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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 6 Documents

Search results for , issue "VOLUME 1 ISSUE 1, JUNE 2013" : 6 Documents clear

Bacterial Antagonist Isolates in Controlling Bacterial Wilt Disease of Potato (Ralstonia solanacearum) in Aeroponic Cultivation System Nurbaya Nurbaya; Tutik Kuswinanti; Baharuddin Baharuddin
International Journal of Agriculture System VOLUME 1 ISSUE 1, JUNE 2013
Publisher : Hasanuddin University

The growing of potato plants in aeroponics system is considered as safe and ecologically friendly for producing natural, healthy plants and crops. However, it often faces with several constraints. Infection of bacterial wilt caused by Ralstonia solanacearum in the aeroponics cultivation system can spread rapidly through the nutrition flow and lead to plant death and crop failure. The objective of this study was to evaluate bacterial antagonist isolates belonging to Clostridium sp in reducing bacterial wilt disease of potato caused by Ralstonia solanacearum in aeroponic system and its effect on increasing the weight and number of potato tubers. The results showed that of the seven treatments tested on potato aeroponic system, treatment with a combination of isolates NS01 + G06 + S06 tend to be more effective in suppression of bacterial wilt disease (85%), increase the amount of seed tubers (162.5 tubers/treatment) and increase the average of tuber weight as much as 311.25 gr/treatment. It can therefore be concluded that a combination of three isolates of Clostridium sp i.e: NS01 + G06 + S06 had some synergic activities in potato aeroponic cultivation system.

The Impact of Infrastructural Facilities on the Poverty of Farmers in Bidur Municipality, Nepal. Udaya Ranamagar
International Journal of Agriculture System VOLUME 1 ISSUE 1, JUNE 2013
Publisher : Hasanuddin University

Poverty is one of the major problems in Bidur Municipality, Nepal. The municipality has higher rate of poverty compared to the other municipalities. The municipality has been suffering from poor infrastructural facilities. Therefore, this study identifies the significant aspect of infrastructures which might affect poverty. Since the concept of poverty is broad and has been discussed from many perspectives, the per capita income was taken to identify poverty in this study. Correlation and Multiple Regression Analysis were employed. Results showed that 30% of the people lived below the poverty line, which is higher than national urban poverty. Among the different infrastructural facilities, paved roads were found to be the most dominating factor that has an impact on the poverty in the Municipalities. However, other influencing factors such as vocational training and employment in non–agricultural sector were also significant in improving the poverty line of farmers in the municipality. Future research should be focused on studying the impact of paved road construction in other municipalities that may help to reduce poverty within the farmer’s community when more economic opportunities are created.

Weed Management on the Abundance of Insect Natural Enemies in a Cabbage Field Sri Nur Aminah Ngatimin; Syatrawati Syatrawati; Rosi Widarawati
International Journal of Agriculture System VOLUME 1 ISSUE 1, JUNE 2013
Publisher : Hasanuddin University

The study was conducted to determine the effect of weed management level on the abundance of insect natural enemies in cabbage fields. Two levels of weed management were applied in the field, namely with and without herbicide application in two growers’ cabbage fields in Malino, South Sulawesi, Indonesia. Results demonstrated that insect natural enemies were more abundant in the field without herbicide application than those in the field with herbicide application. Five species of predatory insect species were collected from both fields, anmely Solenopsis sp., Ophionea sp., Euborellia sp., Cicindella sp., and Paederus fuscipes. The herbicide and its surroundings were kept weed-free during the growing season. Four most abundant weed species were found in the field without herbicide treatment including Nasturtium indicum (Brassicaceae), Galinsoga parviflora (Asteraceae), Ageratum conyzoides (Asteraceae) and Cleome rutidospema (Capparidaceae).

Prospective Effects of Induced Mutation by Gamma Radiation in Essential Oil Production of Lemongrass (Cymbopogon citratus) S.A. Sharifah N.R.; A.M. Mahir; C.W.N. C.W.-Zanariah; Kamaruzzaman Jusoff; M.N. Hanina; O Siti Salhah; I. M.Noor
International Journal of Agriculture System VOLUME 1 ISSUE 1, JUNE 2013
Publisher : Hasanuddin University

This review discusses the prospective effects of induced mutation in lemongrass, Cymbopogon citratus by gamma radiation towards its essential oil production by comparing available literatures on radiation studies in Cymbopogon genus. Previous studies on Cymbopogon mutation breeding program have shown that most of the analyses were limited to physical characteristic observation and concise chemical analysis in their essential oil yield. The issue that comes into view is the on-going things that happen in their essential oil biosynthesis correlated with its biological properties and chemical composition changes. Finding the exact cause of where and how the radiation had triggered the differences in essential oil production between mutant and its control variety need to be studied. This concern possibly could be answered by analysing the changes between both varieties on their interactions within chemical, biological and genetic perspectives. Thus, strong understanding could be build for better analysis in lemongrass mutation breeding.

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.

The Biology and Pathology of Pseudocaligus uniartus Ho, 2004 (Copepoda: Siphonostomatoida: Caligidae) Infecting Siganids (Siganus sp) in Indonesia Hilal Anshary; Sriwulan Sriwulan; Ahmad Muyassar
International Journal of Agriculture System VOLUME 1 ISSUE 1, JUNE 2013
Publisher : Hasanuddin University

Siganids are marine fish which are potentially cultured in ponds or floating net cages. In attempt to produce spawners from wild fish stock, the Caligid Pseudocaligus uniartus appeared in culture facilities causing mild to heavily damage on infected fish. The purposes of this research were to study the mode of infection, biology and pathology of P. uniartus. Egg strings were collected from ovigerous females infecting Siganus guttatus. The parasite posses two nauplius stages, one copepodid, four chalimus stages and young adult. Hatching rates reached 96% at 20 ppt, and 94% and 90% at 25 and 30 ppt, respectively. The eggs started to hatch theree hours after incubation and most eggs had hatched within seven hours. Nauplius stages were estimated for about three hours. Copepodid remained alive after two days without host and started to die within three days and all died within six days. Newly attached copepodid as well as chalimus was mainly found on posterior part of dorsal and anal fins and pectoral fin. Young adult and/or adult parasite were found on the surface of the body, caudal and pectoral fins of host. The estimated time needed from copepodid to adult was seven days. All larvae have become adults on day 10. The complete life cycle was estimated within 7.6 - 10.6 days. Heavily infected fish showed lesion on skin and eroded fins. Large number of inflammatory cells was infiltrated on the infected areas.

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Ahsan Yunus

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ijas@unhas.ac.id

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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

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