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International Journal of Agriculture System

ijas
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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

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Advantages of Hybrid Corn Seed Production Compared to Corn Grain Bahtiar Bahtiar; B Zanuddin; M Azrai
International Journal of Agriculture System VOLUME 8 ISSUE 1, JUNE 2020
Publisher : Hasanuddin University

Corn seed breeders are indispensable in the supply of superior hybrid corn seeds. Its ability to produce seeds is evaluated for their superiority compared to the production of corn grain yield. A study was conducted in Jatirogo District, Tuban Regency, East Java province in July to December 2019. Involving farmers cooperator implementing hybrid corn seed production in the area of 96 ha and non cooperator farmers who produce the corn grain yield in the same location. We observed the variables: cost of production, yield and farmers income. Data and information were analyzed by Benefit Cost Ratio (B/C) and Marginal Benefit Cost Ratio (MBCR). The results showed that farmers who produced hybrid corn seeds of Nasa-29 variety (cooperators) were able to produce 4.6 t/ha of wet cobs with an income of IDR. 19,470,000/ha, while farmers who produced grain corn of 7.9 t/ha with an income of IDR. 15,943,000/ha. MBCR analysis showed that, the switching is able to added the farmer income Rp.4,100 for every use cost Rp.1,000 as long as the seed procurement policy remains unchanged and related institutions continue to provide support.

Tagging and Mapping of Mixed Dipterocarp Mountain Forest at Species Level using an Airborne Hyperspectral Imager Kamaruzaman Jusoff
International Journal of Agriculture System VOLUME 1 ISSUE 2, DECEMBER 2013
Publisher : Hasanuddin University

Forest inventories describe the quantity and quality of trees and other organisms of the forest and the characteristics of the land on which the forest grows. Thus, to manage the resource of the forest systematically, the forest has to be precisely identified and classified before implementing decisions. A study on the spatial distribution of mountain mixed hill dipterocarp forest tree species in Gunung Stong Forest Reserve, Kelantan, Malaysia was conducted using an airborne hyperspectral imaging technique to identify, tag and map tree distribution at species level for future sustainable harvest and management planning. The general objective of this study is to assess the capability and usefulness UPM-AISA airborne hyperspectral sensor in Pre-Felling forest inventory while the specific objectives are to identify, map and tag individual trees in Gunung Stong Forest Reserve, Kelantan. A Sobel filter was used to enhance the image followed by a Spectral Angle Mapper (SAM) analysis to classify the individual tree species within the study plot. A digital map of tree tagging was produced with the tree species identified were Kelat (Syzgium spp), Keledang (Artrocarpos spp), Mengkulang (Heritiera spp), Tempinis (Streblus elongatus), Keranji (Dialium spp), Tulang Daing (Callerya atropurea), Meranti Sarang Punai (Shorea parvifolia), Kembang Semangkuk Jantung (Scaphium macropodum), Bintangor (Calophyllum spp), Nyatoh Minyak (Sapotaceae spp), Mersawa (Anisoptera spp), Resak (Cotylelobium spp), Sepetir (Sindora spp), Temponek (Artocarpus rigidus) and Petaling. The mapping accuracy of 89.66% was attained in the 1 ha study plot. Tree tagging using airborne remote sensing has a great potential in the Pre-F inventory and should be integrated with a GIS database management for future decision in management, development and utilization of sustainable forest resource.

Application of Liquid Silica Nutrients to Plant Growth Analysis and Rice Productivity Affected by Salt Stress (NaCl) Nasrudin Nasrudin; Aditya Wahyudhi
International Journal of Agriculture System VOLUME 9 ISSUE 2, DECEMBER 2021
Publisher : Hasanuddin University

The use of liquid silica nutrients under salt stress can increase plant resistance through cell wall thickening which will also affect to increase productivity. The study aims to examine the effect of liquid silica nutrients to plant growth analyze and rice productivity affected by salt stress (NaCl). The experiment used a factorial completely randomized design. The first factor was NaCl concentrations consisted of 0 dS m-1, 4 dS m-1, 8 dS m-1, and 12 dS m-1. The second factor was application of liquid silica nutrients consisted of 0.2 mL L-1, 0.4 mL L-1, and 0.6 mL L-1. The treatments were repeated three times. Increasing the NaCl concentration to 12 dS m-1 when the plants were 4 weeks after planting caused a decrease in leaf area index. The addition of liquid silica nutrients with concentration up to 0.6 mL L-1 under salted conditions led to an increase in root shoot ratio, and the addition of liquid silica nutrients with concentration of 0.6 mL L-1 in salted conditions of 4 dS m-1 caused an increase in plant growth rate. The results showed that the leaf area index, leaf area ratio, root shoot ratio, and plant growth rate were positively correlated with plant biomass. Furthermore, the root shoot ratio had a positively correlated with productivity, the harvested index had a positively correlated with the number of productive tillers, percentage of filled grains, and rice productivity. However, the net assimilation rate and harvested index were negatively correlated with plant biomass.

Plastic Particles in Silverside (Stolephorusheterolobus) Collected at Paotere Fish Market, Makassar Akbar Tahir; Chelsea M. Rochman
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

Plastics represent the latest contaminant in the marine environment. Although plastics without doubt represent a uniquely valuable material particularly in construction, packaging and fishing gear applications. Current research on plastic debris in digestive tract content of pelagic fish is part of ongoing collaboration between University of Hasanuddin and University of California at Davis. Locally caught and consumed Silverside (Stolephorusheterolobus) or widely known as anchovies has been the subject on this studies. Freshly landed fish were collected from Paotere fish market, which is also the biggest fish wholesale location at Makassar City, South Sulawesi, Indonesia. At laboratory fish digestive tracts were removed and digested in 10% KOH at 60o C overnight, followed with plastic particles observation using binocular microscope. Four out of 10 fish investigated were found to contained plastic particles in their digestive tract. This is the first work on plastic debris in fish gut ever conducted in the region, which is in accordance to previous works on plastics debris elsewhere and will be further discussed for their possible effects, both on food safety and human toxicology.

Analysis of Determinant Indonesian Tuna Fish Competitiveness in Japanese Market Sri Hidayati; Dwidjono H. D; Masyhuri Masyhuri; Kamiso H. N
International Journal of Agriculture System VOLUME 3 ISSUE 2, DECEMBER 2015
Publisher : Hasanuddin University

Japan is the main market of Indonesian tuna exports, either the world’s largest tuna market, even so the competition level is high. This condition has made it as the main point for Indonesia to be able to compete it’s tuna in the global market. The research used time series data of world’s tuna’s import and export in 1982-2012 from UN Comtrade and Indonesia Ministry of Maritime Affairs and Fisheries. Data were analyzed to measure market share (MS), Revealed Symmetric Comparative Advantage (RSCA), Trade Specialist Ratio (TSR), while the determinant (factors) of competitiveness employed simultaneous equations. The results showed that: (1) The average market share of Indonesian tuna in the Japanese market was 25.20%, (2) Indonesia tuna have a high competitiveness and it growth to maturity, (3) Quality and trust is a decisive determinant (factor) of Indonesian tuna competitiveness in the Japanese market.

Crablet of Mud Crab Scylla Olivacea Production from the Different Stages of Larvae fed Artemia Nauplii Enriched Using Nannochloropsis sp Gunarto Gunarto; Andi Parenrengi; Early Septiningsih
International Journal of Agriculture System VOLUME 4 ISSUE 2, DECEMBER 2016
Publisher : Hasanuddin University

Improvement of feed quality for mangrove crab larvae rearing is one of theimportant factors to increase of crablet production. The aim of the research was to knowthe influenzing of enriched Artemia nauplii using Nannochloropsis sp fed to the differentstages of larvae Scylla olivacea on crablet production. Twelve units of tanks volume 250L filled with saline water salinity 30 ppt, aerated, then stocked with new hatched mud crablarvae zoea-1 at the density 100 ind./L. The larvae zoea-1 were fed rotifer, Brachionus sp.and after zoea-3, beside fed by rotifer, the larvae were also fed by Artemia naupli. Fourtreatments were tested, namely: A). Artemia nauplii enriched using Nannochloropsis sp.was given to the larvae zoea-3 until develop to megalop stage. B). Artemia nauplii enrichedusing Nannochloropsis sp was given to the larvae zoea-4 until develop to megalop stage.C). Artemia nauplii enriched using Nannochloropsis sp was given to the larvae zoea-5 stageuntil develop to megalop stage. D). Artemia nauplii without enriched using Nannochloropsissp. was given to the larvae zoea-3 until develop to megalop stage. Result of the researchshowed that the highest of Larvae Development Indexes and Megalop Occurence Indexeswas obtained in treatment A and resulted the highest of crablet production, then followed bytreatment C and B and those were significantly different (P<0.05) with the crablet productionin treatment D. The use of Artemia nauplii enriched by Nannochloropsis sp. to feed larvae,S. olivacea stage zoea-3 to zoea-5 until develop to the megalop stage is one of the key factorto enhance the crablet production. By this finding, the crablet production in hatchery will beincreased and the mud crab culture in brackishwater pond able to developed.

Patterns of Food Consumption and Production of Mountainous Community in Sinjai District, South Sulawesi Province, Indonesia Ahfandi Ahmad; Rahmadanih Rahmadanih; M. Saleh S. Ali
International Journal of Agriculture System VOLUME 5 ISSUE 1, JUNE 2017
Publisher : Hasanuddin University

Food availability of one area affects its community food consumption patterns. The area will use its natural resources to satisfy all needs of its society. This study aimed to explain the patterns of consumption and production of food in a mountainous area. This research is a descriptive study using both qualitative and quantitative approaches. In qualitative approach, the data obtained by indepth-interview and Focus Group Discussion (FGD), whereas quantitative data obtained through household surveys of 40 households as samples. Field data collection is done systematically through questionnaires and interviews. There are two data sources namely primary data and secondary data. Primary data were obtained from people in the local area either as informants selected using snowball techniqueor respondents selected purposively. Furthermore, the secondary data were obtained from the literature that correlates with research areas. The result shows that the pattern of food production in the mountainous region is divided into two types based on the land used that is wetland and dry land. The wetland is used by mountainous community to produce food such as rice and corn with a frequency of twice a year. As for the dry land, it is cultivated to produce vegetables that are produced throughout the year as daily necessities. The pattern of consumption in the community correlates with the amount, type and consumptive frequency of the food. In general, people in mountainous areas still consume rice as a staple food by eating vegetables and fish as complementary with a frequency of 2-3 times a day. This is because the access is still relatively easy to obtain these foods.

Potency Analysis for Agro Science Techno Park Area Development Plan in Gorontalo Province Wawan K. Tolinggi; Hayatiningsih Gubali; Mahludin Baruwadi; Amelia Murtisari
International Journal of Agriculture System VOLUME 6 ISSUE 1, JUNE 2018
Publisher : Hasanuddin University

Global competitiveness index report in 2015 has put Indonesia in the 30th rank on one of the research collaboration performance between university and industry as innovation pillar. This indicates that there is still lack of synergy between higher education institutions and industry to develop research output. As the answer to this challenge, the Indonesian government initiated the establishment of Science Techno Park (hereafter, STP) as business technology incubator to stimulate and to manage the flow of knowledge and technology in universities, research and development institutions, industry, and government. However, among eight existing STP and 78 more that were planned to be built, Gorontalo, as an agricultural province with the potential to develop agro STP, was not among them. This study is aimed at examining the area potentials, potential commodities, and agro-industry potentials that are feasible for developing a pilot area for agro STP in Gorontalo province as a basis for implementation of agro-industry cluster policy to strengthen the regional innovation system in Gorontalo province. The data were collected from survey and focus group discussion (FGD). The data were analyzed by using Location Quotient Method and Exponential Comparison Method. The results reveal three potential agro-industry regency areas; Gorontalo Regency, Boalemo Regency, and Gorontalo Utara Regency as well as seven leading commodities for these potential areas; corn, coconut, marine fisheries, cocoa, beef cattle, cassava, and chili. Further, for agro-industry, the most dominant potentials to be developed are flour, beef floss, chips, handicraft, and animal feed.

Traditional knowledge in weathering effects of climate variability on upland farming among Buhid Farmers in Occidental Mindoro, Philippines Susanita G. Lumbo
International Journal of Agriculture System VOLUME 6 ISSUE 2, DECEMBER 2018
Publisher : Hasanuddin University

This exploratory study highlights the tradidional knowledge employed by Buhid farmers in weathering effects of climate variability on upland farming. A total of 100 farmers from two Buhid settlements participated in the study. They are either young or middled-aged and with small or big households. Less than half of them are affiliated to community organizations. Majority have neither attended relevant trainings and seminars nor have been involved in community initiatives relating to climate variability adaptation. The farmers attribute poor soil, low yield, poor yield quality, water scarcity, depletion of natural resources, and crop pest and diseases as manifest effects of climate variability. They practice rituals, ecological farming, and food substitutes to counter negative effects of climate variability on upland farming. The Buhids’ organizational affiliation, trainings and seminars attended, and community involvement were found associated to the traditional knowledge employed in adapting to effects of climate variability on upland farming.

Formulation of Bacillus and Azotobacter Consortia in Liquid Cultures: Preliminary Research on Microbes-Coated Urea Reginawanti Hindersah; Mieke Rochimi Setiawati; Priyanka Asmiran; Betty Natalie Fitriatin
International Journal of Agriculture System VOLUME 8 ISSUE 1, JUNE 2020
Publisher : Hasanuddin University

The spore-forming Bacillus and cysts forming Azotobacter are Plant Growth Promoting Rhizobacteria which has been used as biofertilizer in sustainable agriculture since they tolerant to dried soil. Drought resistant microbes will be useful to coat urea in order to reduce the lost of nitrogen. The objectives of this preliminary study were to study the effect of molasse based liquid media on the population of Bacillus spore and Azotobacter vegetative cell and to determine the composition of four bacterial species in liquid formula. In the first experiment The Bacillus subtilis, B. megaterium, A. chroococcum and A. vinelandii were grown separately in 1% cane molasses enriched with 0.1% NH4Cl. As control treatment, The Bacillus and Azotobacter were grown in Nutrient Broth and Ashby’s mannitol broth respectively. In the second experiment, different composition of said Bacillus and Azotobacter were grown in molasses based liquid media prior to count the spore and vegetative cell. The results showed that molasses-based media supported bacterial growth and initial ratio 1:1:1:1 of liquid inoculant was effective to increase bacterial growth. This experiment suggested that the use of organic based media was useful practice of liquid biofertilizer formulation for granule urea coating.

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

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Kota makassar,

Sulawesi selatan

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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

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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