Journal of FARM SCIENCES, Vol 29, No 1 (2016)

Font Size:  Small  Medium  Large

Effect of long-term irrigation on physico-chemical properties of vertisols under Ghataprabha command area

Veerabhadrappa ., S.S. Gundlur

Abstract


A field survey work was conducted in the Ghataprabha command area to study the effect of different periods of irrigation on soil properties. Five profile soil samples were collected from field irrigated for (10-15, 15-20, 20-30 and >30 years) and from adjacent one unirrigated profile samples were collected. Results  revealed that increase in values of pH, EC, CEC, ESP, SAR in field irrigated for different years and highest were  recorded in field irrigated more than 30 years. The distribution of salts increased with increase in soil depth. This might be due to increased salinization as result of irrigation and due to arid climate. The bulk density increased whereas waterstable aggregates, hydraulic conductivity, maximum water holding capacity decreased in long-term irrigated field as compared to unirrigated land, this might be due to increased ESP values and sodification of clay complex in irrigated areas caused destruction of soil structure.


Full Text: PDF