The soil used for this study was taken from a long-term field
experiment located at the Agronomic Experimental Station of the
Federal University of Rio Grande do Sul (UFRGS), in Eldorado do Sul
e RS, Brazil, with geographic coordinates 305005200S and
513800800W. The regional climate is classified as humid subtropical
(K€oppen climate classification Cfa), with local annual mean temperature
of 19.4 C and rainfall of 1440 mm.