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Impact of irrigation on soil characteristics in saline Vertisols of Bara tract under Sardar Sarovar Canal Command of Gujarat

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Title Impact of irrigation on soil characteristics in saline Vertisols of Bara tract under Sardar Sarovar Canal Command of Gujarat
Not Available
 
Creator Anil R. Chinchmalatpure
Shrvan Kumar
G. Gururaja Rao
Vinayak Nikam
Indivar Prasad
David Camus
D.K. Sharma
 
Subject Canal irrigation
salinisation
sodification
Vertisol
pedogenic processes
 
Description Not Available
Detailed characterisation of soil profiles occurring at village Vagra of Bharuch district in Gujarat under
pre-and post-canal irrigation situation was carried out to study the effect of irrigation. Salt accumulation
was observed in surface layer when saline tube well water was used for irrigation to cotton crop on saline
Vertisols. The development of secondary salinisation was observed in the soil profiles irrigated with saline
ground water. The same soils when irrigated with fresh canal water for wheat cultivation, showed reduction
in soil salinity. The electrical conductivity of saturation extract (ECe) reduced to 0.65 dS m-1 from 9.8 dS
m-1 in the surface layer, depicting desalinisation. It was also noticed in canal irrigated soils that exchangeable
sodium percentage (ESP) increased to 17.2 from 7.8 in the lower horizon which indicated the initiation of
pedogenic process i.e. sodification. Based on the 65 observations, it is noted that changes in the pedogenic
processes operate insidiously and the farmers become aware of the problem after considerable damage has
been done. It is also observed that bulk density of soils under canal irrigation is higher (1.8 Mg m-3) than
those of soils under tube well irrigation/rainfed condition (1.3 Mg m-3) whereas hydraulic conductivity is
drastically reduced in soils under canal irrigation. Therefore, a suitable management like conjunctive use of
saline water with canal water, cultivation of low water requiring crops, use of pressurised irrigation system
are required to be suggested in such a situation to avoid further degradation of soil characteristics
Not Available
 
Date 2019-10-18T06:32:05Z
2019-10-18T06:32:05Z
2018
 
Type Journal
 
Identifier Anil R. Chinchmalatpure, Shrvan Kumar, G. Gururaja Rao, Vinayak Nikam, Indivar Prasad, David Camus and D.K. Sharma (2018) Impact of irrigation on soil characteristics in saline Vertisols of Bara tract under Sardar Sarovar Canal Command of Gujarat. Journal of the Indian Society of Soil Science 66 (4),381-385.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/23542
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Soil Science New Delhi