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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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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.2019.8(8): 2169-2184
DOI: https://doi.org/10.20546/ijcmas.2019.808.253


Assessment of Spatial Variability of Soil Nutrient Status in Rice Ecosystem Using Nutrient Index in Anaimalai Block, Coimbatore
K. Theresa*, R. Shanmugasundaram and J.S. Kennedy
Department of Soil Science and Agricultural Chemistry, Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
*Corresponding author
Abstract:

Geo referenced soil survey was undertaken in rice growing areas of Anaimalai Block, Coimbatore district of Tamil Nadu. The main aim of this study was to carry out the evaluation of soil fertility and fertilization practices being followed by the rice growing farmers of the selected villages in Anaimalai block. Soil samples were collected from 18 villages with an auger from a depth of 0-15 cm and analyzed for pH, electrical conductivity, organic carbon, available macro and micro nutrients using standard analytical methods. These data were used to spot the range of critical soil available nutrient and the relationships among the soil fertility parameters. Based on the results obtained, soil reaction was neutral to alkaline in nature. Electrical conductivity was found to be in safer limit (<1 dS m-1) and almost 70 per cent of the villages fall under the medium category of soil organic carbon content. Results indicated that 70 percent of the samples are low to medium in available nitrogen; for Olsen P, it was 55 percent in medium status, 25 percent of the samples was under the highest P category (16-22 kg ha-1); and about 80 per cent of the samples were medium in NH4OAc – K. Except Cu, other micronutrients were deficient. From the nutrient index, Cu was above sufficiency range, P and Fe were found to be adequate and the other elements were deficit in soil.


Keywords: Rice, Nutrient index, Macro and micro nutrients, Anaimalai block
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How to cite this article:

Theresa, K., R. Shanmugasundaram and Kennedy, J.S. 2019. Assessment of Spatial Variability of Soil Nutrient Status in Rice Ecosystem Using Nutrient Index in Anaimalai Block, Coimbatore.Int.J.Curr.Microbiol.App.Sci. 8(8): 2169-2184. doi: https://doi.org/10.20546/ijcmas.2019.808.253