International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 10, Issue:1, January, 2021

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2021.10(1): 3347-3353

Delineation and Mapping of Soil Available Zinc and Boron Status in Soils of Vellore District of Tamil Nadu 
Soniya Purma1*, D. Muthumanickam2 and M. R. Reshma3
1AICRP on Micro & secondary nutrients and pollutant elements in soils and plants, Hyderabad Centre, India
2Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
3Department of Soil Science and Agricultural Chemistry, Kerala Agricultural University, India
*Corresponding author

The study was conducted in soils of Vellore district of Tamil Nadu to delineate the soil available zinc and boron status. Totally 3010 soil samples were collected @ 4 samples per village covering 743 panchayat villages in 20 blocks of Vellore district. Samples were collected randomly at 0-15 cm depth and the GPS data (Latitude ºN and Longitude ºE) were recorded from each sampling site. Soil samples were analyzed for DTPA-Zn (Di-ethylene Tri-amine Penta Acetic acid extractable Zinc) and HWS-B (Hot Water Soluble Boron). The availability of zinc and boron in the soils of Vellore was marginal pertaining to fertility status.  The analytical results were used for calculating per cent deficiency, nutrient index values and fertility ratings. The thematic maps were generated to show the extent of micronutrients deficiency or sufficiency based on block mean, nutrient index values and spatial variability. Deficiency of Zn was noticed in Jolarpet, Tiruppathur and Madhanur blocks which demands suitable management strategies for zinc nutrition of crops. Next to Zn, B deficiency was evidenced significantly in certain villages of Sholinghur block. A totally 44.3 per cent of the samples were found to be Zn deficient and 29.1 percent of the samples were found to be B deficient. The fertility rating class for Zn & B is marginal for which nutrient index values are 1.86 for zinc and 1.91 for boron.

Keywords: Di-Ethylene Tri-Amine Penta Acetic Acid (DTPA), Hot Water Soluble, Nutrient Index Values, Fertility Ratings and Thematic Maps

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How to cite this article:

Soniya Purma, D. Muthumanickam and Reshma, M. R. 2021. Delineation and Mapping of Soil Available Zinc and Boron Status in Soils of Vellore District of Tamil Nadu.Int.J.Curr.Microbiol.App.Sci. 10(1): 3347-3353. doi:
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