Journal of Environmental Quality · 1989 · 18 citations · 0 references
AgricultureAgronomyWater Resources ManagementIrrigation ManagementSoil SalinitySoil-water RelationsCrop Salt ToleranceIrrigationIrrigation Water QualityIrrigation Water SalinityRoot-zone SalinitySalinity ManagementAgricultural DrainageAgricultural Drainage HydrologyCrop Root-zone SalinityIrrigation Water ChemistryIrrigation Water Quality EffectsLeachingMolybdenum AvailabilitySalinity Leaching Requirement
Abstract Molybdenum (Mo) in relatively high concentrations has been found in saline SO 2− 4 ‐dominated agricultural drainage waters of the West Side of the San Joaquin Valley (WSSJV) of California. Because of the potential for using these waters for irrigating salt‐tolerant crops, an assessment of quality guidelines for Mo for the specific conditions of the WSSJV was justified. The unique conditions of (i) alkaline soils favoring Mo mobility, (ii) the high leaching fractions required to control salinity in the root zone, and (iii) the effect of SO 2− 4 in reducing Mo absorption by plants suggested that the guideline of 10 µ g L −1 to protect crops and animals be increased to 50 µ g L −1 for the WSSJV. The Mo input at this concentration assuming the use of 10 000 m 3 of water ha −1 will be 0.5 kg h −1 .