Non Technical Summary
(N/A)

Classification

Knowledge Area (KA)	Subject of Investigation (SOI)	Field of Science (FOS)	Percent
103	0110	2000	20%
103	0110	2010	10%
103	0110	2050	20%
103	0210	2000	10%
103	0210	2010	10%
103	0210	2050	20%
103	1640	2070	10%

Knowledge Area
103 - Management of Saline and Sodic Soils and Salinity;

Subject Of Investigation
1640 - Alfalfa; 0210 - Water resources; 0110 - Soil;

Field Of Science
2070 - Meteorology and climatology; 2010 - Physics; 2050 - Hydrology; 2000 - Chemistry;

Goals / Objectives
Demonstrate methods of drainage water volume reduction within a water district while maintaining sustainable crop production and active management of the subsurface drainage system using modifications that are suitable for previously installed subsurface drainage systems in arid and semi-arid areas.

Project Methods
Determine the salt movement in the rootzone of safflower and salt tolerant alfalfa (SW9720) and the salt accumulation in the rootzone over the length of the project. Determine the water quality changes of the shallow groundwater. Determine the forage quality of salt tolerant alfalfa (SW9720) for each irrigation treatment. Develop modifications to subsurface drainage systems that can be used to regulate flow and water table position on existing subsurface drainage systems. Characterize water table response and drainage discharge with respect to field modifications of drainage systems. Documents Trust with CA Dept. of Water Resources. Logs 20023 & 20156. Formerly 5302-13000-008-05T (6/02).