Group 3 - Activities

=1. Characterisation of the cocoyam diversity=

A survey cocoyam production areas will be conducted in each iof the participating countries. Data will be collected by observation and using a questionnaire administered to farmers. The following information will be collected:


 * Phenotypic characteristics of the sampled germplasm,
 * IK on production practices,
 * Varietal diversity on farm,


 * Yield potential of different varieties
 * Occurrence of pests and diseases,
 * Maturity period,


 * Tuber yield.

=2. Agronomic performance and diseases and pest trials on-station=

From on-station trials, the following data will be collected:


 * Reaction to pests and diseases.
 * Performance under varying plant densities.
 * Performance under differenr planting methods (mounds vs. flat).
 * Nutritional content of the diffrent yam materials
 * Optimum soil nutient requirements.