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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 198 Documents
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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.
PENENTUAN DOSIS FORMULASI PUPUK ORGANIK UNTUK EFISIENSI PENGGUNAAN PHONSKA PADA TANAMAN JAGUNG MANIS (Zea mays sacharata Sturt.) Tulungen, A. G.; Tumewu, P.; Montolalu, M.; Rantung, John L.; Tulung, S.
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.33807

Abstract

The use of organic fertilizer provides soil with macronutrients, micronutrients, and organic acids which improve the long-term physical, chemical, and biological fertility of the soil. This research aims to: 1) Increase physical and chemical soil fertility, 2) Acquire the interaction between organic fertilizer and Ponska fertilizer dosage on sweet corn crops, 3) Acquire the most efficient dosage of PONSKA  fertilizer on sweet corn, and 4) disseminate research results through journal articles and directly to farmers.  This research will increase the efficiency of NPK Ponska chemical fertilizers by utilizing waste from around the farm and lakes to formulate organic fertilizer to apply on sweet corn crops and as a reference to teaching material. Factorial research with two factors was designed using a randomized block design. Factor I (A) = Organic fertilizer formulation, comprising of A1 = 20 ton/ha, A2 = 30 ton/ha, and A3 = 40 ton/ha.  Factor II (B) =  Phonska fertilizer,  comprising of B1 = 25 % Ponska, and B2 = 50% Ponska. Every treatment was replicated four times, yielding 24 research plots. Response variables observed were: Plant height, number of leaves, dry weight of the plant. Data were analyzed using ANOVA, followed by Tukey's honest significance difference test (alpha = 0.05) if significant differences were found. Results showed that the interaction between organic and Phonska fertilizer formulations had significant effects on plant height. A dosage of 40 ton/ha of organic fertilizer can decrease the use of phonska fertilizer by 75% based on the height of sweet corn plants.
LOLOSAN TAJUK, ALIRAN BATANG DAN INTERSEPSI PADA POHON PAKOBA (Syzigium sp.) NANTU (Palaquium obtusifolium Burck) DAN CEMPAKA (Magnolia tsiampacca) Rumagit, Novita I.; Kalangi, J. I.; Saroinsong, F. B.
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.31398

Abstract

Interception is one part of hidrology cycle which small value and sometimes ignored but interception has a large impact on certain plants. Amoun of value stem fall and through fall affected by interception. This study was conducted in Tomohon City Forest with purpose to determine magnitude of value through fall, stem fall and interception pakoba (Syzigium Sp.), nantu (Palaquium obtusifolium Burck) and cempaka (Magnolia tsiampacca). This research by using randomized group design method use 3 (tree) type of trees pakoba (Syzigium Sp.), nantu (Palaquium obtusifolium Burck) and cempaka (Magnolia tsiampacca). Each was repeated 5 (Five) times, in order to obtain 15 units of the experiment. Data were analyzed with analysis of variance and further using BNT test. The result of this research show amount of value stem fall pakoba 10,55 %, nantu 9,01 % and cempaka 7,99 %. Amount of value through fall pakoba 8,13 %, nantu 5,25 % and cempaka 2,45 %. Amount of value interception pakoba 82 %, nantu 86,31 % and cempaka 89,37 %. BNT test show interception in pakoba 82 % significant different with cempaka 89,37 % and not significant different with nantu 86,31 %. Nantu 86,31 % not significant different with cempaka 89,37 %.
LAJU RESAPAN ALIRAN PERMUKAAN OLEH LUBANG RESAPAN GEOPORI PADA LAHAN PERTANIAN PASCA PANEN Rarun, Suharti; Kalangi, J. I.; Saroinsong, F. B.
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.31399

Abstract

In the last few years, many forests in Indonesia have experienced changes in land use to agricultural land, this has implications for the emergence of environmental problems, namely an increase in surface flow that causes flooding . Geopore technology or geopore infiltration hole is a technology that can be used to reduced rainwater runoff by absorbing more volume of rainwater into the soil and can help to maintain the presence or availability of ground water. This study aims to determine the percentage of surface flow reduction by geopore infiltration holes in land-based trees, reeds and open land. This study aims to determine the volume of surface flow and the rate of infiltration of rainwater on post-harvest agricultural land. The method in this study used a was randomized block design as a data collection method which was then analyzed using descriptive analysis. The results of this study showed that the average rainfall intensity of 16.36 mm / hour obtained an average rate of recharge on post-harvest agricultural land without geopore which was 65 mm / hour and the average rate of recharge on agricultural land with geopore infiltration holes namely 148 mm / hour.
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.
Analisis Kualitas Vigin Coconut Oil (VCO) Produksi Tiga Kelapa di Kabupaten Minahasa Utara. Sumayku, Bertje R. A.; Tanor, Meity N
EUGENIA Vol 24, No 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.24.3.2018.31356

Abstract

This study aims to analyze the quality of virgin coconut oil (VCO) produced by Tiga Kelepa in North Minahasa Regency. VCO made from fresh coconut is one of the essential oils that are widely used for health. This research was conducted from March until May 2018. This research used a description method from the product of the VCO manufacture by stimulating method then continued with quality analysis in the laboratory of PT. Sucofindo and compared with the Indonesian National Standard (SNI) VCO quality. The results showed that the quality of "Vigin Coconut Oil (VCO)" "Tiga Kelapa" production in North Minahasa is better than the quality of Indonesian National Standards. The content of free fatty acids (FFA), water content, iodine number, color and aroma are suitable with SNI VCO. The composition of VCO fatty acids is dominated by Kaprilic Acid, Capric Acid, and Lauric Acid which are higher in content than SNI VCO. Lauric acid acid gives an analysis value of 57.78% Keywords: Three Coconut Production, Quality, Virgin coconut oil (VCO)
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.
INVENTARISASI POLA AGROFORESTRI DI DESA TONSEA LAMA KECAMATAN TONDANO UTARA KABUPATEN MINAHASA Mataputung, Sifan M.; Nurmawan, W.; Sumakud, Maria Y. M. A
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.31400

Abstract

Agroforestry is a land management system used in combination with agricultural production that includes fruit trees and pastoral practices with forestry plants. One of the most efficient ways to solve pattern-related agroforestry problems is by using a central plant species that will play a role in multiple land uses. Inventory is the practice of listing plant and animal species in the forest, as well as potential resources. This study was done in Tonsea Lama village, North Tondano district, Minahasa regency, in the months of April to May 2018, with the purpose of making an inventory of agroforestry land use patterns. Result of this study are expected to provide actionable data for future studies on inventory of agroforestry patterns, as well as information for planning agroforestry patterns and land use. Data collection used purposive sampling methods. Agroforestry in Tonsea Lama village was found to follow the following patterns: 13 gardens with agrosilviculture patterns (86,67%) and 2 gardens with agrosilvopastoral patterns (13,33%). There were 74 different types of plants in the agroforestry systems.
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.
KANDUNGAN UNSUR HARA PADA SERASAH DAUN SEGAR POHON (MAHONI, NANTU DAN MATOA) Wowor, Andre E.; Thomas, A.; Rombang, J. A.
EUGENIA Vol 25, No 1 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.1.2019.31395

Abstract

Plant life cycle requires adequate nutrient content in the planting media environment. Nutrients are naturally influenced by cyclical nutrition itself. Plants in the form of trees play a role in the synthesis of nutrients themselves. Trees play a role in absorbing nutrients in the soil and releasing nutrients through dead or harvested tissue, plant tissues that are most often canceled or killed because the weather is leaves. The nutritional needs of trees are different so the absorption, use and management of nutrients in trees is also different. The purpose of this study is to see the differences in species of Mahogany, Nantu and Matoa trees, which has the potential to contribute to the availability of nutrients. The method used in the study was a completely randomized design (CRD) with three replications. Analysis of nutrient N, P and K was carried out in the laboratory using extraction of perhydrol by wet ingestion of H2SO4+H2O2. The results of the research obtained, that the fresh leaf litter of the nantu tree is the most potential as a nutrient-contributing tree to the surface soil.

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