Abstract

SOIL SALINITY ASSESSMENT AND DEFICIENCY OF MICRONUTRIENTS IN SOILS AND SEDIMENTS IN THE REGION OF BIJAPUR AND BELAGAVI DISTRICTS OF KARNATAKA STATE

Dr. B. M. Kalshetty*, S. R. Magadum, M. S. Yadawe and M. B. Kalashetti

Abstract

The salinity assessment and deficiency of micro-nutrients in soil and sediment samples from selected locations of highly irrigated cultivated lands of Belagavi and Bijapur districts have been investigated of the basis of cation exchange capacity, the levels of Physico-chemical parameters such as Bulk density, soil texture, and water holding capacity, pH, EC, Sodium and Calcium carbonate. The major nutrients such as OC, available Nitrogen, available Phosphorous and available Potash and the Micro-nutrients such as Iron, Manganese, Zinc, Copper, Boron and Molybdenum were determined by using flame photometer, visible spectrophotometer and Atomic Absorption spectrophotometer followed by so far reported standard methods respectively. The secondary nutrients such as Calcium (%), Magnesium (%) and Sulphate (ppm) were determined by simple titration methods. The cation exchange capacity in soils and sediments were dependent on the amount of Organic matter. Salinity of soils and sediments dependent on heavy irrigation methods adopted in agricultural practices and uses of compost and inorganic fertilizers in unlimited doses. The severe accumulation of salt in soil and sediment samples was determined by EC- values, the soils and sediments salinity may restrict growth of many vegetations and plants.

Keywords: Salinity, micro-nutrients, soils and sediments, vegetations and plant growth.