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Abstract

ELECTRO-CHEMICAL BEHAVIOR AND SALINE SOIL PROPERTIES DUE TO HEAVY IRRIGATION OF CULTIVATED LANDS IN BAGALKOT DISTRICT, KARNATAKA STATE, INDIA.

Shobha N, Mallikarjun B. Kalashetti, Dr. Basavaraj M. Kalshetty*

ABSTRACT

The electro-chemical behavior, salinity assessment and deficiency of micro-nutrients in soil samples from selected locations of highly irrigated cultivated lands of Bagalkot district have been investigated on the basis of cation exchange capacity, the levels of Physico- and electro-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 (CEC) in soils of heavy irrigated lands was dependent on the amount of Organic matter. Salinity of soils dependent on salt formation due to heavy irrigation has been adopted in agricultural practices and uses of compost and synthetic inorganic fertilizers in unlimited doses. The severe accumulation of salt in soil samples was determined by Electrical Conductivity values, the present investigation reveals the soils salinity may restrict growth of many vegetations and plants and suppression of yield potentials in fruits and seeds.

Keywords: electro-chemical behavior, soil salinity, plant nutrients, heavy irrigation, cultivated lands, vegetations and plant growth.


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