Forms and Distribution of Potassium Fractions in different Production Systems of Kalyana Karnataka Region

Author: Laalithya, M.S., K. Narayan Rao, H. Veeresh, Rajesh, N.L. and R.V. Beladhadi

Download PDF

Abstract

A study was conducted to evaluate the forms and distribution of potassium fractions in different production systems. Sixty representative soil samples were collected from different production systems viz., Bajra-Groundnut and Pigeonpea crop under natural farming, Maize under organic farming, Paddy-Paddy under conventional and Pigeonpea under conventional farming and soils from currently uncultivated site at 0-15 cm and 15-30 cm soil depth. Results revealed that in all the production systems Water-soluble K and Exchangeable K were highest in surface soils and Non exchangeable K, Lattice K and Total K were highest in the subsurface soils. Among different production systems all potassium fraction were high in organic farming system and compare to all potassium fractions, Lattice K contributed more towards Total K and Water-soluble K contributed less in both surface and subsurface soils of all production systems.

Keywords

Production systems, Water-soluble K, Exchangeable K, Non exchangeable K, Lattice K and Total K.

Conclusion

In general, the concentration of potassium in soil followed its sequence of total K > lattice K > non-exchangeable K > exchangeable K > water soluble K irrespective of production systems. Among different production systems, organic farming system with maize cropping pattern was found to be high in all the potassium fractions and natural farming system with pigeonpea cropping pattern was found to be less in all potassium fractions. Among the various potassium fractions, plants uptake mainly the water soluble potassium fraction and the crop yield was found to be more influenced by water soluble potassium fraction which was followed by exchangeable potassium fraction.

References

-

How to cite this article

Laalithya, M.S., K. Narayan Rao, H. Veeresh, Rajesh, N.L. and R.V. Beladhadi (2022). Forms and Distribution of Potassium Fractions in different Production Systems of Kalyana Karnatka Region. Biological Forum – An International Journal, 14(4): 675-683.