1. Agronomy Department, University of Florida, Gainesville, FL 32611, USA
2. Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
3. School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32611, USA
4. EMBRAPA Café/Department of Statistics, Federal University of Viçosa, Avenida PH Rolfs S/N, Viçosa 36570-000, Brazil
5. Bayer Crop Science, Estrada da Invernadinha, 2000, Coxilha-RS 99145-000, Brazil
6. VSN International Ltd, Hemel Hempstead HP2 4TP, UK