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Asia Pacific Journal of Sustainable Agriculture, Food and Energy
Published by Universitas Bakrie
ISSN : -     EISSN : -     DOI : -
Asia Pacific Journal of Sustainable Agriculture, Food and Energy (APJSAFE), publish two times a year, publish papers in English reporting the results of original research in the following areas: Sustainable Agriculture, Food Technology and Sustainable Nutrition, Community Development and Scientific Communication, and Other related topics deemed relevant by the Editorial Board (Special Issues)
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Articles 7 Documents
Search results for , issue " Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy" : 7 Documents clear
Melaleuca cajuputi leaf and branch extracts decreased weeds growth and weeds density in corn field. Nakmee, Pattarawadee Sumthong; Techapinyawat, Sombun; Ngamprasit, Supranee
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

Products from organic agriculture were accepted for food safety, less environmental impact, enrich nutrition and probably more tasty than products from chemical agriculture.  Plant natural products which are numerous sources for allelopathy effect were interested to discovery new herbicides for organic agriculture. Plant which mostly found in fresh water mangrove forest, Melaleuca cajuputi, was used to determine the reduction of weeds. The result indicated that these extracts inhibited all tested weed species.  Thus, this experiment was focused on the effect of Melaleuca cajuputi leaf and branch extracts on the reduction of weeds growth and weeds density in corn field.  Eight weed species; Vernonia cinerea, Merremia hederacea, Cyperus rotundus, Ipomcea aquatic, Dactyloctenium aegyptium, Rottboellia cochinchinensis, Amaranthus viridis and Commelina diffusa in corn field experiment were evaluated.  Melaleuca cajuputi leaf and branch extracts of 10 and 15% were applied in field soil for 7 days before corn seeds growing and were sprayed every 7 days on soil surface until 60 days.  Weeds dry weight and weeds density were evaluated at 30, 60, 90 and 120 days.  The result showed that Melaleuca cajuputi leaf and branch extracts decreased weeds growth and weeds density.  The highest growth and density reductions were found at 15% of Melaleuca cajuputi leaf extract.  The mixture of Melaleuca cajuputi leaf and branch grind at the concentration of 4 kg/9 m2 showed less reduction on weeds growth and weeds density than 15% of Melaleuca cajuputi leaf extract.  However, Melaleuca cajuputi leaf and branch extracts and grind not affected to corn growth and productivity.Keywords—Melaleuca cajuputi; weed reduction; corn field; allelopathy  
Phenomenon on Fishing Down Marine Food Web in East Coast Gulf of Thailand Juntaropakorn, Methee; Yakupitiyage, Amararatne
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

Several studies presented the occurrence of fishing down the marine food web in different part of the world including Thailand. Some data from Gulf of Thailand were conducted from 1966-1982 and 1977-1997 which showed a decline in the mean trophic level but did not determined the subsequence trends. Therefore, this study was focus on the analyzing of trend in trophic level and fishing-in-balance index to determine the effect of fishing and other factors. The data of trawl survey from 1988-2007 and the data of fish landing from 1990-2007 which used in this study derived from the department of fisheries, Thailand. Base on number of species or groups composition, hierachical cluster was analyzed using 10 trawl stations resulted in two main clusters covered province of Rayong, Chanthaburi and Trad. The data indicated that from 1988 to 2007, mean trophic level decreased from 3.28 to 3.10 (decline 0.09/decade) in cluster1 and 3.27 to 3.13 (decline 0.07/decade) in cluster 2. The fishing-in-balance index was above zero in the early 1990s but later on values were mostly below zero. The significantly decrease of mean trophic level, catch per unit effort (CPUE) and total landing in cluster 1 supported the fishing down marine food web phenomenon in the East Coast Gulf of Thailand. Data analyzed indicated that it was fishing down marine food web in the East Coast Gulf of Thailand consistent with the trend has been reported. By the concept of fishing down marine food web, 4 phases were classified; phase 1 was high catch of species with high mean trophic level (TLm), phase 2 was low catch of specieswith high TLm, phase 3 was high catch of species with low TLm and phase 4 was low catch of species with low TLm. The analyzed data were evaluated that fishery in the East Coast Gulf of Thailand was classified in phase 3 and eventually reach phase 4 in the near future. Overfishing, particularly of species high level in food chain was the main cause for significantly decreased in observed mean trophic levels. Keywords— Fishing down; Gulf of Thailand; Trawl survey 
Inhibition of Canker Disease in Selected Citrus Plant by Gelonium multiflorum Extract Khuntong, Soontree; Tangjitjaroenkun, Janpen; Nakmee, Pattarawadee Sumthong
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

Inhibition of Xanthomonas campestris pv. Citri: the pathogenic bacteria that caused canker disease in citrus plant were studied in lemon leaf by Gelonium multiflora extract. The antimicrobial activity was examined and antioxidant activities of the extracts were compared with ascorbic acid by scavenging effect with 2, 2- diphenyl-2-picrylhydrazyl radical (DPPH). Finally, the extracts were inhibited of canker disease in lemon leaves growing in the greenhouse. Dichloromethane extract of bark was purified by silica gel column with the solvent mixture of dichloromethane:methanol in polarity order from less polar to more polar. The purified fraction with 1:1 ratio at 400 – 500 mg L-1 followed by the ratio 1:9 (dichloromethane:methanol) purified from stem extracts at 500 mg l-1provided the inhibition activities against Xanthomonas campestris pv. Citri. The diameters of clear zone were 20 and 15 mm, respectively. Purified fraction from stem eluted with 1:9 and 3:7, dichloromethane:methanol and purified fraction from bark eluted with 4:6, dichloromethane:methanol provided antioxidant activities with DPPH but lower than ascorbic acid. Purified dichloromethane: methanol; 1:9) at 700 mg L-1 completely inhibited the growth of Xanthomonas campestris pv. Citri. Moreover, purified fraction of bark with dichloromethane:methanol; 2:3) at 500 mg L-1 partially inhibited. All purified fractions (from column chromatography) of bark extract presented higher inhibition activities against Xanthomonas campestris pv. Citri than stem extracts of Gelonium multiflora.Keywords— Inhibition; Xanthomonas campestris pv. Citri; canker disease; Gelonium multiflora; antioxidant activities  
Developing Concept of Customary Based Tree Tenure to maintaining Tree in North Sumatera Indonesia Martial, Tri -; Asaad, Mhd
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

Abstract— The research aims to develop the concept of tree tenure-based Dalihan na tolu custom in the management of trees on public land in South Tapanuli. This study became the basis to develop the management systems to encourage people planting and maintaining trees as a clarity of tree tenure systems. Tree tenure systems relating to the local rules, which is influenced by customary rules. In the long term it is important to address the environmental damage caused by the trees felling. The concept of land and tree tenure  systems based Dalihan na tolu custom, which can be the basis of tree management policy on public land. Results illustrate that the role of local communities in the Dalihan na Natolu customary system decrease in land and trees management. The development of the tenure concept-based of indigenous peoples need a cearly structuring in variety of roles. Differentiation of the indigenous peoples role in managing land and tree resources required in a well-established institution that aims to strengthen claims the rights of the common interest. Keywords: Land and tree tenure, Dalihan na tolu, security of tenure, local institutions
Establishment of Rural Enterprises Using Multi-Commodity Solar Tunnel Dryer through the Application of Social Laboratory Concept as a Sustainable Technology Transfer Strategy in the Philippines Martinez, Helen; Castillo, Priscilla; Gamalog, Danilo
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

The social laboratoryconcept as a sustainable technology transfer strategy was developed andapplied  in the establishment of ruralenterprises using the multi-commodity solar tunnel dryer (MCSTD. This is inorder to improve productivity and income of micro-enterprises engaged inprocessing and drying of agricultural and fishery products. First, the roles ofstakeholders and resources needed to hasten the adoption of MCSTD wereestablished. Coaching and mentoring of new MCSTD adopters followed to strengthentheir technical capability on proper drying of agricultural products, theoperation of the solar dryer, and on managing their businesses.  Finally, the enterprises were monitored interms of technical, socio-economic, financial viability, and their contributionto the community. Results showed that the social laboratory concept was aneffective technology transfer strategy. It played major role in theestablishment of new MCSTD-based enterprises in the different regions in thePhilippines.  A total of 15 newenterprises were established and 3 of the enterprises were found to betechnically, economically and financially viable. The use of MCSTD generatedincome for the enterprises, facilitated the creation of new enterprise,introduced unique products in the market, and increased demand of rawmaterials. Moreover, the solar drying technology was found very technicallyefficient, cost efficient, environmentally sound generating employment forpeople in the community.Keywords – solar drying, social laboratory, technology transfer, rural enterprise.**Additional information article available at page 36-40 Vol.2 No.3
Additional Article of Helen et. al Board, Editor
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

(Vol.2 No.3 (2014): 36-40)
Detection and quantification of adulterated corn and soybean in ground coffee Thao, Bui TP; Lieu, Truong TB; Dang, Tuan Q
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 3 (2014): Global Action For Sustainable Agriculture, Food and Energy
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

Adulteration in commercial ground coffee has been a regular concern all over the world, especially when it is difficult to percept adulterations with the naked eyes. This study was performed in order to set up a simple and quick procedure to detect and quantify adulteration of corn and soybean in commercial roasted ground coffee products. The floatation, spot check and microscopic methods were applied to detect adulterants in ground coffee, while caffeine was used as a chemical maker to quantify the level of adulteration. Ground coffee samples were taken from national brands, local brands and street vendor shops. The flotation test using distilled water at room temperature appeared to be a simple, quick and easy method to detect the presence of corn and soybean: corn and soybean particles started to sink within 5 seconds, while pure coffee particles can float for more than 2 min. Additionally, microscopic examination using both compound and stereo-microscope appeared to be effective tools for detection of corn and soybean while examination by a spot check could confirm the presence of starch containing materials such as corn. Using corn as a model of the adulterant, then the caffeine content in ground coffee was well correlated with the amount of corn added, which allowed estimation of the adulteration quantity possible. The results from qualitative tests revealed that 88.9±10.5% of the commercial ground coffee samples were adulterated, either with corn, soybean or some non-coffee materials. Projection from the caffeine content regression showed that the level of adulteration in the surveyed samples was in a range from 10.0 up to 47.0%.Keywords— adulteration, caffeine, coffee, spot check, flotation test, microscopic test

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