Model Optimasi Pola Tanam untuk Meningkatkan Keuntungan Hasil Pertanian dengan Program Linier (Studi Kasus Daerah Irigasi Rambut Kabupaten Tegal Provinsi Jawa Tengah)

Abstract

The 7634 Ha of Rambut irrigation scheme is technical irrigation network located in Tegal District. The cropping pattern applied to the regulation of Tegal regency in 2014/2015 was rice plant/ sugar cane-rice plant/ crops/sugar cane-sugar cane which beginning in November I, but due to water shortage, it wasn’t applied in 2014/2015. Therefore, optimization of existing available water including suppletion derived from Cacaban Rambut suppletion channels is needed to prepare appropriate cropping patterns and to increase benefit of agriculture outcome to the maximum. Optimization was done by using linear programming through mathematical model solved by simplex method. Cropping pattern optimization consists of three scenarios, which are: (1) the sugar cane area 1500 Ha, (2) the sugar cane area 888 Ha and (3) without limitation of sugar cane area. Every scenario is simulated by four cropping patterns alternative by changing planting schedules existing from November I, November II, December I and December II. Based on the results, the highest profits for each scenario is the alternative 1, start planting on November I. The cropping pattern obtained from optimization is rice plant/crops/sugar cane - crops/sugar cane - crops/sugar cane for scenario I and II, while for scenario III is rice plant/crops- crops - crops.

Keywords

• Optimization
• Irrigation
• Cropping pattern