Download e-book for kindle: Agricultural Salinity Assessment and Management by Edited by Wesley W. Wallender, Kenneth K. Tanji, Sc.D.

By Edited by Wesley W. Wallender, Kenneth K. Tanji, Sc.D.

ISBN-10: 0784411697

ISBN-13: 9780784411698

ISBN-10: 0784476489

ISBN-13: 9780784476482

Agricultural Salinity evaluation and administration, moment variation, considers around the globe salinity and hint point administration in irrigated agriculture and water provides. This up to date variation offers a connection with aid maintain irrigated agriculture and integrates modern innovations and administration practices. It covers technical and medical points of agricultural salinity mangement, in addition to environmental, monetary, and criminal issues. issues contain: nature and volume of agricultural salinity; analysis of salinity difficulties and choice of keep watch over practices; soil reaction to saline and sodic stipulations; plant responses to saline and sodic stipulations; long term regional-scale modeling of soil salinity; case examine of San Joaquin Valley, California; institutional and salinity matters at the higher Rio Grande; and viability of irrigated agriculture with increasing house and time. the second one variation of MOP seventy one is efficacious to water execs, engineers, scientists, practitioners, and educators attracted to constructing and dealing with ever extra limited water provides around the globe

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In semiarid to arid climates, irrigated agriculture requires leaching and drainage. In the past, it has often been assumed that residuals from agriculture, especially saline drainage waters, would be disposed of somewhere, somehow. Now other water users have demanded that agriculture minimize the degradation of water quality. Federal, state, and local regulations on nonpoint sources of pollutants are being promulgated. There are a number of management strategies available to address these regulations, although over the long term some means of disposing of accumulated salts in an ultimate sink will need to be found.

Evaporation ponds are an alternative to RD, but high levels of selenium in the collected subsurface waters may pose a hazard to waterbirds and require expensive mitigation measures. If selenium could be removed by DWT to low levels prior to disposal in EPs, mitigation measures will be reduced. EPs and salt utilization (SU) are a natural follow-up to sequential DR. If EPs are feasible, they will reduce the need for not only RD but also LR, DWT and GM. Groundwater management may alleviate waterlogging provided the pumped groundwater is usable.

It gives examples of solid phases for each class and the solute species that form or dissolve from these minerals. The precipitation of minerals and the dissolution of minerals are essentially engaged in a tug-of-war that depends on the relative rates of evapoconcentration versus dilution. Hypersaline waters typically would have solute abundances in the order of Na Ն Mg Ͼ Ca and Cl Ն SO4 Ͼ HCO 3. Fresh waters would typically have nearly the reverse order of Ca Ն Mg Ͼ Na and HCO3 Ͼ Cl Ն SO4. Soil-Water Systems Figures 1-4, 1-5, and 1-6 indicate that mineral solubility principally controls water chemistry and salinity in systems, such as streams and lakes.

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Agricultural Salinity Assessment and Management by Edited by Wesley W. Wallender, Kenneth K. Tanji, Sc.D.


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