Follow
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.
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
For more details click here
journals IJCMAS
See Guidelines to Authors
Current Issues

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 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(3): 1121-1130
DOI: https://doi.org/10.20546/ijcmas.2017.603.130


Releasing Characteristics of Potassium in Some Coastal Soils of West Bengal
Ranajit Panda1* and Sanmay Kumar Patra2
1RRS (OAZ), Majhian, UBKV, West Bengal, 733133, India
2Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal-741252, India
*Corresponding author
Abstract:

The amounts of K release in successive extraction with hot 1N HNO3 decreased consistently and reached to plateau at 6th to 8th extractions in the soils. The K release in the 1st extraction was 452.6 to 890.9 mg/kg, whereas at 9th extraction it was 8.2 to 13.1 mg/kg. The step K contents of the soils varied from 663.2 to 1452.7 mg/kg. The ratio of step K to non-exchangeable K of the soil was in the range of 1.22 to 1.38 which may be used as a better index of mobilization of non-exchangeable K reserves to plants. The constant rate K of the soils as a measure of availability index of K under long-term basis varied within the limit of 8.2 to 13.1 mg/kg which reached a constant level at the sixth to eighth extractions. Step K, constant rate K and cumulative K release had significant positive correlations with pH, EC, CEC, water soluble K, exchangeable K, available K, non-exchangeable K and lattice K. The K releasing power evaluated through step K and constant rate K could be meaningful for making fertilizer recommendation programme especially in the intensively cultivated areas.


Keywords: K-releasing characteristics, Step-k, Constant rate-k, Cumulative-k release.
Download this article as Download

How to cite this article:

Ranajit Panda and Sanmay Kumar Patra. 2017. Releasing Characteristics of Potassium in Some Coastal Soils of West BengalInt.J.Curr.Microbiol.App.Sci. 6(3): 1121-1130. doi: https://doi.org/10.20546/ijcmas.2017.603.130