Design of The Sustainable Patnership Pattern between Sugar Cane Farmers and Sugar Factories Using the Response Surface Methodology and Soft System Methodology
Marlufi Sulindra (a*), Sri Gunani Partiwi (b), Erwin Widodo (c)

Sepuluh Nopember Institute of Technology Surabaya (ITS)

Abstract

East Java is a province that has the largest area of sugarcane land compared to other provinces, but the productivity of sugarcane always decreases every year, resulting in a decrease in the amount of raw material for sugarcane milled by sugar factories. In addition, as many as 28 sugar mills are operating in the East Java without being accompanied by increasing area of cane cultivation, making competition for the supply of cane increasingly stringent. The system of direct purchasing has been implemented by sugar factories. The risk of sugarcane quality and the performance efficiency of the sugar factory which is shown as an overall recovery (OR) value. Therefore, an analysis is needed to examine the variables that affect the performance of sugar factories so that the partnerships formed with farmers can be sustainable in the future and the sugar factories get proper quality according to the purchase price of sugarcane. The novelty of this research is getting the partnership model that not only provides incentives to farmers, but also the performance of sugar factories to process the raw materials supplied by farmers. Researchers have analyzed the performance of sugar mills by combining the soft system methodology (SSM) and response surface methodology (RSM) with the result that the performance of sugar factories is influenced by the value of sugarcane pol, brix and yield. Optimal performance sugar factories are obtained at pol values of 12% - 14%, brix at least 16%, sugarcane yield of 8.0 - 8.5%.

Keywords: Response Surface Methodology- Soft System Methodology- Sustainable Partneship

Topic: Development Studies and Humanities