1. Ph.D. Student, Dept. of Horticulture, Agronomical Sciences College, São Paulo State Univ., José Barbosa of Barros St., 1780, CEN 18.610-307 Botucatu, SP, Brazil (corresponding author).
2. Postdocoral, Dept. of Soil and Environmental Resources, Agronomical Sciences College, São Paulo State Univ., José Barbosa of Barros St., 1780, CEN 18.610-307 Botucatu, SP, Brazil.
3. Professor, Dept. of Horticulture, Agronomical Sciences College, São Paulo State Univ., José Barbosa of Barros St., 1780, CEN 18.610-307 Botucatu, SP, Brazil.