Walker, Thomas Person

selected publications

• article

  • Crop improvement, adoption, and impact of improved varieties in food crops in sub-Saharan Africa 2015
  • Changing milk production trends in Peru: Small-scale highland farming versus coastal agrobusiness.  Mountain Research and Development.  21:268-275. 2001
  • Estimating the global severity of potato late blight with GIS‐linked disease forecast models.  Plant Pathology.  49:697-705. 2000
  • World trends and patterns in the potato crop: An economic and geographic survey.  Potato Research.  42:241-264. 1999
  • Evaluating biological productivity in intercropping systems with production possibility curves.  Agricultural Systems.  36:137-157. 1991

• document

  • The village impact of machine threshing and implications for technology development in the semi?arid tropics of peninsular India 1985

• working paper

  • Measuring the effectiveness of agricultural R&D in Sub-Saharan Africa from the perspectives of varietal output and adoption, initial results from the diffusion of improved varieties in Africa project 2011