In the U.S., tomatoes are only exceeded by potatoes in economic importance. Among fresh vegetable products, annual per capita consumption of fresh tomatoes is only exceeded by lettuce and potatoes. Consumption of fresh tomatoes has remained fairly constant at around 12.8 pounds for the past 10 years as compared to the consumption of processed tomatoes in the form of ketchup and sauces which has...

Sorghum grows well in arid and semi-arid agroecological zones and is thus one of the most important cereals in the Sahel region of Sub-Saharan Africa (SSA).3 Sudan, Burkina Faso, Mali, Nigeria, and Niger lead sorghum production per capita in SSA. Per capita consumption is dominated by Sudan, Burkina Faso, Mali, and Chad. Ethiopia is also a major producer and consumer of sorghum.4 FAO data from ...

This paper develops a multi regional growth model of the second generation type with horizontal and vertical innovations. Technology goods are tradable between regions, creating a regional analogy of the weak scale effect introduced by Jones (2004). Per capita production in one region is a function of the weighted population sizes of trading partner regions. Thus the scale of partner regions di...