Practical salinity management for leachate irrigation to poplar trees

International Journal of Phytoremediation
Jason K SmesrudMark F Madison

Abstract

Landfill leachate can be beneficially reused for irrigation of fiber crops with appropriate attention to nutrient and salinity management. The Riverbend Landfill in Western Oregon has been effectively practicing irrigation of landfill leachate to poplar trees since 1993. Over that time, the site has been adaptively managed to control salinity impacts to the tree crop while beneficially utilizing the applied water and nutrients during each growing season. Representative leachate irrigation water has ranged in concentration of total dissolved solids from 777 to 6,940 mg/L, chloride from 180 to 1,760 mg/L and boron from 3.2 to 7.3 mg/L. Annual leachate irrigation applications have also ranged between 102 and 812 mm/yr. Important conclusions from this site have included: 1) Appropriate tree clone selection and tree stand spacing, thinning, and harvest rotations are critical to maintaining a productive tree stand that is resilient and resistant to salt stress. The most effective combinations have included clones DN-34, OP-367, 184-411, 49-177, and 15-29 planted at spacing of 3.7-m x 1.8-m to 3.7-m x 3.7-m; 2) Leaf tissue boron levels are closely correlated to soil boron levels and can be managed with leaching. When leaf tissue boron...Continue Reading

References

Mar 27, 2007·Environmental Pollution·B H RobinsonB E Clothier
Feb 6, 2008·International Journal of Phytoremediation·Ronald S Zalesny, Edmund O Bauer
Feb 6, 2008·International Journal of Phytoremediation·Ronald S Zalesny, Edmund O Bauer
Aug 12, 2008·Journal of Environmental Quality·Neil W MacdonaldDavid Wierzbicki
Nov 1, 1995·Photosynthesis Research·T H Jukes

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Citations

Apr 17, 2014·Environmental Science and Pollution Research International·G Del MoroG Brunetti
Apr 10, 2015·Environmental Science and Pollution Research International·João M JesusMaria-Teresa Borges
Oct 19, 2020·Journal of Environmental Management·Werther Guidi NissimElisa Azzarello

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