1. Center of Agricultural Sciences and Technologies State Univ. of Northern Fluminense Darcy Ribeiro Campos dos Goytacazes Rio de Janeiro Brazil
2. Dep. of Agricultural Engineering Federal Univ. of Ceará Fortaleza Ceará Brazil
3. Dep. of Agricultural Engineering Federal Univ. of Sergipe São Cristovão Sergipe Brazil
4. Dep. of Agricultural Engineering Federal Univ. of Viçosa Viçosa Minas Gerais Brazil
5. Dep. of Agricultural Sciences Federal Univ. of Goiás Jataí Goiás Brazil
6. Dep. of Phytotechnology and Plant Protection Federal Univ. of Paraná Curitiba Paraná Brazil
7. Dep. of Agronomy Federal Univ. of Sergipe São Cristovão Sergipe Brazil
8. Suny Cobleskill Cobleskill NY 12043