertilizer recommendations are obsolete, very much generalized without considering the soil types, hence need revision and revalidation. Site-specific fertilizer recommendations, if followed can minimize the fertility K depletion and maintain productivity and sustainability and also economize the fertilizer cost. Awareness on K use by farmers needs immediate action.


Keywords: K status, Indian soils, Fertilizer misapplication, Site-specific K recommendation, Policy initiatives.
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How to cite this article:

Ramamurthy, V., L.G.K. Naidu, G. Ravindra Chary, D. Mamatha and Singh, S.K. 2017. Potassium Status of Indian Soils: Need for Rethinking in Research, Recommendation and Policy.Int.J.Curr.Microbiol.App.Sci. 6(12): 1529-1540. doi: https://doi.org/10.20546/ijcmas.2017.612.171