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OPTIMALISATION OF UPJA INCOME USING PROGRAMMING LINEAR IN CENTRAL LAMPUNG
Sandi Asmara1, Winda Rahmawati2, Siti Suharyatun3, Sasongko Aji Wibowo4

1,2,3 Lecturers of Agricultural Engineering Department, Faculty of Agriculture, University of Lampung
4 Alumni of Agricultural Engineering Department, Faculty of Agriculture, University of Lampung


Abstract

GapoktanRejo Asri Lamteng is a Gapoktan which has an Alsintan Service Provider Business (UPJA) for Rice production. This UPJA has several tools and machines which are cultivated in rice production, including: tractors, hand tractors, transplanters, hand sprayers and power weeder as well as combine harvester. Tool management, especially in maximizing revenue gains from the management of tools and machines is a problem that is faced, because of the benefits. new break even stage between business income and expenditure. Constraints on the extent of claim for each tool, equipment rental time, tool working hours, number of operators, operational costs, and rejuvenation costs for each tool still cannot be harmonized, so that it has not been able to achieve maximum profit. Therefore the application of the Simplex Method from the Linear Programing program which aims to maximize the benefits of UPJA is the background of this research. The research method used is a quantitative method using Linear Programing analysis method using QM-For Windows V helper software. 5. The results showed that Linear Function for the Zmax objective function = 4.305.000X1 + 3.255.000X2 + 3.258.500X3 + 16,800,000X4, where X1, X2, X3, and X4 are Tractors, Tractor Hand, Transplanters, and Combine Harvester respectively. And the equation of the constraint function P1 (Land Area) = 60X1 + 120X2 + 56X3 + 120X4 <= 9408, P2 (Rental Time) = 240X1 + 240X2 + 240X3 + 240X4 <= 1448, P3 (Tool Hours) = 56X1 + 120X2 + 56X3 + 120X4 <= 1448, P4 (Number of Operators) = X1 + 2X2 + 3X3 + 4X4 <= 10, P5 (Operating Costs) = 290000X1 + 290000X2 + 835000X3 + 800000X4 <= 38545000, P6 (Equipment Rejuvenation Costs) = 123000X1 + 93000X2 + 199500X3 + 240000X4 <= 11836500. Conclusion, after optimization, solutions of solutions X1, X2, X3, and X4 are 4.71, 0, 0, and 1.32, the total overall profit obtained by the Gapoktan Rejo Asri from the UPJA is Rp. 42,494,670. , for one planting season (MT) and for the Cropping Index in Seputih Raman Subdistrict, 2 is made in one year is Rp. 84,989,340, assuming profitability is in accordance with the objective function and the same constraint function.

Keywords: Gapoktan, Rice Cultivation, UPJA, Linear Programing,

Topic: Agricultural structures and environmental engineering

Link: https://ifory.id/abstract/BVt8zy97NYFr

Conference: The 3rd International Symposium on Agricultural and Biosystem Engineering (ISABE 2019)

Plain Format | Corresponding Author (sandi asmara)

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