The paper reviews the literature on the characteristics and impact of opinion leaders on the diffusion of new knowledge, concluding that there is no clear evidence on whether opinion leaders are more effective if they are similar in socioeconomic attributes to the other farmers rather than...

The paper reviews the origins and evolution of the Training and Visit (T&V) extension system, which was promoted by the World Bank in 1975-98 in over 50 developing countries. The discussion seeks to clarify the context within which the approach was implemented, and to analyze the causes for its...

The authors review the role of land policies in the evolving farm structure of transition countries in Central and Eastern Europe (CEE) and the Commonwealth of Independent States (CIS). They show how different policies for land property rights, degrees of control of land rental and sale markets,...

The authors evaluate the impact of farmer field schools, an intensive participatory training program emphasizing integrated pest management. Their evaluation focuses on whether participation in the program has improved yields and reduced pesticide use among graduates and their neighbors who may...

The authors analyze the considerations that lead policymakers to undertake extension investments as a key public responsibility, as well as the complex set of factors and intra-agency incentives that explain why different extension systems' performance vary. The authors provide a conceptual...

Groundwater is a vital yet threatened resource in much of South Asia. This paper develops a model of groundwater transactions under payoff uncertainty arising from unpredictable fluctuations in groundwater availability during the agricultural dry season. The model highlights the trade-off...

This paper documents the changing structure of wages in India over the post-reform era, the roughly two-decade period since 1993. To investigate the factors underlying these changes, a supply-demand framework is applied at the level of the Indian state. While real wages have risen across India...

The effect of weather shocks on children's anthropometrics is investigated using the two most recent rounds of the Nigeria Demographic and Health Survey. For this purpose, climate data for each survey cluster are interpolated using daily weather-station records from the national network. The...

Do household consumption-smoothing strategies in poor countries entail significant long-run costs in terms of reduced human capital? This paper exploits the timing of monsoon rainfall shocks and the seasonal nature of agriculture to isolate income effects on early childhood anthropometric...

This paper considers the welfare and distributional consequences of higher relative food prices in rural India through the lens of a specific-factors, general equilibrium, trade model applied at the district level. The evidence shows that nominal wages for manual labor both within and outside...