In much of sub-Saharan Africa, soil quality heterogeneity hampers farmer learning about the
returns to different inputs. This may help explain why relatively few farmers in the region use …

Lack of accurate information about soil nutrient deficiencies coupled with limited access to
appropriate fertilizers could lead to mismatch between soil nutrient deficiencies …

Maize (Zea mays L.) is an important food security crop in Ethiopia. However, low soil fertility
and the use of haphazard nitrogen (N) fertilizer with little attention to the rate and timing of N …

Soil degradation, a serious environmental problem in many developing countries, often
necessitates the use of fertilizers to improve crop yields. However, smallholders usually do …

We explore heterogeneity in soil quality, lack of knowledge and autonomy as explanations
for the low adoption of improved agricultural practices using a randomized field experiment …

The Sri Lankan government's 2021 policy to ban mineral fertilizer imports and shift to green
agriculture provides an opportunity to examine the potential for nutrient recycling in a more …

Evidence-based practices in agricultural extension programs must be guided by precise
evaluation strategies and reliable data. Methods like randomized controlled trials (RCTs) are …

Increased interest in holistic soil management is driving a demand for analytical approaches
to assessing soil health that integrate biological and physical assessment of soils with …

This dissertation studies two important fields of development economics in China, including
agriculture (chapters 1 and 3) and education (chapter 2). Guided by theories in learning and …

Identifying and implementing strategies for recovering resources from waste streams for
reuse helps to minimize natural resource extraction and reduces waste generation. Spatial …