Spatially-explicit effects of seed and fertilizer intensification for maize in Tanzania

Our simulation study examined the productivity and economiceffects of planting different seed cultivars and increasing fertilizer application rates at multiple spatial scales formaize in Tanzania. We combined crop simulation modelling with household data on costs and prices to examinefield-scale and market-scale profitability. To scale out our analysis from the field scale to the regional andnational scale (market scale) we applied an economic surplus model.