Mathematical Programming Modeling of the Management of Mechanized Sugarcane Farming in Tanegashima

Abstract

Along with the introduction of new sugarcane cultivars with superior ratooning ability, mechanization advancements since 2000 have reduced labor on Tanegashima, leading to the emergence of large-scale operations. To evaluate the management of these operations, we developed a mathematical programming model based on mechanized sugarcane farming. The model is characterized by its annually based process design and the consideration of increased ratoon crop cycles. Analysis of the model revealed that the use of high-yield cultivars contributes to income improvement. In addition, we found that, for the introduction of billet planters, which enable labor-saving planting, a farm needs to be ≥30 ha, the operation must have a sufficient labor force, and there should be substantial benefits in avoiding competition with spring operations.