Pengaruh Fungsi Manajemen POAC terhadap Kinerja Proyek Peningkatan Jaringan Irigasi Sebulu Modern, Kabupaten Kutai Kartanegara

Abstract

Irrigation network improvement projects are strategic public works for food security, yet their delivery often suffers from delays, cost deviations, and quality problems rooted in weak project management. Indonesian studies of construction management functions focus mostly on building projects, leaving water-resources infrastructure in East Kalimantan under-examined. This study analyses the influence of Planning, Organizing, Actuating, and Controlling (POAC) on the performance of the Sebulu Modern Irrigation Network Improvement Project, Kutai Kartanegara Regency, delivered by the East Kalimantan Provincial Public Works Agency and its contractor. An explanatory quantitative design was applied. Data from 51 purposively selected respondents were collected through a 24-item six-point Likert questionnaire and analysed using validity and reliability tests, classical assumption tests, multiple linear regression, and effective-contribution analysis in SPSS 30. The four functions jointly explained 81.0% of the variance in project performance (F = 49.020; p < 0.001). Planning (β = 0.438; p < 0.001), organizing (β = 0.333; p = 0.001), and actuating (β = 0.291; p = 0.002) had significant positive effects, whereas controlling was not significant (β = 0.075; p = 0.614) despite having the strongest bivariate correlation (r = 0.820). Planning provided the largest effective contribution (32.6%). The non-significance of controlling is attributed to its high overlap with the other functions (tolerance = 0.191), suggesting that supervision operates as an embedded administrative routine rather than an independent performance driver. Public irrigation projects should therefore prioritise front-end planning and clear inter-party organisation, while redesigning controlling into an indicator-based early-warning system.