Marinari Sara, Calfapietra Carlo, De Angelis Paolo, Mugnozza Giuseppe Scarascia, Grego Stefano
Department of Agrochemistry and Agrobiology, Università degli Studi della Tuscia, Via S Camillo de Lellis, Viterbo, Italy.
Environ Pollut. 2007 Jun;147(3):507-15. doi: 10.1016/j.envpol.2006.08.041. Epub 2006 Nov 2.
The experiment was carried out on a short rotation coppice culture of poplars (POP-EUROFACE, Central Italy), growing in a free air carbon dioxide enriched atmosphere (FACE). The specific objective of this work was to study whether elevated CO(2) and fertilization (two CO(2) treatments, elevated CO(2) and control, two N fertilization treatments, fertilized and unfertilized), as well as the interaction between treatments caused an unbalanced nutritional status of leaves in three poplar species (P. x euramericana, P. nigra and P. alba). Finally, we discuss the ecological implications of a possible change in foliar nutrients concentration. CO(2) enrichment reduced foliar nitrogen and increased the concentration of magnesium; whereas nitrogen fertilization had opposite effects on leaf nitrogen and magnesium concentrations. Moreover, the interaction between elevated CO(2) and N fertilization amplified some element unbalances such as the K/N-ratio.
