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All Journal Leuser Journal of Environmental Studies Ekonomikalia Journal of Economics
Qalbin Salim Fazli
Department of Plant Protection, Faculty of Agriculture, IPB University, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Other

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Environmental Influence of Altitude on Coffee Leaf Rust Severity in Arabica Coffee of Aceh Tengah, Indonesia Teguh Arkadinata; Qalbin Salim Fazli; Alfizar Alfizar; Lukman Hakim; Ghazi Mauer Idroes
Leuser Journal of Environmental Studies Vol. 3 No. 2 (2025): October 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v3i2.344

Abstract

Coffee leaf rust (CLR), caused by Hemileia vastatrix, remains one of the most damaging diseases affecting Arabica coffee worldwide. Understanding how environmental gradients influence CLR development is critical for sustainable management in tropical highland systems. This study examined the influence of altitude on CLR incidence and severity across five elevation ranges (800–1800 masl) in Arabica coffee plantations of Aceh Tengah, Indonesia. Field assessments were conducted on 25 farms using a standardized sampling layout and severity scoring scale. Analysis of variance (ANOVA) revealed that altitude had no significant effect on disease incidence (F = 0.14 < F0.05 = 3.01), which remained uniformly high across all sites (>75%), but significantly affected disease severity (F = 3.34 > F0.05 = 3.01). The highest mean severity (51.88%) occurred at 1600–1800 masl, differing significantly from lower elevations. These findings suggest that while CLR infection frequency is widespread, environmental conditions at higher altitudes favor greater lesion expansion and disease development. The results highlight the importance of considering local microclimatic variability in disease risk assessment and adaptive management. Further studies integrating microclimatic and agronomic measurements are needed to strengthen causal understanding and support environmentally based strategies for sustainable Arabica coffee production.
Mapping the Evolution of Agricultural Economics: A Bibliometric Analysis of the Nexus Between Economic Growth, Environmental Sustainability, and Econometric Modeling Qalbin Salim Fazli; Mussa Isaack Delya; Muhammad Akbar Almuchty; Iffah Hafizah; Dimas Bagus Wiranatakusuma
Ekonomikalia Journal of Economics Vol. 3 No. 2 (2025): October 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/eje.v3i2.345

Abstract

Understanding how agriculture contributes to economic growth while maintaining environmental sustainability has become an essential question in contemporary development research. To examine how this interdisciplinary field has evolved, this study employs a bibliometric analysis of 394 Scopus-indexed articles retrieved on 3 October 2025, reflecting research published from 1975 through 2025, focusing on the intersection of agriculture, economic growth, environmental sustainability, and econometric modeling. Data were analyzed with VOSviewer and CiteSpace to map research trends, collaboration, and methodological patterns. The results indicate a consistent rise in publication activity and citation impact, reflecting the growing scholarly attention to sustainable agricultural economics. Asian countries, particularly China, India, Malaysia, and Indonesia, have emerged as leading contributors, highlighting the region’s central role in agricultural transformation and policy-driven research. Econometric approaches such as time series, panel data, and cointegration models dominate methodological trends, underscoring the discipline’s increasing reliance on quantitative analysis. However, international and interinstitutional collaboration remains limited, suggesting that greater integration is needed to achieve a more unified global research landscape. The findings provide valuable insights into the intellectual structure and evolution of agricultural economics, offering a foundation for future studies that aim to strengthen methodological diversity and advance sustainable development policies.
Co-Authors Alfizar Alfizar Dimas Bagus Wiranatakusuma Ghazi Mauer Idroes Iffah Hafizah Lukman Hakim Muhammad Akbar Almuchty Mussa Isaack Delya Teguh Arkadinata