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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 83 Documents
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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.
Welfare Analysis of Households Involved in Involuntary Resettlement in Koto Panjang Fery Andrianus, Syafruddin Karimi, Melinda Noer, Werry Darta Taifur
International Journal of Agricultural Sciences Vol 2, No 1 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.2.1.48-53.2018

Abstract

It has been said that development requires sacrifice. This has been the experience of households living in Koto Panjang, Sumatra, Indonesia. Because of new dam construction, they have had to move to new settlements provided by the government. The displaced community consists of 4868 families from 10 villages. Many problems have arisen due to this removal. This study examines the influence of household participation and compensation on household welfare by using a Structural Equation Model. The sample consisted of 360 household heads from 12 villages in Koto Panjang whose households had been moved. The results show that compensation positively and significantly affected household welfare, while household participation could not be proven to affect household welfare.
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
Livelihood Strategy of Lake Fishing Community in Guguk Malalo Village, West Sumatra Province, Indonesia Anugrah Sri Widiasyih; Rudi Febriamansyah; Yuerlita yuerlita
International Journal of Agricultural Sciences Vol 3, No 1 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.3.1.36-43.2019

Abstract

Lake Singkarak is a livelihood source for people who live on the banks, especially for fishing activities. Unfortunately, this fishing sector shows a decline in fish catches since 1996 and significantly in 2007-2016. This paper presents the results of a study that specifically reveals the current state of the biophysical and environmental conditions of Lake Singkarak and explores the types of fishermen's livelihood strategies in relation to access to their livelihood assets at the current biophysical and environmental conditions of Lake Singkarak. This research framework adopts the Sustainable Livelihood Framework by applying a calculation of the index value/ratio of each livelihood asset. The results of this study indicate that changes in the biophysical conditions and the environment of the lake have played a role in influencing access to fishermen's livelihood assets at the study site and have implications for decreasing sources of livelihood from the lake. It was found that presently there are 6 types of livelihood strategies that are carried out by fishermen to be able to fulfill their living needs, namely Type B: Fishermen who carry out fisheries intensification and extensification (6.12%), Type C: Fishermen who have diversified their economic activities either in agriculture or non-agriculture (34.69%) , Type E: Fishermen who carry out fisheries intensification and extensification and also diversification (44.9%), Type F: Fishermen who carry out intensification and extensification of fishing and also temporary migration (2.04%), Type G: Fishermen who diversified their economic activities also temporary migration (4, 08%) and Type H: Fishermen who carry out fishing intensification/extensification, diversification and also temporary migration (8.16%). In relation to access to livelihood assets, it turns out that human resource assets are the main assets that influence the alternative choices of fishermen's livelihood strategies. The alternative type of strategy for diversifying economic enterprises, both in agriculture and non-agriculture, is the most widely chosen option besides alternative intensification and extensification of fishing in lakes.
Optimization of Sugar Palm Business Management to Increase Farmers' Income and Prosperity in Bukik Barisan Sub-District, Lima Puluh Kota Regency, West Sumatera Province Sri Zulyanti Mardhiah, Asdi Agustar, Anwar Kasim, Mahdi
International Journal of Agricultural Sciences Vol 1, No 2 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.2.8-17.2017

Abstract

This paper aims to discuss how the actual potential of existing sugar palm development in farm households. The study was conducted using case study method, where the primary data is the main data used to address the research questions. Data were collection using questionnaire which were analysed with qualitative and quantitative approach. The result of the research shows that sugar palm is a commodity that has prospect to be developed to increase income and improve welfare of poor farmers. The potential of sugar palm business development was analysed in terms three aspects: 1) condition of land availability; 2) Manpower owned for palm sugar business; And 3) Experience about palm sugar plants business. Perceptions of farmers are also quite supportive for the development of palm sugarbusiness, although including the medium category because they look very open toaccept innovation.
Analysis of the Community’s Willingness to Pay (WTP) for the Protection of Mangroves in Kuala Langsa, Aceh Zuriana Siregar; Syamsuardi Syamsuardi; Azwar Rasyidin; Eni Kamal
International Journal of Agricultural Sciences Vol 3, No 1 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.3.1.12-16.2019

Abstract

Mangrove, as one of the most unique ecosystems, is a great natural resource potential with high productivity and biodiversity able to adapt to harsh areas between the sea and coast. Its destruction rate is very mild as it is estimated to 1% each year (Ong et al., 1991) and 0.7-3% per year (Pedleton et al., 2012). The destruction of mangrove is usually related with human population density (Alongi, 2002). Widespread mangrove destruction affects the loss of biodiversity and other resources and the functioning of the ecosystem. The huge potential of mangrove must be preserved by managing, maintaining and providing costs to protect and improve ecosystems. This study aims to measure Kuala Langsa community members’ willingness to pay for the preservation and repairationof degrading mangrove. To achieve this goal, Contingent valuation methods was used in this study. Of the 131 respondents involved in this study, 112 or 85.496%  are willing to pay for the preservation of mangrove. While those unwilling to pay account for 19 or 4.504% . WTP with the households 669 earned by  is Rp 18,821,512,200/month or Rp 225,858,146,400/year.
Titonia Utilization and The Rest Of Soybean Harvest In The Alternative As Fertilizer Ultisol Fertility Improvement And Soybean Crop Production Yadi Jufri, Syafrimen Yasin, Agustian, Teguh Budi Prasetyo, Nurhajati Hakim
International Journal of Agricultural Sciences Vol 1, No 2 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.2.18-25.2017

Abstract

Utilization Titonia and soybean crop residues (straw soybean) as compost, is onealternative fertilizer to improve soil fertility Ultisol. This study aimed to determinethe effect of a mixture of compost and straw Titonia soy, lime and fertilizers inimproving soil fertility and soybean crop production. The research was conductedat experimental field LimauManis and laboratory analysis conducted at theLaboratory P3IN Andalas University, Padang. Research using Random Design(RBD), which consists of 10 treatments with 3 replications were tested. The resultsshowed that administration of lime, compost and fertilizers give effect to thechemical characteristics Ultisol namely against soil pH value, the content of N, Pand K soil. The provision of artificial fertilizers as much as 50% of the soybeancrop needs, provide higher impact than that of artificial fertilizers as much as 25%of the increase in soil fertility and the growth and production of soybean plants.Production of dry seeds of soybean highest weight obtained amounted to 1.85 tons /ha in the treatment of lime dolomite 500 kg / ha + compost mixture (5 tonsTitonia/ha with 5 tons of soybean straw/ha) + NK fertilizers by 50% of the soybeancrop needs (treatment G).
Physiological Characteristics of Sumatera’s Organic Chicken that was Raised in Cool and Hot Climate Regions Elfawati elfawati; M. Hafil Abbas; Rusfidra rusfidra; Ahadiyah Yuniza
International Journal of Agricultural Sciences Vol 3, No 1 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.3.1.17-22.2019

Abstract

This study was aimed to analyze the physiological characteristics including respiratory rate, rectal temperature, and heterophil-lymphocyte (H:L) ratio of Sumatra’s organic chicken (SOC) that was raised in cool and hot climate regions. One-hundred-and-eighty-seven male and female SOC aged about 6 months were taken from cool and hot climate regions in Sumatera Island. Regions with cool climate were represented by highlands in West Sumatera including the subdistrict of Tilatang Kamang, Canduang, and East Padang Panjang. Regions with hot climate were represented by lowlands in Riau Province including the subdistrict of Bunga Raya, Lirik, and East Kampar. Samples of SOC were collected from farmers where the distance of sampling was about 500 m. Measurements were taken on respiratory rate, rectal temperature, and heterophil-lymphocyte ratio. Data was analyzed by t-test. The result showed that the respiratory rates of SOC in hot climate regions were higher than the ones in cool climate regions, the rectal temperatures of SOC in hot climate regions were lower than the ones in cool climate regions and there was no difference between the Heterophil:Lymphocyte ratio of SOC in hot climate and in cool climate regions.
The Effect of Import Tariff Policy on Indonesian Soybean Consumption and Production Irada Sinta; Hasnah Hasnah; Dwi Yuzaria
International Journal of Agricultural Sciences Vol 1, No 2 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.1.2.26-32.2017

Abstract

This study aims to determine the factors affecting consumption and production of national soybean and the effect of soybean import tariff on domestic soybeanconsumption and production. This research was conducted in March - April 2017. The data used in this study is a secondary data in form of annual with a time series of 30 years ranged from 1986-2015. The result shows that the import quantity of soybean is affected by the variable of exchange rate; soybean consumption and import tariff. The price of imported soybean and exchange rate significantly affect domestic soybean price. While domestic soybean price and population significantly influence soybean consumption where a soybean productivity is highly responsive to wage rates. The simulation result shows that the quantity of imported soybean and soybean consumption increase with the tariff exemption (T = 0%) compared to condition when it is applied. Whereas, the domestic soybean price decreases at the exemption of tariffs compared to a condition when it is applied. Our study revealsthat the application of tariffs had no effect on soybean production and productivity.The result of forecasting without alternative tariff imports, which has been analysedduring the next 7 years, shows that in the next few years, Indonesia will not be able to achieve the self-sufficiency of soybeans.
Change of Morphological Characters of an Introduced Population of Bilih Fish (Mystacoleucus padangensis Bleeker, Pisces: Cyprinidae) in Toba Lake Nofrita nofrita; Dahelmi dahelmi; Hafrijal Syandri; Djong Hon Tjong
International Journal of Agricultural Sciences Vol 3, No 1 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.3.1.23-29.2019

Abstract

Population of Bilih Fish (Mystacoleucus padangensis) in Singkarak Lake has decreased as the effect of intensive exploitation and changes in water use function. Many appropriate works have been conducted for the fish conservation. One of them is introducing Bilih fish population to a new habitat,  Toba Lake. After nine years of releasing the fish, there was a hypothesis that these fish had undergone some changes on their morphology compared to their original population in Singkarak Lake. The changes could occure in some morphological characters and also the increase or decrease of their growth. This study was aimed at comparing morphology characters between Bilih fish introduced to Toba Lake with the original population in Singkarak Lake. Survey method was used and 400 samples of fish were taken from each Singkarak and Toba Lakes.  Parameters measured were 29 morphological characters. Data were analyzed using Mann Whitney U Test with SPSS 22. The results showed that 27 morphological characters of introduced fish had changed. Characters that had not changed were dorsal fin (anterior end)-anal fin distance (DFAF) and preanal distance (PD). Population of Bilih fish in Toba Lake might keep changing in the process of morphological character differentiation as long as environment factors still support the life of Bilih fish. 

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