Article Per Year (5 Year)
p-Index From 2021 - 2026
0.562
P-Index
This Author published in this journals
All Journal EUGENIA
Johannes Elie Xaveriano Rogi
Program Studi Agronomi, Fakultas Pertanian, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
PENGARUH PEMBERIAN PUPUK ORGANIK CAIR (POC) AIR KELAPA TERHADAP PERTUMBUHAN DAN HASIL TANAMAN PAKCOY (Brassica rapa L.): The Effect of Coconut Water Liquid Organic Fertilizer (POC) on the Growth and Yield of Pakcoy (Brassica rapa L.) Rian Yehezkiel Daud Lintong; Jeanne Martje Paulus; Saartje Sompotan; Johannes Elie Xaveriano Rogi; Sesilia Anita Wanget; Meity Rosadelly Rantung; 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/kfgqx213

Abstract

Efforts to increase the growth and yield of pak choy (Brassica rapa L.) plants can be done through organic fertilization, one of which is by using coconut water-based POC. This study aims to determine the effect of coconut water POC on the growth and yield of pak choy plants. This study lasted for 2 months from February to April 2025. This study was conducted at the Green House, Faculty of Agriculture, Sam Ratulangi University Manado, using a Completely Randomized Design (CRD) method with 5 treatments, namely, P₀ Control (without POC), P₁ (POC 20 ml/L water), P₂ (POC 40 ml/L water), P₃ (POC 60 ml/L water) and P₄ (POC 80 ml/L water). Each treatment was repeated 3 times so that there were 15 experimental units with each experimental unit consisting of 3 plants so that a total of 45 plants with the observed variables were plant height, number of leaves, fresh weight and root weight. Data were analyzed using ANOVA and continued with the LSD test at the 5% level with the help of Minitab software version 21. The results showed that the administration of coconut water POC significantly affected all observation parameters. The P₄ treatment (POC 80 ml/L water) produced the highest values for all parameters.   Keywords: coconut water, liquid organic fertilizer, pakcoy, Plant Growth, Plant Yield
APLIKASI PHOTOSYNTHETIC BACTERIA TERHADAP PERTUMBUHAN VEGETATIF TANAMAN NILAM (Pogostemon cablin BENTH.) Patrisia Indri Kowaas; Johannes Elie Xaveriano Rogi; Meity Rosadelly Rantung; Jeanne Martje Paulus; Jantje Pongoh; Annatje E. B. Inkiriwang
EUGENIA Vol. 31 No. 2 (2025): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.v31i2.65475

Abstract

Patchouli (Pogostemon cablin Benth.) is an essential oil–producing plant with high economic value. The vegetative stage plays a critical role in determining biomass production potential. This study evaluated the effect of Photosynthetic Bacteria (PSB) fertilizer on the vegetative growth of patchouli. The experiment was carried out in Kinalawiran Village, South Minahasa Regency, using a Randomized Block Design (RBD) with four treatments: control (no PSB), PSB 10 ml/L, PSB 20 ml/L, and PSB 30 ml/L, each replicated six times. Growth parameters observed were plant height, stem diameter, and fresh weight. Results showed that PSB application significantly improved all measured parameters. The 30 ml/L treatment produced the highest growth response; however, the linear trend observed across treatments indicated that the optimum dose had not yet been achieved within the tested range. Further studies with higher concentrations are recommended to determine the optimal PSB dosage for maximizing vegetative growth in patchouli. Keywords: Patchouli, vegetative phase, PSB, plant growth
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.
Co-Authors Annatje E. B. Inkiriwang Jantje Pongoh Jeanne Martje Paulus Langimanapa Sofia Demmassabu Meity Rosadelly Rantung Mikha Polimpung Patrisia Indri Kowaas Rian Yehezkiel Daud Lintong Saartje Sompotan Sesilia Anita Wanget Yefta Pamandungan