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The Journal of Agriculture and Development
●The Journal of Agriculture and Development (JAD) is a peer reviewed journal publishing novel and significant research in a wide range of topics such as Agribusiness and Economics, Agricultural Mechanics, Agronomy and Forestry Sciences, Animal Sciences, Aquaculture and Fisheries, Biotechnology, Environmental and Natural Resources, Food Science and Technology, and Veterinary Medicine. The JAD is an open access journal that includes primary research, review articles, short communications, and special invited papers. We also publish special issues which focus on the current emerging topics in agricultural sciences.
●The JAD (the formerly named Journal of Agricultural Science and Technology) is published in 6 issues per year (4 issues in Vietnamese with English abstracts and 2 issues in English). The journal has published over 19 volumes since 2002. From 06/2018, the Journal started to publish online issues in two languages (English and Vietnamese).
●Period of publication: Issue 1 (FEB), Issue 2 (APR), Issue 3 (JUN, English), Issue 4 (AUG), Issue 5 (OCT), Issue 6 (DEC, English)
●The Journal's number of articles per issue ranges from 6 to 12.
●Publisher: Nong Lam University, HCMC (NLU)
Evaluating the growth performance of all male sex reversal and mixed ser tilapia (Oreochromis niloticus) cultured in earthen ponds in Binh Phuo province, Vietnam
Abstract
Investigation of small-scale farming status of Tire track eel (Mastacembelus favus) in the Mekong Delta, Vietnam
Abstract
Inventorying and proposing solutions for street tree management in Thu Duc city, Ho Chi Minh City
Abstract
Influence of the supplementation of macadamia oil cake powder on nutritional and sensory qualities of bread
Abstract
Comparison of the physicochemical properties and biological compounds of acerola fruit varieties grown in Vietnam through the various maturation stages
Abstract
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Electronic version: 27 Dec 2019 | DOI: 10.52997/jad.5.06.2019Abstract | PDF (317.1K)
Abstract
Dong Nai biosphere reserve (DNBR) is well known for its high level of biodiversity and of global meaningful ecosystem. The fauna includes 84 species of mammals belonging to 28 families, 10 orders; 407 bird species; 141 reptile and amphibian species; 175 fish species; 2,017 insect species. The fish fauna of DNBR maintains many rare and endangered fish species recorded in the Vietnam red book and international union for conservation of nature red list (IUCN's red list) such as Scleropages formosus and many other rare fish species, such as Morulius chrysophekadion, Chitala ornata, Probarbus jullieni, Cyclocheilichthys enoplos... This study was aimed to identify fish composition distributed in DNBR. After the sampling period (01/2019 to 08/2019), a total of 114 fish species belonging to 11 orders and 28 families were recorded in DNBR. There were 09 species of fish on the list of rare and endangered fish species of Ministry of Agriculture and Rural Development of Vietnam, 3 species (Chitala ornata, Cosmochilus harmandi and Hemibagus filamentus) on the Vietnam red list book; 01 species (Ompok bimaculatus) on the IUCN's red list, 11 exotic species, 78 commercial species and 13 species having potential as aquarium fish. In addition, the study also found the first presence of a species of phallostethid, Phenacostethus smithi in DNBR. -
Electronic version: 27 Dec 2019 | DOI: 10.52997/jad.8.06.2019Abstract | PDF (460.1K)
Abstract
Bixin is a principal color component of annatto pigment which is obtained from the seed coat of Bixa orellana L., a tropical shrub. The extraction yield of bixin from annatto seeds using acetone, soybean oil and sodium hydroxide solution with different extraction conditions were investigated in this study. The extraction time, temperature, solid-liquid ratio and light exposure showed significant effects on the bixin yield. The extraction using soybean oil had the lowest bixin yield followed by the extraction using sodium hydroxide solution. The extraction using acetone resulted in the highest extraction yield (68.1%) after only 40 min. The extraction using soybean oil at 100oC led to two-fold bixin yield compared to that operated at 80oC while the mild temperature (50oC) was found to be the most suitable for the extraction using sodium hydroxide solution. The exclusion of light exposure by covering extraction beakers with aluminum foil could significantly improve the bixin extraction yield due to the reduction in bixin degradation. Therefore, the extraction using acetone avoiding light exposure is suggested for recovering bixin from annatto seeds. -
Electronic version: 28 Jun 2018 | DOI: 10.52997/jad.7.03.2018Abstract | PDF (260.1K)
Abstract
The main objective of this study was to examine the efficacy and capacity of using hydroponic systems in municipal pollutant removal at household scale. Three pilot scaled hydroponic systems [dimensionfor each system: 4.5 m (L) x Φ 114 mm] were installed to investigate the optimal age of vegetable, planting density and retention time for household wastewater treatment, respectively. Water spinach (Ipomoeaaquatica) planted in 27 plastic cups throughout 4.5-m-length and 114- mm-diameter uPVC pipes filled with wastewater was employed as the treating agent of pollutants. The averaged influent contained proximately 32.5 mg/L suspended solids (SS), 76.0 mg/L biological oxygen demand (BOD5), 220.5 mg/L chemical oxygen demand (COD), 26mg/L NH4+, 5.0 mg/L NO3−, and 8.5 mg/L PO43− at pH 7.3. Results showed that a designed system consisting of 10 plants of 15-day-old water spinach pre-planted in baked clay in each cup was capable oftreating 30 L of domestic wastewater meeting the current municipal wastewater discharge standards in Vietnam (column A standards of QCVN 14:2008/BTNMT) after 4 days of wastewater retention time. Ifoperated under conditions of the above parameters, the pilot-plant hydroponic system can achieve the removal of 65% SS, 82% BOD5, 74% COD, 90% NH4+, 30% NO3− and 86% PO43−. The result of this studyhas provided an applicable domestic wastewater treatment system ecofriendly and suitable for small and medium household areas. -
Electronic version: 30 Jun 2020 | DOI: 10.52997/jad.2.03.2020Abstract | PDF (260.1K)
Abstract
Clitoria ternatea L. is a plant species that can be used in food and pharmaceutical industry. This study was conducted to evaluate the effects of different plant spacing on the productivity and quality of butterfly pea grown on grey soil in Thu Duc, Ho Chi Minh City. Six treatments correspond to plant spacing of 80 x 15 cm, 80 x 20 cm, 80 x 25 cm, 80 x 30 cm, 80 x 35 cm and 80 x 40 cm. The results showed that the highest flower amount (296.8 flowers/plant) was obtained with butterfly pea planted at the spacing of 80 x 15 cm, commercial flower weight (7.86 g/100 flowers), theoretical yield of fresh flower (1,779.0 kg/1,000 m2, actual yield of fresh flower (841.9 kg/1,000 m2), theoretical yield of commercial flower (194.6 kg/1,000 m2 and actual yield of commercial flower (89.0 kg/1,000 m2. Nevertheless, plant spacings did not affect the dry matter ratio, anthocyanin and tannin content in the commercial butterfly flowers. -
Electronic version: 28 Jun 2018 | DOI: 10.52997/jad.1.03.2018Abstract | PDF (260.1K)
Abstract
Vietnamese pangasius prices have become more volatile over the past decade exposing the business to risk and uncertainty. This study explored Vietnamese pangasius farmers’ perceptions about the sources of price risk and the effectiveness of price risk management strategies through Likert scales. The relationships between farm and farmer socioeconomic characteristics and their perceptions were also examined by using Chi-square analysis. Data were obtained through a structured survey with 110 farmers in three provinces of An Giang, Can Tho, and Dong Thap. Results suggested that pangasius farmers mostly concerned the instability of input prices, the volume of input supply, the instability of output prices, and the legislation of sales contracts between farmers and processors. We further found that price risk management strategies were not perceived as less effective measures to mitigate the price risk. Gender, farmers’ experience, farm size, crop period, farm types, and access to credit are positively related to the farmers’ perceptions. Findings on the price risk perceptions and management strategies are useful to support public and private of price risk management decision towards increasing the sustainability of pangasius production.