On-farm water management in saline groundwater area under scarce canal water supply condition in the Northwest India

The study investigates the possibility of enhancing crop water productivity in the parts of Northwest India where groundwater quality is marginal and canal water supply is severely scarce. Soil, Water, Atmosphere and Plant (SWAP) model was calibrated and validated in three farmers' fields with varying canal water availability and groundwater quality in the Kaithal Irrigation Circle of the Bhakra Canal system, Haryana. On the basis of predicted and observed soil water content, pressure heads, salt concentration at 2 week intervals and crop yields, the model was found suitable for use in the region. A few nomographs were prepared to provide a graphical method to predict the effect of different combinations of water quality and depth of water application on crop yield and soil salinity and to help develop some guidelines to the farming community. Water management alternatives at the field level were suggested to increase the yield and to maintain soil salinity below threshold level. The application of frequent irrigation in precisely leveled field would help in achieving 10% higher yield even when saline groundwater of 11 dS/m is used for irrigation.

[1]  J.J.T.I. Boesten,et al.  Simple model for daily evaporation from fallow tilled soil under spring conditions in a temperate climate. , 1986 .

[2]  I. Abrol,et al.  Salt leaching and the effect of gypsum application in a saline-sodic soil , 1979 .

[3]  I. Abrol,et al.  Sustaining rice–wheat system productivity in the Indo-Gangetic plains: water management-related issues , 1999 .

[4]  C. Priestley,et al.  On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters , 1972 .

[5]  J. Doorenbos,et al.  Yield response to water , 1979 .

[6]  K. Singh,et al.  Conjunctive use of saline and non-saline irrigation waters in semi-arid regions , 1994, Irrigation Science.

[7]  R. Sakthivadivel,et al.  Water management decisions on small farms under scarce canal water supply: A case study from NW India , 2005 .

[8]  S. Ambast,et al.  Management of declining groundwater in the Trans Indo-Gangetic Plain (India): Some options , 2006 .

[9]  Reinder A. Feddes,et al.  Simulation model of the water balance of a cropped soil: SWATRE , 1983 .

[10]  Wim G.M. Bastiaanssen,et al.  Distributed agro-hydrological modeling of an irrigation system in western Turkey , 2000 .

[11]  A. Sarwar.  A transient model approach to improve on-farm irrigation and drainage in semi-arid zones. , 2000 .

[12]  A. Walkley,et al.  AN EXAMINATION OF THE DEGTJAREFF METHOD FOR DETERMINING SOIL ORGANIC MATTER, AND A PROPOSED MODIFICATION OF THE CHROMIC ACID TITRATION METHOD , 1934 .

[13]  Peter Droogers,et al.  Comparing evapotranspiration estimates from satellites, hydrological models and field data , 2000 .

[14]  Comparing estimates of actual evapotranspiration from satellites, hydrological models, and field data : a case study from Western Turkey , 2000 .

[15]  Peter Droogers,et al.  Crop growth and soil water balance modeling to explore water management options , 2001 .

[16]  Reinder A. Feddes,et al.  SWACROP: A water management and crop production simulation model. , 1992 .

[17]  D. Sharma,et al.  Strategy for long term use of saline drainage water for irrigation in semi-arid regions , 1998 .

[18]  R. Naresh,et al.  Conjunctive use of saline and non-saline waters. II. Field comparisions of cyclic uses and mixing for wheat , 1993 .

[19]  I. Masih,et al.  Strategies for the management of conjunctive use of surface water and groundwater resources in semi-arid areas: a case study from Pakistan. , 2004 .

[20]  Peter Droogers,et al.  Inverse modelling in estimating soil hydraulic functions: a Genetic Algorithm approach , 2002 .

[21]  Joop G Kroes,et al.  User's guide of SWAP version 2.0 : Simulation of water flow, solute transport and plant growth in the Soil-Water-Atmosphere-Plant environment , 1997 .