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All Journal Jurnal Agronomi Tanaman Tropika (JUATIKA) Agroteknika
Eko Wahyudi
Universitas Riau
Agriculture, Biological Sciences & Forestry Energy Engineering Mechanical Engineering

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Improving the Quality of Coconut Fruit (Cocos nucifera L.) by Adjusting Planting Age Eko Wahyudi; M. Amrul Khoiri; Qory Fadillah Cahya; Anthony Hamzah; Rizki Al Khairi Barus
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 7 No. 3 (2025): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 7 No. 3 September 2025
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v7i3.4776

Abstract

Coconut (Cocos nucifera L.) is a strategic plantation crop in Indonesia, playing important roles in society, the economy, and industry. Indragiri Hilir Regency is the largest producer of coconut in Riau Province; however, productivity has declined as plantations have aged. This study aimed to analyze the quality of coconut fruit based on plant age. A non-experimental comparative observational design was employed with three plant age treatments (15, 20, and 25 years). Each treatment was replicated six times, yielding 18 experimental units. Each unit consisted of two sample plants, totaling 36 plants. The measured parameters included endosperm thickness (mm), oil yield (%), and oil moisture content (%). For oil yield and moisture analysis, two mature coconuts were collected from each plant and analyzed in the laboratory, resulting in 36 samples. Data were analyzed using one-way ANOVA, and significant results were further tested using Tukey's HSD at the 5% level. The results showed that plant age had a considerable effect on endosperm thickness, oil yield, and moisture content. These findings suggest that plant age affects coconut fruit quality, with 25-year-old trees producing the highest-quality fruits in the Tembilahan Hulu District, Indragiri Hilir Regency. This study offers recommendations for coconut farmers to optimize cultivation strategies, thereby enhancing production and fruit quality.
Effect of Sulfuric Acid (H₂SO₄) Scarification on Seed Dormancy Breaking and Germination of Soursop (Annona muricata L.) Eko Wahyudi; Melati Hutabarat; Elza Zuhry; Elisa Apriliani; Dian Rakhmad; Nurbaiti Nurbaiti; Anthony Hamzah; Chandra Gunawan; Yunandra Yunandra
Agroteknika Vol 9 No 2 (2026): Juni 2026
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/agroteknika.v9i2.668

Abstract

Soursop (Annona muricata L.) is a tropical fruit plant with high economic value; however, its cultivation is limited by seed dormancy, which delays germination. This study aimed to determine the most effective sulfuric acid (H₂SO₄) concentration for breaking seed dormancy and improving seed viability of soursop. The experiment was conducted at the Greenhouse and Plant Breeding Laboratory, Faculty of Agriculture, Universitas Riau, and implemented using a completely randomized design with four treatments: 0% (control), 70%, 75%, and 80% H2SO4 concentration. Each treatment was repeated five times. A total of 20 experimental units were obtained, each consisting of 25 seeds, for a total of 500 seeds used in the experiment. The results indicated that sulfuric acid treatment significantly affected most germination parameters. Seeds soaked in a 75% sulfuric acid solution exhibited the fastest germination time (28.40 Day After Planting), the highest germination percentage (88.80 %), and the strongest seed vigor (5.55%). These findings suggest that chemical scarification with 75% H₂SO₄ for 30 minutes can serve as a practical and efficient pre-sowing treatment to improve seedling establishment in soursop propagation.
Co-Authors Anthony Hamzah Chandra Gunawan Dian Rakhmad Elisa Apriliani Elza Zuhry Khoiri, M. Amrul Melati Hutabarat Nurbaiti Nurbaiti Qory Fadillah Cahya Rizki Al Khairi Barus Yunandra