[1] USDA ARS, New England Plant Soil & Water Lab, Orono, ME 04469 USA
[2] Cornell Univ, Ithaca, NY 14853 USA
[3] Kawanda Agr Res Inst, Kampala, Uganda
[4] USAID REDSO, Nairobi, Kenya
[5] Agr Res Ctr, Giza, Egypt
[6] Lias Off, Int Potato Ctr, SSA, Kampala, Uganda
[7] NARO, Kachwekano Zonal Agr Res & Dev Inst, Kabale, Uganda
[8] Africare Kabale, Kabale, Uganda