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All Journal Jurnal Lahan Suboptimal
Ratih Wijayanti
Environmental Science Study Program, Faculty of Science and Technology, Universitas Serasan, Muara Enim 31311, South Sumatra, Indonesia
Agriculture, Biological Sciences & Forestry

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Knowledge and adaptation strategies of coffee smallholders toward climate change: evidence from Tanjung Agung, Semende Darat Ulu Asia Afriyani; Tuty Emilia Agustina; Aura Khalisya Putri Hsaa; Ratih Wijayanti; Ali Martinus
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.1.2026.776

Abstract

Coffee farming was highly vulnerable to the impacts of climate change. Exploring the strategies used by small farmers in Tanjung Agung Village has had a big impact on climate change. This study aimed to identify the level of knowledge, adaptation practices, and polyculture practices and types of shade trees used by coffee smallholders in facing climate change in Tanjung Agung Village, Semende Darat Ulu Regency. These strategies have made a significant difference. This study used a qualitative, survey-based approach. It also conducted data collection and analysis. This process was both simultaneous and cyclical coffee smallholders have noticed the effects of climate change in the last 1-2 years. Also, 35% of smallholders have known about climate change for the last 3-5 years. Coffee smallholders use indicators to predict climate change. These indicators include increased temperatures and shifts in the rainy and dry seasons. Water availability was also an indicator. Up to 90% of small farmers take steps to reduce climate change. These steps include using better types of coffee, planting trees for shade, and controlling how far apart the coffee plants were. Farmers also make air holes and use coffee bean skins to improve the soil. Our findings show that coffee smallholders understand climate change impacts well. They also quickly use strategies to adapt their crops to the changing climate. Smallholders use 16 types of shade crops as a strategy. The most widely used shade crops were petai, mango, avocado and durian.
Growth and adaptability of Pterocarpus indicus, Delonix regia, and Melaleuca cajuputi in post-coal mining Khairuddin Khairuddin; Restu Juniah; Ratih Wijayanti; Asia Afriyani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.798

Abstract

Reclamation of post-mining coal land requires effective revegetation strategies to accelerate ecosystem recovery and establish sustainable vegetation. The purpose of this study was to evaluated the effects of fertiliser dose on the vegetative growth of Pterocarpus indicus, Delonix regia, and Melaleuca cajuputi grown in post-mining reclamation soil. The experiment was conducted using plants cultivated in polybags containing reclamation soil and subjected to different fertilizer doses. Growth was evaluated based on plant height, stem diameter, and number of leaves, while data were analysed using analysis of variance (ANOVA) at a 5% significance level. The results showed that increasing the fertiliser dose up to 5 kg produced the best overall growth, with mean plant height, stem diameter, and number of leaves reaching 82.80 cm, 3.76 cm, and 188.22, respectively. Fertiliser dose significantly affected the growth of P. indicus and M. cajuputi (P<0.05), whereas D. regia showed a relatively stable response to increasing fertilizer doses. Overall, a 5 kg fertilizer dose was the most effective treatment for promoting vegetative growth under the tested reclamation-soil conditions. These findings provide a basis for optimizing fertilizer application and selecting suitable plant species for revegetation of post-mining coal land.
Co-Authors Ali Martinus Asia Afriyani Aura Khalisya Putri Hsaa Khairuddin Khairuddin Restu Juniah Tuty Emilia Agustina