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Gunung Djati Conference Series
ISSN : 27746585     EISSN : -     DOI : -
Gunung Djati Conference Series merupakan penyedia layanan publikasi dan konferensi berbagai bidang keilmuan yang diterbitkan oleh UIN Sunan Gunung Djati Bandung dan sebagai sarana publikasi hasil penelitian. Penerbit ini memuat artikel yang belum pernah dipublikasikan sebelumnya yang berupa artikel hasil penelitian ataupun penelitian terapan. Informasi mengenai pedoman penulisan artikel dan prosedur pengiriman artikel terdapat pada setiap penerbitan. Semua artikel yang masuk akan melalui ‘peer-review process’ setelah memenuhi persyaratan sesuai pedoman penulisan artikel, kemudian penerbit menyerahkan semua template ke pelaksana konferensi keilmuan. Penerbitan artikel ini dilakukan sesuai kegiatan yang dilaksanakan oleh penyelenggara konferensi.
Arjuna Subject : Umum - Umum
Articles 2,030 Documents
CHEMICAL CONTROL OF MOSS AND EPIPHYTIC WEEDS ON PRUNED SEEDLING TEA PLANTS: EFFECTIVENESS, PHYTOTOXICITY, AND ECONOMIC ANALYSIS Ahmad Ghozali Ardiansyah; Gina Nur’aini Buchory; Fani Fauziah
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3394

Abstract

Moss and epiphytic weeds colonizing pruned tea (Camellia sinensis) stems impede shoot regeneration and increase production costs through labour-intensive manual removal. This study evaluated three chemical treatments, (A) herbicide ammonium glufosinate (5 ml/L) + sticker; (B) soda ash (30 kg/ha) + lime (40 kg/ha); and (C) fungicide (1 kg/ha), against (D) an untreated control, using a randomized complete block design with six replications across 24 plots (25 m² each) at Tea Plantation, West Java, from August to December 2025. Parameters assessed included moss and weed dry biomass, shoot count, shoot height, relative shoot elongation rate (RSER), phytotoxicity, and cost per hectare. All chemical treatments significantly reduced moss and weed biomass at 2–4 weeks after application (WAA), with biomass shrinkage of 66–71%. Efficacy declined by 8 WAA coinciding with increased rainfall (197.5 mm), confirming the transient nature of chemical suppression under humid highland conditions. Treatment B caused visible phytotoxicity, leaf blackening and white surface deposits, making it unsuitable for routine application. The untreated control produced the highest shoot count (236 shoots; significantly greater than treatments A and B), while absolute final shoot height at 112 DAA was numerically greatest in Treatment C (17.25 cm vs. 15.35 cm in the control), although the corresponding shoot height increment did not differ significantly among treatments (13.20–15.31 cm); Treatment B recorded the significantly highest RSER (0.033 day⁻¹) relative to the control (0.024 day⁻¹), though A and C were not significantly distinguishable from either. Economic analysis revealed fungicide as the most cost-efficient option at IDR 213,833/ha, compared to IDR 265,333/ha (A) and IDR 544,333/ha (B).
THE SUPPLY CHAIN OF FRESH TEA LEAVES FROM SMALLHOLDER FARMERS IN BANDUNG REGENCY Sotya T. Anggita; Fadil Bagaskara; Kralawi Sita; Yayan Herdiana
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3395

Abstract

This study aims to map the structure, distribution flow, and dynamics of the smallholder tea shoot supply chain in Bandung Regency, Indonesia, with a focus on industrial absorption capacity, supply gaps, and strengthening upstream–downstream partnerships. The research employed a survey approach involving smallholder tea farmers and tea processing factories receiving fresh tea leaves, complemented by a descriptive supply chain analysis. The supply chain is characterized by farmers as the primary producers, who generally market fresh tea leaves through multiple layers of collectors (Collector 1 to Collector 3) before reaching processing factories. The receiving factories comprise smallholder-owned tea factories, private tea factories, and factories managed by the Indonesia Research Institute for Tea and Cinchona (IRITC), with smallholder tea factories operated either by Village Unit Cooperatives or individual owners. In several cases, the supply chain has begun to exhibit a disintermediation pattern, whereby farmers or farmer groups deliver fresh tea leaves directly to processing factories. The study identified at least 11 factories receiving smallholder tea leaves, with a combined processing capacity of approximately 75–100 tons of fresh tea leaves per day, whereas the current production reaches only 45–50 tons per day, resulting in a substantial supply gap. This condition reflects suboptimal productivity, inconsistent tea shoot quality, and weak price incentives at the farm level. In addition, an alternative supply chain serving premium markets, such as cafés and tea houses, has emerged, although its scale remains limited. Strengthening upstream–downstream partnerships is essential to improve coordination, ensure product traceability, enhance quality, and promote price transparency and stability. The required strategies include increasing production through crop intensification and replanting, improving harvesting and postharvest practices, strengthening farmer organizations, and diversifying market channels to enhance value addition and ensure the long-term sustainability of the smallholder tea supply chain.
EFFECTS OF POTASSIUM ON MUNG BEAN YIELD COMPONENTS, YIELD, AND YIELD QUALITY UNDER DROUGHT STRESS Zavira Nurul Rachmaniar; Eka Kartina; Aep Wawan Irwan; Fiky Yulianto Wicaksono
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3396

Abstract

Mung bean (Vigna radiata L.) is an important crop contributing to global food security. However, its productivity is severely affected by drought stress, particularly during the growth and grain filling stages. Drought stress reduces yield components such as pod number, seeds per pod, and grain weight due to disruptions in physiological and metabolic processes. It also negatively impacts crop quality by limiting nutrient accumulation and grain development. Potassium plays an important role in increasing plant tolerance to drought stress through various mechanisms. At the physiological level, potassium increases the efficiency of photosynthesis, regulates stomatal function, and maintains cellular osmotic balance, allowing plants to maintain turgor and metabolic activity under conditions of water deficit. At the biochemical level, potassium activates antioxidant enzymes that mitigate oxidative damage caused by reactive oxygen species. Furthermore, potassium supports the translocation of assimilates from source to recipient organs, thus promoting pod formation and grain filling. Adequate potassium supply also improves crop quality, including better nutrient content and grain uniformity. The interaction between potassium and water availability exhibits a synergistic effect, with optimal potassium levels increasing water use efficiency and mitigating the negative impacts of drought stress. Therefore, proper potassium management combined with efficient irrigation strategies is crucial for maintaining mung bean productivity and quality under drought conditions, thus supporting a more adaptive and sustainable agricultural system.
CARROT FARMING (DAUCUS CARORA L.) AT PT FUJITAKE SHOUTEN CO., LTD., NAGASAKI PREFECTURE, JAPAN Farah Nur Syahida; Neneng Kartika Rini; Endang Tri Astutiningsih
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3397

Abstract

This study analyzes the production system and economic feasibility of carrot farming (Daucus carota L.) at PT Fujitake Shouten Co., Ltd., Nagasaki Prefecture, Japan. A descriptive quantitative approach was applied using observation, interviews, and documentation. The production system includes land preparation, planting, maintenance, harvesting, and post-harvest handling across two production cycles per year. The results show that annual production ranges from 300,000 to 400,000 kg. The total production cost is IDR 400,000,000 per year, while total revenue reaches IDR 500,000,000. The net income obtained is IDR 100,000,000 per year. The R/C ratio of 1.25 indicates that the farming system is economically feasible, as revenue exceeds total costs. The B/C ratio of 0.25 reflects moderate efficiency influenced by multi-activity farm operations and post-harvest processes such as sorting and packaging. Overall, the study concludes that efficient input management and a well-structured production system are essential to maintain farm sustainability and economic performance.
SCREENING OF INDONESIAN SINENSIS TEA CLONES (Camellia sinensis var. sinensis) FOR HIGH-QUALITY GREEN TEA: EMPHASIS ON INDONESIAN NATIONAL STANDARDS COMPLIANCE, HIGH PROTEIN, AND LOW CAFFEINE M. Khais Prayoga; Koko Dwi Sutanto; Heri Syahrian; Vitria P. Rahadi; Bariza K. Humam; Dwinita W. Utami
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3398

Abstract

Tea is one of the oldest beverages known to humanity, with green tea being among the most popular types due to its distinctive flavor and health benefits. The development of green tea is essential, both in terms of sensory quality and functional value. This study aimed to screen 35 Indonesian Sinensis tea clones to identify those with superior flavor, compliance with Indonesian National Standards (SNI), high protein content, and low caffeine levels. The research was conducted by processing fresh tea shoots into green tea, followed by quality evaluation based on SNI parameters, including moisture content, total ash content, crude fiber content, and polyphenol content, as well as analysis of protein and caffeine levels. The experiment employed a Randomized Complete Block Design (RCBD) with two replications and 35 clones as treatments. The results revealed significant variation in quality among the tested clones. Clone I.2.85 and II.2.108 was identified as the best-performing clone, meeting SNI quality standards (moisture content, total ash, crude fiber, and polyphenols), exhibiting high protein levels, low caffeine levels, and a premium flavor profile.
THE INFLUENCE OF RETARDANTS AND SUPPLEMENTARY FERTILIZATION ON THE GROWTH AND YIELD OF INDUSTRIAL POTATO Devita Aprilia; Jajang Sauman Hamdani; Rahmat Budiarto
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3399

Abstract

The low productivity of potatoes in Indonesia is attributed to the use of low-quality seed tubers, limited agricultural land, and suboptimal cultivation practices. Therefore, the application of gibberellin-inhibiting growth regulators may serve as a strategy to improve potato productivity, including paclobutrazol and prohexadione-Ca. This study aimed to determine the effects of paclobutrazol, prohexadione-Ca, and supplementary fertilization on the growth and yield of G2 potato seed tubers of the Medians cultivar. The experiment was conducted from October 2025 to January 2026 at PT. Horti Agro Makro, Cisurupan District, Garut, West Java, located at an altitude of approximately ± 800 m asl. The experimental design used was a Split Plot Design. The first factor, assigned as the main plot, consisted of growth retardants: paclobutrazol at 100 ppm and prohexadione-Ca at 100 ppm. The second factor, assigned as the subplot, consisted of supplementary fertilizer treatments: Urea, Urea + ZA, Urea + MgSO4, and Urea + Humate NPK. The results showed a significant interaction between paclobutrazol and Urea + MgSO4 on tuber water content (76.14%). Paclobutrazol application had a significant independent effect in reducing plant height, and leaf area index, while increasing tuber weight (752.39 g). The application of Urea + MgSO4 as a supplementary fertilizer significantly reduced the plant height, while increasing the tuber weight, and specific gravity.
PRECISION-BASED OPTIMIZATION OF PLUCKING HEIGHT FOR TEA SHOOT YIELD, QUALITY, AND SUSTAINABLE SHOOT GROWTH ACROSS DIFFERENT PRUNING YEARS Gina Nur’aini Buchory; Erdiansyah Rezamela; Iftita Fitri
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3400

Abstract

Plucking management is a critical factor in maintaining tea production, shoot quality, and next generation of shoot growth. Improper plucking practices, particularly excessive low plucking, can negatively affect plant health by slowing down the shoot growth cycle, reducing the availability of maintenance leaves, and ultimately leading to decreasing shoot yield. Therefore, the need for precision-based plucking height to sustain optimal vegetative growth and yield in each plucking year is needed to be understood. One potential solution is the implementation of precise plucking height which is expected to improve shoot regeneration, maintain plant health and plucking table, and also enhance sustainable productivity in tea plantations. This study was conducted from October to November 2024 at a Tea Plantation in Bandung Regency using a split-plot randomized complete block design consisting of two factors (4×4) with 3 replications. Pruning year as the main plot consisted of 1st year (T1), 2nd year (T2), 3rd year (T3), and 4th year (T4) after pruning. The subplot was plucking height with 0 cm (K0), 1 cm (K1), 2 cm (K2), and 3 cm (K3) pad. Parameters comprised shoot yield per plot (kg), plucking points/m², pekoe shoot percentage, remaining P+1 shoot percentage, remaining P+2 shoot percentage, remaining banjhi shoot percentage and fresh shoot quality were measured. Data were analyzed using Analysis of Variance (ANOVA) (p≤0.05) and followed by Duncan’s Multiple Range Test (p≤0.05) if there were significant differences. The highest fresh shoot yield per plot was obtained from the T4K0 combination (70.77 kg plot⁻¹). The highest percentage of remaining shoots P+1 was recorded in the T4K1 treatment (29%). The minimum percentage of remaining banjhi shoot was resulted from T1K2 combination (14%). Meanwhile, fresh shoot quality was highest in the T2K1 combination (78%), followed by T2K2 (75%).
EFFECTS OF SILICA FERTILIZATION AND IRRIGATION FREQUENCY ON MUNG BEAN YIELD AND QUALITY Annisa Afifah Putri; Salsabila Putri; Fiky Yulianto Wicaksono; Yuyun Yuwariah
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3401

Abstract

Climate change and increasing water scarcity have intensified drought stress, reducing mung bean (Vigna radiata L.) yield and seed quality. Silica fertilization has gained attention as a strategy to enhance plant tolerance to water limited conditions and improve crop productivity. This study systematically reviewed the effects of silica fertilization and irrigation frequency on mung bean yield and quality using the PRISMA 2020 framework. Literature was collected from major scientific databases, and 68 eligible studies published between 2010 and 2026 were selected for qualitative synthesis. The reviewed studies consistently showed that reduced irrigation frequency decreased growth, physiological performance, yield, and grain quality. In contrast, silica fertilization improved water status, photosynthetic efficiency, antioxidant activity, nutrient uptake, and drought tolerance. Evidence from mung bean and related legume crops demonstrated that silica application enhanced pod formation, seed weight, biomass accumulation, and yield stability under water deficit conditions. The benefits of silica became more pronounced as water availability declined, indicating a complementary relationship between silica fertilization and irrigation management. Overall, integrating silica fertilization with optimized irrigation scheduling offers a promising approach to improve yield, maintain seed quality, enhance water use efficiency, and support sustainable mung bean production under drought prone environments.
OPTIMIZATION OF IBA AND ACTIVATED CHARCOAL ON IN VITRO ROOTING OF KOPYOR COCONUT Amanda Putri Viony; Susiyanti; Sulastri Isminingsih; Zahratul Millah; Kartina AM
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3402

Abstract

Kopyor coconut (Cocos nucifera L.) is a high-value commodity, but its conventional propagation is constrained by abnormal endosperm, resulting in poor germination. In vitro embryo culture on Y3 medium offers an alternative to improve propagation efficiency. This study evaluated the effects of Indole-3-Butyric Acid (IBA) and activated charcoal on in vitro growth of kopyor coconut embryos cultured on Y3 medium. The experiment used a factorial Randomized Block Design (RBD) with two factors, IBA concentrations (0, 1, 2, and 3 mg L⁻¹) and activated charcoal (0, 1, and 2 g L⁻¹), with four replications. Observed parameters included time to root emergence, explant height, and survival percentage. Data were analyzed using ANOVA followed by Duncan’s Multiple Range Test (DMRT) at a 5% significance level. Results showed that activated charcoal significantly affected time to root emergence and explant height, while IBA and its interaction with activated charcoal were not significant for all parameters. The application of 1 g L⁻¹ activated charcoal produced the fastest root emergence at 9.25 weeks after culture and achieved 100% explant survival. In conclusion, activated charcoal at 1 g L⁻¹ effectively enhances early in vitro development of kopyor coconut embryos by accelerating root emergence and improving survival, while IBA up to 3 mg L⁻¹ does not significantly affect early growth responses.
UTILIZATION OF TEA WASTE COMPOST ENRICHED MICROBES TO ENHANCE SOIL HEALTH AND TEA PLANT SUSTAINABILITY Restu Wulansari; Elia Laila Rizqiyah; Erdiansyah Rezamela; Iftita Fitri
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3403

Abstract

Tea plantations increasingly face challenges related to declining soil fertility, excessive reliance on inorganic fertilizers, and the accumulation of agro-industrial residues. This study evaluated the utilization of tea waste as a feedstock for bio-enriched compost and its effectiveness in improving soil quality and tea plant health in tea plantations of North Sumatra, Indonesia. Tea waste was composted for 45-60 days using microbial activators and subsequently enriched with beneficial microorganisms. A field efficacy trial was conducted using a factorial randomized block design with two factors: tea waste compost doses (0–4000 kg ha⁻¹ year⁻¹) and inorganic fertilizer levels (0–100% of the recommended rate). Observed parameters included tea shoot productivity and shoot ratio (plant health). The best response was achieved with the application of 1000 kg ha⁻¹ tea waste compost combined with 60% of the recommended inorganic fertilizer dose, resulting in an average 28% increase in shoot yield compared with the control. This treatment also improved peko shoot quality and enhanced production stability during dry periods. Increased soil organic matter, improved water retention, and greater microbial activity were identified as key mechanisms underlying these benefits. These findings demonstrate that tea waste compost represents a viable strategy for circular waste management and sustainable nutrient optimization in tea plantation systems, contributing to long-term soil health and resilient tea production.

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