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All Journal EUGENIA
Annatje E. B. Inkiriwang
Program Studi Agronomi, Fakultas Pertanian, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry

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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 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.
Co-Authors Antje Grace Tulungen Ezra Mantiri Jantje Pongoh Jeane S. M. Raintung Jeanne Martje Paulus Johannes Elie Xaveriano Rogi Meity Rosadelly Rantung Patrisia Indri Kowaas Paula C. H. Supit Pemmy Tumewu