首页 > 最新文献

The Journal of Agriculture and Development最新文献

英文 中文
Optimization of enzymatic hydrolysis condition of edible bird’s nest crumbs by response surface methodology and determination of biochemical characteristics of the hydrolysate 响应面法优化食用燕窝渣酶解条件,测定酶解产物的生化特性
Pub Date : 2023-05-24 DOI: 10.52997/jad.3.03.2023
H. T. Truong, T. T. Vo, Ha T. T. Tran, Toan S. Vo, H. T. Luong, Tho P. Le
Edible bird's nest (EBN) crumbs are the by-product of the bird's nest industry. Despite having lower economic value compared to the original material, EBN crumbs still maintain high protein and carbohydrate content. Therefore, this study aimed to determine the optimal hydrolysis condition for EBN crumbs using protease to achieve the maximum degree of hydrolysis (DH). Plackett Burman design was employed to identify the important factors. The results showed that enzyme loading, temperature and hydrolysis time had the strongest effect on the DH. These factors were subsequently subjected to the optimization study using central composite design (CCD) of response surface methodology (RSM). The optimized conditions for the enzymatic hydrolysis of EBN crumbs were at an enzyme loading of 4%, temperature of 51ºC, and hydrolysis time of 90 min. The experimental DH obtained at the optimized condition (63.5%) was close to the predicted DH (64.1%). The enzymatic hydrolysate prepared at the optimal condition showed relatively high amino acid concentration (151.6 ± 1.29 µg/mL) and radical scavenging activity (64.97 ± 0.79%) compared to the boiled sample with values of only 50.1 ± 2.43 µg/mL and 18.36 ± 0.17%, respectively. The resultant hydrolysate had no effect on some of the microorganisms employed in this study. The EBN crumbs hydrolysate inhibited tyrosinase activity with an IC50 of 70.22 µg/mL, greater than that of boiled EBN (IC50= 108.9 µg/mL). The results indicated that the EBN crumbs hydrolysate could be further applied in the cosmetic industry as a rich source of nutrients and bioactive compounds for the formulation of beauty products.
可食用燕窝(EBN)碎屑是燕窝工业的副产品。尽管与原始材料相比,EBN碎屑的经济价值较低,但仍保持较高的蛋白质和碳水化合物含量。因此,本研究旨在确定利用蛋白酶水解EBN碎屑的最佳条件,以达到最大水解度(DH)。采用Plackett Burman设计来确定重要因素。结果表明,酶载量、温度和水解时间对DH的影响最大。然后利用响应面法的中心复合设计(CCD)对这些因素进行优化研究。优化后的酶解条件为酶量为4%,酶解温度为51℃,酶解时间为90 min。在优化条件下得到的实验DH(63.5%)与预测DH(64.1%)接近。在最佳条件下制备的酶解物氨基酸浓度为151.6±1.29µg/mL,自由基清除活性为64.97±0.79%,而水煮样品的氨基酸浓度仅为50.1±2.43µg/mL,自由基清除活性为18.36±0.17%。所得到的水解液对本研究中使用的一些微生物没有影响。EBN水解物抑制酪氨酸酶活性的IC50值为70.22µg/mL,高于水煮EBN (IC50= 108.9µg/mL)。结果表明,EBN碎屑水解液可作为美容产品配方中丰富的营养成分和生物活性化合物的来源,进一步应用于化妆品行业。
{"title":"Optimization of enzymatic hydrolysis condition of edible bird’s nest crumbs by response surface methodology and determination of biochemical characteristics of the hydrolysate","authors":"H. T. Truong, T. T. Vo, Ha T. T. Tran, Toan S. Vo, H. T. Luong, Tho P. Le","doi":"10.52997/jad.3.03.2023","DOIUrl":"https://doi.org/10.52997/jad.3.03.2023","url":null,"abstract":"Edible bird's nest (EBN) crumbs are the by-product of the bird's nest industry. Despite having lower economic value compared to the original material, EBN crumbs still maintain high protein and carbohydrate content. Therefore, this study aimed to determine the optimal hydrolysis condition for EBN crumbs using protease to achieve the maximum degree of hydrolysis (DH). Plackett Burman design was employed to identify the important factors. The results showed that enzyme loading, temperature and hydrolysis time had the strongest effect on the DH. These factors were subsequently subjected to the optimization study using central composite design (CCD) of response surface methodology (RSM). The optimized conditions for the enzymatic hydrolysis of EBN crumbs were at an enzyme loading of 4%, temperature of 51ºC, and hydrolysis time of 90 min. The experimental DH obtained at the optimized condition (63.5%) was close to the predicted DH (64.1%). The enzymatic hydrolysate prepared at the optimal condition showed relatively high amino acid concentration (151.6 ± 1.29 µg/mL) and radical scavenging activity (64.97 ± 0.79%) compared to the boiled sample with values of only 50.1 ± 2.43 µg/mL and 18.36 ± 0.17%, respectively. The resultant hydrolysate had no effect on some of the microorganisms employed in this study. The EBN crumbs hydrolysate inhibited tyrosinase activity with an IC50 of 70.22 µg/mL, greater than that of boiled EBN (IC50= 108.9 µg/mL). The results indicated that the EBN crumbs hydrolysate could be further applied in the cosmetic industry as a rich source of nutrients and bioactive compounds for the formulation of beauty products.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"346 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115983511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of uterine microbiota in postpartum dairy cows and barn environment by quantitative PCR technique 应用定量PCR技术研究产后奶牛子宫微生物群及牲口棚环境
Pub Date : 2023-04-30 DOI: 10.52997/jad.4.02.2023
Thuong-Thuong Nguyen, Nhan T. M. Nguyen, T. T. Tran, Tuan V. Vo
The objective of this study was to investigate uterine microbiota in postpartum dairy cows and barn environment by quantitative PCR and to evaluate the correlation between the microbiota in the uterus and barn environment. The study was carried out in 2 seasons of the year: summer (June to August 2017) and winter (October 2017 to March 2018) on Holstein dairy cow farm, Okayama Livestock Research Institute, Japan. A total of 116 samples, including 68 uterine and fecal samples, were collected from 9 cows in summer and 8 cows in winter, at 1 and 2 months after calving. Additionally, 48 samples of barn environment including airborne dust, bedding, feed and water samples were collected 6 times throughout each season. The quantative PCR results showed significant differences (P < 0.05) in the uterine and fecal microbiota of dairy cows at 1 and 2 months after calving. In summer, total bacteria at 2 months postpartum were higher than those at 1 month after calving, while total bacteria were the same in winter (P > 0.05). Bacteroidetes and Firmicutes in uterus and feces between 1 and 2 months after calving were not significantly different in both summer and winter (P > 0.05). The populations of Bacteroidetes, Firmicutes, and total bacteria were found to be highest in bedding compared to those in feed, airborne dust, and water from the barn environment (P < 0.05). Bacteroidetes, Firmicutes and total bacteria in uterus were closely related with those in bedding in summer, however they had the negative correlation with the microbiota of barn environment in winter, especially with fecal microbiota.
本研究旨在采用定量PCR方法对产后奶牛子宫微生物群和牛棚环境进行研究,探讨子宫微生物群与牛棚环境的相关性。研究分夏季(2017年6月至8月)和冬季(2017年10月至2018年3月)两个季节在日本冈山畜牧研究所荷斯坦奶牛场进行。在产犊后1个月和2个月,夏季9头奶牛和冬季8头奶牛共采集116份样品,其中子宫和粪便样品68份。每个季节采集6次谷仓环境样品48份,包括空气粉尘、床上用品、饲料和水样。定量PCR结果显示,产犊后1个月和2个月奶牛子宫和粪便微生物群差异显著(P < 0.05)。夏季产后2个月细菌总数高于产犊后1个月,冬季细菌总数与产后2个月差异无统计学意义(P > 0.05)。产犊后1 ~ 2个月子宫和粪便中的拟杆菌门和厚壁菌门在夏季和冬季均无显著差异(P > 0.05)。床上用品中拟杆菌门、厚壁菌门和总细菌数量均高于饲料、空气粉尘和畜棚水(P < 0.05)。夏季子宫内拟杆菌门、厚壁菌门和总菌群与床上用品密切相关,冬季与猪舍环境微生物群呈负相关,与粪便微生物群呈负相关。
{"title":"Investigation of uterine microbiota in postpartum dairy cows and barn environment by quantitative PCR technique","authors":"Thuong-Thuong Nguyen, Nhan T. M. Nguyen, T. T. Tran, Tuan V. Vo","doi":"10.52997/jad.4.02.2023","DOIUrl":"https://doi.org/10.52997/jad.4.02.2023","url":null,"abstract":"The objective of this study was to investigate uterine microbiota in postpartum dairy cows and barn environment by quantitative PCR and to evaluate the correlation between the microbiota in the uterus and barn environment. The study was carried out in 2 seasons of the year: summer (June to August 2017) and winter (October 2017 to March 2018) on Holstein dairy cow farm, Okayama Livestock Research Institute, Japan. A total of 116 samples, including 68 uterine and fecal samples, were collected from 9 cows in summer and 8 cows in winter, at 1 and 2 months after calving. Additionally, 48 samples of barn environment including airborne dust, bedding, feed and water samples were collected 6 times throughout each season. The quantative PCR results showed significant differences (P < 0.05) in the uterine and fecal microbiota of dairy cows at 1 and 2 months after calving. In summer, total bacteria at 2 months postpartum were higher than those at 1 month after calving, while total bacteria were the same in winter (P > 0.05). Bacteroidetes and Firmicutes in uterus and feces between 1 and 2 months after calving were not significantly different in both summer and winter (P > 0.05). The populations of Bacteroidetes, Firmicutes, and total bacteria were found to be highest in bedding compared to those in feed, airborne dust, and water from the barn environment (P < 0.05). Bacteroidetes, Firmicutes and total bacteria in uterus were closely related with those in bedding in summer, however they had the negative correlation with the microbiota of barn environment in winter, especially with fecal microbiota.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127955025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of substrates and cultivars on growth, yield and flower quality of potted lisianthus [Eustoma grandiflorum (Raf.) Shinners] in Ho Chi Minh City 基质和品种对盆栽桔梗生长、产量和花品质的影响在胡志明市
Pub Date : 2023-04-30 DOI: 10.52997/jad.3.02.2023
Thanh Q. Nguyen, N. T. Le
Lisianthus cultivars are known for their variety of color, size and shape, especially the development of heat tolerant lisianthus for potted ornamentals. The objective of this study was to determine the suitable substrate for good growth and development of some lisianthus cultivars under conditions in Ho Chi Minh City. The two - factor experiment was arranged in a split-plot design with four replications. Factor A (main plot) included three cultivars (Rosita Pink Picotee, Rosita Jade and Rosita Pure White) and factor B (sub-plot) included three substrates (40% coco peat + 60% carbonized rice husk, 40% coco peat + 40% carbonized rice husk + 20% vermicompost và 40% coco peat + 40% carbonized rice husk + 20% cow manure). The results showed that different cultivars of lisianthus significantly affected growth, yield and flower quality. Rosita Jade lisianthus grown on the substrate 40% coco peat + 40% carbonized rice husk + 20% cow manure showed the highest plant height (43.6 cm) and the most number of leaves (43.5 pairs of leaves/plant). Additionally, the application of the substrate 40% coco peat + 40% carbonized rice husk + 20% vermicompost or 40% coco peat + 40% carbonized rice husk + 20% cow manure showed better growth, yield and flower quality of lisianthus compared to 40% coco peat + 60% carbonized rice husk. However, the interaction between cultivar and substrate did not significantly affect lisianthus in terms of number of branches, stem diameter, number of buds, number of flowers, flower diameter and flower longevity.
鸢尾花品种以其颜色,大小和形状的多样性而闻名,特别是耐热盆栽观赏鸢尾花的开发。本研究的目的是在胡志明市的条件下,确定一些百叶菊品种生长发育的适宜基质。双因素试验采用裂区设计,4个重复。因子A(主小区)包括3个品种(红皮、青玉和纯白),因子B(子小区)包括3个基质(40%椰泥+ 60%碳化稻壳、40%椰泥+ 40%碳化稻壳+ 20%蚯蚓堆肥、40%椰泥+ 40%碳化稻壳+ 20%牛粪)。结果表明,不同品种的百合花对百合花的生长、产量和花品质有显著影响。在40%椰泥炭+ 40%碳化稻壳+ 20%牛粪基质上生长的玉莲株高最高(43.6 cm),叶数最多(43.5对/株)。此外,40%椰子泥炭+ 40%碳化稻壳+ 20%蚯蚓堆肥或40%椰子泥炭+ 40%碳化稻壳+ 20%牛粪处理的百合花生长、产量和花品质均优于40%椰子泥炭+ 60%碳化稻壳。品种与基质的交互作用对桔梗枝数、茎粗、芽数、花数、花径和花寿命的影响不显著。
{"title":"Effects of substrates and cultivars on growth, yield and flower quality of potted lisianthus [Eustoma grandiflorum (Raf.) Shinners] in Ho Chi Minh City","authors":"Thanh Q. Nguyen, N. T. Le","doi":"10.52997/jad.3.02.2023","DOIUrl":"https://doi.org/10.52997/jad.3.02.2023","url":null,"abstract":"Lisianthus cultivars are known for their variety of color, size and shape, especially the development of heat tolerant lisianthus for potted ornamentals. The objective of this study was to determine the suitable substrate for good growth and development of some lisianthus cultivars under conditions in Ho Chi Minh City. The two - factor experiment was arranged in a split-plot design with four replications. Factor A (main plot) included three cultivars (Rosita Pink Picotee, Rosita Jade and Rosita Pure White) and factor B (sub-plot) included three substrates (40% coco peat + 60% carbonized rice husk, 40% coco peat + 40% carbonized rice husk + 20% vermicompost và 40% coco peat + 40% carbonized rice husk + 20% cow manure). The results showed that different cultivars of lisianthus significantly affected growth, yield and flower quality. Rosita Jade lisianthus grown on the substrate 40% coco peat + 40% carbonized rice husk + 20% cow manure showed the highest plant height (43.6 cm) and the most number of leaves (43.5 pairs of leaves/plant). Additionally, the application of the substrate 40% coco peat + 40% carbonized rice husk + 20% vermicompost or 40% coco peat + 40% carbonized rice husk + 20% cow manure showed better growth, yield and flower quality of lisianthus compared to 40% coco peat + 60% carbonized rice husk. However, the interaction between cultivar and substrate did not significantly affect lisianthus in terms of number of branches, stem diameter, number of buds, number of flowers, flower diameter and flower longevity.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133519983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of symptoms and lesions of chickens infected with Eimeria species at low infectious doses 低感染剂量艾美耳球虫感染鸡的症状和损害调查
Pub Date : 2023-04-30 DOI: 10.52997/jad.5.02.2023
H. T. Nguyen, D. Ho, N. Tran, Trang T. Tran, H. Pham, T. T. Nguyen, P. Le
The study aimed to determine the prevalence, symptoms and lesions of coccidiosis in chickens experimentally infected with coccidial oocysts at low doses. Chickens (n = 40, 14 days old, coded MD02 from Minh Du company) were randomly assigned to four equal groups. Group 1, group 2 and group 3 chickens were orally inoculated with 1, 10 & 300 isolated oocysts of Eimeria species, respectively. Meanwhile, the chickens in group 4 were inoculated with phosphate-buffered saline as the control. Chickens in each treatment were raised individually. Fecal samples were collected individually every day after infection for oocysts counting. The results showed that chickens were infected with coccidial oocysts and had typical symptoms and lesions, even chickens were inoculated with one oocyst only. The prevalence of coccidiosis increased gradually with increasing levels of infectious dose, reaching 100% in group 3. The period of oocyst shedding was from 4 to 10 days post-inoculation. The number of oocysts was highest on day 6 post-inoculation. The oocyst counts were positively correlated with the infectious dose. Symptoms of anorexia, lethargy, wing drop and whitish, watery and bloody diarrhea were observed in infected chickens. The major lesions recorded were hemorrhages in the ceca (75 - 100%) and small intestines (100%).
本研究旨在确定低剂量球虫卵囊实验感染鸡球虫病的患病率、症状和病变情况。选取40只14日龄的鸡,编号MD02,取自Minh Du公司,随机分为4组。1组、2组和3组分别口服1、10和300个艾美耳球虫卵囊。同时,第4组鸡接种磷酸盐缓冲生理盐水作为对照。每个处理的鸡单独饲养。感染后每天单独采集粪样进行卵囊计数。结果表明,鸡感染球虫卵囊后,即使只接种一个卵囊,也会出现典型的症状和病变。随着感染剂量的增加,球虫病的患病率逐渐增加,在第3组达到100%。卵囊脱落期为接种后4 ~ 10天。接种后第6天卵囊数最多。卵囊计数与感染剂量呈正相关。感染鸡出现厌食、嗜睡、垂翅、白色水样带血腹泻等症状。记录的主要病变是盲肠出血(75% - 100%)和小肠出血(100%)。
{"title":"Investigation of symptoms and lesions of chickens infected with Eimeria species at low infectious doses","authors":"H. T. Nguyen, D. Ho, N. Tran, Trang T. Tran, H. Pham, T. T. Nguyen, P. Le","doi":"10.52997/jad.5.02.2023","DOIUrl":"https://doi.org/10.52997/jad.5.02.2023","url":null,"abstract":"The study aimed to determine the prevalence, symptoms and lesions of coccidiosis in chickens experimentally infected with coccidial oocysts at low doses. Chickens (n = 40, 14 days old, coded MD02 from Minh Du company) were randomly assigned to four equal groups. Group 1, group 2 and group 3 chickens were orally inoculated with 1, 10 & 300 isolated oocysts of Eimeria species, respectively. Meanwhile, the chickens in group 4 were inoculated with phosphate-buffered saline as the control. Chickens in each treatment were raised individually. Fecal samples were collected individually every day after infection for oocysts counting. The results showed that chickens were infected with coccidial oocysts and had typical symptoms and lesions, even chickens were inoculated with one oocyst only. The prevalence of coccidiosis increased gradually with increasing levels of infectious dose, reaching 100% in group 3. The period of oocyst shedding was from 4 to 10 days post-inoculation. The number of oocysts was highest on day 6 post-inoculation. The oocyst counts were positively correlated with the infectious dose. Symptoms of anorexia, lethargy, wing drop and whitish, watery and bloody diarrhea were observed in infected chickens. The major lesions recorded were hemorrhages in the ceca (75 - 100%) and small intestines (100%).","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"31 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113975888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of the transfer of land use rights in Ba Ria city, Ba Ria - Vung Tau province 巴里亚省巴里亚市土地使用权出让评估
Pub Date : 2023-04-30 DOI: 10.52997/jad.1.02.2023
T. H. Pham, N. T. K. Le
The objective of the research was to evaluate the current situation of land use right transfer in Ba Ria city and proposed solutions to improve the effectiveness of the land use right transfer process. The study collected secondary data and conducted interviews with land users, real estate businesses, and individuals and organizations involved in the land use right transfer process in Ba Ria city. The study results showed that the number of land use right transfer cases increased significantly from 2016 to 2019, and the quality and attitude of the land use right transfer procedures were improved. However, there were still many limitations that need to be addressed, such as slow processing of documents, delayed issuance of certificates, inadequate public services, multiple trips required to complete procedures, limited and formalized public information, confusion, and complex financial and legal regulations regarding land use rights, causing difficulties for the land users to prepare their documents.
本研究的目的是评估巴里亚市土地使用权流转的现状,并提出提高土地使用权流转有效性的对策。该研究收集了二手数据,并对巴里亚市土地使用者、房地产企业以及参与土地使用权出让过程的个人和组织进行了访谈。研究结果表明,2016 - 2019年土地使用权出让案件数量显著增加,土地使用权出让程序质量和态度有所提高。但是,仍有许多限制需要解决,例如文件处理缓慢、证书发放延迟、公共服务不足、办理手续需要多次旅行、公共信息有限和正式、混乱和有关土地使用权的财务和法律规定复杂,这些都给土地使用者准备文件造成困难。
{"title":"Evaluation of the transfer of land use rights in Ba Ria city, Ba Ria - Vung Tau province","authors":"T. H. Pham, N. T. K. Le","doi":"10.52997/jad.1.02.2023","DOIUrl":"https://doi.org/10.52997/jad.1.02.2023","url":null,"abstract":"The objective of the research was to evaluate the current situation of land use right transfer in Ba Ria city and proposed solutions to improve the effectiveness of the land use right transfer process. The study collected secondary data and conducted interviews with land users, real estate businesses, and individuals and organizations involved in the land use right transfer process in Ba Ria city. The study results showed that the number of land use right transfer cases increased significantly from 2016 to 2019, and the quality and attitude of the land use right transfer procedures were improved. However, there were still many limitations that need to be addressed, such as slow processing of documents, delayed issuance of certificates, inadequate public services, multiple trips required to complete procedures, limited and formalized public information, confusion, and complex financial and legal regulations regarding land use rights, causing difficulties for the land users to prepare their documents.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125783228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of current status and disease progress of bronzing on “Thai” jackfruit (Artocarpus heterophyllus Lam.) in Tien Giang province 江省“泰”菠萝蜜(Artocarpus heterophyllus Lam.)烫金现状及病害进展调查
Pub Date : 2023-04-30 DOI: 10.52997/jad.2.02.2023
H. Vo
Tien Giang is one of the Mekong Delta's largest jackfruit-growing provinces, with a total cultivation area of jackfruit of approximately 13,141.09 ha. Bronzing of jackfruit appeared on Thai jackfruit and caused significant damage to growers, however, the information about the disease is still limited. In this study, we assessed the status of bronzing diseases on Thai jackfruit in Tien Giang province via direct interviews with farmers, mapped the disease distribution by Google Earth, and recorded the disease appearance on Thai jackfruit during the year's two main seasons. Bronzing of Thai jackfruit occurred in all growing areas in Tien Giang during both rainy and sunny seasons, causing damage with an average disease prevalence in inquired regions from 5.29% to 10.19% in sunny season, and from 25.43% to 33.05% in rainy season. The disease prevalence was higher in the rainy season. Most farmers showed that bronzing of jackfruit could be identified by external symptoms of the fruit, such as abnormalities in the left stalk, fruit color, shape, and spines, and confirmed by the result of appearance investigation of bronzing on Thai jackfruit during rainy and sunny seasons of the year 2022. Fungicide application and fruit selection at the early stage of fruit development could prevent the disease. According to the disease progress, bronzing of jackfruit appeared from fruit set to harvest and the disease prevalence reached 55.56% in sunny season and 88.89% in rainy season at 20 days after fruit set.
天江是湄公河三角洲最大的菠萝蜜种植省份之一,菠萝蜜的种植面积约为13,141.09公顷。在泰国菠萝蜜上出现了菠萝蜜褐变,给种植者造成了重大损失,然而,关于这种疾病的信息仍然有限。本研究通过对农民的直接访谈,评估了天江省泰铢菠萝蜜的褐变病状况,利用谷歌Earth绘制了病害分布图,并记录了泰铢菠萝蜜在一年中的两个主要季节的病害发生情况。天江省所有产区均发生梅雨期和梅雨期泰国菠萝蜜褐变,造成危害,调查地区平均患病率在梅雨期为5.29% ~ 10.19%,在梅雨期为25.43% ~ 33.05%。发病率在雨季较高。大多数农民表明,菠萝蜜的烫金可以通过果实的外部症状来识别,如左柄、果实颜色、形状和刺的异常,并通过2022年雨季和晴天对泰国菠萝蜜烫金的外观调查结果得到证实。在果实发育早期施用杀菌剂和选择果实可预防此病。从发病进程看,菠萝蜜从坐果到采收均出现褐变,坐果后20 d,阳季患病率为55.56%,雨季患病率为88.89%。
{"title":"Investigation of current status and disease progress of bronzing on “Thai” jackfruit (Artocarpus heterophyllus Lam.) in Tien Giang province","authors":"H. Vo","doi":"10.52997/jad.2.02.2023","DOIUrl":"https://doi.org/10.52997/jad.2.02.2023","url":null,"abstract":"Tien Giang is one of the Mekong Delta's largest jackfruit-growing provinces, with a total cultivation area of jackfruit of approximately 13,141.09 ha. Bronzing of jackfruit appeared on Thai jackfruit and caused significant damage to growers, however, the information about the disease is still limited. In this study, we assessed the status of bronzing diseases on Thai jackfruit in Tien Giang province via direct interviews with farmers, mapped the disease distribution by Google Earth, and recorded the disease appearance on Thai jackfruit during the year's two main seasons. Bronzing of Thai jackfruit occurred in all growing areas in Tien Giang during both rainy and sunny seasons, causing damage with an average disease prevalence in inquired regions from 5.29% to 10.19% in sunny season, and from 25.43% to 33.05% in rainy season. The disease prevalence was higher in the rainy season. Most farmers showed that bronzing of jackfruit could be identified by external symptoms of the fruit, such as abnormalities in the left stalk, fruit color, shape, and spines, and confirmed by the result of appearance investigation of bronzing on Thai jackfruit during rainy and sunny seasons of the year 2022. Fungicide application and fruit selection at the early stage of fruit development could prevent the disease. According to the disease progress, bronzing of jackfruit appeared from fruit set to harvest and the disease prevalence reached 55.56% in sunny season and 88.89% in rainy season at 20 days after fruit set.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"250 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134056865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The relationships of female size with reproductive parameters, egg diameter and larval growth of striped catfish (Pangasianodon hypophthalmus) 斑纹鲶鱼雌体大小与生殖参数、卵径及幼虫生长的关系
Pub Date : 2023-02-28 DOI: 10.52997/jad.4.01.2023
Yen T Duong, Thu A. Ta
{"title":"The relationships of female size with reproductive parameters, egg diameter and larval growth of striped catfish (Pangasianodon hypophthalmus)","authors":"Yen T Duong, Thu A. Ta","doi":"10.52997/jad.4.01.2023","DOIUrl":"https://doi.org/10.52997/jad.4.01.2023","url":null,"abstract":"","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132285143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of type, dose and number of application of fertilizer on yield of sugarcane on sloping land in central highlands 施肥类型、用量和次数对中部高原坡耕地甘蔗产量的影响
Pub Date : 2023-02-28 DOI: 10.52997/jad.2.01.2023
T. V. Pham, H. Do, S. V. Tran, Thong C. Duong, T. T. Nguyen, Tuong V. Do, Khoa B. Tran, Kieu V. Vu, T. V. Tran, Nhi T. H. Nguyen, ThuyLinh Pham
{"title":"Effects of type, dose and number of application of fertilizer on yield of sugarcane on sloping land in central highlands","authors":"T. V. Pham, H. Do, S. V. Tran, Thong C. Duong, T. T. Nguyen, Tuong V. Do, Khoa B. Tran, Kieu V. Vu, T. V. Tran, Nhi T. H. Nguyen, ThuyLinh Pham","doi":"10.52997/jad.2.01.2023","DOIUrl":"https://doi.org/10.52997/jad.2.01.2023","url":null,"abstract":"","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121322292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of the physiological and biochemical changes by developmental stages of “Nhan Hau” persimmon fruits (Diospyros kaki L.f.) grown in Thanh Hoa province 清化省“仁好”柿果实发育阶段生理生化变化的研究
Pub Date : 2023-02-28 DOI: 10.52997/jad.6.01.2023
Trong V. Le, Phuong-Thao Ha, Quyen T. Lo
{"title":"Investigation of the physiological and biochemical changes by developmental stages of “Nhan Hau” persimmon fruits (Diospyros kaki L.f.) grown in Thanh Hoa province","authors":"Trong V. Le, Phuong-Thao Ha, Quyen T. Lo","doi":"10.52997/jad.6.01.2023","DOIUrl":"https://doi.org/10.52997/jad.6.01.2023","url":null,"abstract":"","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122920863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of correlative equations to “filling up” the water quality monitoring data for assessment of the quality and self-cleaning capacity of water 应用相关方程对水质监测数据进行“填充”,评价水质和自净能力
Pub Date : 2023-02-28 DOI: 10.52997/jad.5.01.2023
H. V. Bui, D. Nguyen
{"title":"Application of correlative equations to “filling up” the water quality monitoring data for assessment of the quality and self-cleaning capacity of water","authors":"H. V. Bui, D. Nguyen","doi":"10.52997/jad.5.01.2023","DOIUrl":"https://doi.org/10.52997/jad.5.01.2023","url":null,"abstract":"","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132309010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
The Journal of Agriculture and Development
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1