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All Journal Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri JASTEN (Jurnal Aplikasi Sains Teknologi Nasional
Sony Haryanto
Institut Teknologi Nasional Malang
Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Physics Other

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Pemanfaatan Lahan Menganggur Untuk Meningkatkan Produksi Kedelai Indonesia Guna Memenuhi Kebutuhan Masyarakat Nelly Nelly; Renny Septiari; Sony Haryanto
JASTEN (Jurnal Aplikasi Sains Teknologi Nasional) Vol. 3 No. 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (883.389 KB) | DOI: 10.36040/jasten.v3i1.3437

Abstract

The deficit of soybean in Indonesia is estimated at 226% by 2019 (Preliminary Study of the National Medium Term Development Plan / RPJMN, Directorate of Food and Agriculture, 2013: 169). In Indonesia, soybeans are a strategic food commodity, in third place after rice and maize. Every day, soybeans are consumed by almost all people. Soybean consumption in Indonesia averages 8.22 kg / capita / year (Directorate of Food and Agriculture, 2014: 6). On the one hand, Indonesia is currently the 6th largest soybean producing country in the world (Heriyanto, 2012: 116 and the Center for Agricultural Data and Information Systems, 2014: 36). On the other hand, Indonesia is the 9th largest soybean importer country in the world (Center for Agricultural Data and Information Systems, 2013: 36). ). BATAN assesses that imported soybeans other than transgenic, the levels are left behind, may be taken by their country of origin or because they have taken too long to travel (Directorate of Food and Agriculture. 2013: 154). The purpose of this community service is to invite the community to produce domestically produced soybeans so that the need for soybeans can be met, but not from imports. Can change the mindset of soybean farmers not to change to other crop commodities, especially plants with lower protein value and less benefit. Inviting the community / farmers to change the function of the land or use the land. The service was carried out by applying 5 superior seeds planted under the sengon tree using the intercropping method. Processing and data analysis using experimental design, which is in accordance with the treatment. In the cultivation of domestically produced soybeans, many varieties have been found, so the model used is random, meaning that the conclusion applies to all other domestically produced soybean varieties. The research was carried out in areas with high soybean consumption but very little production, among others in Malang (Malang Regency). The results of the analysis using a subsampling block design with a random model for the treatment of varieties with the planting location under the sengon tree in Pulung dowo village, Tumpang sub-district, Malang district.
Efficiency Improvement in Raw Material Inventory Management Using EOQ and POQ (Study Case: PT. Varia Usaha Beton) Tsania Lutfia Salsabila Ali Tamam; Fourry Handoko; Sony Haryanto
JTI: Jurnal Teknik Industri Vol 11 No 1 (2025): JUNI 2025
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jti.v11i1.35903

Abstract

This study aims to calculate the need for inventory and ordering of raw materials for concrete production at PT. Varia Usaha Beton optimally so that there is no excess or shortage of inventory to minimize total costs using the EOQ and POQ methods, and comparing the EOQ and POQ methods that will be applied. This study is a descriptive study with a quantitative approach. Data collection is carried out using observation and interview techniques. The results of this study show that by the EOQ method, the quantity of cement raw material orders is 3,109.01 tons with an ordering period of 3 times per year and a total inventory cost of Rp124,110,362.54. Then, in the POQ method, the quantity of cement raw material orders is 708.12 tons with an ordering frequency of 12 times in one year, with an annual inventory cost of Rp368,875,317.77. With the EOQ method, the quantity of raw materials ordered for sand is 9,630.01 tons with an ordering period of 3 times per year and a total inventory cost of Rp 126,473,726.00. Then, in the POQ method, the quantity of raw materials ordered for sand is 2,515.78 tons, with an ordering frequency of 12 times in one year, with an annual inventory cost of Rp 368,875,317.77. With the EOQ method, the quantity of raw materials ordered for stone is 8,383.57 tons with an ordering period of 3 times per year and a total inventory cost of Rp 111,871,065.21. Then, in the POQ method, the quantity of raw materials ordered for stone is 2,429.67 tons, with an ordering frequency of 12 times in one year, with an annual inventory cost of Rp 242,855,765.96. Thus, using the EOQ method produces a lower total cost than the POQ method, by implementing the EOQ method in managing raw material inventory at PT. Varia Usaha Beton in 2023 is projected to save 80.5% of the previous costs on cement raw materials, 80.8% on sand raw materials, and 81% on stone raw materials. Keywords: Inventory Control, Inventory, Economic Order Quantity, Periodic Order Quantity
Co-Authors Fourry Handoko Nelly Nelly Renny Septiari Tsania Lutfia Salsabila Ali Tamam