Farmers’ valuation of transgenic biofortified sorghum for nutritional improvement in Burkina Faso: A latent class approach

•Dominance of sorghum in diets adds to micronutrient malnutrition in Burkina Faso.•Biofortified sorghum could be a veritable instrument for nutritional improvement.•Farmers are willing to pay higher seed prices for the biofortified sorghum.•Experience with Bt cotton cultivation increases adoption of biofortified sorghum.