Record Display for the EPA National Library Catalog


Main Title Minimizing Salt in Return Flow Through Irrigation Management.
CORP Author Agricultural Research Service, Riverside, CA. Salinity Lab.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Year Published 1982
Report Number PUB-744; EPA-600/2-82-073;
Stock Number PB82-257445
Additional Subjects Salinity ; Irrigation ; Management ; Leaching ; Water quality ; Citrus trees ; Leguminous plants ; Drainage ; Evapotranspiration ; Soil compacting ; Desalting ; Colorado River Basin ; Arizona ; Gila project ; Return flow
Library Call Number Additional Info Location Last
NTIS  PB82-257445 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 181p
Two field experiments were conducted in southwest Arizona to investigate the potential of reducing the salt load in irrigation return flow by decreased leaching. Three leaching treatments of 5, 10, and 20%, replicated nine times for citrus and five times for alfalfa, were established and compared with conventional flood irrigation management. Annual evapotranspiration of mature Valencia orange trees was 1470 mm. During the first four years, the leaching treatments did not influence fruit yield or quality or tree growth. During the last year, however, the yield of the 5% leaching treatment was substantially lower than the other treatments. Both experiments verified that water applications could be reduced substantially below average commercial practice without loss of crop yield.