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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 7 Documents

Search results for , issue "VOLUME 2 ISSUE 2, DECEMBER 2014" : 7 Documents clear

Improving the Quality of “Leri” Rice Washing Waste by Different Period of Fermentation and Yeast Concentration as an Alternative Liquid Organic Fertilizer Muh. Akhsan Akib; Henny Setiawaty; Haniarti Haniarti; Sulfiah Sulfiah
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

This study aims to determine the best time of fermentation process and yeast concentration to improve the quality of “leri” (rice wahing waste). The study was conducted in the Bilibili village, Suppa Sub-District, Pinrang Regency, South Sulawesi Province from April to July 2012. Samples were analyzed at the Laboratory of Chemical and Food Livestock, Hasanuddin University, and Laboratory of Chemistry Department of Mines and Energy, Makassar. The study used a Completely Randomized Design (CRD) factorial pattern. The first factor i.e., treatment of fermentation period consist of a control, 2, 4, and 6 of fermentation period. The second treatment is the mass of yeast consisting of a control 1, 2, and 3 g of yeast per 5 liters of leri. Data were analyzed by two factor analysis of variance without replication. Duncan test was used for significant treatment. The result shows that the time of fermentation for 6 days produce relatively high ethanol (0,52 %), increasing the mineral content of phosphorus (0,15 ppm) and sulfur (0,35 %), and mineral content of nitrogen are relatively good (0,11 %). Yeast 3g per 5 liters of leri, gave betterethanol result (0,43 %), increased mineral content of nitrogen (0,11 %) and phosphorus (0,16 ppm), and potassium mineral content were quite good (350,25 ppm).

Effect of Temperature and Water Potential on Sprout Vigor of Potato (Solanum tuberosum L.) Seed Tuber Ifayanti Ridwan; Phil H. Brown; Shaun N. Lisson; Cri Wahyuni
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

A study was conducted to examine sprouting on potato seed tuber over a range ofdifferent temperature and moisture conditions. The Experiment was conducted under controlledenvironment conditions using a Terratec thermo-gradient table at the School of AgriculturalScience, University of Tasmania. The trial involved exposing seed tubers cv. Russet Burbank(grade 40-60 g) sourced from one seed lot to three water potentials (-0.6 MPa, -0.02 MPa and-0.01 MPa) at each of four different temperatures (10, 15, 20 and 25 °C). The growth mediumused in the trial was vermiculite (Grade 2, Australian vermiculite and Perlite Co-P/L). Thewater potential treatments were prepared based on the relationship of water content and waterpotential by Whalley et al. (2001). Four seed tubers were planted in each container filled withgrowth medium at a 10 cm depth and covered by the growth medium before the containerswere resealed. Using a pseudo replication design with temperature as the block, the moisturetreatments were randomized within each temperature treatment with two replicate containersfor each treatment combination. The design therefore provided a total of 8 tubers for eachtemperature and water potential combination, and a total of 24 treatment combinationsoverall. An analysis of variance and least significant difference (LSD) procedure using SPSSfor windows version 14.0 was performed to determine the response of the tuber seeds totemperature and moisture. Temperature and moisture significantly affected sprout growthrate, assessed as the sprouting capacity of the tubers (FW sprouts per FW tubers). Sproutingcapacity of seed tubers increased with increasing temperature and water potential. Therewas a significant interaction between temperature and moisture treatments on the sproutingcapacity (p<0.05). The differences between water potential treatments were greater at highertemperature, with differences between sprouting capacity of tubers exposed to dry and wetconditions particularly evident at temperatures of 20 and 25 ºC. Relation between the resultand risk in plant response to warmer climate as an impact of global warming is discussed.

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.

Grain Yield Stability of Quality Protein Maize Genotypes across Diverse Environments of Terai and Mid Hills in Nepal Jiban Shrestha; Mahendra Prasad Tripathi
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

Maize is produced in diverse environmental conditions in Nepal. National Maize Research Program regularly tests maize genotypes for their grain yield stability in highly diverse environments. The objective of this paper is to estimate grain yield stability of quality protein maize genotypes across different environments. Two quality protein maize genotypes namely Poshilo Makai-1 and S99TLYQ-HG-B along with Farmer’s variety were tested at nine different locations of Nepal in four consecutive years before 2013 under farmer’s fields. Alpha-lattice design with two replications was used. The results of these studies revealed that S99TLYQ-HG-B was more stable followed by Poshilo Makai-1 as compare to Farmer’s variety. The overall higher mean grain yield and regression coefficient (b) near to unity showed that S99TLYQ-HG-B is the most adaptive genotype across the tested environments. However, more than unity regression coefficient (b) indicates that Poshilo Makai-1 could be the recommended variety for better environments under farmers’ management.

Farmers Participation in Irrigation Management and Its Influence on Production and Productivity of Rice Farming A. Nixia Tenriawaru; Muh. Hatta Jamil
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

Utilization and management of irrigation, especially in the tertiary is the duty and responsibility of farmers involved and cooperate in farmer water user associations (P3A). This is confirmed in Article 1 No. PPRI. 20 of 2006 that, the utilization and management of tertiary irrigation network would be the part of farmers and requires an organization known as farmers’ water user associations (P3A). Through such participation, farmer members of P3A may gain knowledge derived from the results of their interactions with fellow members of P3A or other parties related to irrigation activities and ultimately may affect the achievement of the production and productivity of rice farming optimal. This study intends to examine the extent to which members of P3A farmer participation in irrigation management affect the production and productivity of rice farming in each tertiary, Bila Kalola irrigation. Survey method in this study is intended to obtain the required data through questionnaires to 324 farmer members of P3A in 41 affiliated P3A, which influence the participation of farmers on production and productivity of rice farming are analyzed through simple regression analysis and analysis of Cobb-Douglas production function. The results showed that: the more active participation of farmers in irrigation management activities, the increasing of production and productivity achieved, although this hypothesis has not been fully proven in each tertiary on Bila Kalola irrigation.

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.

An Early Detection of Latent Infection of Ralstonia solanacearum on Potato Tubers Baharuddin Baharuddin; Tutik Kuswinanti; Ach Syaifuddin
International Journal of Agriculture System VOLUME 2 ISSUE 2, DECEMBER 2014
Publisher : Hasanuddin University

Ralstonia solanacearum is not only a soil-borne pathogen but also a seedborne bacterial pathogen. National Seed Agency require that seed-source (G0) must free from bacterial wilt infection (0%) in potato seed certification process. This study aimed to determine an early and accurately detection of Ralstonia solanacearum in potato seedsource production (G0) on aeroponics cultivation system, which previously treated with microbial antagonists and artificialy infected with Ralstonia solanacearum. Seed potatoes were obtained from the previous study. Antagonist isolates NS01, S04, G06, and NG02 were applied separately in aeroponic system in nutrient solution, then artificially infected with R. solanacearum. These four isolates is quite effective inhibite R. solanacearum infection in potato aeroponic system with the intensity attach of 5, 7, 9 and 21% respectively, compared to 100% in control. Although the symptoms of wilt disease were appeared in plants, but the seeds did not show typical symptoms. In the positive control that inoculated with R. solanacearum without antagonists, revealing immediately wilt and death of plants, 14 days after inoculation. The result of polymerace chain reaction (PCR) using OLI1 and Y2 primers on tubers without antagonist with 100% disease incidence showed, that all of the tuber have positive results indicated by the appearance of DNA bands in the size of 287 bp. From visually healthy seeds sample resulted from antagonist treatment, only few of them have positive result and mostly other tubers showed negative result. This means that the role of antagonists on suppression of wilt disease, cannot totally guarantee the tubers free from latent infection of R. solanacearum.

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Ahsan Yunus

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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

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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

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