Subject: Posters
147. Mechanized direct planting system for sweetpotato
H. Hosokawa, H. Fukazawa and T. Watanabe
150. Chemical and hot-water treatments to improve the survival of yam minisetts
L. Kenyon, A. Nwankitiand, E. Ekefan and J. Peters
152. The rapid detection of Colletotrichum gloeosporioides in yam tubers using ELISA
J. C. Peters, M James and L. Kenyon
154. Leaf harvesting effects on leaf retention and pest and disease incidence of cassava (Manihot esculenta Crantz)
M. T. Lahai, I. J. Ekanayake and J. B. George
160. Growth and flowering behaviour of four cassava genotypes in two soil types and locations in southern Nigeria
M. S. C. Simwanbana, I. J. Ekanayaka and T. U. Ferguson