Sodium and chloride accumulation in leaf, woody, and root tissue of Populus after irrigation with landfill leachate.
The response of Populus to irrigation sources containing elevated levels of sodium (Na(+)) and chloride (Cl(-)) is poorly understood. We irrigated eight Populus clones with fertilized well water (control) (N, P, K) or municipal solid waste landfill leachate weekly during 2005 and 2006 in Rhinelander, Wisconsin, USA (45.6 degrees N, 89.4 degrees W). During August 2006, we tested for differences in total Na(+) and Cl(-) concentration in preplanting and harvest soils, and in leaf, woody (stems+branches), and root tissue. The leachate-irrigated soils at harvest had the greatest Na(+) and Cl(-) levels. Genotypes exhibited elevated total tree Cl(-) concentration and increased biomass (clones NC14104, NM2, NM6), elevated Cl(-) and decreased biomass (NC14018, NC14106, DM115), or mid levels of Cl(-) and biomass (NC13460, DN5). Leachate tissue concentrations were 17 (Na(+)) and four (Cl(-)) times greater than water. Sodium and Cl(-) levels were greatest in roots and leaves, respectively.
Zalesny
Jill A
JA
Iowa State University, Department of Natural Resource Ecology and Management, 339 Science II, Ames, IA 50011, USA. jzalesny@fs.fed.us
Zalesny
Ronald S
RS
Wiese
Adam H
AH
Sexton
Bart
B
Hall
Richard B
RB
D001673:Biodegradation, Environmental; D002712:Chlorides / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D032107:Populus / Q000378:metabolism*; D012964:Sodium / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014922:Wisconsin
D002712:Chlorides; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D012964:Sodium