1. Dep. of Entomology and Plant Pathology North Carolina State Univ. Box 7616 Raleigh NC 27695 USA
2. Tidewater Agricultural Research and Extension Center Virginia Polytechnic and State Univ. 6321 Holland Road Suffolk VA 23437 USA
3. Dep. of Crop and Soil Sciences North Carolina State Univ. Box 7620 Raleigh NC 27695 USA