Thirtle et al. (2003) anticipated an implicit function between agricultural productivity and poverty reduction. Agricultural productivity contributes to higher outputs in this sector.Farmers and agricultural workers would receive higher income with the lower costs. The standard of living of the poor would be improved. It is the reason for them in trying to track the relationship into the explicit form. Being aware of location issue, they collected sample from Asia, Africa, and Americas to compare the results. From their study, they found that agricultural productivity improves the poverty situation in an overall region. Investment in R&D is very matter in progressive of the productivity in agriculture. An employment in agricultural sector would rise while the cost per unit of output fails because the improvement of agricultural productivity. However, there is some variation in detail among locations.