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All Journal Indonesian Journal of Engineering and Technology (INAJET)
Nur Faizah
Universitas 17 Agustus 1945 Surabaya
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering

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Analysis of the Corn Supply Chain to Increase Farmers’ Profits in Napis Village Nur Faizah
Indonesian Journal of Engineering and Technology (INAJET) Vol. 8 No. 2 (2026): April 2026
Publisher : Fakultas Teknik Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajet.v8n2.p32-39

Abstract

Bojonegoro Regency, particularly Napis Village in Tambakrejo District, is a major corn-producing center in East Java that faces supply chain challenges such as limited access to capital, fluctuations in input costs, and low bargaining power among farmers due to their dependence on informal middlemen. This study aims to identify the factors affecting farmers’ profits, develop and validate a Dynamic Systems model based on actual data from 2021–2025, and formulate strategies for strengthening a sustainable supply chain. A combined PLS-SEM and Dynamic Systems (STELLA) approach was applied using data from 60 respondents. The PLS-SEM analysis confirmed that access to capital is the most dominant factor influencing profits (path coefficient = 0.504; T-statistic = 4.947; P-value = 0.000). Simulations of three scenarios (2026–2030) showed that the scenario involving labor substitution through the adoption of collective corn planting technology managed by Gapoktan (Scenario 3) was the best option because it reduced operating costs by Rp4.36 billion without increasing farmers’ debt burden. Gapoktan-based supply chain restructuring breaks farmers’ financial dependence on middlemen and restores farmers’ bargaining power in determining corn selling prices.
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