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University of Horticultural Sciences, Bagalkot (2014)

CHARACTERIZATION OF SOIL AND GROUNDWATER FOR SALINITY IN BLACK SOIL REGIONS OF MUDHOL TALUKA

KUMAR S., KIRAN

Titre : CHARACTERIZATION OF SOIL AND GROUNDWATER FOR SALINITY IN BLACK SOIL REGIONS OF MUDHOL TALUKA

Auteur : KUMAR S., KIRAN

Université de soutenance : University of Horticultural Sciences, Bagalkot

Grade : Master of Science (MS) 2014

Résumé partiel
A soil survey was conducted to characterize soils irrigated with different water sources for their salinity aspects in black soils of Mudhol taluka of Bagalkot district. The quality of canal, stream and groundwater used for irrigations were also studied. The pH of soils ranged from slightly alkaline to high alkalinity and there were no significant differences among soils studied. However, ECe and their respective cations and anions differed significantly among soils after irrigations with different sources. In general, the concentration of ions were observed in the order of lift = lift + borewell > borewell = canal + borewell > dryland soils. Among different cropping systems, their contents were found in the order of sugarcane > ground nut/maize > cereal-pulse systems. The cations in soil- water extract were found in the order of Na+ > Ca2+ > Mg2+ > K+ while, the anions were in the order of Cl- > HCO3 - > SO4 2- > CO3 2-. Though, the ECe and cations/anions values in soil- water extracts increased significantly with irrigations the risk of alkalisation was observed in only few samples (spread over less areas).

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