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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Agro Bali: Agricultural Journal
Ni Luh Made Pradnyawathi
Udayana University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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GA3 and KCl Application as An Effort to Improve the Quality of Local Bali Grapes (Vitis vinifera L. var. Alphonso Lavallee) Julfikar Julfikar; Ida Ayu Putri Darmawati; Rindang Dwiyani; Made Sri Sumarniasih; Anak Agung Sugiarta; Ni Luh Made Pradnyawathi; Yuyun Fitriani; I Made Basma Redana
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.12958

Abstract

The global demand for table grapes continues to rise, driven by consumer preference for sweet, high-quality, and seedless fruit. Local varieties such as Bali grape (Vitis vinifera L. var. Alphonso Lavallee) remain less competitive than imported grapes due to small berry size, high acidity, and seed presence. This study evaluated the optimal concentrations of gibberellic acid (GA3) and potassium chloride (KCl) and their interaction effects on Bali grape fruit quality. The experiment used a factorial randomized complete block design with two factors: GA3 at 0, 50, 100, and 150 ppm, and KCl at 0 and 300 g per plant, with five replications. The results showed that GA3 significantly affected all observed parameters. Application of GA3 at 150 ppm produced the longest clusters, largest berry diameter, highest berry weight, and greatest sugar content, while simultaneously reducing seed number and seed weight, indicating induced parthenocarpy. KCl application significantly increased sugar content and berry diameter but did not influence seed characteristics. A significant interaction between GA3 150 ppm and KCl 300 g per plant was observed, resulting in the highest number of berries per cluster and the highest sugar concentration. Combined GA3 and KCl application improved fruit quality and enhanced Bali grape competitiveness
Optimizing Seedling Density per Planting Hole of Lettuce (Lactuca sativa L. var. longifolia) in a Deep Flow Technique Hydroponic System I Gede Febriana; Gede Wijana; I Made Sukewijaya; Ida Ayu Putri Darmawati; Ni Luh Made Pradnyawathi
Agro Bali : Agricultural Journal Vol 8, No 3 (2025)
Publisher : Universitas Panji Sakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37637/ab.v8i3.2441

Abstract

Market demand for baby romaine lettuce (Lactuca sativa L. var. longifolia) continues to rise alongside the public’s growing preference for healthy lifestyles, yet its productivity still needs improvement. This study aims to evaluate the effect of seedling density per planting hole on the growth and yield of baby romaine lettuce using the Deep Flow Technique (DFT) hydroponic system and to determine the optimal number of seedlings. The experiment was conducted in a greenhouse in Pelaga Village, Bali, using a completely randomized design (CRD) with a single factor comprising five seedling densities (1, 2, 3, 4, and 5 seedlings per hole) and six replications, totaling 120 plants.  Growth and yield parameters were analyzed using ANOVA and LSD at a 5% significance level, with regression applied to fresh shoot and crop weight. Results showed that increasing the number of seedlings significantly affected plant height, stem diameter, chlorophyll content, fresh and dry shoot weight, and total fresh biomass. Shoot fresh weight increased linearly (Y = 97.86 + 11.71X; R² = 0.975), while crop fresh weight followed a quadratic trend (Y = 70.64 + 8.10X – 1.00X²; R² = 0.863), with the optimal yield obtained at three seedlings per hole. It is concluded that planting three seedlings per hole offers the best outcome in terms of both quality and quantity in a DFT hydroponic system.
Co-Authors Anak Agung Gede Sugianthara Anak Agung Sugiarta GEDE WIJANA I Gede Febriana I Made Basma Redana I Made Sukewijaya Ida Ayu Putri Darmawati Julfikar Julfikar MADE SRI SUMARNIASIH Putu Devamirna Vedatya Rindang Dwiyani Yuyun Fitriani