Vol. 3 (6) : November-December 2012 issue
Green Farming Vol. 3 (6) : 656-659 (November-December, 2012)
Vertical distribution of phosphorous fractions in profiles of vertisol & inceptisol of different agroclimatic zones of Karnataka
K.S. NIRANJANAa1, GANAPATHIb2* and H.M. CHIDANANDAPPAc3
aHorticultural Research Station, Sringere, University of Horticulture, Bagalkot - 587 102 (Karnataka)
bOrganic Farming Research Center, Zonal Agricultural Research Center, Navile, Shimoga - 577 204 (Karnataka)
cDeptt. of Soil Sci. & Agricul. Chemistry, University of Agricultural Sciences, College of Agric., Navile, Shimoga (K.K.)
Designation : 1Techn. Asstt., 2Asstt. Professor *(ganapathiguddekoppa@yahoo.com), 3Professor and Head
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
Paper No. :
Total Pages : 4
Received : 30 June 2012
Revised accepted : 06 September 2012
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Citation :
K.S. NIRANJANA, GANAPATHI and H.M. CHIDANANDAPPA. 2012. Vertical distribution of phosphorous fractions in profiles of vertisol & inceptisol of different agroclimatic zones of Karnataka. Green Farming Vol. 3 (6) : 656-659 ; November-December, 2012.
ABSTRACT
The physico-chemical properties and vertical distribution of phosphorus fractions were studied in six profiles coming under vertisol and inceptisol of different agro-climatic zones of Karnataka. Ca-P was the dominant fraction and comprised 20.00 per cent of total P. The relative abundance of different fractions was in the order of Ca-P (139.57 ppm) > Fe-P (89.01 ppm) > occluded-P (71.93 ppm) > Reduced-P (61.72 ppm) > A1-P (46.59 ppm) > saloid P (20.93 ppm). Organic P constituted 37.44 per cent of total P with an overall mean of 277.45 ppm. Total P content ranged from 429.40 to 1315.22 ppm with a mean value of 707.08 ppm. Soil CEC, Iron oxide, pH, silt and clay content play an important role in distribution of phosphorus fractions in soil.
Key words :
Inceptisol, P fraction, Soil profile, Soil physico-chemical properties, Vertical distribution, Vertisol.
