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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
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Search results for , issue "Vol 25, No 2 (2019)" : 5 Documents clear
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.
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.
APLIKASI MULSA PLASTIK DAN PUPUK KOMPOS PADA PERTANAMAN WORTEL DI KECAMATAN TOMOHON TIMUR KOTA TOMOHON Kamagi, Y. E. B.; Supit, Joice M. J.; Kaunang, Djoni
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.31401

Abstract

Research conducted in the field aims to obtain data and information about: 1). Organic carrot products; 2). The best combination of treatments for carrot production; and 3). Some physical properties of the soil are a result of treatment.  The things observed include the main data, namely: bulk density, moisture content, soil permeability and production of carrots and additional data, namely: organic C, N, P, K. and pH in soil and compost, soil texture, rainfall, temperature and altitude.  The research method is a 2-factor randomized block design with 3 replications. The first treatment is plastic mulch with two levels of treatment, namely: 1). Plants with plastic mulch (0) and 2). Plants without plastic mulch (1). The second treatment is compost with three levels of doses, namely: 1). 0 tons/ha; 2). 15 tons/ha; and 3). 30 tons/ha. The results showed that the use of plastic mulch and compost 15 tons/ha gave higher production, which was 2.93 kg perplot.

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