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INDONESIA
EUGENIA
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
The aims of this journal is to provide a venue for academicians, researchers and practitioners for publishing the original research articles or review articles. The scope of the articles published in this journal deal with a broad range of topics, including: Agronomi, Protection, Soil, Forestry, Agroecotecnology.
Arjuna Subject : -
Articles 225 Documents
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ANALISIS FISIKOKIMIA KOMPOS DAUN KERING DAN LIMBAH SAYURAN MELALUI FERMENTASI MOL BONGGOL PISANG GOROHO DI DESA PULISAN KABUPATEN MINAHASA UTARA: Physical and Chemical Analysis of Dry Leaf Compost and Vegetable Waste through Fermentation of Goroho Banana Stems in Pulisan Village, North Minahasa Regency Eka Manalu; Adeleyda M.W. Lumingkewas; Selvie Tumbelaka; Jemmy Najoan; Diane D. Pioh; Sofia Wantasen
EUGENIA Vol. 32 No. 2 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/bc5gw564

Abstract

This study aims to analyze the physical and chemical properties of compost produced from a mixture of dry leaves and vegetable waste through fermentation of Local Microorganisms (MOL) from goroho banana stems. The study was conducted in October–December 2025 with two main treatments, namely the addition of 30 ml, 60 ml, and 90 ml of MOL to a mixture of 1 kg of dry leaves and 2 kg of vegetable waste, the compost analyzed was a compost that had a faster composting time with a crumbly texture and a blackish brown color. The parameters observed included composting time, texture, color, and the content of macronutrients nitrogen (N), phosphorus (P), and potassium (K). The research data will be analyzed using descriptive statistics, the test results are presented in tabular form. The results showed that the 90 ml MOL treatment produced the fastest composting time, which was 25 days, while the 60 ml treatment required 30 days. Both treatments produced compost with a crumbly texture and a blackish brown color, indicating that the compost was mature. The nutrient content of the compost in the 60 ml MOL treatment was N 0.49%, P 0.06%, and K 0.54%, while in the 90 ml MOL treatment it was N 0.42%, P 0.03%, and K 0.55%. Keywords: compost, dry leaf, fermentation, vegetable, waste
PENGARUH NAUNGAN TERHADAP PERKECAMBAHAN DAN HASIL TANAMAN KANGKUNG DARAT (Ipomoea reptans Poir.): Effect of Shading on the Germination and Yield of Upland Water Spinach (Ipomoea reptans Poir.) Yesika Woi; Stanley Adrian F. Walingkas; Stella Maria Theresia Tulung; Jantje Pongoh; Jeane Sukarni Marhaeni Raintung; Antje Grace Tulungen
EUGENIA Vol. 32 No. 2 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/tmg2j937

Abstract

Upland water spinach (Ipomoea reptans Poir.) is a leafy vegetable with high nutritional value and rapid growth, but its productivity is strongly influenced by light intensity. Water spinach is a plant species characterized by a rapid growth rate, allowing it to be harvested approximately 25 to 30 days after sowing. Light is a crucial factor influencing the rate of photosynthesis in chlorophyll-containing plants and affecting the physiological condition of plant tissues.This study aimed to evaluate the effect of shading levels on seed germination and yield of upland water spinach. The research was conducted from August to September 2025 in Kalasey Satu Village, Minahasa Regency, using a Randomized Block Design with four shading treatments: 0%, 30%, 60%, and 90%. Observed parameters included seed viability and vigor, as well as plant growth and yield components. The results showed that all treatments produced germination percentages above 90%, with the highest viability and vigor obtained under 30% shading. Increased shading promoted plant height but reduced the number of leaves, stem diameter, and fresh weight. The no-shading treatment resulted in the highest yield. Therefore, upland water spinach cultivation is recommended under open-field conditions or light shading up to 30% to achieve optimal growth and maximum yield. Keywords: germination, light, shading, upland water spinach, yield
Respons Pertumbuhan dan Hasil Tanaman Bayam Merah (Amaranthus tricolor L.) Terhadap Pemberian Pupuk Organik Cair (POC) Air Kelapa dengan Frekuensi Berbeda: Growth Response and Yield of Red Amaranth (Amaranthus tricolor L.) to the Application of Coconut Water-Based Liquid Organic Fertilizer with Different Frequencies Eriko Kolompoy; Langimanapa Sofia Demmassabu; Stella M.T. Tulung; Stanley Adrian F. Walingkas; Maria Goretti Meyti Polii; Saartje Sompotan; Yefta Pamandungan
EUGENIA Vol. 31 No. 3 (2025): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/bk4rjk88

Abstract

Accurate and environmentally friendly fertilization is essential to optimize the growth of vegetable crops. This study aims to examine the effects of coconut water-based Liquid Organic Fertilizer (LOF) on the growth and yield of red amaranth (Amaranthus tricolor L.) under different application frequencies. The experiment was conducted from February to April 2025 at the Greenhouse of the Faculty of Agriculture, Sam Ratulangi University, Manado. A Completely Randomized Design (CRD) was used with four treatments: F0 (control/no LOF), F1 (LOF application once per week), F2 (twice per week), and F3 (three times per week), with each treatment receiving 250 ml per liter of water. Each treatment was replicated four times for a total of 16 experimental units and 32 plants. Observed parameters included plant height, number of leaves, and fresh weight. The results showed that application of coconut water LOF once a week (F1) significantly improved plant height, leaf number, and biomass compared to the control. However, increasing frequency beyond once a week (F2 and F3) did not lead to significant improvements, suggesting that one weekly application is sufficient and efficient. Therefore, coconut water-based LOF is recommended as an effective, eco-friendly alternative for red amaranth cultivation. Keywords: Red amaranth, Amaranthus tricolor L., liquid organic fertilizer, coconut water, frequency, plant growth
PENGARUH PEMBERIAN POC BONGGOL PISANG TERHADAP HASIL TANAMAN CAISIM (Brassica rapa subsp parachinensis): THE EFFECT OF GIVING BANANA CORN POC ON THE YIELD OF CAISIM PLANT (Brassica rapa subsp parachinensis) Ezra Mantiri; Antje Grace Tulungen; Pemmy Tumewu; Paula C. H. Supit; Annatje E. B. Inkiriwang; Jeane S. M. Raintung
EUGENIA Vol. 31 No. 3 (2025): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/5tpb5720

Abstract

Caisim (Brassica rapa L.) is a horticultural commodity that plays an important role in supporting the Indonesian economy. To increase plant growth and yield, the use of fertilizer is essential. However, excessive dependence on chemical fertilizers can damage soil structure and fertility. One environmentally friendly alternative is the use of liquid organic fertilizer (POC) from agricultural waste materials, such as banana stumps, which are known to contain important nutrients such as nitrogen (N), phosphorus (P), and potassium (K). This study aims to determine the effect of applying POC from banana stumps on caisim plant yield and to determine the best concentration that can provide optimal results. The study was conducted for three months, from January to March 2025, at the Paslaten 2 plantation, East Tomohon District, Tomohon City, using a Completely Randomized Design (CRD) with six treatments and five replications. Data were analyzed using analysis of variance (ANOVA) and continued with a 5% LSD test if there was a significant effect. Observed variables included plant height, number of leaves, and plant fresh weight. The results of the study showed that liquid organic fertilizer from banana stems had a significant effect on the number of leaves and fresh weight, but not on plant height.                                                  Keywords : Caisim; Brassica rapa L.; Banana stump; Liquid organic fertilizer; Plant growth and yield.
PENGARUH PENGGUNAAN EKSTRAK BAWANG PUTIH (Allium sativum L.) SEBAGAI ZPT ALAMI PADA PERAKARAN STEK PUCUK KRISAN (Chrysanthemum morifolium R.): The Effect of Garlic Extract (Allium sativum L.) as a Natural Plant Growth Regulator on the Rooting of Chrysanthemum (Chrysanthemum morifolium R.) Shoot Cuttings Mikha Polimpung; Yefta Pamandungan; Saartje Sompotan; Johannes Elie Xaveriano Rogi; Jeanne Martje Paulus; Langimanapa Sofia Demmassabu
EUGENIA Vol. 31 No. 3 (2025): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/vwytgv09

Abstract

Chrysanthemum is an ornamental plant prepared for export by the City of Tomohon, but the availability of seedlings remains limited. Vegetative propagation with the aid of garlic extract as a natural growth regulator (PGR) can be a solution to accelerate the rooting of shoot cuttings.This study aimed to determine the effect of using garlic extract (Allium sativum L.) and to identify the best concentration of garlic extract as a natural PGR on the root development of chrysanthemum shoot cuttings (Chrysanthemum morifolium R.). The research was conducted in September 2024 at the Screen House of the UPTD Seed Breeding and Agrotourism Show Window, Tomohon City. The study used a Completely Randomized Design (CRD) with five levels of garlic extract concentration treatments: P0 (0% garlic extract + 100% sterile water), P1 (25% garlic extract + 75% sterile water), P2 (50% garlic extract + 50% sterile water), P3 (75% garlic extract + 25% sterile water), P4 (100% garlic extract + 0% sterile water). Each treatment was replicated three times, with three cuttings per experimental unit, resulting in a total of 45 cuttings. The observation data were analyzed using ANOVA and further tested with the 5% Least Significant Difference (LSD) test. The results showed that garlic extract had an effect on the root length of chrysanthemum shoot cuttings and provided protection against pest and disease attacks. Keywords: Garlic extract; Natural PGR; Shoot cuttings; Root growth; Chrysanthemum.

Page 23 of 23 | Total Record : 225

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