1. Agricultural Research Center, University Campus, State University of Londrina, Celso Garcia Cid Rd., Km 380, Londrina 86057-970, PR, Brazil
2. U.S. Horticultural Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, 2001 S. Rock Rd., Fort Pierce, FL 34945, USA
3. Department of Crop Protection, Rural Development Institute of Parana, IAPAR-Emater, Celso Garcia Cid Rd., Km 375, Londrina 86047-902, PR, Brazil
4. Department of Horticulture, University of Georgia, Athens, GA 30602, USA