This is the second blog in a series illustrating stories of how J-PAL’s training courses have built new policy and research partnerships and strengthened existing ones to advance evidence-informed decision-making.

A key policy question in sub-Saharan Africa is how to reach yield potential for important crops without introducing further environmental degradation. Researchers partnered with Niger’s Ministry of the Environment and the Sahel Consulting Group to test barriers to the adoption of demi-lunes, a...