1. Agricultural Research and Rural Extension Office, Rodovia Admar Gonzaga, 1347 Bairro Itacorubi, Caixa Postal 502, Florianópolis 88034-901, SC, Brazil.
2. Experimental Center BITAL Research Center, Univ. of Almería, 04120 Almeria, Spain.
3. Professor, Pontificia Católica Univ. de Valparaiso, Escuela de Agronomía, Calle San Francisco, La Palma s/n, Casilla 4-D, Quillota, Chile.
4. Professor, Dept. of Agriculture, Univ. of Almería, 04120 Almería, Spain (corresponding author).