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International Journal of Agricultural Sciences
Published by Universitas Andalas
ISSN : 24770116     EISSN : 25981145     DOI : -
Core Subject : Economy, Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Social Sciences
International Journal of Agricultural Sciences is an open access journal published by the Graduate Program of Andalas University. IJASC publishes original research findings from throughout the world related to strategic and applied studies in all aspects of agricultural science, as well as reviews of scientific books or other publications of current agricultural relevance.
Arjuna Subject : -
Articles 78 Documents
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How far climate change affects the Indonesian paddy production and rice price volatility? Silvia Sari Busnita, Rina Oktaviani, Tanti Novianti
International Journal of Agricultural Sciences Vol 1, No 1 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.1-11.2017

Abstract

Food security issue after 2008 global-crisis is something relate with the climate change phenomenon which had worsened on the last few decades. The impact of global climate change can be seen from the fluctuation of main crops production yield in tropical countries. This has affected the food price fluctuations particularly on the grain price, both international and domestic markets. The rice-commodity, known for its thin market characteristics, is now also experiencing the fluctuation of production, its productivity and also the rice price. Considering the importance of rice as the main staple food in Indonesia, the purpose of this research is to identify the Indonesia’s rice price fluctuation (volatility) and to investigate how far climate change affects the Indonesian paddy production and rice price volatility. By applying monthly time-series data from 2007 to 2014, this research used ARCH-GARCH methods to find out the rice price volatility and VECM (Vector Error Correction Model) to investigate the impact of climate change phenomenon on the Indonesian paddy production, as well as rice price volatility both in the short-run and long-run. The result is important for the stakeholders and government in preventing the risk and uncertainty condition of paddy production and rice price fluctuation caused by climate change
The estimation of GHG emissions for hotels in Asian Institute of Technology and Chiang Mai Hill 2000, Thailand Luansak Supansa
International Journal of Agricultural Sciences Vol 1, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.1-9.2015

Abstract

In the tourism sector, hotel industry is one of the most important sub-sector. This hotel industry emits greenhouse gas (GHG) emissions mainly carbon dioxide (CO2) by consuming large amount of energy, water, and non-renewable resources in service operation everyday on basis. This paper presents results of analysis how much does the GHG emissions release in hotel. The Asian Institute of Technology Conference Center and Chiang Mai Hill 2000, Chiang Mai, Thailand have successfully estimated GHG emissions by using Bilan Carbone® tool. The mitigation options are to encourage low carbon dioxide hotels. The data collection was done by questionnaires, interviews, and observations in both of them hotels. The results of annual GHG emissions contributor both Chiang Mai Hill 2000 as 3,844 t CO2 and at AITCC about 1,011 t CO2. Energy use is a major emission contributor followed by travel, property, input material, waste generated, and freight. Higher number of guests/tourists flow, effected higher used of facilities such as electricity, air conditioning, lighting, and food & beverage. Larger size hotel service quality, greater guest room service, wide range of building area, greater facilities, and large functional are consumed higher energy and materials. As well as, the higher rate of room turning can also increase of emissions. Moreover, Chiang Mai Hill 2000 tends to take transportation which have longer distance than AITCC. Therefore, increasing higher journal distance generated higher GHG emissions as well. The short term and long term mitigation plans can also be taken into consideration to reduce GHG emissions. The recommendation of short term mitigation plans can be applied directly in both hotels thus, increasing awareness about climate change and energy conservation among uses. The long term mitigation plans recommends to give “Green Hotel” award to successful hotels for reducing GHG emissions in hotel. These plans can be incorporated the Thailand’s government policy to reduce the impacts of climate change to the hotel industry. 
Tales from long ago and why we need them to secure a resilient today Hita Unnikrishnan, B. Manjunatha, Harini Nagendra
International Journal of Agricultural Sciences Vol 1, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.10-33.2015

Abstract

We live in the Anthropocene, at a time when the human footprint is at its most pronounced. In the process ofrapid urbanization, that characterizes today's age, many ecological commons with complex histories ofgovernance and stewardships are reimagined in keeping with prevailing notions of their utility. This redefining of acommon often occurs in exclusion of former social and cultural relationships built around the resource leading toentire communities being disconnected from it. The resultant loss of perceived value can enhance vulnerability tothreats including a loss of its identity as an ecological common. In this paper, we use the case of a former lake (Sampangi lake) within the south Indian city of Bengaluru toillustrate what makes understanding the past so important when it comes to management of urban ecologicalcommons. The Sampangi lake, now a major sports stadium of the city, was once an important ecological, social,and cultural resource. Besides being an indispensable water source to the city up until the mid-19th century, thelake also supported various other forms of provisioning and cultural ecosystem services – ranging across servingdomestic purposes, livelihoods, and belief systems. How then did this lake fade into obscurity and eventualoblivion in the intervening years, and more importantly, what happened to the people who once had strong ties withthe resource? Do events of long ago resonate even today and if so, how do they still speak to us? In order to answer these questions, we combine landscape change analysis through geospatial methodsalong with official archival records and oral narratives to unravel the story of change and its impacts on this urbancommon. We examine different changing notions of the utility of this lake pictured against a backdrop of rapidurbanization, migration, and landscape change. We relate this historical picture with contemporary trends in lakemanagement to draw a parallel. In so doing, we demonstrate that obtaining knowledge about the history of aresource, the history of its use, the various stakeholders accessing it, and the various conflicts it witnessed can helpprevent exclusionary histories, alienation of communities, and encourage citizen stewardship of the resource. Thiscan further shape more equitable, ecologically robust policy frameworks aimed at enhancing social and ecologicalresilience and therefore longevity of the resource.
Discussion on possibility of community-based waste management views from citizen environmental consciousness: A case of rural area in Karang Joang Village, Balikpapan Indonesia) Indriyani Rachman, Toru Matsumoto
International Journal of Agricultural Sciences Vol 1, No 1 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.12-20.2017

Abstract

The habit of Karang Joang people is throwing garbage, inherited from generation to generation. Most of treating’s their garbage are by burning it in the yard, throwing into the garden or the river. The transportation to take garbage that isn’t intensive by city officers and the lack of knowledge in managing the garbage greatly affects the pollution condition of the air, soil and water in the village. This research focuses on the patterns of society in treating organic waste and inorganic. Environmental conditions in the village to make some attention from the city government Balikpapan. Because the village is located in a protected forest manggar should be kept clean. We distributed questionnaires to 500 housewives that are living in 12 areas near the river. We interviewed one of the small shop and 5 housewives about what they buy and how dispose of waste in one day. Approximately 5-7 sachet plastics and around 200-300 grams of organic garbage. And approximately one drum of water is used for one family. Six months after distributing questionnaires and analyzing, we held a workshop with theme on the importance of eco-friendly living, composting of organic garbage, and counseling about bank of garbage program for 32 leaders in the village. Then we try to find solutions about how to build the consciousness and management in solid waste. In this study, some possible solutions have been presented by transfer environmental technologies
The effect of fermented coconut waste to the growth of catfish (ClariasSp) Farizaldi, Novirman Jamarun, Jafrinur, Yeti Marlida
International Journal of Agricultural Sciences Vol 1, No 1 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.21-27.2017

Abstract

This study aimed to determine the effect of fermented coconut waste on the growth of catfish (Clariassp). The study design used was completely randomized design (CRD) with 4 treatments and 5 replications. Treatments included P0 (0% of fermented coconut waste in the feed), P1 (10% of fermented coconut waste in the feed), P2 (20% of fermented coconut waste in feed), and P3 (30% of fermented coconut waste in the feed). The observed variables were feed consumption, absolute body weight, feed conversion and survival rate. The results showed that using fermented coconut waste for catfish diet significantly (P <0.05) affected feed intake, absolute body weight, feed conversion and live survival of the fish. The conclusion of this research was using 20% of fermented coconut waste in the diet can increase the growth of catfish (Clariassp).
Trade policy and Green Growth Evi Susanti Tasri
International Journal of Agricultural Sciences Vol 1, No 1 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.28-38.2017

Abstract

Nowadays, Limited Natural resources and population Growth demanded a fundamental change in economic policy. This paper tried to assess the link between economic growth especially green growth and Trade policy in the form of economic openness.  The Study conducted by using survey literature and empiric. The outcomes of theoretical study of literature and empirical finding using panel data showed a significant effect of openness trade policy on Green GDP growth of countries.
Specific RAPD frafments related with sex type in Salacca (Salacca edulis L.) Ediwirman, Irfan Suliansyah, Gustian and Jamsari
International Journal of Agricultural Sciences Vol 1, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.34-46.2015

Abstract

Salacca (Salacca edulis L.) is a tropical plant with a high economic value. The sexes of salacca can be grouped as dioecious, monoecious, dan hermaphrodite. Farmer's success in cultivation is especially determined by the male to female ratio. The present ratio of male and female plants is 1:4. Determining sex based on morphological characteristics is not effective and difficult for young plants (seedlings), also to lysozim marker and chromosome. Marker Assisted Selection is a strategy to determine sex using a marker. Random Amplifed Polymorfism DNA (RAPD) is an amplification technique that uses markers. Of 305 primers tested, 4 primers, OPO-17 produced 297 bp product, OPAP-20 produced 554 bp as the specific fragment for the female and UBC-454 produced 934 bp as the specific fragment for the female and UBC-454 produced 946 bp as male, primer UBC-78 with the size of fragment 562 bp as the specific fragment for the female.
Collaborative training to improve beef cattle farmers’ technical competency in West Pasaman District Fuad Madarisa, Melinda Noer Asmawi, Jafrinur
International Journal of Agricultural Sciences Vol 1, No 1 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.39-47.2017

Abstract

At the end of 2015, this study has been conducted to describe the planning; process; and evaluation of collaborative training using a comparative approach, 220 and 44 beef cattle farmers participated as informant in both types of - collaborative and non-collaborative training respectively. Fifteen informants representing stakeholder provided primary data. Both primary and secondary data were analyzed by using qualitative and quantitative approaches. The results showed that planning was based on an effort to accomplish the discrepancy of cattle farmer technical competency to perform breeding program. Process of conducting collaborative training focused on group management and keeping beef cattle. In non-collaborative training was on recording technics to prepare the issue of breeding cattle certificate. Collaborative training was assisted by a number of stakeholder facilitators, but, non-collaborative training was carried out by facilitators from an institution. Improvement of farmer technical competency has shown by adding of 58.41 % of cattle population, although there was an increasing of participant cognitive domain by 43.53 % at collaborative training. The recommendation advised that management and keeping cattle technical competency are continiously acquired for the half of groups (54.5%), while recording improvement should be taken into account at all groups (100 %).
INCREASED YIELD AND NUTRITIONAL VALUE OF KUMPAI GRASS (Hymenachne amplexicaulis (Rudge) Nees.) WITH ARBUSCULAR MYCORRHIZAL FUNGI AND ORGANIC FERTILIZER IN RED-YELLOW PODZOLIC SOIL Hardi Syafria, Novirman Jamarun, Mardiati Zein Evita Yani
International Journal of Agricultural Sciences Vol 1, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.47-54.2015

Abstract

Arbuscular Mycorrhizal Fungi (AMF) can help plants by improving the uptake of low P availability acidsoils. Organic fertilizers can effect the physical, chemical and biological soil. The purpose of this research is tostudy and determine the effect of AMF and organic fertilizer on increasing yield and nutritional value of kumpaigrass in red-yellow podzolic acid soils. The study design used a completely randomized 5 x 3 factorial pattern andrepeat three times. Two factors as treatment: AMF and organic fertilizer. AMF usage consisted of three levels:control (0 g/pot), AMF (10 g/pot) and AMF (20 g/pot). The organic fertilizer usage consisteds of five levels:control (0 %), manure (50 %), manure (100 %), compost (50 %) and compost (100 %). Variables measuredincluded the width of leaves, plant length, number of tillers, the yield of forage dry matter, crude protein,phosphorus, dry matter and organic matter digestibility. The results showed that the AMF and organic fertilizer hada highly significant (P<0.01) effect for all observed variables. The interaction AMF and organic fertilizers hadsignificant effect on crude protein, phosphorus and organic matter digestibility.
MYCORRHIZAL GROWTH RESPONSE AND GLOMALIN PRODUCTION EFFECTED BY ARBUSCULAR MYCORRHIZAL FUNGI (AMF) AND NITROGEN OF ORGANIC MATERIALS ON CORN Eddiwal, Amrizal Saidi, Eti Farda Husin and Azwar Rasyidin
International Journal of Agricultural Sciences Vol 1, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.1.55-65.2015

Abstract

Symbiotic relationships between arbuscular mycorrhizal fungi (AMF) and plants can increase the capacity of plants to absorb nutrients and water from the soil by exploring micropores not accessible to plant roots. The arbuscular mycorrhizal symbiosis between plants and soil fungi improves phosphorus and nitrogen acquisition under limiting conditions. Recent discoveries indicate that AMF hyphae containing glomalin as glycoproteins and function unitinge the soil particles to form stable soil aggregates. Glomalin acts as an adhesive (glue) produced by AMF symbiosis with the host plant. The AMF is capable of taking nitrogen and other nutrients from a source of organic materials to produce glomalin which is transferred to the host plant. The study was conducted using nitrogen from forage materials of Tithonia (Tithonia difersifolia) which the AMF needs to produce glomalin. This study assess the need for organic N by AMF to the mycorrhizal growth effect and its effects on glomalin. The study use sterile medium sand and zeolite mixture (w/w 1:1) in pot culture experiments with the corn as the host. For treatments using N derived from Tithonia are five doses, namely 0, 10, 20, 30, and 40 mg of N Tithonia each pot. At  the time of planting, the corn roots inoculated with AMF spores of the two species, namely Glomus luteum and Glomus versiforme. We show that a positive mycorrhizal growth response (MGR) was observed only in the dose of range 20 to 30 mg N. This response did not appear to be affected by high nitrogen supply. Our results also show that in Glomus luteum at the dose of 20 mg N produce glomalin highest, namely 2.60 mg.g-1 in the planting medium. Glomus versiforme has produced glomalin is 2.38 mg.g-1 at the dose of 30 mg N. The AMF species did not significantly affect the results of glomalin, while the use of N from forage materials of Tithonia significantly influenced the production of glomalin.

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