1. Field Crops Laboratory, University of Carthage, INRAT, 2080 Ariana, Tunisia
2. Field Crops Laboratory, University of Carthage, INRAT, 2080 Ariana, Tunisia; and National Agronomic Institute of Tunisia, 1082 Tunis, Tunisia
3. Plant Protection Laboratory, University of Carthage, INRAT, 2080 Ariana, Tunisia
4. Field Crops Laboratory, University of Carthage, INRAT, 2080 Ariana, Tunisia; and University of Tunis El Manar, Faculty of Sciences of Tunis, Campus University, El Manar, Tunis, Tunisia
5. USDA-ARS, Washington State University, Pullman, 99164.