This paper discusses a range of approaches and benchmarks that can guide future design of value chain impact evaluations. Twenty studies were reviewed to understand the status and direction of value chain impact evaluations. A majority of the studies focus on evaluating the impact of only a few interventions, at several levels within the value chains. Few impact evaluations are based on well-constructed, well-conceived comparison groups. Most of them rely on use of propensity score matching to construct counterfactual groups and estimate treatment effects.
Land tenure security is crucial for women's empowerment and a prerequisite for building secure and resilient communities. Tenure is affected by many and often contradictory sets of rules, laws, customs, traditions, and perceptions. For most rural women, land tenure is complicated, with access and ownership often layered with barriers present in their daily realities: discriminatory social dynamics and strata, unresponsive legal systems, lack of economic opportunities, and lack of voice in decision making.
The following contents were included in this newsletter (April–June 2014): the International Institute of Tropical Agriculture (IITA) held a two-day workshop on Engagement of Youth Entrepreneurship for Agricultural Transformation in Africa, from 28-30 May at IITA, Ibadan, Nigeria; cassava processing factory was established at the IITA Kalambo station in DR. Congo; project coordinator visits sites to evaluate project activities in Tanzania; stories on cassava, rice, wheat and maize were detailed.
In Sub-Sahara Africa, adoption rates of improved crop varieties remain relatively low, which is partly due to farmers’ limited access to information. In smallholder settings, information often spreads through informal networks. Better understanding of such networks could potentially help to spur innovation and farmers’ exposure to new technologies. This study uses survey data from Tanzania to analyze social networks and their role for the spread of information about improved varieties of maize and sorghum.