Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

International Journal of Agriculture System

ijas
Website

Published by Universitas Hasanuddin

ISSN : 23379782 EISSN : 25806815 DOI : http://dx.doi.org/10.20956/ijas.v5i2.1236

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

International Journal of Agriculture System (Int. J. Agr. Syst.- IJAS) is published by Hasanuddin University (UNHAS) twice a year in June and December. This journal is an academic, citation indexed, and blind peer-reviewed journal. It covers original research articles, short notes and communications, reviews (including book), concepts, commentaries, and letters on a diverse topic related to agricultural systems including forestry, fishery/marine, and animal sciences. The aims of this journal are to provide a venue for academicians, researchers, and practitioners to share/discuss theories, views, research results, on issues related to the science, engineering and technology, and humanities in agriculture development, management, and issues in agricultural systems, particularly in the tropics. However, any other articles related to non-tropical agricultural systems are also welcome.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)

Articles 140 Documents

7 8 9 10 11

The Poverty Reality of Coastal and Agriculture: How Severe the Seaweed Farmers and Cocoa Smallholders Are? Muhammad Arsyad; Andi Nuddin; Muhammad Yusri Zamhuri; Syarifuddin Yusuf
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

This paper examines rural coastal-agricultural poverty by extracting and comparing poverty causal of seaweed farmer and cocoa smallholder households as a long standing issue in developing countries. The research employed (1) Foster-Greer-Torbecke (FGT) poverty indices for describing poverty situation, (2) Regression Analysis for extracting effects of explanatory variables on Poverty, and (3) Paired-Samples T Test to evaluate income differences. Some important findings are; (1) the degree of poverty between Seaweed Farmers and Cocoa Smallholders is significantly different, meaning they have a differentiation in income structure indicating the causes of poverty are different. FGT indices reveal that the depth of poverty in seaweed farmers household is, however, severer than cocoa smallholders. In broad sense, this leads to argue that rural coastal poverty is truly severer than rural agriculture poverty; (2) the orientation of coffee, cashew-nut and livestock productions in agricultural economic activity is strong and directly associated with the poverty of cocoa smallholders. Meanwhile, the orientation of seaweed production in economic activity is strong and directly associated with the poverty of seaweed farmers. These imply that, encouraging coffee, cashew-nut and livestock productions for cocoa smallholders and seaweed production for seaweed farmers by improving access to primary input/seeds in particular (for local government policy), can be strongly expected to reduce poverty directly; (3) there are also common factors responsible for the poverty that requiring general policy options (national government). The options are expanding cultivated land area for cocoa smallholders and stretching length area for seaweed farmers, providing transfer-source income, and stepping up agriculture/aquaculture & nonagriculture extensions (technology, market and input information) can also help poverty reduction efforts.

Effect of Wetland Degradation and Conversion on Carbon Stock: The Case of Tekuma Wetland, Lake Tana Sub-Basin, Ethiopia Yohannes Afework Kassa; Belayneh Ayele Anteneh; Temesgen Tilahun Teshome
International Journal of Agriculture System VOLUME 3 ISSUE 2, DECEMBER 2015
Publisher : Hasanuddin University

Wetlands are considered as one of the major carbon sinkers that have significant positive effect on reducing the impact of climate change. However, the contribution of wetland to climate change mitigation through carbon sequestration is not well understood by the public. Many developed and developing countries signed in and supported the inclusion of agriculture and wetland projects in the Kyoto Protocol. But Ethiopian government has not yet tried to take advantage of this opportunity and start negotiations to use conservation and improvement of wetland’s carbon sequestration potential in the country to obtain carbon funds as an economic incentive for the communities involved. With this background, this research was designed to carry out an in-depth study on the impact of wetland degradation and conversion on carbon sequestration potential in Ethiopia. To meet the stated objectives stratified sampling techniques were used to select sampling sites from the wetland areas having varying wetland degradation level. For the determination of carbon levels in each area replicates of plant and soil samples were collected. The plant organic matter was determined using a loss-on-ignition method and then converted to carbon stock. Carbon stock and bulk density of the sampled soil was determined using Walkely-Black oxidation and gravimetric methods, respectively. ANOVA and mean separation were computed to indicate whether there is significant difference in carbon stock due to wetland degradation. The research findings showed significant difference (P<0.05) of carbon storage with different wetland degradation levels. Carbon stock in the soil was on average 24 times higher than carbon stock in plants in each respective wetland area having varying degradation level. The intact wetland was able to sequester579 t/ha of CO2as compared to converted farmlands and grazing lands that had only 230 and 295 t/ha of CO2, respectively. The result showed that by protecting wetlands more than double carbon could be stored as compared to grazing and farmlands. Thus, it is recommended that special attention should be given to minimize the conversion of wetlands and maximize their benefits through carbon funding.

Coastal Community Welfare Improvement through Optimization of Integrated Pond Farming Management in Indonesia Alimudin Laapo; Dafina Howara
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

The lack of tenure and limited production factors causing coastal communities always be trapped on the circle of poverty, or far from prosperous. The research objective is to optimize the use of seaweed production factors that integrated with milkfish to improve the welfare of coastal communities in Indonesia. Data analysis employed Multiple Goal Programming methods. The results showed that the average of pond tenure by farmers covering 5,1 Ha with seaweed production 13,191 tons, and profits IDR76,347,700.0 per year (1USD equal to 13,000IDR). The maintenance costs of pond is the kind of production factor that limited availability, while production factors seeds, seedlings, fertilizers, and pesticides, are relatively available to farmers. Optimization results the integrated management of pond show the maximum revenue is achieved IDR1,089.89 million, labor employment 72 people, and target of seaweed production reached 188.65 tons. This means that the welfare of the farmers can be improved through the expansion of pond, and the addition of the production factor, especially capital and fertilizer.

Nutritional Value of Putak: Apparent Metabolisable Energy, and Growth Performance Catootjie L. Nalle; Marlin R.K. Yowi; Defrys R. Tulle
International Journal of Agriculture System VOLUME 5 ISSUE 1, JUNE 2017
Publisher : Hasanuddin University

Two experiments were conducted to evaluate nutritional value of putak for broilers. Experiment 1. The apparent metabolisable energy of raw and fermented putak were determined. The experimental design used was completely randomized design with three treatments and four replicates. Total of 64 broilers were randomly distributed to 16 pens. A maize-soybean meal basal diet was formulated and three assay diets were then developed by substituting putak (raw, and fermented, 250 g kg-1, w/w), and maize (500 g kg-1, w/w) of the basal diet. Even though the AME and AMEn values of fermented putak were comparable to that of raw putak and maize, but it was slightly higher than that of raw putak. Experiment 2. Using the AME value of raw putak obtained in Experiment 1, five treatment diets containing 0 to 200 g kg-1 putak were formulated. The body weight gain of broilers fed 150 - 200 g kg-1-1 putak was higher to that of control diet, but it was similar to those fed 50-100 g kg-1 putak. No differences were found in FCR and mortality rate. Feed intake of broilers fed diets containing putak was higher than that of control diet. In conclusion, the AME and AMEn values of putak, fermented putak, and maize were comparable. Putak can be included in broiler diets up to 200 g kg-1 without detrimental effects.

Local Action for Realizing Sustainable Society: A Survey of Japanese "Futurecity" Initiative Marina Takeyasu; Haisong Nie; Dawei Gao; Chuangbin Chen
International Journal of Agriculture System VOLUME 6 ISSUE 2, DECEMBER 2018
Publisher : Hasanuddin University

To convert a society to a sustainable system, attempts are required not only at international and governmental levels, but also at regional levels. It is necessary to challenge multiple issues through cooperation among various actors, such as national governments, local governments, private enterprises and residents. In Japan, one of the initiatives to achieve “the sustainable” at regional level is the “FutureCity” initiative. This is a part of National Strategic Projects in “New Growth Strategy”, which Japanese government introduced in 2010. The purpose of the “Futurecity” initiative is to create the capacity in cities to deal with environmental issues and problems of aging society, as well as establishing sustainable socioeconomic system with environmental aspects, social aspects and economic aspects. Japanese government selected, as the “FutureCity”, the five cities (Yokohama city, Shimokawa town, Kashiwa city, Toyama city and Kitakyusyu city) for making pioneering effort on these challenges, and the six cities that were hit by the Great East Japan Earthquake and great Tsunami in 2011. This “Future city” is expected to provide model solution of human common issues as a forerunner. The object of this research is to define the current situations and problems of the “FutureCity” initiative, through a case study on Yokohama city in Kanagawa prefecture, which is characterized as a big city in Japan. Here, we examined how Yokohama city is tackling the environmental issues and problems of aging society as the “FutureCity” and what problems it has in maintaining their initiative itself as a local government. In addition, we considered how, at international level, Japanese “FutureCity” initiative can contribute to realizing sustainable society

Native Mycorrhizal Fungi in Land Contaminated Cr, Co and Cu Muhammad Akhsan Akib; Andi Nuddin; Retno Prayudyaningsih; Syatrawati Syatrawati; Henny Setiawaty
International Journal of Agriculture System VOLUME 7 ISSUE 2, DECEMBER 2019
Publisher : Hasanuddin University

Mycorrhizal fungi that are capable of adapting and resistant to heavy metal contaminated environments have received special attention for phytorhizoremediation researchers. The aim of the study was to explore native mycorrhizal fungi from areas contaminated with heavy metals to be used as starter biological agents in the phytorhizoremediation program. This research was carried out in two phases, i.e. rhizosphere sampling of Polypodium glycyrrhiza, Sumasang sp (local name) and Spathoglottis plicata at coordinates 2O31'57,6"S and 121O22'50,7"E. Rhizosphere of Chromolaena odorata, Melastama affine and Nephrolepis exaltata at coordinates 2O31'53,5"S and 121O22'35,4"E, Sorowako, Indonesia; While the other phase is isolating and identifying mycorrhizal spores in the Microbiology Laboratory, Research and Development Center for Environment and Forestry in Makassar, Indonesia. The results showed that be discovered three genus of mycorrhizal fungi were able to adapt and resistant in areas contaminated with Cr, Co, and Cu, i.e. 44.44% to 75.86% Acaulospora sp; 9.52% to 44.44% Gigaspora sp, and 3.38% to 19.05% Glomus sp. which could be used as source of inoculum in Phyto-rhizoremediation program. We recommend using native mycorrhizal fungi combined with endemic plant of location to rehabilitation heavy metal contaminated soils.

Analysis of Trans Fatty Acid Content and Viscosity of the Repeteadly Used Frying Oil Andi Abriana; Meta Mahendradatta; Natsir Djide; Zainal Zainal
International Journal of Agriculture System VOLUME 1 ISSUE 1, JUNE 2013
Publisher : Hasanuddin University

The physicochemical properties of the repeatedly used frying oil were subjected to changes at frying temperature of 180oC and frying time of 10 minutes with five times frying repetitions. The changes included the formation of trans fatty acids and increased viscosity. The trans fatty acid content was analyzed by gas chromatography (GC) and the viscosity by “Brookfield DV-E Viscometer”. The trans fatty acid content and the viscosity of the repeatedly used frying oil increased with the number of repeated uses and the trans fatty acid content increased with the viscosity. The higher the trans fatty acid, the higher the viscosity of the frying oil. The increased trans fatty acid content and viscosity indicated that a damage had occurred in the oil.

Analysis of the Effect of Climate Change on Rice Production in Nigeria Opeyemi Gbenga; Opaluwa Haruna Ibrahim; Olowogbayi Jonathan Ayodele
International Journal of Agriculture System VOLUME 8 ISSUE 2, DECEMBER 2020
Publisher : Hasanuddin University

The Nigerian economy largely depends on agriculture which is vulnerable to unfavorable climatic conditions. Consequently, rice is a very important staple crop, widely cultivated and consume by millions of people in the country. Nigerian government policy heavily protects rice in order to stimulate it local production. There is still scanty empirical evidence on the effect of climate change on rice production in Nigeria. This study was carried out to fill this gap. This study specifically examined the effect of climate change on rice output in Nigeria. This study utilized climate data (rainfall and temperature) from Nigerian Meteorological Center, Carbon dioxide data from FAOSTAT, and information on the country’s` milled rice from USDA (1970-2016). The analytical tools employed in the data analysis were Descriptive, Trend analysis, Unit root test, Co-integration and Regression model. Findings of the study revealed that there is variation in the trend of the climatic factors and also variation in rice output over the period of study. The result also shows that that annual rainfall, and temperature contributes significantly to rice output in Nigeria. Rainfall had positive coefficient and significant 5%, temperature had negative coefficient and significant at 1%. The area of land cultivated had positive coefficient and significant at 1%. The study concluded that climate change significantly influence rice output in Nigeria. The study recommended that consideration be given to climate change in the formulation of agricultural policies for the attainment of food security and national aspiration for sustainability in the production of rice production in Nigeria.

Structural Elucidation of Secondary Metabolites in Sponge (Callyspongia pseudoreticulata) with N-Hexane Extract M. Nurdin; Hanapi Usman; Ambo Ala; Baharuddin Baharuddin
International Journal of Agriculture System VOLUME 2 ISSUE 1, JUNE 2014
Publisher : Hasanuddin University

Sponge is one of the marine species that has a high bioactivity and contains secondary metabobolite compound which can be used as antibiotic and medicine. Terpenoid compound derivatives have been successfully isolated from sponge Callyspongia pseudoretilulata by a method in which the n-hexane extract weighing 11.28 g was fractionated using vacuum column chromatography with a non-polar eluent, n-hexane. The polarity of this eluent was improved by ethyl acetic resulting in fairly polar eluent, methanol. A total of 27 fractions were obtained and one of the compounds from n-hexane extract was structurally elucidated by NMR spectroscopy and two dimensions of homonuclear and heteronuclear (1H, 13C, DEPT, H-H COSY, HMQC, and HMBC). The identified compound was a hydrocarbon (1-ethyl cyclo hex cosana-1-amin) that indicated LC50 of 60.58 against A. salina and has a great potential as antitumor or anticancer.

The Effect of Fusaric Acid Application on the Lignin and Suberin Formation as Resistance Indicator on Tomato Abdul Azis Ambar; Amiruddin Syam; Henny Setyawati; Nur Ilmi
International Journal of Agriculture System VOLUME 3 ISSUE 1, JUNE 2015
Publisher : Hasanuddin University

Fusaric acid (=FA) is a phytotoxin produced by Fusarium oxysporum, pathogen of wilt disease on tomato. A concentration of FA causes death of plant. However, low concentration will elicit various plant defense responses and inhibit pathogen growth. The research focused on the observation of lignin and suberin formation after application of FA on tomato in different concentration. This research was caried out at elementary laboratory of Agriculture Faculty of Muhammadiyah University of Parepare, Parepare and Micology Laboratory of Gadjah Mada University, Yogyakarta. Four concentrations of FA (sigma) 0, 25, 50, 75, and 100 ppm were used in this research, whereas inoculation with Fusarium oxysporum was served as control. Lignin and suberin formations in plant cell as structural resitantance response were analyzied by using microtechnique protocol. The result of histological analysis showed that treatment of F. oxysporum, 10 ppm, 50 ppm, 75 ppm, and 100 ppm of FA, caused a change in lignin content of tomato cell on 10 – 40 days after application and followed also by necrotitation. The application of 25 ppm FA increases the lignin and the suberin content without necrosis on 20 and 30 days after application.

Page 9 of 14 | Total Record : 140

7 8 9 10 11

Filter by Year

2013 2025

Filter By Issues

All Issue VOLUME 13 ISSUE 1, JUNE 2025 VOLUME 12 ISSUE 2, DECEMBER 2024 VOLUME 12 ISSUE 1, JUNE 2024 VOLUME 11 ISSUE 2, DECEMBER 2023 VOLUME 11 ISSUE 1, JUNE 2023 VOLUME 10 ISSUE 2, DECEMBER 2022 VOLUME 10 ISSUE 1, JUNE 2022 VOLUME 9 ISSUE 2, DECEMBER 2021 VOLUME 9 ISSUE 1, JUNE 2021 VOLUME 8 ISSUE 2, DECEMBER 2020 VOLUME 8 ISSUE 1, JUNE 2020 VOLUME 7 ISSUE 2, DECEMBER 2019 VOLUME 7 ISSUE 1, JUNE 2019 VOLUME 6 ISSUE 2, DECEMBER 2018 VOLUME 6 ISSUE 1, JUNE 2018 VOLUME 5 ISSUE 2, DECEMBER 2017 VOLUME 5 ISSUE 1, JUNE 2017 VOLUME 4 ISSUE 2, DECEMBER 2016 VOLUME 4 ISSUE 1, JUNE 2016 VOLUME 3 ISSUE 2, DECEMBER 2015 VOLUME 3 ISSUE 1, JUNE 2015 VOLUME 2 ISSUE 2, DECEMBER 2014 VOLUME 2 ISSUE 1, JUNE 2014 VOLUME 1 ISSUE 2, DECEMBER 2013 VOLUME 1 ISSUE 1, JUNE 2013 More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Ahsan Yunus

Contact Email
ahsanyunus@unhas.ac.id

Phone
-

Journal Mail Official
ijas@unhas.ac.id

Editorial Address
Graduate School 2nd Floor, Room 202, Hasanuddin University, Jalan Perintis Kemerdekaan KM. 10, Tamalanrea, Makassar, 90245, South Sulawesi, Indonesia.

Location
Kota makassar,

Sulawesi selatan

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Ahsan Yunus

Contact Email ahsanyunus@unhas.ac.id

Phone -

Journal Mail Official ijas@unhas.ac.id

Editorial Address Graduate School 2nd Floor, Room 202, Hasanuddin University, Jalan Perintis Kemerdekaan KM. 10, Tamalanrea, Makassar, 90245, South Sulawesi, Indonesia.

Location Kota makassar, Sulawesi selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Ahsan Yunus

Contact Email
ahsanyunus@unhas.ac.id

Phone
-

Journal Mail Official
ijas@unhas.ac.id

Editorial Address
Graduate School 2nd Floor, Room 202, Hasanuddin University, Jalan Perintis Kemerdekaan KM. 10, Tamalanrea, Makassar, 90245, South Sulawesi, Indonesia.

Location
Kota makassar,

Sulawesi selatan

INDONESIA