1. Agric. & Agri‐Food Can., Southern Crop Protection and Food Res. Cent. 1391 Sandford St. London ON Canada N5V 4T3
2. Agric. & Agri‐Food Can. Southern Crop Protection and Food Res. Cent. Box 186 Delhi ON Canada N4B 2W9
3. Washington State Univ. 24106 N. Burn Rd. Prosser WA 99350