首页 > 最新文献

Journal of Fujian Agriculture and Forestry University最新文献

英文 中文
Synthesis of nanoparticles of Poly (ethyleneimine) and their characterization by transmission electron microscopy, thin layer chromatography, and infrared spectroscopy 聚亚胺纳米粒子的合成及其透射电镜、薄层色谱和红外光谱表征
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48477
R. Bashyal
Intracellular gene delivery alters the expression of a gene and corrects a defective gene that may be the cause of a disease or a disorder. Nonviral gene delivery is more appropriate than viral-mediated due to their low cytotoxicity and immunogenicity. Amongst these, polycationic nanoparticles i.e. Polyethyleneimine (PEI) were used most successfully. The PEGylation of such cationic polymer reduces its cytotoxicity. Different molecular weight poly (ethylene glycol) was used for the PEGylation of such cationic nanoparticles which have an individual effect. For this purpose, the PEG is esterified, which was then reacted with a cationic polymer. Four different molecular weights of PEG were used. The size of nanoparticles so formed depends upon the molecular weight of PEG. So formed nanoparticles were dialyzed, lyophilized, and then characterized by IR and TEM. The nanoparticles so formed are directly affected by the different molecular weights of PEG. Higher the molecular weights of PEG smaller size of nanoparticles so formed but only up to a limited extent. The decreasing order of nanoparticles as an increment of molecular weight of PEG was found as a -0.85 coefficient of correlation. The smaller-sized nanoparticles have higher transfection efficiency than larger-sized nanoparticles. So, the higher the molecular weight of PEG higher will be the transfection efficiency.
细胞内基因传递改变了基因的表达,并纠正了可能导致疾病或失调的缺陷基因。非病毒基因传递比病毒介导更合适,因为它们具有低细胞毒性和免疫原性。其中,聚阳离子纳米粒子即聚乙烯亚胺(PEI)的应用最为成功。这种阳离子聚合物的聚乙二醇化降低了其细胞毒性。采用不同分子量的聚乙二醇对这类阳离子纳米粒子进行聚乙二醇化修饰,其效果各不相同。为此,将聚乙二醇酯化,然后与阳离子聚合物反应。使用了四种不同分子量的聚乙二醇。形成的纳米颗粒的大小取决于聚乙二醇的分子量。对所形成的纳米颗粒进行透析、冻干,并用红外光谱和透射电镜对其进行表征。不同分子量的聚乙二醇直接影响纳米颗粒的形成。聚乙二醇的分子量越高,形成的纳米颗粒尺寸越小,但只是在有限的程度上。随着PEG分子量的增加,纳米颗粒的数量呈递减趋势,相关系数为-0.85。粒径较小的纳米颗粒比粒径较大的纳米颗粒转染效率更高。因此,PEG分子量越大,转染效率越高。
{"title":"Synthesis of nanoparticles of Poly (ethyleneimine) and their characterization by transmission electron microscopy, thin layer chromatography, and infrared spectroscopy","authors":"R. Bashyal","doi":"10.3126/jafu.v5i1.48477","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48477","url":null,"abstract":"Intracellular gene delivery alters the expression of a gene and corrects a defective gene that may be the cause of a disease or a disorder. Nonviral gene delivery is more appropriate than viral-mediated due to their low cytotoxicity and immunogenicity. Amongst these, polycationic nanoparticles i.e. Polyethyleneimine (PEI) were used most successfully. The PEGylation of such cationic polymer reduces its cytotoxicity. Different molecular weight poly (ethylene glycol) was used for the PEGylation of such cationic nanoparticles which have an individual effect. For this purpose, the PEG is esterified, which was then reacted with a cationic polymer. Four different molecular weights of PEG were used. The size of nanoparticles so formed depends upon the molecular weight of PEG. So formed nanoparticles were dialyzed, lyophilized, and then characterized by IR and TEM. The nanoparticles so formed are directly affected by the different molecular weights of PEG. Higher the molecular weights of PEG smaller size of nanoparticles so formed but only up to a limited extent. The decreasing order of nanoparticles as an increment of molecular weight of PEG was found as a -0.85 coefficient of correlation. The smaller-sized nanoparticles have higher transfection efficiency than larger-sized nanoparticles. So, the higher the molecular weight of PEG higher will be the transfection efficiency.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75803477","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
Analysis of floor price trend of raw coffee in Nepal 尼泊尔生咖啡底价走势分析
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48435
G. Luitel, B. Acharya
Nepalese coffee industry has passed a long way of production, processing and marketing. Coffee as a high value crop with floor price helped farmers to sustain their production. This study reviews the historic approaches of floor price fixation system and its trend using secondary data of National Tea and Coffee Development Board (NTCDB). The floor prices were averaged and converted into Green Bean Equivalent (GBE) units and analysed in different time zones. It was found that the floor price fixation system has been changing over years. The floor price was roughly based on transportation cost in earlier years. Grading-based price fixation of fresh cherry came into practice during 2002/03-2005/06. Eventually, more precise and practicable floor price measures were introduced for different quality grades, which was practiced for almost a decade from 2006/07 to 2014/15. Starting from 2015/16, previous approach was slightly modified based on organic certification which is still in practice. Moreover, it was found that the price of raw coffee has increased notably over years. While the price index of raw coffee in 1994/95 was merely 26.37, it has increased by more than nine times to 243.12 in 2021/22. Since higher priced raw coffee will not make it competitive in the global market, the floor price should be adjusted based on international market trend, considering macroeconomic parameters as well.
尼泊尔咖啡产业经历了漫长的生产、加工和销售过程。咖啡作为一种具有底价的高价值作物,帮助农民维持生产。本文利用国家茶和咖啡发展局的二手数据,回顾了最低限价制度的历史沿革及其趋势。楼面价格被平均并转换成绿豆当量(GBE)单位,并在不同时区进行分析。调查发现,最低限价制度多年来一直在发生变化。最低价格大致是根据早些年的运输成本计算的。2002/03-2005/06年实行鲜果分级定价。最终,我们针对不同品质等级推出了更精确和切实可行的楼面价格措施,从2006/07至2014/15,我们实施了近十年。从2015/16年开始,之前的方法在有机认证的基础上略有修改,目前仍在实践中。此外,研究发现,多年来,生咖啡的价格明显上涨。生咖啡的价格指数在1994/95年仅为26.37,而在2021/22年上涨了9倍多,达到243.12。生咖啡的价格越高,在国际市场上就越没有竞争力,所以最低价格应该根据国际市场趋势进行调整,同时考虑宏观经济参数。
{"title":"Analysis of floor price trend of raw coffee in Nepal","authors":"G. Luitel, B. Acharya","doi":"10.3126/jafu.v5i1.48435","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48435","url":null,"abstract":"Nepalese coffee industry has passed a long way of production, processing and marketing. Coffee as a high value crop with floor price helped farmers to sustain their production. This study reviews the historic approaches of floor price fixation system and its trend using secondary data of National Tea and Coffee Development Board (NTCDB). The floor prices were averaged and converted into Green Bean Equivalent (GBE) units and analysed in different time zones. It was found that the floor price fixation system has been changing over years. The floor price was roughly based on transportation cost in earlier years. Grading-based price fixation of fresh cherry came into practice during 2002/03-2005/06. Eventually, more precise and practicable floor price measures were introduced for different quality grades, which was practiced for almost a decade from 2006/07 to 2014/15. Starting from 2015/16, previous approach was slightly modified based on organic certification which is still in practice. Moreover, it was found that the price of raw coffee has increased notably over years. While the price index of raw coffee in 1994/95 was merely 26.37, it has increased by more than nine times to 243.12 in 2021/22. Since higher priced raw coffee will not make it competitive in the global market, the floor price should be adjusted based on international market trend, considering macroeconomic parameters as well.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79536059","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
Contribution of marginal land and indigenous crops on food security: A case of eastern Chitwan, Nepal 边际土地和本地作物对粮食安全的贡献:尼泊尔奇旺东部的一个案例
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48463
R. Timilsina, G. Ojha, P. B. Nepali, U. Tiwari
People have utilized indigenous and underutilized crops available in the marginal land for their food. However, little is known about the contribution of these crops to food security. To assess the contribution of these crops to food security of local people, a survey was done with 107 respondents selected from community forest users of the eastern Chitwan of Nepal in 2020. The findings revealed that fiddle head fern (Matteuccia struthiopteris L.), air potato (Dioscorea bulbifera L.), stinging nettle (Urtica dioica L.), and white yam (Dioscorea alata L.) were consumed mostly compared to other indigenous and underutilized crops. Community forest was a major source of underutilized crops followed by marginal land. Though air potato was available only for four months, its contribution to food security was higher than the other crops. Indigenous crops were found gradually disappearing due to producers' poor access to land to cultivate, misuse of land, and ineffective implementation of the Land Use Act. Further, local people’s engagement on off-farm employment had increased marginal land fallow. The study found that the prices of indigenous and underutilized crops offer income-generating opportunities. Thus, a marginal land use plan considering indigenous and underutilized crops is needed for both food security and income of local people.
人们利用边缘土地上的土著和未充分利用的作物作为食物。然而,人们对这些作物对粮食安全的贡献知之甚少。为了评估这些作物对当地人民粮食安全的贡献,我们于2020年对尼泊尔奇旺省东部社区森林用户中选出的107名受访者进行了一项调查。结果表明,与其他本地和未充分利用的作物相比,人们对蕨类植物(Matteuccia struthiopteris L.)、空气马铃薯(Dioscorea bulbifera L.)、刺荨麻(Urtica dioica L.)和白山药(Dioscorea alata L.)的消耗最多。社区森林是未充分利用作物的主要来源,其次是边际土地。虽然空气马铃薯的供应期只有四个月,但它对粮食安全的贡献高于其他作物。由于生产者难以获得土地耕种、滥用土地以及《土地使用法》执行不力,土著作物逐渐消失。此外,当地人参与非农就业增加了边际土地休耕。研究发现,本地和未充分利用的作物的价格提供了创收机会。因此,考虑到土著和未充分利用的作物的边际土地利用计划对于当地人民的粮食安全和收入都是必要的。
{"title":"Contribution of marginal land and indigenous crops on food security: A case of eastern Chitwan, Nepal","authors":"R. Timilsina, G. Ojha, P. B. Nepali, U. Tiwari","doi":"10.3126/jafu.v5i1.48463","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48463","url":null,"abstract":"People have utilized indigenous and underutilized crops available in the marginal land for their food. However, little is known about the contribution of these crops to food security. To assess the contribution of these crops to food security of local people, a survey was done with 107 respondents selected from community forest users of the eastern Chitwan of Nepal in 2020. The findings revealed that fiddle head fern (Matteuccia struthiopteris L.), air potato (Dioscorea bulbifera L.), stinging nettle (Urtica dioica L.), and white yam (Dioscorea alata L.) were consumed mostly compared to other indigenous and underutilized crops. Community forest was a major source of underutilized crops followed by marginal land. Though air potato was available only for four months, its contribution to food security was higher than the other crops. Indigenous crops were found gradually disappearing due to producers' poor access to land to cultivate, misuse of land, and ineffective implementation of the Land Use Act. Further, local people’s engagement on off-farm employment had increased marginal land fallow. The study found that the prices of indigenous and underutilized crops offer income-generating opportunities. Thus, a marginal land use plan considering indigenous and underutilized crops is needed for both food security and income of local people.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88310910","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
Effect of Trichoderma isolates on Sclerotium rolfsii Sacc. 木霉分离株对罗氏菌核菌的影响。
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48478
P. Adhikari, S. Shrestha, H. Manandhar, S. Marahatta
Sclerotium rolfsii Sacc. is one of the most important plant pathogens commonly causing root rot, stem rot, wilt and foot rot in various crop species. A wide range of host, profuse mycelial growth, and ability to produce persistent sclerotia makes them difficult to control. Biological control using Trichoderma could provide a sustainable tool for the management of diseases caused by S. rolfsii. One hundred four Trichoderma isolates were evaluated against S. rolfsii in vitro by dual culture. Of them, 30 Trichoderma isolates found effective were selected to study parasitization of sclerotia of S. rolfsii in vitro. Similarly, four Trichoderma isolates found effective in vitro were used to study their ability to parasitize sclerotia of the pathogen in soil. Trichoderma isolates varied significantly (p<0.001) for both the inhibition percentage and biocontrol index. However, they showed a differential effect as Trichoderma isolate T73, Forest soil had highest inhibition (96.96%), while Trichoderma isolate T49, Bhaktapur showed the highest bio-control index (99) against S. rolfsii. Trichoderma isolates T49, Bhaktapur and T87, Forest soil showed promising results in controlling S. rolfsii in vitro. Both isolates were also able to parasitize and reduce the germination of sclerotia in the soil. The present study demonstrated that selected Trichoderma had potential in controlling Sclerotium rolfsii.
菌核菌。是最重要的植物病原体之一,通常引起各种作物的根腐病、茎腐病、枯萎病和足腐病。寄主范围广,菌丝生长丰富,菌核持久,使其难以控制。利用木霉进行生物防治可以为罗氏霉病的防治提供一种可持续的手段。采用双培养法对104株木霉进行了体外抗罗尔夫氏沙门氏菌的鉴定。选取30株有效的木霉分离株,对罗氏木霉菌核的体外寄生情况进行了研究。同样地,4个在体外发现有效的木霉分离株被用来研究它们在土壤中寄生病原菌菌核的能力。木霉的抑菌率和生物防治指数差异显著(p<0.001)。森林土壤分离木霉T73的抑菌效果最高(96.96%),森林土壤分离木霉T49的抑菌效果最高(99)。森林土壤中分离的木霉T49、Bhaktapur和T87对罗氏木霉有较好的体外防治效果。这两种菌株都能寄生并降低菌核在土壤中的萌发。本研究表明,精选木霉具有防治罗氏菌核病的潜力。
{"title":"Effect of Trichoderma isolates on Sclerotium rolfsii Sacc.","authors":"P. Adhikari, S. Shrestha, H. Manandhar, S. Marahatta","doi":"10.3126/jafu.v5i1.48478","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48478","url":null,"abstract":"Sclerotium rolfsii Sacc. is one of the most important plant pathogens commonly causing root rot, stem rot, wilt and foot rot in various crop species. A wide range of host, profuse mycelial growth, and ability to produce persistent sclerotia makes them difficult to control. Biological control using Trichoderma could provide a sustainable tool for the management of diseases caused by S. rolfsii. One hundred four Trichoderma isolates were evaluated against S. rolfsii in vitro by dual culture. Of them, 30 Trichoderma isolates found effective were selected to study parasitization of sclerotia of S. rolfsii in vitro. Similarly, four Trichoderma isolates found effective in vitro were used to study their ability to parasitize sclerotia of the pathogen in soil. Trichoderma isolates varied significantly (p<0.001) for both the inhibition percentage and biocontrol index. However, they showed a differential effect as Trichoderma isolate T73, Forest soil had highest inhibition (96.96%), while Trichoderma isolate T49, Bhaktapur showed the highest bio-control index (99) against S. rolfsii. Trichoderma isolates T49, Bhaktapur and T87, Forest soil showed promising results in controlling S. rolfsii in vitro. Both isolates were also able to parasitize and reduce the germination of sclerotia in the soil. The present study demonstrated that selected Trichoderma had potential in controlling Sclerotium rolfsii.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86206301","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
Factors affecting adoption of major adaptation strategies against drought among summer vegetables growers in central Nepal 影响尼泊尔中部夏季蔬菜种植者采取主要抗旱适应战略的因素
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48470
A. Subedi, D. Dangol, S. Dhakal, U. Tiwari
Climate change is one of the critical challenges in the field of agriculture and drought is one among the important effects of global climate change affecting summer vegetables in central Nepal. A research was conducted in central Nepal to seek out factors affecting adaptation strategies against drought among summer vegetables growers. A semi-structured questionnaire was used to collect primary data from 300 households adjoining Trishuli Narayani River corridor equally divided among three districts namely Chitwan, Dhading and Nuwakot. Data obtained were analyzed using descriptive statistic and logit model. Irrigation canal, choosing appropriate crop varieties, mulching, adjusting planting time and using organic manure were identified important adaptation strategies for drought within the study areas. Distance of vegetable farm from river, knowledge of climate change with the respondents, training provided to farmers on vegetable farming, access to cooperative was seen significantly affecting farmers to settle on those adaptation strategies against drought. Adopting different practices against drought found to be correlated with topography or agro climatic regions as well. Nuwakot and Dhading with high altitude got less chance of using organic manure and mulching practice in comparison with Chitwan but its opposite with other adaptation practices like adjusting planting times, changing crop varieties and using irrigation canal. Policy makers and extension workers should focus more on knowledge input based on topography or agroclimatic regions as well about climate change adaptation practices among the farmers, hence providing more trainings on vegetable farming, increasing the access to cooperatives and other organizations could ultimately help to strengthen vegetable growers to adopt those adaptation practices.
气候变化是农业领域的重大挑战之一,干旱是影响尼泊尔中部夏季蔬菜的全球气候变化的重要影响之一。在尼泊尔中部进行了一项研究,以寻找影响夏季蔬菜种植者适应干旱策略的因素。采用半结构化问卷收集了Trishuli Narayani河走廊附近300户家庭的原始数据,这些家庭平均分布在Chitwan、Dhading和Nuwakot三个地区。所得数据采用描述性统计和logit模型进行分析。灌溉渠道、选择适宜的作物品种、覆盖、调整种植时间和施用有机肥是研究区干旱适应的重要策略。蔬菜农场与河流的距离、受访者对气候变化的了解、向农民提供的蔬菜种植培训、加入合作社的机会,都被认为是影响农民制定抗旱适应战略的重要因素。采取不同的抗旱措施被发现与地形或农业气候区域有关。与Chitwan相比,Nuwakot和Dhading高海拔地区使用有机肥料和覆盖的机会较少,但与其他适应措施相反,如调整种植时间,改变作物品种和使用灌溉渠。政策制定者和推广人员应该更多地关注基于地形或农业气候区域的知识投入,以及农民适应气候变化的做法,因此提供更多的蔬菜种植培训,增加合作社和其他组织的机会,最终有助于加强蔬菜种植者采用这些适应做法。
{"title":"Factors affecting adoption of major adaptation strategies against drought among summer vegetables growers in central Nepal","authors":"A. Subedi, D. Dangol, S. Dhakal, U. Tiwari","doi":"10.3126/jafu.v5i1.48470","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48470","url":null,"abstract":"Climate change is one of the critical challenges in the field of agriculture and drought is one among the important effects of global climate change affecting summer vegetables in central Nepal. A research was conducted in central Nepal to seek out factors affecting adaptation strategies against drought among summer vegetables growers. A semi-structured questionnaire was used to collect primary data from 300 households adjoining Trishuli Narayani River corridor equally divided among three districts namely Chitwan, Dhading and Nuwakot. Data obtained were analyzed using descriptive statistic and logit model. Irrigation canal, choosing appropriate crop varieties, mulching, adjusting planting time and using organic manure were identified important adaptation strategies for drought within the study areas. Distance of vegetable farm from river, knowledge of climate change with the respondents, training provided to farmers on vegetable farming, access to cooperative was seen significantly affecting farmers to settle on those adaptation strategies against drought. Adopting different practices against drought found to be correlated with topography or agro climatic regions as well. Nuwakot and Dhading with high altitude got less chance of using organic manure and mulching practice in comparison with Chitwan but its opposite with other adaptation practices like adjusting planting times, changing crop varieties and using irrigation canal. Policy makers and extension workers should focus more on knowledge input based on topography or agroclimatic regions as well about climate change adaptation practices among the farmers, hence providing more trainings on vegetable farming, increasing the access to cooperatives and other organizations could ultimately help to strengthen vegetable growers to adopt those adaptation practices.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"BC-29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84947337","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
Response of cucumber (Cucumis sativus L. Cv. Bhaktapur local) to the application of plant growth regulators in plastic tunnel 黄瓜(Cucumis sativus L. Cv.)Bhaktapur地区)对植物生长调节剂在塑料隧道中的应用
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48445
K. Dahal, K. Dahal
The field experiment was conducted to know the yield performance of cucumber var. Bhaktapur Local with the application of plant growth regulators (PGRs) in the farmers’ field of Lamjung, Nepal during September to November, 2013. Five treatments (Four PGRs; NAA @10 ppm, GA3 @ 50ppm, GA3 @100ppm, MH@ 60ppm and distilled water as control) were replicated six times under walk-in plastic tunnel. The experiment was laid out in randomized complete block design. The first 30 flowers of each plant were used for the observation. PGRs were sprayed in 2-4 true leaf stage of seedling, 20 days after first spray and 10 days after second spray. The research revealed that NAA @ 10 ppm had higher effect in sex expression, fruit set and yield than rest of the treatments. GA3 @ 100 ppm had significantly higher number of male flowers and more vine growth than other treatments. Branch per plant was obtained as the highest with MH @60 ppm followed by NAA @10 ppm. The marketable fruit yield was significant with NAA @10 ppm followed by MH@ 60 ppm, GA3 @50 ppm, GA3 @100 ppm than control. It is concluded that thermo-sensitive variety of cucumber Bhaktapur Local can be grown with the use of plant growth regulators particularly, NAA@ 10 ppm, under walk-in plastic tunnels during the autumn-winter season in the mid hills of Nepal. The research further indicated that cucumber can be a profitable and a potential agriculture enterprise for the area.
2013年9 - 11月,在尼泊尔Lamjung农民田间进行了植物生长调节剂(pgr)对黄瓜品种Bhaktapur Local产量的影响试验。5个治疗组(4个pgr;NAA @ 10ppm, GA3 @ 50ppm, GA3 @100ppm, MH@ 60ppm和蒸馏水作为对照)在步入式塑料隧道中重复了6次。试验采用完全随机区组设计。每株植物的前30朵花用于观察。在幼苗真叶期2 ~ 4天、第一次喷药后20天、第二次喷药后10天喷pgr。研究表明,NAA @ 10 ppm处理对雌雄表达、坐果和产量的影响高于其他处理。GA3 @ 100 ppm处理的雄花数量和藤蔓生长量显著高于其他处理。当MH = 60 ppm时,每株分枝数最高,NAA = 10 ppm次之。NAA @10 ppm、MH@ 60 ppm、GA3 @50 ppm、GA3 @100 ppm处理的可售果实产量显著高于对照。综上所述,在尼泊尔中部山区秋冬季节,利用植物生长调节剂,特别是NAA@ 10 ppm,可在步入式塑料隧道下种植热敏型黄瓜品种Bhaktapur Local。研究进一步表明,黄瓜可以成为该地区一个有利可图的、有潜力的农业企业。
{"title":"Response of cucumber (Cucumis sativus L. Cv. Bhaktapur local) to the application of plant growth regulators in plastic tunnel","authors":"K. Dahal, K. Dahal","doi":"10.3126/jafu.v5i1.48445","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48445","url":null,"abstract":"The field experiment was conducted to know the yield performance of cucumber var. Bhaktapur Local with the application of plant growth regulators (PGRs) in the farmers’ field of Lamjung, Nepal during September to November, 2013. Five treatments (Four PGRs; NAA @10 ppm, GA3 @ 50ppm, GA3 @100ppm, MH@ 60ppm and distilled water as control) were replicated six times under walk-in plastic tunnel. The experiment was laid out in randomized complete block design. The first 30 flowers of each plant were used for the observation. PGRs were sprayed in 2-4 true leaf stage of seedling, 20 days after first spray and 10 days after second spray. The research revealed that NAA @ 10 ppm had higher effect in sex expression, fruit set and yield than rest of the treatments. GA3 @ 100 ppm had significantly higher number of male flowers and more vine growth than other treatments. Branch per plant was obtained as the highest with MH @60 ppm followed by NAA @10 ppm. The marketable fruit yield was significant with NAA @10 ppm followed by MH@ 60 ppm, GA3 @50 ppm, GA3 @100 ppm than control. It is concluded that thermo-sensitive variety of cucumber Bhaktapur Local can be grown with the use of plant growth regulators particularly, NAA@ 10 ppm, under walk-in plastic tunnels during the autumn-winter season in the mid hills of Nepal. The research further indicated that cucumber can be a profitable and a potential agriculture enterprise for the area.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90807236","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: 1
Evaluation of reproductive performance and litter traits of Khari, Jamunapari and Sirohi crossbred goats in Surkhet district of Karnali province, Nepal 尼泊尔卡纳利省苏尔赫特地区哈里山羊、贾穆纳帕里山羊和西罗希山羊繁殖性能和产仔性状评价
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48444
N. Bhattarai, J. Poudel, M. Kolakshyapati, M. Sharma, N. Gorkhali, A. Sigdel, S. Upadhayaya, S. Sapkota
Goat produces 20.36% of meat, ranking in second position after buffalo meat production in Nepal and contributes 4% in agriculture GDP. Making out the influence of non-genetic factors on the phenotypic expression of reproductive and litter traits of goat is important to develop selection/evaluation criteria with healthier precision. Khari, Jamunapari and Sirohi crosses were considered for the comparative study of their reproductive and litter traits. Data obtained from the study of different reproductive and litter traits were firstly entered into the computer via excel package programs. The data were analyzed by Mixed Model Least-square and Maximum Likelihood Computer Program PC-2statistical package developed by Walter R. Harvey and the means were compared by Duncan’s Multiple Range Test (DMRT). Results revealed that the pooled means for AFC, AFK, PPE, GL, and KI were 344.31, 493.69, 173.42, 148.93, 319.58 days respectively. Similarly, pooled means for LSB, LWB, LSW, and LWW were 1.43, 5.16 kg, 1.37 and 28 kg respectively. Production system and breed were important nongenetic factor affecting reproductive traits significantly whereas parity is the most important non genetic factor affecting litter traits of goat. Almost all of the reproductive traits (except PPE) were observed better under the grazing system in Khari breed. Winter kidding goat had better PPE. Likewise, all the litter traits were significantly better in later parities with almost similar performance in all the breeds. To summarize, Khari was explored as a high potential goat regarding its reproductive traits with a massive scope of improvement in its litter weight trait through effective selection measures within the population.
山羊生产20.36%的肉类,在尼泊尔排名第二,仅次于水牛肉产量,占农业GDP的4%。了解非遗传因素对山羊繁殖性状和产仔性状表型表达的影响,对于制定更健康准确的选择/评价标准具有重要意义。以Khari、Jamunapari和Sirohi三个杂交品种为研究对象,对其生殖性状和产仔性状进行了比较研究。首先通过excel软件包程序将不同繁殖和产仔性状的研究数据输入计算机。采用Walter R. Harvey开发的混合模型最小二乘和最大似然计算机程序pc -2统计软件包对数据进行分析,采用Duncan多元极差检验(DMRT)比较均数。结果显示,AFC、AFK、PPE、GL和KI的合并平均时间分别为344.31、493.69、173.42、148.93和319.58天。同样,LSB、LWB、LSW和LWW的汇总平均值分别为1.43、5.16 kg、1.37和28 kg。生产制度和品种是影响山羊繁殖性状的重要非遗传因素,胎次是影响产仔性状的最重要非遗传因素。在放牧制度下,哈里品种除PPE外,几乎所有生殖性状均优于放牧制度。冬天开玩笑的山羊最好有个人防护装备。同样,所有产仔性状在后期胎次中都显著更好,所有品种的产仔性能几乎相同。综上所述,通过种群内有效的选择措施,哈里山羊在繁殖性状方面具有很高的潜力,其窝重性状有很大的改善范围。
{"title":"Evaluation of reproductive performance and litter traits of Khari, Jamunapari and Sirohi crossbred goats in Surkhet district of Karnali province, Nepal","authors":"N. Bhattarai, J. Poudel, M. Kolakshyapati, M. Sharma, N. Gorkhali, A. Sigdel, S. Upadhayaya, S. Sapkota","doi":"10.3126/jafu.v5i1.48444","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48444","url":null,"abstract":"Goat produces 20.36% of meat, ranking in second position after buffalo meat production in Nepal and contributes 4% in agriculture GDP. Making out the influence of non-genetic factors on the phenotypic expression of reproductive and litter traits of goat is important to develop selection/evaluation criteria with healthier precision. Khari, Jamunapari and Sirohi crosses were considered for the comparative study of their reproductive and litter traits. Data obtained from the study of different reproductive and litter traits were firstly entered into the computer via excel package programs. The data were analyzed by Mixed Model Least-square and Maximum Likelihood Computer Program PC-2statistical package developed by Walter R. Harvey and the means were compared by Duncan’s Multiple Range Test (DMRT). Results revealed that the pooled means for AFC, AFK, PPE, GL, and KI were 344.31, 493.69, 173.42, 148.93, 319.58 days respectively. Similarly, pooled means for LSB, LWB, LSW, and LWW were 1.43, 5.16 kg, 1.37 and 28 kg respectively. Production system and breed were important nongenetic factor affecting reproductive traits significantly whereas parity is the most important non genetic factor affecting litter traits of goat. Almost all of the reproductive traits (except PPE) were observed better under the grazing system in Khari breed. Winter kidding goat had better PPE. Likewise, all the litter traits were significantly better in later parities with almost similar performance in all the breeds. To summarize, Khari was explored as a high potential goat regarding its reproductive traits with a massive scope of improvement in its litter weight trait through effective selection measures within the population.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86310921","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
Restoring competitive and commercial agriculture in river basin of Nepal, focus in Daraudi river, Gorkha 恢复尼泊尔河流流域的竞争性和商业性农业,重点在廓尔喀的达罗迪河
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48473
S. Pokhrel
Daraudi river basin and sub-basins consisted of numerous fertile tars, phants and upland (24173 ha) supplying foods in settlements and neighboring cities. Agriculture in this area is no more attractive because of small size land/farm holdings (0.25ha/HH), subsistence farming, high production cost, higher agricultural risks, low productivity and low income. The aim of this research was to investigate the way of economic resilience by means of commercial agriculture, agricultural risk reduction, implementation of agriculture engineering and linking farm activities to services. Relevant literatures were reviewed, field verification and interactions were made in different rural municipalities/municipalities in the year 2021. The study found that the maize and millet in upland and rice-based cropping system in irrigated land are common in water shed and basin area. Cattle (35,709), buffalo (27,921), goat (82,358), sheep (6,806), pigs (5,430) and chicken (1,92,584) are major livestock kept. The area is in balance only on cereals (17,864 mt) and spices (735.3 mt/year) and deficit in all other foods. Land fallow (27.0%) is increasing because of youth out migration (0.72 persons/HH/year). The respondents demanded establishment of larger farm sizes (82.2%) from land pulling, farmers/entrepreneurs organizations development (54.4%), identification of profitable and competitive value chain for commercial production (74.4%), promote agriculture engineering activities (94.4%), minimization of agricultural and environmental risks (57.8%) and creation of local off farm employment (56.7%). They also suggested to have a commercial farm operation guideline (46.7%), linking all farm operation to services (55.6%, linking neighboring small producers with commercial farm for services (52.2%) and establishing a strong collaboration among all stakeholders in an integrated approach (42.2% respondents). It is recommended to address the demand of the respondents for restoring the competitive and commercial agriculture in river basin of Daraudi river. Similar recommendation may apply to other river basins in Nepal.
达罗迪河流域和次流域由许多肥沃的丘陵、丘陵和高地组成(24173公顷),为定居点和邻近城市提供食物。该地区的农业不再具有吸引力,因为土地/农场面积小(每小时0.25公顷),自给农业,生产成本高,农业风险高,生产力低,收入低。本研究的目的是通过商业农业、农业风险降低、农业工程的实施以及将农业活动与服务联系起来来调查经济弹性的方式。回顾了相关文献,并于2021年在不同农村市/市进行了实地验证和互动。研究发现,旱地种植的玉米、谷子和灌溉区以水稻为主的种植制度在流域和流域地区普遍存在。牛(35709头)、水牛(27921头)、山羊(82358头)、绵羊(6806头)、猪(5430头)和鸡(192584头)是主要的牲畜。该地区仅谷物(17864公吨)和香料(73.53公吨/年)处于平衡状态,其他所有食品均出现短缺。由于青年外出移民(0.72人/HH/年),休耕土地(27.0%)正在增加。受访者要求通过土地开采建立更大的农场规模(82.2%),农民/企业家组织发展(54.4%),为商业生产确定有利可图和有竞争力的价值链(74.4%),促进农业工程活动(94.4%),最小化农业和环境风险(57.8%)以及创造当地非农就业机会(56.7%)。他们还建议制定商业农场经营指南(46.7%),将所有农场经营与服务联系起来(55.6%),将邻近的小生产者与商业农场联系起来(52.2%),并以综合方式在所有利益相关者之间建立强有力的合作(42.2%的受访者)。建议解决调查对象的需求,恢复达罗迪河流域的竞争性和商业性农业。类似的建议可能适用于尼泊尔的其他河流流域。
{"title":"Restoring competitive and commercial agriculture in river basin of Nepal, focus in Daraudi river, Gorkha","authors":"S. Pokhrel","doi":"10.3126/jafu.v5i1.48473","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48473","url":null,"abstract":"Daraudi river basin and sub-basins consisted of numerous fertile tars, phants and upland (24173 ha) supplying foods in settlements and neighboring cities. Agriculture in this area is no more attractive because of small size land/farm holdings (0.25ha/HH), subsistence farming, high production cost, higher agricultural risks, low productivity and low income. The aim of this research was to investigate the way of economic resilience by means of commercial agriculture, agricultural risk reduction, implementation of agriculture engineering and linking farm activities to services. Relevant literatures were reviewed, field verification and interactions were made in different rural municipalities/municipalities in the year 2021. The study found that the maize and millet in upland and rice-based cropping system in irrigated land are common in water shed and basin area. Cattle (35,709), buffalo (27,921), goat (82,358), sheep (6,806), pigs (5,430) and chicken (1,92,584) are major livestock kept. The area is in balance only on cereals (17,864 mt) and spices (735.3 mt/year) and deficit in all other foods. Land fallow (27.0%) is increasing because of youth out migration (0.72 persons/HH/year). The respondents demanded establishment of larger farm sizes (82.2%) from land pulling, farmers/entrepreneurs organizations development (54.4%), identification of profitable and competitive value chain for commercial production (74.4%), promote agriculture engineering activities (94.4%), minimization of agricultural and environmental risks (57.8%) and creation of local off farm employment (56.7%). They also suggested to have a commercial farm operation guideline (46.7%), linking all farm operation to services (55.6%, linking neighboring small producers with commercial farm for services (52.2%) and establishing a strong collaboration among all stakeholders in an integrated approach (42.2% respondents). It is recommended to address the demand of the respondents for restoring the competitive and commercial agriculture in river basin of Daraudi river. Similar recommendation may apply to other river basins in Nepal.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86137551","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
Determinants for adoption of foundation rice seed production: Evidence from Kailali district of Nepal 采用基础水稻种子生产的决定因素:来自尼泊尔Kailali地区的证据
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48442
J. Dhungana
Rice seed production is an emerging agricultural enterprise to increase the income of farmers in Kailali. However, adoption of seed production technology is very limited in spite of its potential, which results in the poor supply of quality seed for its multiplication. Thus, this paper examines the influencing factors affecting farmers’ decision to adopt the foundation rice seed production in Kailali, Nepal. In total 158 households, 116 certified, and 42 foundation seed producers were selected using a stratified random sampling technique. The primary data were collected from September to November 2021. T-test, chi-square, and binary logistic model were applied for data analysis using SPSS. The result revealed that land size, experience, gender of household head, access to credit, training, extension contact, and type of family are statistically significant between two categories. Besides, the empirical result of logistic regression analysis indicated that out of twelve, six explanatory variables such as age, experience, training, extension contact, education, and type of family had significantly influence on adoption decision. Therefore, it is concluded the rice seed training programs and increasing the extension services would be beneficial to motivate the farmers for the production of foundation rice seed production.
稻种生产是一个新兴的农业企业,增加了农民的收入。然而,尽管制种技术具有潜力,但其采用非常有限,这导致其繁殖所需优质种子供应不足。因此,本文考察了尼泊尔Kailali地区农民决定采用基础稻种生产的影响因素。采用分层随机抽样技术,共选择158户、116名认证种子生产者和42名基础种子生产者。主要数据收集于2021年9月至11月。采用SPSS软件对数据进行t检验、卡方检验和二元logistic模型分析。结果显示,土地面积、经验、户主性别、获得信贷的机会、培训、扩展联系和家庭类型在两类之间具有统计学显著性。此外,逻辑回归分析的实证结果显示,在12个解释变量中,年龄、经验、培训、延伸接触、教育程度和家庭类型6个解释变量对收养决策有显著影响。因此,开展水稻种子培训,增加推广服务,有利于激励农民生产基础水稻种子。
{"title":"Determinants for adoption of foundation rice seed production: Evidence from Kailali district of Nepal","authors":"J. Dhungana","doi":"10.3126/jafu.v5i1.48442","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48442","url":null,"abstract":"Rice seed production is an emerging agricultural enterprise to increase the income of farmers in Kailali. However, adoption of seed production technology is very limited in spite of its potential, which results in the poor supply of quality seed for its multiplication. Thus, this paper examines the influencing factors affecting farmers’ decision to adopt the foundation rice seed production in Kailali, Nepal. In total 158 households, 116 certified, and 42 foundation seed producers were selected using a stratified random sampling technique. The primary data were collected from September to November 2021. T-test, chi-square, and binary logistic model were applied for data analysis using SPSS. The result revealed that land size, experience, gender of household head, access to credit, training, extension contact, and type of family are statistically significant between two categories. Besides, the empirical result of logistic regression analysis indicated that out of twelve, six explanatory variables such as age, experience, training, extension contact, education, and type of family had significantly influence on adoption decision. Therefore, it is concluded the rice seed training programs and increasing the extension services would be beneficial to motivate the farmers for the production of foundation rice seed production.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84927314","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
Growth performance of different fish species during dry period in Chitwan, Nepal 尼泊尔奇特旺不同鱼类在干旱期的生长性能
Pub Date : 2022-12-16 DOI: 10.3126/jafu.v5i1.48462
P. Neupane, S. Rai, H. Kafle, R. Ranjan
In order to assess the growth and yield of different fish species during dry period, an experiment was conducted in the Aquaculture Farm of Agriculture and Forestry University, Rampur, Chitwan from 1 April to 10 July, 2021. The experiment included three treatments: T1 (Carp polyculture), T2 (Common carp Cyprinus carpio monoculture) and T3 (Nile tilapia Oreochromis niloticus monoculture), each with three replications. Silver carp (Hypophthalmichthys molitrix 7%), Bighead carp (Aristichthys nobilis 20%), Grass carp (Ctenopharyngodon idella 13%), Rohu (Labeo rohita 30%), Mrigal (Cirrhinus mrigala 10%) and Common carp (20%) were stocked at densities of 1,400, 4,000, 2,600, 4,000, 6,000 and 2,000 fish/ha, respectively. Stocking density of Common carp and Nile tilapia was 20,000 fish/ha. Fish were fed with sinking pellet (28% crude protein) at the rate of 3% of body weight. Gross and net fish yield was significantly higher in T3 (89.89±0.67 t/ha/yr,16±0.25 t/ha/ yr) than in T2 (4.88±0.38 t/ha/yr, 4.05±0.35 t/ha/yr) due to higher (p<0.05) survival in T3 (72.5±11.3 %) than in T2 (40.6±4.5 %). Gross margin was significantly higher in T3 (1,257,482±186,600 NRs./ha/yr) than in T2 (434,250±124,753 NRs./ha/yr). Based on higher survival, yield and gross margin, Nile tilapia monoculture is suitable for dry season.
为了评估干旱期不同鱼类的生长和产量,于2021年4月1日至7月10日在Chitwan Rampur农林大学水产养殖场进行了试验。试验分为3个处理:T1(鲤鱼混养)、T2(鲤鱼单养)和T3(尼罗罗非鱼单养),每组3个重复。鲤鱼(Hypophthalmichthys molitrix 7%)、鳙鱼(Aristichthys nobilis 20%)、草鱼(Ctenopharyngodon idella 13%)、罗虎鱼(Labeo rohita 30%)、麻鲤(Cirrhinus mrigala 10%)和鲤鱼(20%)的放养密度分别为1400、4000、2600、4000、6000和2000尾/公顷。鲤鱼和尼罗罗非鱼的放养密度为2万条/公顷。以体重3%的比例投喂含28%粗蛋白质的下沉颗粒。总鱼和净鱼产量(89.89±0.67 t/ha/yr,16±0.25 t/ha/yr)显著高于T2(4.88±0.38 t/ha/yr, 4.05±0.35 t/ha/yr),这是由于T3的成活率(72.5±11.3%)高于T2(40.6±4.5%)(p<0.05)。T3的毛利率(1,257,482±186,600 NRs./ha/yr)明显高于T2(434,250±124,753 NRs./ha/yr)。基于较高的成活率、产量和毛利率,尼罗罗非鱼单一养殖适合于旱季。
{"title":"Growth performance of different fish species during dry period in Chitwan, Nepal","authors":"P. Neupane, S. Rai, H. Kafle, R. Ranjan","doi":"10.3126/jafu.v5i1.48462","DOIUrl":"https://doi.org/10.3126/jafu.v5i1.48462","url":null,"abstract":"In order to assess the growth and yield of different fish species during dry period, an experiment was conducted in the Aquaculture Farm of Agriculture and Forestry University, Rampur, Chitwan from 1 April to 10 July, 2021. The experiment included three treatments: T1 (Carp polyculture), T2 (Common carp Cyprinus carpio monoculture) and T3 (Nile tilapia Oreochromis niloticus monoculture), each with three replications. Silver carp (Hypophthalmichthys molitrix 7%), Bighead carp (Aristichthys nobilis 20%), Grass carp (Ctenopharyngodon idella 13%), Rohu (Labeo rohita 30%), Mrigal (Cirrhinus mrigala 10%) and Common carp (20%) were stocked at densities of 1,400, 4,000, 2,600, 4,000, 6,000 and 2,000 fish/ha, respectively. Stocking density of Common carp and Nile tilapia was 20,000 fish/ha. Fish were fed with sinking pellet (28% crude protein) at the rate of 3% of body weight. Gross and net fish yield was significantly higher in T3 (89.89±0.67 t/ha/yr,16±0.25 t/ha/ yr) than in T2 (4.88±0.38 t/ha/yr, 4.05±0.35 t/ha/yr) due to higher (p<0.05) survival in T3 (72.5±11.3 %) than in T2 (40.6±4.5 %). Gross margin was significantly higher in T3 (1,257,482±186,600 NRs./ha/yr) than in T2 (434,250±124,753 NRs./ha/yr). Based on higher survival, yield and gross margin, Nile tilapia monoculture is suitable for dry season.","PeriodicalId":15865,"journal":{"name":"Journal of Fujian Agriculture and Forestry University","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82988187","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
Journal of Fujian Agriculture and Forestry University
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