Abstract:
An incubation experiment was conducted under laboratory conditions to study the
transformation of applied potassium fertilizer in five rice soils differing in textural composition for
a period of three months. At the end of the incubation period, there was a remarkable increase in
all the three fractions of potassium viz., water soluble, ammonium acetate extractable and nitric
acid soluble forms for all the soils although slight fluctuations were noticed throughout the
incubation period. The relationship of the different forms of potassium and the relative proportion
of each in the soil varied with the clay content and mineralogical composition.
