Year: 2016 | Month: April | Volume 9 | Issue 2
Distribution of different forms of potassium under temperature conditions of Kashmir
Abstract:
A study was conducted in temperate conditions of Kashmir valley to study the distribution of different form of potassium. Surface soil samples were collected from two different agro-climatic zones of district Anantnag i.e. High altitude zone (1965-1850 msl) and low altitude zone ( 1540-1695 msl). Surface soils were fine textured ranging from clay loam to silty clay loam with organic carbon content varying from 0.61-1.73%. Water soluble K ranged from 0.010-0.038 [cmol(p+)kg-1], available K ranged from 0.134-0.313 [cmol(p+)kg-1], Exchangeable K ranged from 0.124-0.275 [cmol(p+)kg-1], Boiling HNO3 K ranged from 1.568-2.938 [cmol(p+)kg-1], Non exchangeable K ranged from 1.434-2.625 [cmol(p+)kg-1] and Lattice K ranged from 29.730-51.859 [cmol(p+)kg-1]. The total potassium content in these soils varied from 31.60-54.50 [cmol(p+)kg-1]. Available potassium was positively and significantly correlated with organic carbon (r=0.960)*, cation exchangeable capacity (r=0.874)* and clay (r=0.642**) and was negatively correlated with CaCo3 (r=0.740*), sand (r=-0.365*) and silt (r=-0.734*).
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