Respon Pertumbuhan Bibit Kopi Liberika Tungkal Komposit (Coffea Liberica) terhadap Frekuensi Pemberian Pupuk Organik Cair Asal Pengolahan Buah Kopi Liberika

Yulistiati Nengsih, Ridawati Marpaung, Lizyanti Andriyani, Samzul Karmaini

Abstract


Wet processing of coffee produced liquid waste containing organic compounds that can be recovered as liquid organic fertilizer (LOF). Field research was conducted at the Faculty of Agriculture's experimental garden, while growth analysis took place in the Faculty of Agriculture laboratory at Batanghari University. The study was carried out from November 2025 to January 2026. The materials used included 3-month-old Liberica coffee seedlings. Equipment included writing instruments, hoes, measuring tapes, sieves, analytical balances, ovens, calipers, polybags, shade netting, and other research-supporting tools. A Completely Randomized Design (CRD) was employed. The treatment design involved varying the application frequency (p) of the LOF as follows: p0 (control), p1 (every 30 days for 90 days), p2 (every 15 days for 90 days), and p3 (every 10 days for 90 days). Each treatment was replicated three times, resulting in 12 experimental plots. The experimental procedure encompassed LOF production and chemical analysis, land preparation, preparation of planting media and seedlings, seedling transplanting, LOF application, and maintenance. Observed parameters included plant height, stem diameter, total leaf area, shoot dry weight, root dry weight, shoot root ratio, seedling quality index, leaf color, and soil chemical analysis. The results indicated that the LOF application frequency significantly affected plant height, stem diameter, total leaf area, shoot dry weight, root dry weight, and seedling quality index, whereas the shoot root ratio showed no significant difference. Treatment p3 yielded the highest growth across all parameters, showing increases of 67.35% in plant height, 29.08% in stem diameter, 60.37% in total leaf area, 28.83% in leaf color, 65.37% in shoot dry weight, 85.71% in root dry weight, and 48.31% in seedling quality index compared to the control treatment for Liberica coffee seedlings.

Keywords


coffea liberica, liquid organic fertilizer (LOF, Coffee Processing wastewater

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DOI: http://dx.doi.org/10.33087/jagro.v11i2.339

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