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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Multidiciplinary Output Research for Actual and International Issue (Morfai Journal)
Mukhlis
Universitas Muhammadiyah Tapanuli Selatan
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Integrasi Evaluasi Eksperimental dan Analisis Bibliometrik Photosynthetic Bacteria dan Jakaba sebagai Bioaktivator Pertanian Organik Nanda; Rafiqah Amanda Lubis; Mukhlis; Fery Endang Nasution; Luky Wahyu Sipahutar
Jurnal Penelitian Pendidikan IPA Vol 11 No 7 (2025): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i7.11789

Abstract

The excessive use of synthetic chemical inputs in agriculture has led to soil degradation, highlighting the need for environmentally friendly bioactivator alternatives. This study aims to integrate bibliometric analysis and experimental evaluation of Photosynthetic Bacteria (PSB) and Jakaba (Corallomycetella repens) as bioactivators in organic farming systems. Bibliometric analysis was conducted using Scopus publications from 2015–2025 and visualized with VOSviewer to map research trends, dominant keywords, and the publication status of PSB and Jakaba. A field experiment was then carried out in Kaluku Tinggu Village, Sigi District, using hybrid corn (Bisi-18) with four treatments: control, PSB, Jakaba, and a combination of PSB+Jakaba. Data were analyzed using ANOVA and Tukey HSD test, supported by Response Surface Methodology (RSM) for treatment effectiveness evaluation. Results showed that the PSB+Jakaba combination increased plant height (15.3%), fresh weight (20.9%), dry weight (25.1%), soil pH (13.5%), organic C content (41.2%), cation exchange capacity (27.6%), microbial population (24%), and dehydrogenase activity (36.3%) compared to the control. Active compounds such as IAA and siderophores from PSB, along with lignocellulolytic enzymes from Jakaba, played key roles in improving soil quality. This study bridges the scientific knowledge gap and reinforces the potential of local bioactivator formulations for sustainable organic farming on marginal land.
STRUCTURE AND VALUE DISTRIBUTION IN THE MARKETING CHAIN OF SMALLHOLDER ARABICA COFFEE IN SOUTH TAPANULI REGENCY Ade Anisa; Rafiqah Amanda Lubis; Mukhlis; Aisyah Nurmi
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 4 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

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Abstract

Smallholder Arabica coffee in South Tapanuli Regency has strong potential as a leading commodity; However, farmers face persistent challenges, including weak bargaining power and unequal value distribution along the marketing chain. This study aims to analyze the structure of the Arabica coffee marketing chain, examine farmers' perceptions of the marketing system, and identify factors influencing farmers' income. The research was conducted from March to April 2025 in Simanosor, within the Darul Mursyid Islamic Boarding School (PDM) area, South Tapanuli Regency. A quantitative descriptive method was applied using purposive sampling of 30 Arabica coffee farmers. Data analysis included descriptive analysis of the marketing chain, Likert scale measurement for farmers' perceptions, and multiple linear regression to determine income-influencing factors. The results indicate that all farmers sell their harvest as red cherries, with an average price of IDR 17,450/kg and an average annual net income of IDR 103,516,667. Farmers' perceptions of the marketing system are categorized as very positive, with an average score of 4.91 out of 5. Regression analysis reveals that selling price and production volume significantly affect farmers' income, while cooperative access and price information access do not. The model's R² value of 0.741 shows that 74.1% of income variation is explained by the variables. These findings highlight the importance of improving productivity and stabilizing farm-gate prices to enhance farmers' income.
Co-Authors Ade Anisa Luky Wahyu Sipahutar Nanda Nasution, Fery Endang Nurmi, Aisyah Rafiqah Amanda Lubis, Rafiqah Amanda