...Mamadou Sissoko; Veronique Theriault; Melinda Smale Purpose The authors assess the development potential of cowpea beyond grain in local markets in Mali by: (1) identifying trader types and types of cowpea products sold; (2) examining trader roles; (3) estimating gross margins...

... seed technology Farmer saved seed Farmers welfare Farm output Farm revenue Return on investment Gross margins (7) y j = x j β + δ t j + ∈ j To obtain empirical estimates of the impact of adoption on farm profitability and farmers' welfare, an endogenous...

..., and analysis of costs and margins. The first three of these are qualitative with information collected from key informants, while the last one is quantitative. Gross margins for each farmer are obtained by subtracting the total production costs (TPC_{i) of each farmer from his total crop}...