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Jantje Pongoh
Program Studi Agronomi, Fakultas Pertanian, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry

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PERTUMBUHAN TANAMAN CAISIM (Brassica chinensis var. Parachinensis) DENGAN PEMBERIAN VARIASI DOSIS PUPUK KANDANG AYAM Jesica Berdame; Jantje Pongoh; Maria G.M. Polii; Meity Rantung; Paula Supit; Saartje Sompotan
EUGENIA Vol. 30 No. 1 (2024): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.v30i1.57411

Abstract

Caisim (Brassica chinensis var. Parachinensis) is a type of vegetable that is in great demand by the public, because it contains many nutrients that humans need. Using chicken manure on caisim plants to provide nutrients for plant survival and growth. This research aims to see and determine the growth response of caisim plants (Brassica chinensis var. Parachinensis) by administering varying doses of chicken manure. This research was carried out in Sea Village, Pineleng District, Minahasa North Sulawesi from January to February 2023.This research used a completely randomized design (CRD) method with varying doses of chicken manure, with chicken manure needs are : Without treatment (A0), 312,5 grams/ polybag (A1), 625 grams/ polybag (A2), 937,5 grams/ polybag (A3). Data analysis from the observations was analyzed using Analysis of Variance (ANOVA) and continued with the Least Significant Difference Test (LSD) with unequal replications.From the research result, the caisim plant lacks light in the plant growth process. The hypothesis was also rejected because varying doses of chicken manure had no effect on the growth and development of the caisim plant. It is recommended to choose an ideal research location for succes in the cultivation process, the importance of the need for sunlight in plant growth to influence photomorphogenesis, namely plant growth and development which is directly controlled by sunlight. Keywords : caisim, dosages of chicken manure
PENGARUH Trichoderma sp. TERHADAP PERTUMBUHAN VEGETATIF TANAMAN KRISAN (Chrysanthemum morifolium R.) VAR. JAYANI Marsela Deana Ratu; Bertje R.A. Sumayku; Ventje Pangemanan; Jantje Pongoh; Antje Grace Tulungen; Yefta Pamandungan
EUGENIA Vol. 30 No. 1 (2024): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.v30i1.57414

Abstract

Chrysanthemum (Chrysanthemum morifolium) is the most popular plant in Indonesia, because chrysanthemum flowers have their own advantages in terms of the beauty of their flower colors. The problem with chrysanthemum shoot cuttings is that the roots are not dense enough so that the chrysanthemum plant cannot grow upright. This research aims to determine the effect of Trichoderma sp. on vegetative growth of chrysanthemum plants. This research was carried out for 5 weeks, starting from July to August 2023 at the Green House of the Seed, Nursery and Agrotourism Center, Tomohon City. The method that will be used in this research is a Completely Randomized Design (CRD), with 5 treatments: P0 = No Trichoderma sp. (Control), P1 = Thricoderma sp. 25 gr/l, P2 = Thricoderma sp. 50 gr/l, P3 = Thricoderma sp. 75 gr/l, P4 = Thricoderma sp. 100 gr/l. All treatments were repeated 5 times so that there were 25 units. The data obtained based on observations in this research will be analyzed using Analysis of Variance (ANOVA). The variables observed were: number of leaves, plant height, number of roots, root length. The results of the study showed that the use of Trichoderma was not significantly different from the variables number of leaves, plant height and root length. Giving trichoderma only had a significant effect on the number of roots (giving 50g trichoderma/liter of water). Keywords: trichoderma sp., chrysanthemum cuttings, growth, results
PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS TANAMAN KANGKUNG DARAT (Ipomoea reptans Poir) Efirifika Mangintiku; Jantje Pongoh; Meity Rosadelly Rantung; Johannes E.X. Rogi; Stella Maria T. Tulung; Stanley A.F. Walingkas
EUGENIA Vol. 31 No. 1 (2025): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.v31i1.61198

Abstract

Land spinach (Ipomoea reptans Poir) is a type of horticultura plant that is very popular in Indonesia because it has a savory taste and nutriens such as vitamins A, B and C as well as various minerals, especially iron, which are useful for supporting growth and maintaining health as well as maintaining the health of the human body. one of the important aspects in cultivanting land kale is monitoring the growth of the plant and understanding the stages of water spinach development from the beginning of planting to harvest. This research was carried out from April to May 2024 Environment VI, Paal Dua Village, Paal Dua District, North Sulawesi Province. The research used a Randomized Block Design (RAK) with 5 levels of treatment namely Bangkok Variety, Bisi Variety, Bika Variety, Serimpi Variety and Rajawali Variety which was carried out in 4 replications in the form of  plots (beds). The results of the research showed that the growth and production of land kale plants BangkokVariety, Bisi Variety, Bika Variety, Serimpi Variety and Rajawali Variety were not significantly different. Keywords: growth and production, land spinach plant varieties
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
KARAKTERISTIK PERTUMBUHAN TIGA VARIETAS TANAMAN CABAI RAWIT (Capsicum frutescens L): Growth Characteristics  of Tree Varietis of Chili Papper (Capsicum frutescens L) Thesalonika V.F. Tulandi; Jantje Pongoh; Annatje E.B. Inkiriwang; Stanley A.F. Walingkas; Paula C.H. Supit; Stella M.T. Tulung
EUGENIA Vol. 32 No. 1 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/n7ejp579

Abstract

ABSTRACT Chili peppers are a highly sought-after horticultural commodity, ranking second in market demand after red chilies. Consequently, many farmers opt to cultivate chili peppers to boost their income. To achieve optimal results, farmers often employ superior varieties that offer numerous benefits, including enhanced productivity, pest and disease resistance, shorter maturation periods, and improved shelf life. This research was designed to investigate the growth characteristics of various chili pepper varieties and determine which variety demonstrates the most favorable growth traits. The study was carried out over four months, spanning from October 2023 to February 2024, at Senduk Village.This research design used a Randomized Block Design (RAK) with three treatments and nine replications was utilized. Plant height, stem diameter, flowering age, and harvest age were the variables observed. The findings revealed distinct differences in growth characteristics among the three varieties tested. The Mahameru variety exhibited favorable performance in plant height and stem diameter. In contrast, the Dewata 43 variety demonstrated the earliest flowering time. Keywords : Chili Papper, Superior Varieties, characteristic, horticulture, production  
KARAKTERISTIK BEBERAPA VARIETAS KANGKUNG DARAT (Ipomoea reptans Poir): Characteristics of Several Varieties of Upland Water Spinach (Ipomoea reptans Poir) Ivana Manopo; Jantje Pongoh; Annatje E B Inkiriwang; Edy Fredy Lengkong; Sesilia Anita Wanget; Langimanapa Sofia Demmassabu
EUGENIA Vol. 32 No. 1 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/07cs7d30

Abstract

ABSTRACT Upland water spinach (Ipomoea reptans, Poir) is a widely consumed leafy vegetable due to its good nutritional content, rapid growth, and ease of cultivation; however, its productivity often varies depending on the characteristics of the varieties used. This study aimed to determine the growth characteristics of five upland water spinach varieties, namely Bisi, Bangkok LP-1, Rajawali, Serimpi, and Bika. The research was conducted in Kalasey Satu Village, Mandolang District, Minahasa Regency from June to July 2025 using a Randomized Block Design (RBD) with five treatments and three replications, totaling 15 experimental units. Observations were carried out at 25, 30, and 35 days after planting (DAP) on plant height, number of leaves, number of branches, stem diameter, and fresh weight. The results showed no significant differences among varieties at 25 and 30 DAP, while significant differences occurred at 35 DAP. The Bika variety exhibited the best growth performance with an average plant height of 49.56 cm, 57.11 leaves, 8.78 branches, 8.52 mm stem diameter, and 48.33 g fresh weight, followed by Serimpi which also showed relatively high vegetative growth. The Bisi variety had a larger stem diameter but lower leaf and branch numbers, while Bangkok LP-1 and Rajawali displayed lower overall growth and yield. Based on these results, the Bika variety is recommended for cultivation due to its superior growth characteristics, and further studies are suggested to evaluate nutritional quality and determine optimal harvest timing to ensure both high yield and desirable consumption quality. Keywords: land spinach, varieties, characteristics, water, horticulture
PENGARUH MEDIA TANAM TERHADAP PERTUMBUHAN DAN HASIL TANAMAN SAWI HIJAU (Brassica juncea L.): The Effect of Growing Media on The Growth and Yield of Mustard Greens (Brassica juncea L.) Angelica Sono; Langimanapa Sofia Demmassabu; Pemmy Tumewu; Jantje Pongoh; Jeanne Martje Paulus; Stella Maria Theresia Tulung
EUGENIA Vol. 32 No. 2 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/ffjszn09

Abstract

Growing media are one of the main components in plant cultivation, both conventional and modern, functioning as a medium for root growth and development, as well as providing nutrients, water, and air required for plant metabolism. This study aimed to determine the effect of growing media and to identify the best growing medium for the growth and yield of green mustard (Brassica juncea L.). This study was conducted in Kakaskasen Dua Village, North Tomohon District, Tomohon City, at an altitude of 800 meters above sea level. The research was carried out from October to December 2025 with a single-factor Completely Randomized Design (CRD) with five growing media treatments, namely soil (M0), soil : chicken manure (1:1) (M1), soil : chicken manure : rice husk charcoal (2:2:1) (M2), soil : rice husk charcoal (1:1) (M3), and soil : chicken manure : rice husk : rice husk charcoal (1:1:1:1) (M4), each replicated five times. The observed variables included plant height, number of leaves, and fresh weight of the plant. Data were analyzed using analysis of variance (ANOVA), followed by the Least Significant Difference (LSD) test at the 5% level. The results showed that treatment M2 produced the best growth (plant height of 44.72 cm and number of leaves of 16.60) as well as the highest fresh weight yield of green mustard. Keywords: growing media, growth, mustard greens, rice husk charcoal, yield
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
Co-Authors Angelica Sono Annatje E B Inkiriwang Annatje E. B. Inkiriwang Annatje E.B. Inkiriwang Antje Grace Tulungen Bertje R.A. Sumayku Edy Fredy Lengkong Efirifika Mangintiku Ivana Manopo Jeane Sukarni Marhaeni Raintung Jeanne Martje Paulus Jesica Berdame Johannes E.X. Rogi Johannes Elie Xaveriano Rogi Langimanapa Sofia Demmassabu Maria G.M. Polii Marsela Deana Ratu Meity Rantung Meity Rosadelly Rantung Patrisia Indri Kowaas Paula C.H. Supit Paula Supit Pemmy Tumewu Saartje Sompotan Sesilia Anita Wanget Stanley A.F. Walingkas Stanley Adrian F. Walingkas Stella M.T. Tulung Stella Maria T. Tulung Stella Maria Theresia Tulung Thesalonika V.F. Tulandi Ventje Pangemanan Yefta Pamandungan Yesika Woi