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Tati Maharani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Immunology & microbiology

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MULTIPLIKASI ANGGREK (Dendrobium sp) DENGAN PEMBERIAN ZPT ZEATIN DAN IAA (Indole Acetic Acid) SECARA IN-VITRO Syafiq Zulhakim; Maizar; Adelina Maryanti; Tati Maharani
DINAMIKA PERTANIAN Vol. 41 No. 3 (2025): Jurnal Dinamika Pertanian Edisi Desember 2025
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2025.vol41(3).27366

Abstract

The research entitled Multiplication of Orchid Dendrobium sp. by Giving GRS Zeatin and IAA (Indole Acetic Acid) In Vitro was carried out at the Biotechnology Laboratory of the Faculty of Agriculture, Islamic University of Riau, Pekanbaru City. The research was conducted over three months, from December 2022 to February 2023. This study aimed to obtain a combination of Zeatin and IAA (Indole Acetic Acid) concentrations that had the best effect on the growth of Dendrobium orchid explants in tissue culture. The design used in this study was a factorial experiment in a completely randomized design (CRD), consisting of two factors and three replications. The first factor was Zeatin (Z) at concentrations of 0, 2.0, 4.0, and 6.0 ppm, while the second factor was IAA at concentrations of 0, 0.5, 1, and 1.5 ppm. Parameters observed were explant survival (%), shoot age (days), root age (days), number of shoots (fruits), number of roots (fruits), shoot length (cm), and root length (cm). The observational data were analyzed statistically, and the BNJ follow-up test was conducted at the 5% level. The results showed that the interaction between Zeatin and IAA had a significant effect on shoot age, root age, number of shoots, number of roots, shoot length, and root length, with the best concentrations being Zeatin (6 ppm) and IAA (1 ppm). Meanwhile, the percentage of explant survival did not have a significant effect.
Interaksi Pupuk Organik Cair GDM dan Pupuk NPK 16-16-16 terhadap Pertumbuhan Bibit Kakao (Theobroma cacao L.) pada Tanah Podsolik Merah Kuning: Interaction between GDM Liquid Organic Fertilizer and NPK 16-16-16 on the Growth of Cacao (Theobroma cacao L.) Seedlings Grown on Red-Yellow Podzolic Soil Feri Ardiansyah Pratama; Tati Maharani; Mardaleni; Salmita Salman; Adelina Maryanti
DINAMIKA PERTANIAN Vol. 42 No. 2 (2026): Jurnal Dinamika Pertanian Agustus 2026
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2026.vol42(2).29374

Abstract

Background: Cacao (Theobroma cacao L.) is an economically important plantation crop in Indonesia, but its growth is constrained by seedling quality and the acidic, nutrient-poor conditions of Red-Yellow Podzolic (RYP) soil. Therefore, appropriate fertilization is essential to support seedling growth. Objective: This study aimed to evaluate the interaction between GDM liquid organic fertilizer (LOF) and NPK 16-16-16 fertilizer, as well as their individual effects, on the vegetative growth of cacao seedlings. Methods: The experiment was arranged in a 4 x 4 factorial Completely Randomized Design with three replications using four GDM LOF concentrations and four NPK 16-16-16 application rates. Plant height, leaf number, stem diameter, root length, root volume, fresh weight, and dry weight were measured and analyzed using analysis of variance followed by Tukey’s Honestly Significant Difference test at the 5% level. Results: The results showed that the interaction between GDM LOF and NPK 16-16-16 significantly affected all growth parameters except root length, which was influenced only by the individual effects of each treatment. The combination of 25 mL L-1 GDM LOF and 12 g polybag-1 NPK 16-16-16 consistently resulted in the best overall growth performance of cacao seedlings. Conclusions: Overall, combined organic and inorganic fertilization improved cacao seedling growth on RYP soil, indicating that GDM LOF and NPK 16-16-16 can serve as an effective and cost-efficient fertilization strategy.
Co-Authors Adelina Maryanti Feri Ardiansyah Pratama Maizar Mardaleni Salmita Salman Syafiq Zulhakim