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Irrigation effects of cooling tower effluent on soil chemistry and alfalfa in the Rio Grande river basin by G. K. Ganjegunte; C. L. Trostle; R. J. Braun is a Environmental Science article available to read on EtoBox.

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## Abstract Development of alternative sources through wastewater reuse is important to meet water demands in arid regions. However, effects of wastewater irrigation on soil properties and crop performance must be evaluated before advocating its widespread use. Objectives of this study were to evaluate: (i) effects of prior evaporative disposal of saline‐sodic blowdown water (BW) on soil (fine‐loamy, mixed, and thermic Typic Calciorthods) properties in the disposal area, and (ii) effects of flood irrigation with three water qualities (control, BW 1X, and BW 2X) on soil salinity and alfalfa performance using a greenhouse soil column study (soil collected from same study area as objective (i)). Results indicated that although prior land disposal of BW had increased salinity and sodicity of soil, they were within the tolerance limits of the intended crop, alfalfa. Mass balance calculations indicated measured (15·6 Mg ha^−1^) and calculated (13·2 Mg ha^−1^) salt accumulation at the test site used for evaporative disposal were similar. Alfalfa grown using BW under greenhouse conditions produced prime quality hay and biomass yield similar to the control treatment (8·3 g column^−1^ vs. 10

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Author

G. K. Ganjegunte; C. L. Trostle; R. J. Braun

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 1085-3278)

Published

2011

Language

EN

Field

Environmental Science (Physical Sciences)