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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 5 Documents
 1 
Search results for , issue "Vol 25, No 3 (2019)" : 5 Documents clear
ANALISIS KANDUNGAN TIMBAL (Pb) DALAM DAUN TANAMAN DI RUANG TERBUKA HIJAU Nurmawan, W.; Ogie, Tommy B.; Kainde, R. P.
EUGENIA Vol 25, No 3 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.3.2019.31403

Abstract

Lead (Pb) is a highly toxic heavy metal that can have a negative influence on chlorophyll because most of it is accumulated by plant organs, namely leaves, stems, and roots, as well as soil around plants. This study aims to examine the Pb content in the leaves of Angsana (P1), Trembesi (P2), and Mahoni plants in the urban green spaces around UNSRAT (T1), KONI (T2) and Sparta Tikala Sport Field (T3) in Manado. Pb content testing uses the AAS (Atomic Absorption Spectrophotometery) method in the laboratory of Manado Industrial Standards Agency. This research was compiled using a Randomized Block Design (RCBD) with 2 treatment factors, namely tree species (P) and sampling locations (T). Each treatment was repeated 3 times to obtain 27 experimental units. The results showed that the treatment of tree species and sampling locations had a significant influence on lead sorption by leaves. Interaction of P3T3 treatment produced the highest lead sorption at 1.14 ppm, which was not significantly different from P3T1 (1.12 ppm), P3T2 (1.07 ppm), P2T2 (1.01 ppm), P2T3 (0.97 ppm), P2T1 (0.97 ppm), P1T3 (0.92 ppm) but significantly different from P1T2 (0.89 ppm) and P1T1 (0.87 ppm).  Overall, the results of Pb sorption are within the normal limits of Pb content in plants ranging from 0.5 to 3.0 ppm.
PENERAPAN IRIGASI HIDROPONIK SISTEM AKAR TELANJANG (Bare Root System) PADA TANAMAN KANGKUNG (Ipomea Aquatic forsk). Tulung, Ronaldo; Rumambi, David P.; Ludong, Daniel P. M.
EUGENIA Vol 25, No 3 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.3.2019.31404

Abstract

This study aimed to test the application of the Deep Flow Technique (DFT 4cm dan DFT 2cm)  and Nutrient Film Tecnique (NFT) bare root system hydroponic system on water spinach plants by calculating plan water requirements and measuring vegetative growth of water spinach plants with thickness / water level different. The results showed that the CU (Coefficient Uniformity) value was 95% in that DFT 4cm, 111,55ml of water as used, plant height and number of leaves were relatively that same as t6he other treatments with a plant mass weight of 181.28gr, with a stem meter of 12.92cm. DFT 2cm required 90.17ml of water with a plant mass weight of 160.33gr. NFT needs water as much as 106.57 ml with a plant mass weght of 153.28gr.
PENGARUH WAKTU PINDAH TANAM BIBIT SAWI DAN WAKTU APLIKASI PUPUK ORGANIK TERHADAP BOBOT SEGAR SAWI (Brassica juncea L.) Sompotan, S.; Raintung, J. S. M.; Titah, Tilda; Rantung, John L.
EUGENIA Vol 25, No 3 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.3.2019.33808

Abstract

Organic farming systems utilize organic fertilizer as the main source of nutrients for the crops. The application of organic fertilizer from animal sources, such as manure, can increase soil fertility and crop yield. This research aims to: 1) Study the effects of organic fertilizer dosage and time of application towards the fresh weight of mustard greens, and 2) determine the best application time for the maximum fresh weight of mustard greens. Factorial research with two factors was designed using a randomized block design. The first factor was dosage of organic fertilizer (A): A1 = 15 ton/ha, A2 = 20 ton/ha, A3 = 25 ton/ha, and A4 = 30 ton/ha. The second factor was the time of application (B): B1 = 10 days before planting the seeds, B2 = 15 days before planting the seeds, B3 = 20 days before planting the seeds. Every experimental unit was replicated three times, yielding 36 experimental pots. The variable observed was the fresh weight of mustard greens. Data were analyzed using ANOVA, followed by Tukey's honest significance difference test (alpha = 0.05) if significant differences were found. Results show that the interaction between dosage and time of application had significant effects on the mustard greens' leaf length, plant height, leaf count, leaf width, and fresh weight. Treatment A3B1 (25 ton/ha of organic fertilizer, applied 10 days before planting seeds) gave the heaviest weight (24,07 gram). The longer the application time, the better the effects on the plants. The application of organic fertilizer requires 10 days of incubation before the mustard greens are moved.
PENGARUH PUPUK ORGANIK KIRINYU UNTUK EFISIENSI PENGGUNAAN PUPUK UREA PADA PERTUMBUHAN TANAMAN PADI (Oryza sativa L.) Tumewu, P.; Nangoi, Ronny; Walingkas, Stanley A. F.; Porong, Vikson J.; Tulungen, A. G.; Sumayku, Bertje R. A.
EUGENIA Vol 25, No 3 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.3.2019.33863

Abstract

Conventional agriculture relies on the use of artificial chemical fertilizer, such as urea,during every planting season, causing a decrease in soil fertility. Unfertile land has a negative effect on rice production, putting strain on farmers.A replacement or complement for chemical fertilizers needs to be found; other than the negative long-term effects, increased demand for urea in the planting season can make it hard to find when farmers need it most. An organic alternative is kirinyu (Chromolaena odorata) which has high concentrations of nitrogen and also phosphorous, potassium, and other micronutrients. Kirinyu grows abundantly around rural farms and plantations and makes up a lot of local biomass. The aims of this research are to 1) Assess the interaction of kirinyu organic fertilizer dosage and urea dosage towards the growth of rice (Oryza sativa L.), and 2) determine the most efficient dosage of kirinyu and urea fertilizer for the best growth in rice. The research used a randomized block factorial design. The treatments were:Factor I (A) = Dosage of kirinyu organic fertilizer. A1 = 10 tons/ha, A2 = 20 tons/ha. Factor II (B) = Dosage of urea fertilizer. B1 = 50 kg/ha, B2 = 100 kg/ha, B3 = 100 kg/ha. Each treatment was replicated three times, resulting in 18 experiment plots. Variables observed were:height of plant and number of seedlings. Data was analyzed using analysis of variance and Least Significant Differences (LSD) at a test level of 5%. Results show that the combination of kirinyu organic fertilizer and urea fertilizer has a significant effect on plant height and number of rice seedlings.
KAJIAN TEKNIK BUDIDAYA TANAMAN CABAI (Capsicum annuum L.) KABUPATEN MINAHASA TENGGARA Polii, M. G. M.; Sondakh, T. D.; Raintung, J. S. M.; Doodoh, Beatrix; Titah, Tilda
EUGENIA Vol 25, No 3 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.3.2019.31402

Abstract

Chili is a strategic commodity with important economic value in Indonesia. The Ministry of Agriculture included chili in a special program as of 2015 to increase production. Chili as a commodity has a high impact on Indonesia’s economy, party because fluctuations in its price can influence inflation. Data from the Central Statistics Agency indicate that chili supplies decrease during the rainy season while demand increases in the months of Ramadhan, Christmas, and New Year, and in these times chili prices increase and cause inflation. To support national demand, there needs to be an increase in chili productivity. Chili plots sometimes cannot be planted year-round due to the high use of artificial chemical fertilizer with excessive dosage, thus decreasing the quality of land and quality and volume of chili crop yield. For that reason, there needs to be a study that identifies cultivation techniques for chili in the regency of Southeast Minahasa. Study results show that cultivation methods in Molompar village, Southeast Minahasa, still depends on farmers’ experiences. Field instructors have not been optimally guiding the local farmers.

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