Hue University Journal of Science: Agriculture and Rural Development

Impacts of participation in Agriculture Cooperative linkage to economic performance of rice product at Hoa My Tay commune, Tay Hoa District, Phu Yen Province

2023-09-18T01:08:39+00:00

This study is to analyze the impacts of participation in agriculture cooperation linkage on rice economic performance of household at Hoa My Tay commune, Tay Hoa District, Phu Yen province. The findings from propensity score matching analysis on 135 household involving in production linkage and counterfactual group of 78 households show that the cooperative’ functions such as disseminating, sharing market information, providing the technical assistance, and supporting to access the qualify supplying sources are highly recognized by households. Age, number of years at school, area for rice cultivation, and percentage of rice income in total household are positively related to the involvement in cooperative linkage. Additionally, area of rice production and the percentage of income from rice in total yearly household income positively affect the participation of households in this linkage with cooperative. The study also found households with production linkages have more advantages in accessing techniques and selling prices compared to others. As a result, these households achieved the superior income from rice production is higher than households without linkages.

Application of remote sensing and Google Earth Engine to create an agricultural land use status quo mapping in 2023 in Hoa Vang district, Da Nang city

2024-04-02T08:18:49+00:00

Hoa Vang is an agricultural district of Da Nang City. Therefore, the management and utilization of agricultural land are among its essential tasks. This study aims to utilize Sentinel 2 imagery to create a current status of agricultural land use map in Hoa Vang District in 2023 by using Google Earth Engine. The research employs the Random Forest method for image prediction, assesses reliability using the Kappa index and the overall accuracy. The calculated Kappa index achieves a value of 0.85, and the overall accuracy is 0.87. These results demonstrate that the agricultural land use map established through Sentinel 2 imagery is highly reliable. The study reveals that agricultural land covers an area of 61,204 hectares, accounting for 83.5% of the district's natural area. Forestry land has the most significant area, with 52,438 hectares, representing 71.5% of the district's total area. Rice cultivation land (3,484.1 hectares) and perennial crop cultivation land (3,348 hectares) have equivalent areas, accounting for approximately 9.5%. Other annual crop cultivation land has the smallest area within the agricultural land category, with 1,933.9 hectares, representing 2.6% of the district's area. The research findings serve as reference material for managing and utilizing agricultural land in Hoa Vang District, Da Nang City.

Effects of some factors on the growth and development ability of Jasminum subtriplinerve stem cuttings in nursery periods

2024-04-02T02:34:26+00:00

This study was conducted to evaluate the effects of factors on the growth and development of Jasminum subtriplinerve in nursery periods. The experiments were arranged according to the Split - Splot method, three repetitions. In experiment 1, the large plot had 6 concentrations of IAA and the small plot had 3 types of cuttings. experiment 2, the large plot had 3 types of substrates and the small plot had 4 levels of leaf cutting area. After 90 days, the seedling growth indicators of the best treatments of experiments 1 and 2: The survival rate: 83,33, 83,00%; The budding rate: 96,67, 96,67%; Number of buds: 3,00, 3,40 buds/cutting; Height: 12,93, 12,77 cm; Diameter: 0,86, 0,93 mm; Number of leaves/bud: 5,80, 5,93, rooting index: 122,62, 199,04 cm. The results of this study show that the breeding formula for of Jasminum subtriplinerve species that can be applied in the nursery stage is as follows: middle cuttings with 15 - 20 cm long, at least 3-4 burning eyes; leave 2 - 4 leaves, cut off 1/3 of the leaf area; growth stimulant is IAA concentration 1,000ppm; the substrate consists of 60% ancient alluvial soil + 10% sand + 22% manure + 5% microbial fertilizer + 3% NPK.

Effect of recombinant LvCTL3 protein on the immune parameters, growth performance , diseases resistance of white-leg shrimp (Litopenaeus vannamei) against AHPND causing Vibrio parahaemolyticus

2024-04-16T08:39:49+00:00

Whiteleg shrimp (size of 0.55 ± 0.1 g) were fed basic diets either without or with supplementation of recombinant LvCTL3 protein at concentrations of 100; 200 and 500 µg/mL equivalent to 2; 4 and 10 mg/kg. After a 30-day feeding trial, shrimp were collected to measure growth parameters and survival rate, and shrimp hemolymph was also collected for analysis of immune parameters. Then, the shrimp were challenged with Vibrio parahaemolyticus at a concentration of 1 10⁵CFU/mL for 15-day. The results indicated that the growth performance, feed conversion ratio, immune parameters such as total hemocyte count, phenoloxidase, superoxide dismutase, lysozyme enzyme activity, and phagocytic activity of shrimp in the treated groups were significantly higher than those in the control (p < 0.05). Specifically, the dietary supplementation with recombinant LvCTL3 protein at 4 or 10 mg/kg showed better results than the other treatments. After a 15-day bacterial challenged test, the cumulative mortality rate of shrimp in the treated ranged from 20.0 to 36.67% which was significantly lower than that of the control group (63.66%) (p < 0.05).

Status of cemetery and graveyard land clearance of the southwest urban area project in Nhon Ly commune, Nhon Hoi economic area, Binh Dinh province

2024-03-22T08:24:39+00:00

This study used data collection methods, expert methods, and methods of synthesizing, processing, and analyzing data and maps and charts, with a management and practical approach combined with an approach from a cultural perspective. The research results show that the Southwest urban area project in Nhon Ly commune has 1,100 graves affected, with 78.93% of the cemetery and graveyard land area recovered. People whose graves are subject to relocation will be compensated, supported with graves, architectural objects, and grave moving expenses, and will be allocated land to build graves in the reburial area. Interview results show that 100% of people are satisfied with the evaluation criteria of implementation personnel, process, time, and grave relocation plan. However, the standard deviation CS1, CS2 with CV>1 shows that households' opinions on compensation and support costs do not have a high consensus. On the other hand, the project is behind schedule. The study has proposed solutions that have implications for supplementing legal policies and law enforcement organizations to improve the effectiveness of cemetery and graveyard land clearance in the study area.

Developing new type agricultural cooperatives under the cooperative law 2012 at Phu Ho cooperative, Phu Vang district, Thua Thien Hue province

2024-03-04T04:10:34+00:00

The research aims to investigate the new type of agricultural cooperative after operating under the Law on Cooperatives (Cooperatives) in 2012. Statistical analysis method was used to describe and clarify research data and use the technology. Venn diagram tool to analyze the relationships between cooperatives and the roles of participating parties. The results show that Phu Ho Cooperative is the first unit in the district to operate under the Cooperative Law in 2012 and has made improvements in production management, contributing to the development of the Phu Ho rice brand. The study also shows that stakeholders participating in cooperatives all play important roles but at different levels. According to tasks and management functions, the district Department of Agriculture and Rural Development plays the most important role in orienting and promoting cooperatives with good development strategies. In the future, linking businesses will play a long-term strategic role for the cooperative. Local authorities, especially the Commune People's Committee, need to prioritize policies to support cooperatives, focusing on approaching the digital transformation of agricultural cooperatives by market trends according to Directive No. 19/CT-TTg in 2023 to towards a smart, modern, and commercialized agricultural cooperative model.

An assessment of the situation of coconut cultivation in Phu Quoc Island, Kien Giang province, Vietnam

2024-05-20T01:51:45+00:00

Coconut trees (Cocos nucifera L.) are a popular crop on more than 30,000 islands around the world, with many uses and livelihood values for farmers. The study was conducted to evaluate the current status of coconut farming on Phu Quoc Island by interviewing farmer households. The results showed that coconut trees were planted in Cua Duong and Cua Can communes with growing areas ranging from 0.2 to 0.8 hectares per household, mainly in the form of specialised cultivation with two popular coconut varieties which were oil coconut and drinking coconut. Coconut oil varieties ranged in age from 1 to 15 years, flowering time from 4.0 to 5.0 years after planting, and yield from 40 to 60 fruits per tree per year. Drinking coconut varieties were less than 10 years old; flowering time was from 3.0 to 4.0 years after planting; and yielding was from 50 to 100 fruits per tree per year. The form of fruit sales on Phu Quoc Island was mainly drinking coconuts purchased, with harvests ranging from 10 to 15 times per year. The investment cost for coconut gardens of households the business period mainly under 10 millions VND and average incomes under 20 millions VND per hectare per year, respectively.

The status of knowledge capacity of cadastral officials in land management in A Luoi district, Thua Thien Hue province

2024-04-19T10:55:11+00:00

Cadastral officials play an important role in land management at the local level. Therefore, this study aims to investigate the knowledge capacity of cadastral officials in A Luoi district. We used secondary and primary data by interviewing 171 people, including cadastral officials, commune leaders, district level staff and households. In parallel, we used the 5-point Likert scale (from 1-5, corresponding to the level of competence of cadastral officials from very poor to very good) for analysis. The results show that the knowledge capacity of the cadastral officials is only average, with a score of 3.4. In particular, 4 out of a total of 4 knowledge capacities in law, procedures, time and authority implementation of cadastral officials in conciliation and land dispute resolution are at an average level. In contrast, 3 out of a total of 4 knowledge capacities in conditions for issuance of land use rights certificate, procedures, and authority implementation of cadastral officials in issuance of land use rights certificate are at a good level, and 1 knowledge capacity in law is at an average level. The research results highlighted reasons and proposed some solutions to improve the knowledge capacity of cadastral officials in the study area.

Effects of probiotics containing Pediococcus pentosaceus on growth rate, feed efficiency and digestive enzymes of rabbitfish (Siganus guttatus, Bloch 1787)

2024-05-13T09:00:42+00:00

This study was conducted to evaluate the effects of Pediococcus pentacocceus supplemented-diets on growth rate, feed efficiency and digestive enzyme activity of rabbitfish (Siganus guttatus, Bloch 1787). Fingerlings (size of 4.63 ± 0.41 g) were fed with three P. pentacocceus supplemented-diets at different concentrations. Specifically, fish were fed diets supplemented with P. pentosaceus at concentration of 10⁷ CFU/g (T1), 10⁸ CFU/g (T2), 10⁹ CFU/g (T3) and a control diet (CT) without P. pentosaceus supplementation. Each diet was performed on 3 replicates. After 60 days of culture, the results showed that diets supplemented with P. pentosaceus significantly improved the growth rate, feed efficiency and digestive enzyme activity of Siganus guttatus compared to the control. Growth parameters such as final weight (20.06 g), weight gain (331.96%) and growth rate (0.25 g/fish/day) were found in T2 and were significant differences compared to the other treatments (p < 0.05). Similarly, digestive enzyme activities including amylase, lipase and protease were significantly increased in the group of fish fed with feed supplemented with P. pentosaceus compared to the control group. The results indicate that the supplementation of P. pentacocceus (specially, at a concentration of 10⁸CFU/g) into the diets notably improves the growth rate, feed efficiency, and digestive enzyme activity of rabbitfish.

Antifungal ability of Streptomyces murinus NARZ against Colletotrichum gloeosporioides causing anthracnose on postharvest mango

2024-05-30T08:38:16+00:00

Anthracnose, caused by Colletotrichum spp., is among the most prevalent postharvest diseases affecting mango fruit. In this study, the strain Streptomyces murinus NARZ was used to assess its antifungal efficacy against Colletotrichum gloeosporioides D3, which was isolated from mango fruit infected by anthracnose, by measuring the fungal colony diameter in vitro. The results demonstrated that cell free culture of S. murinus NARZ, at ratio ranging from 20% to 50%, exhibited a superior antifungal effect against C. gloeosporioides D3 in PDA medium, achieving a 74.46% inhibitory effect at the ratio of 50%, surpassing the performance of Nystatin (10 µg/mL) or Erythromycin (30 µg/mL). The antifungal ability of cell free culture of S. murinus NARZ against C. gloeosporioides D3 is maintained when treated at temperatures from 30 ^°C to 121 ^°C and pH from 3 to 9. Cell free culture of S. murinus NARZ treated at 30 ^°C and pH = 5 has the best antifungal effect against C. gloeosporioides D3.

Studying on bioproducts and chemical insecticides to control whitefly (Bemisia tabaci Gennadius, 1889) on cassava in Thua Thien Hue

2024-05-31T07:07:58+00:00

Cassava mosaic disease (Sri Lankan Cassava Mosaic Virus) is one of the most dangerous diseases in the world. The whitefly (Besimia tabasi) has been identified as an important vector in the spread and cause of the cassava mosaic disease. To reduce the transmission of cassava mosaic disease in the field, it is necessary to effectively manage the whitely vector, but there is no research on pesticides conducted in Thua Thien Hue. The study on the use of bioproducts and chemical insecticides to control whiteflies in the greenhouse and in the field showed that the Ascend 20SP (Acetamiprid 97%) expressed the highest effectiveness in controlling whiteflies (81.3%). Bioproduct HD2021 was a fair (70.8%) and long-lasting effectiveness (14 days) on controlling whiteflies. For economic efficiency, Novou 3.6 EC (Abamectin 36g/l) controlled whiteflies with the highest profit (8.84 million/ha). The biological product HD2021 has higher profits than the commercial product Hapmisu 20 EC. This study can be widely applied in the field in the coming years.

Species composition and seagrass biomass in Sam Chuon and Ha Trung lagoons, Thua Thien Hue province

2024-06-03T04:11:56+00:00

This research was conducted at Sam Chuon and Ha Trung lagoons, Thua Thien Hue province. The research has identified 5 seagrass species including Halophila beccarii, Zostera japonica, Halodule pinifolia, Halodule uninervis and Ruppia maritima in Sam Chuon and Ha Trung lagoons. The total biomass of seagrass fluctuates seasonally. In the dry season, the total biomass of seagrass at research station S6 is highest at 136.23 g/m² and lowest at research stations H7 and H8 at 0.64 g/m². In the rainy season, sampling station S6 also recorded the highest total biomass with a value of 113.20 g/m², the lowest at two stations H7 and H8 with 0.64 g/m². Halodule uninervis and Ruppia maritima are the dominant species, which appeared in 11/14 stations in total. While Ruppia maritima is only recognized at 3/14 stations in total.