D. Shaha, Asima Kumar, F. Haque, Jahid Hasan, Murshida Khan, M. Ahsan, N. Mimi
The purpose of the experiment was to examine the effect of cage fish culture on the growth and production performances of Shing (Heteropneustes fossilis), Pabda (Ompok pabda) and Gulsha (Mystus cavasius). The stocking density for each fish species was 100 fish/m3. Cages with Shing, Pabda and Gulsha were treated as T1, T2 and T3, respectively. Fishes were fed with artificial diet at the rate of 5-10% of body weight. The experiment was carried out in cages in the Beel from June to November 2019. The study revealed that water quality parameters were not varied significantly (p > 0.05) among the treatments. The growth and production performance were significantly (p < 0.05) higher for Pabda cage culture followed by Gulsha and Shing cultures in cages. Therefore, the total net return (BDT 17,028) and benefit cost ratio (2.48) were significantly (p < 0.05) higher for Pabda fish considering cost benefit analysis. It was concluded that, among the three different fish species, high-valued Pabda is highly acceptable candidate for cage farming in Belai Beel area and cage farming in urban open waterbodies is a promising approach to increase the total fish production to improve the social and economic status of fish farmers.
{"title":"Use of Urban Open-waterbody to Enhance Fish Production through Cage Culture","authors":"D. Shaha, Asima Kumar, F. Haque, Jahid Hasan, Murshida Khan, M. Ahsan, N. Mimi","doi":"10.5455/jbau.139783","DOIUrl":"https://doi.org/10.5455/jbau.139783","url":null,"abstract":"The purpose of the experiment was to examine the effect of cage fish culture on the growth and production performances of Shing (Heteropneustes fossilis), Pabda (Ompok pabda) and Gulsha (Mystus cavasius). The stocking density for each fish species was 100 fish/m3. Cages with Shing, Pabda and Gulsha were treated as T1, T2 and T3, respectively. Fishes were fed with artificial diet at the rate of 5-10% of body weight. The experiment was carried out in cages in the Beel from June to November 2019. The study revealed that water quality parameters were not varied significantly (p > 0.05) among the treatments. The growth and production performance were significantly (p < 0.05) higher for Pabda cage culture followed by Gulsha and Shing cultures in cages. Therefore, the total net return (BDT 17,028) and benefit cost ratio (2.48) were significantly (p < 0.05) higher for Pabda fish considering cost benefit analysis. It was concluded that, among the three different fish species, high-valued Pabda is highly acceptable candidate for cage farming in Belai Beel area and cage farming in urban open waterbodies is a promising approach to increase the total fish production to improve the social and economic status of fish farmers.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74275568","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}
The major objective of this investigation was to assess the costs and benefits for farmers of the BINA advanced draught-tolerant cultivar Binamasur-10 in Nachole and Sadar upazilas of Chapainawabganj district, Bangladesh. All of the original data used in this investigation was acquired from 50 farmers who grew the Binamasur-10 variety, through a pre-planned interview schedule and data collected from April to May 2021. To estimate profitability in this study, costs and return evaluation were done using variable value and total price principles. A total of Tk. 51370.47 was spent on production costs per ha, of which 35% were fixed costs and 65% were variable costs. The cost in Nachole was Tk. 51799.24 per ha, while the cost in Chapainawabganj Sadar was Tk. 50941.70 per ha. In the studied locations, the average net return was Tk. 61909.25 per ha, greater in Chapainwabganj Sadar (Tk. 74050.57 ha-1) than in Nachole (Tk. 49767.92 ha-1). The BCR was assessed to be 2.20 based on overall cost, which was similarly higher in Sadar (2.45) than in Nachole (1.96), both of which are located in the Chapainawabganj district. The 88% of respondents mentioned that shortage of Binamasur-10 seeds was the top constraint. Other restrictions include the lack of information (51%), lack of technical understanding (40%), increased insect infestation (38%), untimely rainfall (36%), and high insecticide costs (19%). Farmers in these regions ought to have access to superior lentil seeds at reasonable market rates as a result. Therefore, the current study is a modest attempt to investigate if the availability of pulse seeds of higher quality at a lower cost could increase production in the chosen areas.
{"title":"Profitability Analysis of a Newly Developed Drought-Tolerant Pulse Variety Binamasur-10 in Chapainawabganj District of Bangladesh","authors":"Mju Ahmed, M. Noorunnahar, K. Das","doi":"10.5455/jbau.131912","DOIUrl":"https://doi.org/10.5455/jbau.131912","url":null,"abstract":"The major objective of this investigation was to assess the costs and benefits for farmers of the BINA advanced draught-tolerant cultivar Binamasur-10 in Nachole and Sadar upazilas of Chapainawabganj district, Bangladesh. All of the original data used in this investigation was acquired from 50 farmers who grew the Binamasur-10 variety, through a pre-planned interview schedule and data collected from April to May 2021. To estimate profitability in this study, costs and return evaluation were done using variable value and total price principles. A total of Tk. 51370.47 was spent on production costs per ha, of which 35% were fixed costs and 65% were variable costs. The cost in Nachole was Tk. 51799.24 per ha, while the cost in Chapainawabganj Sadar was Tk. 50941.70 per ha. In the studied locations, the average net return was Tk. 61909.25 per ha, greater in Chapainwabganj Sadar (Tk. 74050.57 ha-1) than in Nachole (Tk. 49767.92 ha-1). The BCR was assessed to be 2.20 based on overall cost, which was similarly higher in Sadar (2.45) than in Nachole (1.96), both of which are located in the Chapainawabganj district. The 88% of respondents mentioned that shortage of Binamasur-10 seeds was the top constraint. Other restrictions include the lack of information (51%), lack of technical understanding (40%), increased insect infestation (38%), untimely rainfall (36%), and high insecticide costs (19%). Farmers in these regions ought to have access to superior lentil seeds at reasonable market rates as a result. Therefore, the current study is a modest attempt to investigate if the availability of pulse seeds of higher quality at a lower cost could increase production in the chosen areas.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84434052","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}
High humidity favours the proliferation of a wide range of weed species. Studying the phytosociological attributes of weeds in a humid area provides insight into the dynamism and relative importance of each weed species peculiar to the area which is very important in understanding crop-weed interrelationships and highlights the bases for effective management stratages. An experiment was conducted in 2019 and 2020 cropping seasons at the Department of Crop Science Teaching and Research Farm, University of Calabar, to identify the predominant weeds in the farm area and assess their responses to polyethylene colour and soil solarization duration. The experiment was a factorial combination of two polyethylene colour (black and transparent) and five in situ soil solarization durations (0, 8, 12, 16 and 48 weeks), laid out in randomized complete block design (RCBD) with three replications. Data were collected on the phytosociological characteristics of the weeds on four weekly intervals up to the twentieth week. The predominant weeds identified in the experimental area were Eragrostis ciliaris L., Cynodoon dactylon L., Panicum maximum Jacq., Axonopus compressus Beav., Kyllinga bulbosa Beav. and Kyllinga erecta Schum., Gloriosa superba L., Ipomoea involuncrata P., Calapogonium mucunoides Desv., Aspillia bussei O. Hoff, Ageratum conyzoides L., Phyllantus amarus Schum., Caldum bicolor Vent., Triumfeta rhomboidea Jacq., Cleome rutidosperma DC., Euphorbia heterophylla L., Mitracarpos villosus DC., Oldenladia. herbacea L. The relative density of Caladum bicolor was higher across the treatment in both years, reaching up to 37.7 % in the plot solarized for 16 weeks using black polyethylene, followed by P. maximum with upto 18.40 % in 2019 and Gloriosa superba (20.50 %) in 2020. The highest Important Value Index was recorded by Caladum bicolor reaching up to 28.7 % in the plot solarized for 16 weeks using black polyethylene. The lowest species variation was recorded in the plots solarized for 16 to 48 weeks irrespective of the polyethylene colour. In situ solarization of up to sixteen weeks using black polyethylene effectively controlled majority of the weed species in both years and is recommended for effective weed suppression in cassava farms in humid environment.
高湿度有利于各种杂草的繁殖。研究湿润地区杂草的植物社会学属性，可以深入了解该地区特有的每种杂草的动态和相对重要性，这对于理解作物与杂草的相互关系非常重要，并为有效的管理策略提供了基础。在2019年和2020年的种植季节，在卡拉巴大学作物科学教学与研究农场进行了一项实验，以确定农场地区的主要杂草，并评估它们对聚乙烯颜色和土壤日晒时间的反应。试验采用随机完全区组设计(RCBD)， 3个重复，对两种聚乙烯颜色(黑色和透明)和5种原位土壤日晒时间(0,8,12,16和48周)进行因子组合。每隔4周收集一次杂草的植物社会学特征数据，直至第20周。在试验区鉴定出的优势杂草为毛糙草(Eragrostis ciliaris L.)、沙爪草(Cynodoon dactylon L.)、大黄草(Panicum maximum Jacq.)。，压轴螈的行为。，海牛。和麒麟甲。，锦绣天竺葵，锦绣天竺葵，锦绣天竺葵。，金丝桃，金丝桃，金丝桃，金丝桃Caldum双色通风口。，凯旋塔菱形雅克。，毛蕊果穗DC。，大戟，黄叶大戟;, Oldenladia。双色钙的相对密度在两个年份的处理中都较高，在黑色聚乙烯照射16周的田块中最高达37.7%，其次是白花草，2019年最高达18.40%，2020年最高达20.50%。黑色聚乙烯处理16周后，双色钙的重要价值指数最高，达28.7%。无论聚乙烯颜色如何，光照16至48周的样地物种变异最小。在这两年中，使用黑色聚乙烯进行长达16周的原位日光照射，有效地控制了大多数杂草种类，并建议在潮湿环境中的木薯农场进行有效的杂草抑制。
{"title":"Effect of polyethylene sheet colour and in situ solarization durations on the phytosociological structures of the predominant weeds in humid environment of southern Nigeria.","authors":"F. Nwagwu, T. Ojikpong, Okechukwu C. Umunnakwe,","doi":"10.5455/jbau.146341","DOIUrl":"https://doi.org/10.5455/jbau.146341","url":null,"abstract":"High humidity favours the proliferation of a wide range of weed species. Studying the phytosociological attributes of weeds in a humid area provides insight into the dynamism and relative importance of each weed species peculiar to the area which is very important in understanding crop-weed interrelationships and highlights the bases for effective management stratages. An experiment was conducted in 2019 and 2020 cropping seasons at the Department of Crop Science Teaching and Research Farm, University of Calabar, to identify the predominant weeds in the farm area and assess their responses to polyethylene colour and soil solarization duration. The experiment was a factorial combination of two polyethylene colour (black and transparent) and five in situ soil solarization durations (0, 8, 12, 16 and 48 weeks), laid out in randomized complete block design (RCBD) with three replications. Data were collected on the phytosociological characteristics of the weeds on four weekly intervals up to the twentieth week. The predominant weeds identified in the experimental area were Eragrostis ciliaris L., Cynodoon dactylon L., Panicum maximum Jacq., Axonopus compressus Beav., Kyllinga bulbosa Beav. and Kyllinga erecta Schum., Gloriosa superba L., Ipomoea involuncrata P., Calapogonium mucunoides Desv., Aspillia bussei O. Hoff, Ageratum conyzoides L., Phyllantus amarus Schum., Caldum bicolor Vent., Triumfeta rhomboidea Jacq., Cleome rutidosperma DC., Euphorbia heterophylla L., Mitracarpos villosus DC., Oldenladia. herbacea L. The relative density of Caladum bicolor was higher across the treatment in both years, reaching up to 37.7 % in the plot solarized for 16 weeks using black polyethylene, followed by P. maximum with upto 18.40 % in 2019 and Gloriosa superba (20.50 %) in 2020. The highest Important Value Index was recorded by Caladum bicolor reaching up to 28.7 % in the plot solarized for 16 weeks using black polyethylene. The lowest species variation was recorded in the plots solarized for 16 to 48 weeks irrespective of the polyethylene colour. In situ solarization of up to sixteen weeks using black polyethylene effectively controlled majority of the weed species in both years and is recommended for effective weed suppression in cassava farms in humid environment.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78258262","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}
Climate change puts food system at risk if there are no effective adaptation strategies. The study investigated influence of farmers' demographics (education, age and gender) on twelve considerable factors for adaptation strategies across four (Edo, Ondo, Benue and Niger) States in Nigeria by subjecting 1600 copies of pretest questionnaire to stepwise multiple regression analysis. The factors are Years of Practice (YoP), Farm Size, (FS), Places of Selling Produce (PSP), Use of Family as Labour (UFL), Use of Hired Labour (UHL), Transportation Situation (TS), Diversification into Non-farming Activities (DINA), Substitutions of Scarce Resources (SSR), Government Agriculture Extension Services (GAES), Awareness of Climate Information (ACI), Access to Farm Input (AFI), and Access to Credit Services (ACS). The model entered UFL, PSP and ACI in Benue State, YoP, UHL, SSR, and TS in Edo State, UFL, PSP, DINA, ACS, AFI, UHL and SSR in Niger State, and UFL and ACS in Ondo State. The Durbi-Watson values of all the models were ranged from 1.568 in Benue State to 1.905 in Niger State, indicating positive autocorrelation. The ANOVA indicated that F-test was highly significant for each State’s model and explained a significant variation in the influence of farmers’ demographics. Tolerance > 0.1 and Variable Inflation Factor < 10 showing there was multicollinearity and the variables were highly correlated. In conclusion, the adaptation strategies to tackle climate change effects are collectively determined by the farmers’ demographics.
{"title":"Adaptation Strategies of Rain-fed Farmers to Climate Change in Nigeria","authors":"A. Towolawi","doi":"10.5455/jbau.120899","DOIUrl":"https://doi.org/10.5455/jbau.120899","url":null,"abstract":"Climate change puts food system at risk if there are no effective adaptation strategies. The study investigated influence of farmers' demographics (education, age and gender) on twelve considerable factors for adaptation strategies across four (Edo, Ondo, Benue and Niger) States in Nigeria by subjecting 1600 copies of pretest questionnaire to stepwise multiple regression analysis. The factors are Years of Practice (YoP), Farm Size, (FS), Places of Selling Produce (PSP), Use of Family as Labour (UFL), Use of Hired Labour (UHL), Transportation Situation (TS), Diversification into Non-farming Activities (DINA), Substitutions of Scarce Resources (SSR), Government Agriculture Extension Services (GAES), Awareness of Climate Information (ACI), Access to Farm Input (AFI), and Access to Credit Services (ACS). The model entered UFL, PSP and ACI in Benue State, YoP, UHL, SSR, and TS in Edo State, UFL, PSP, DINA, ACS, AFI, UHL and SSR in Niger State, and UFL and ACS in Ondo State. The Durbi-Watson values of all the models were ranged from 1.568 in Benue State to 1.905 in Niger State, indicating positive autocorrelation. The ANOVA indicated that F-test was highly significant for each State’s model and explained a significant variation in the influence of farmers’ demographics. Tolerance > 0.1 and Variable Inflation Factor < 10 showing there was multicollinearity and the variables were highly correlated. In conclusion, the adaptation strategies to tackle climate change effects are collectively determined by the farmers’ demographics.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77848023","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}
Satabdy Sarker, C. Mahapatra, S. Sarkar, M. Rashid, S. Paul
The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from November 2019 to March 2020 to find out the effect of date of sowing and nutrient management on the growth, yield and quality of table beet. The experiment comprised three dates of sowing, viz. 15 November 2019, 15 December 2019 and 15 January 2020, and five nutrient managements, viz. recommended dose of inorganic fertilizer (RDF) N-P-K @ 60-100-60 kg ha–1, respectively, 75% RDF + cowdung @ 10 t ha-1, 25% RDF + cowdung @ 10 t ha-1, 75% RDF + vermicompost @ 5 t ha-1, 25% RDF + vermicompost @ 5 t ha-1. The experiment was laid out in a randomized complete block design with three replications. Growth traits, yield components, yield and quality were significantly influenced by date of sowing, nutrient management and their interactions. The highest shoot length and leaf number and were recorded in early sowing on 15 November fertilized with 75% recommended dose of inorganic fertilizer + vermicompost @ 5 t ha–1. The highest root girth, root length, root yield, TSS (%) and value of vitamin c were recorded when the crop was sown on 15 November. Yield components, root yield and grain TSS (%) gradually decreased due to delay in sowing. In case of nutrient, the highest root girth, root length, root yield and value of TSS (%) were recorded when the crop was fertilized with 75% recommended dose of inorganic fertilizer + vermicompost @ 5 t ha–1. The highest value of ascorbic acid was recorded when fertilized with 25% RDF + vermicompost @ 5 t ha-1. Early sowing on 15 November fertilized with 75% recommended dose of inorganic fertilizer + vermicompost @ 5 t ha–1 was found to be promising practice for the cultivation of table beet under Old Brahmaputra Floodplain Soils of Bangladesh.
该试验于2019年11月至2020年3月在孟加拉国农业大学Mymensingh农学田间实验室进行，旨在了解播期和营养管理对食用甜菜生长、产量和品质的影响。试验包括3个播种日期，即2019年11月15日、2019年12月15日和2020年1月15日，以及5种营养管理，即无机肥料(RDF) N-P-K推荐用量分别为60-100-60 kg hm -1、75% RDF +牛粪@ 10 t hm -1、25% RDF +牛粪@ 10 t hm -1、75% RDF +蚯蚓堆肥@ 5 t hm -1、25% RDF +蚯蚓堆肥@ 5 t hm -1。试验采用完全随机区组设计，设3个重复。播期、养分管理及其相互作用对玉米的生长性状、产量构成、产量和品质均有显著影响。在11月15日早播时，施用推荐用量75%的无机肥+蚯蚓堆肥@ 5 t hm - 1，茎长和叶数最高。在11月15日播种时，记录了最高的根周长、根长、根产量、TSS(%)和维生素c值。产量构成、根系产量和籽粒TSS(%)因播后延迟而逐渐降低。在养分方面，在推荐用量75%的无机肥+蚯蚓堆肥@ 5 t hm - 1的施肥条件下，记录了最高的根围、根长、根产量和TSS值(%)。当添加25% RDF +蚯蚓堆肥@ 5 t hm -1时，抗坏血酸含量最高。11月15日提前播种，施用75%推荐剂量的无机肥料+蚯蚓堆肥@ 5 t hm - 1，被认为是在孟加拉国旧雅鲁藏布江洪泛平原土壤下种植甜菜的有希望的做法。
{"title":"Influence of time of sowing and nutrient management on yield and quality of table beet in Bangladesh","authors":"Satabdy Sarker, C. Mahapatra, S. Sarkar, M. Rashid, S. Paul","doi":"10.5455/jbau.150466","DOIUrl":"https://doi.org/10.5455/jbau.150466","url":null,"abstract":"The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from November 2019 to March 2020 to find out the effect of date of sowing and nutrient management on the growth, yield and quality of table beet. The experiment comprised three dates of sowing, viz. 15 November 2019, 15 December 2019 and 15 January 2020, and five nutrient managements, viz. recommended dose of inorganic fertilizer (RDF) N-P-K @ 60-100-60 kg ha–1, respectively, 75% RDF + cowdung @ 10 t ha-1, 25% RDF + cowdung @ 10 t ha-1, 75% RDF + vermicompost @ 5 t ha-1, 25% RDF + vermicompost @ 5 t ha-1. The experiment was laid out in a randomized complete block design with three replications. Growth traits, yield components, yield and quality were significantly influenced by date of sowing, nutrient management and their interactions. The highest shoot length and leaf number and were recorded in early sowing on 15 November fertilized with 75% recommended dose of inorganic fertilizer + vermicompost @ 5 t ha–1. The highest root girth, root length, root yield, TSS (%) and value of vitamin c were recorded when the crop was sown on 15 November. Yield components, root yield and grain TSS (%) gradually decreased due to delay in sowing. In case of nutrient, the highest root girth, root length, root yield and value of TSS (%) were recorded when the crop was fertilized with 75% recommended dose of inorganic fertilizer + vermicompost @ 5 t ha–1. The highest value of ascorbic acid was recorded when fertilized with 25% RDF + vermicompost @ 5 t ha-1. Early sowing on 15 November fertilized with 75% recommended dose of inorganic fertilizer + vermicompost @ 5 t ha–1 was found to be promising practice for the cultivation of table beet under Old Brahmaputra Floodplain Soils of Bangladesh.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90876955","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}
This study was aimed to determine the types and levels of variability, heritability, genetic progress, relationships between yield and the features that contribute to it, and some key indicators of terminal heat stress tolerance. Twenty different wheat genotypes were planted in the fields over the course of six different treatments spaced 10 days interval following a Randomized Complete Block Design (RCBD) with three replications. A high degree of significant variation was observed for all the characters studied. Estimates of the genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) revealed that the phenotypic coefficient of variation was higher than the genotypic coefficient of variation, which indicates a large effect of environment on the expression of the characters studied. The highest estimates of PCV and GCV were observed for grain yield/plant followed by the number of tillers/plant. Heritability estimates revealed that characters like pollen fertility and sterility exhibited the highest heritability followed by days to maturity. The genetic advance was higher for grains/plants followed by plant height. Grain yield showed significant and positive phenotypic and genotypic correlations with grains/plant and 100-grain weight. Phenotypic path analysis revealed a significant direct positive effect of 100-grain weight on grain yield. Principal component analysis (PCA) revealed that the first five components having greater than one Eigenvalue contributed to 83.41% variability. The heat stress tolerance indices revealed that Bijoy and BARI Gom-25 had the lowest tolerance index (TOL), stress susceptibility index (SSI) values and highest yield susceptibility index (YSI) values which show more tolerance and less susceptibility to terminal heat stress and produce moderate grain yield under terminal heat stress. Balaka and Shughat had the highest mean productivity (MP), geometric mean productivity (GMP), and stress tolerance index (STI) values and produce high yields under terminal heat stress conditions.
{"title":"Characterization of wheat genotypes for terminal heat stress tolerance in Bangladesh","authors":"A. Tithi, G. Sagor","doi":"10.5455/jbau.93220","DOIUrl":"https://doi.org/10.5455/jbau.93220","url":null,"abstract":"This study was aimed to determine the types and levels of variability, heritability, genetic progress, relationships between yield and the features that contribute to it, and some key indicators of terminal heat stress tolerance. Twenty different wheat genotypes were planted in the fields over the course of six different treatments spaced 10 days interval following a Randomized Complete Block Design (RCBD) with three replications. A high degree of significant variation was observed for all the characters studied. Estimates of the genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) revealed that the phenotypic coefficient of variation was higher than the genotypic coefficient of variation, which indicates a large effect of environment on the expression of the characters studied. The highest estimates of PCV and GCV were observed for grain yield/plant followed by the number of tillers/plant. Heritability estimates revealed that characters like pollen fertility and sterility exhibited the highest heritability followed by days to maturity. The genetic advance was higher for grains/plants followed by plant height. Grain yield showed significant and positive phenotypic and genotypic correlations with grains/plant and 100-grain weight. Phenotypic path analysis revealed a significant direct positive effect of 100-grain weight on grain yield. Principal component analysis (PCA) revealed that the first five components having greater than one Eigenvalue contributed to 83.41% variability. The heat stress tolerance indices revealed that Bijoy and BARI Gom-25 had the lowest tolerance index (TOL), stress susceptibility index (SSI) values and highest yield susceptibility index (YSI) values which show more tolerance and less susceptibility to terminal heat stress and produce moderate grain yield under terminal heat stress. Balaka and Shughat had the highest mean productivity (MP), geometric mean productivity (GMP), and stress tolerance index (STI) values and produce high yields under terminal heat stress conditions.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74104092","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}
Abstract Fish consumption is generally considered as healthy due to their nutritional benefits that they ensure food security in many low and middle-income countries. Especially the Omega-3 fatty acids and essential amino acids present in the fish had beneficial effects on the Coronary Heart Disease (CHD) and reduce the Protein Energy Malnutrition (PEM) in these countries. Being an island and expanding aquatic resources, Sri Lanka has plenty of fish resources, but, the consumption of small fish among the population has decreased in the country over the past 20 years. So, it is essential to be aware of the nutritional content of particular fish species that are assumed to be undervalued. This study, it was aimed to compare the nutritional composition of three local fish species namely, Amblygaster sirm, Sardinella brachysoma and Oreochromis niloticus. Proximate composition, pH and calorific values of the fish meat were determined by standard methods and other relevant protocols. The fatty acid profiles of oils of the fish were examined using the GC-MS method. Results showed that there were significant (p<0.05) differences among the three fish species with respect to the proximate parameters and fatty acid composition. When compared to the other two species, S. brachysoma exhibited the highest quantity of crude protein and fat, with 19.23% and 4.85% respectively. Among three fish species, the total mono-unsaturated fatty acid (MUFA) and poly-unsaturated fatty acid (PUFA) contents ranged from 31 to 38%; particularly, quantities of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were found to vary from 2.69 to 3.7% and 7.5% to 9.2%, respectively. Considering the Omega-6:Omega3 ratio, A.sirm (0.3), S. Brachysoma (0.69) and O. niloticus (6.5) were reported balanced values. In conclusion, these three fish species can be potential raw materials to produce high-value fish products.
{"title":"Comparison of the Nutritional Composition of Three Underutilized Fish Species in Sri Lanka","authors":"Rikasa Mohamed, Abdul Udumalebbe, N. Marikkar","doi":"10.5455/jbau.141837","DOIUrl":"https://doi.org/10.5455/jbau.141837","url":null,"abstract":"Abstract Fish consumption is generally considered as healthy due to their nutritional benefits that they ensure food security in many low and middle-income countries. Especially the Omega-3 fatty acids and essential amino acids present in the fish had beneficial effects on the Coronary Heart Disease (CHD) and reduce the Protein Energy Malnutrition (PEM) in these countries. Being an island and expanding aquatic resources, Sri Lanka has plenty of fish resources, but, the consumption of small fish among the population has decreased in the country over the past 20 years. So, it is essential to be aware of the nutritional content of particular fish species that are assumed to be undervalued. This study, it was aimed to compare the nutritional composition of three local fish species namely, Amblygaster sirm, Sardinella brachysoma and Oreochromis niloticus. Proximate composition, pH and calorific values of the fish meat were determined by standard methods and other relevant protocols. The fatty acid profiles of oils of the fish were examined using the GC-MS method. Results showed that there were significant (p<0.05) differences among the three fish species with respect to the proximate parameters and fatty acid composition. When compared to the other two species, S. brachysoma exhibited the highest quantity of crude protein and fat, with 19.23% and 4.85% respectively. Among three fish species, the total mono-unsaturated fatty acid (MUFA) and poly-unsaturated fatty acid (PUFA) contents ranged from 31 to 38%; particularly, quantities of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were found to vary from 2.69 to 3.7% and 7.5% to 9.2%, respectively. Considering the Omega-6:Omega3 ratio, A.sirm (0.3), S. Brachysoma (0.69) and O. niloticus (6.5) were reported balanced values. In conclusion, these three fish species can be potential raw materials to produce high-value fish products.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"258263 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77535604","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}
M. Islam, Mohammad Sohel Rahman, M. Haque, M. Rahaman, M. Omar, M. Sarkar, Mohammad Islam
One of the main objectives of the green revolution is to replace the local (traditional) cultivars with high-yielding varieties (HYVs). Replacing HYVs in the local cultivars-intensive areas would increase rice production and strengthen national food security. To do this, it is necessary to identify the determinants of cultivating local rice varieties by farmers. Therefore, this study used fractional logistic regression and a cognitive approach in the popular Aman and Boro season local rice variety-intensive areas to find out the causes of cultivating local rice varieties. The findings reveal that the main cause is the adverse ecology, where HYVs are not suitable, but local cultivars have physiological attributes to be well suited. The local cultivars are growing mainly in the Haor and flood-prone ecosystems, where modern varieties can not be sustained. The profitability of local rice cultivars is better than the HYVs as well. Moreover, farmers’ socioeconomic conditions such as age, education, occupation, income, and farm size influence the cultivation of local rice varieties. The yield, land topography, and market price also have an impact on the adoption intensity of local cultivars. The farmers also opined that the special grain quality of the local rice cultivars attracts the farmers, consumers, and market price that lubricate the intensity of local rice varieties adoption in the specific areas of Bangladesh. The findings of this study would be helpful for the rice breeders, scientists, and policymakers to develop suitable modern rice cultivars and management packages for boosting rice production in the targeted local rice cultivars intensive areas of Bangladesh.
{"title":"Cultivation of Local Rice Varieties in Bangladesh: Assessing the Farm Level Determinants","authors":"M. Islam, Mohammad Sohel Rahman, M. Haque, M. Rahaman, M. Omar, M. Sarkar, Mohammad Islam","doi":"10.5455/jbau.141597","DOIUrl":"https://doi.org/10.5455/jbau.141597","url":null,"abstract":"One of the main objectives of the green revolution is to replace the local (traditional) cultivars with high-yielding varieties (HYVs). Replacing HYVs in the local cultivars-intensive areas would increase rice production and strengthen national food security. To do this, it is necessary to identify the determinants of cultivating local rice varieties by farmers. Therefore, this study used fractional logistic regression and a cognitive approach in the popular Aman and Boro season local rice variety-intensive areas to find out the causes of cultivating local rice varieties. The findings reveal that the main cause is the adverse ecology, where HYVs are not suitable, but local cultivars have physiological attributes to be well suited. The local cultivars are growing mainly in the Haor and flood-prone ecosystems, where modern varieties can not be sustained. The profitability of local rice cultivars is better than the HYVs as well. Moreover, farmers’ socioeconomic conditions such as age, education, occupation, income, and farm size influence the cultivation of local rice varieties. The yield, land topography, and market price also have an impact on the adoption intensity of local cultivars. The farmers also opined that the special grain quality of the local rice cultivars attracts the farmers, consumers, and market price that lubricate the intensity of local rice varieties adoption in the specific areas of Bangladesh. The findings of this study would be helpful for the rice breeders, scientists, and policymakers to develop suitable modern rice cultivars and management packages for boosting rice production in the targeted local rice cultivars intensive areas of Bangladesh.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84093495","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}
Rhizobium inoculation can increase soybean yield, but its performance is influenced by soybean genotypes. The objective of the study was to assess the effect of Rhizobium inoculum on the growth, yield and quality of soybean varieties. In this regard, five different rates of Rhizobium inoculum were applied on eight distinct soybean varieties namely Shohag, BARI Soybean-5, BARI Soybean-6, PB-1, Binasoybean-1, Binasoybean-2, Binasoybean-3 and Binasoybean-4. The experiment was set up using a randomized complete block design with three replications. Soybean varieties showed variability in terms of plant stature, number of branches plant-1 and number of nodules plant-1 at different days after sowing. Among the varieties, Binasoybean-4 produced the tallest plant at 45 and 60 DAS and at 60 DAS variety PB-1 produced the tallest plant. At 45 DAS Binasoybean-2, at 60 DAS BARI Soybean-6 and at 75 DAS Binasoybean-4 produced the highest number of branches plant-1. In case of nodule production, Binasoybean-3 produced the highest number of nodules palnt-1 at 45, 60 and 75 DAS. Inoculation of seeds with 100% of RD of Rhizobium gave maximum plant height, number of branches plant-1 and nodules plant-1. It is noticed that Binasoybean-4 with the application of 100% of RD of Rhizobium inoculum produced the tallest plant and number of branches plant-1 at 45 DAS but at 60 DAS, though the tallest plant was found in the variety Binasoybean-4 with 100% of RD of Rhizobium inoculum but it was statistically identical to Binasoybean-3 with 100% of RD of Rhizobium inoculum. Binasoybean-4 with 100% of RD of Rhizobium inoculum also gave maximum number of branches plant-1 at 75 DAS. But Binasoybena-3 with 100% of RD of Rhizobium inoculum produced the highest number of nodules plant-1 at 60 DAS. In case of variety Binasoybean-1 performed superiorly in terms of all the yield and yield contributing characters. Application of 100% of RD of Rhizobium inoculum also showed superior performance. The highest seed yield (2.92 t ha-1) was recorded in Binasoybean-3 with the application of 100% of RD Rhizobium inoculum. The highest protein content was also documented in this treatment combination. Finally, it may conclude that Binasoybean-3 with the application of 100% of RD Rhizobium inoculum might be recommended for maximizing seed yield and to get best quality soybean.
{"title":"Effect of Rhizobium inoculum on the Growth, Yield and Quality of Soybean","authors":"M. Rabbani, M. Salam, Swapon Paul, S. Kheya","doi":"10.5455/jbau.141905","DOIUrl":"https://doi.org/10.5455/jbau.141905","url":null,"abstract":"Rhizobium inoculation can increase soybean yield, but its performance is influenced by soybean genotypes. The objective of the study was to assess the effect of Rhizobium inoculum on the growth, yield and quality of soybean varieties. In this regard, five different rates of Rhizobium inoculum were applied on eight distinct soybean varieties namely Shohag, BARI Soybean-5, BARI Soybean-6, PB-1, Binasoybean-1, Binasoybean-2, Binasoybean-3 and Binasoybean-4. The experiment was set up using a randomized complete block design with three replications. Soybean varieties showed variability in terms of plant stature, number of branches plant-1 and number of nodules plant-1 at different days after sowing. Among the varieties, Binasoybean-4 produced the tallest plant at 45 and 60 DAS and at 60 DAS variety PB-1 produced the tallest plant. At 45 DAS Binasoybean-2, at 60 DAS BARI Soybean-6 and at 75 DAS Binasoybean-4 produced the highest number of branches plant-1. In case of nodule production, Binasoybean-3 produced the highest number of nodules palnt-1 at 45, 60 and 75 DAS. Inoculation of seeds with 100% of RD of Rhizobium gave maximum plant height, number of branches plant-1 and nodules plant-1. It is noticed that Binasoybean-4 with the application of 100% of RD of Rhizobium inoculum produced the tallest plant and number of branches plant-1 at 45 DAS but at 60 DAS, though the tallest plant was found in the variety Binasoybean-4 with 100% of RD of Rhizobium inoculum but it was statistically identical to Binasoybean-3 with 100% of RD of Rhizobium inoculum. Binasoybean-4 with 100% of RD of Rhizobium inoculum also gave maximum number of branches plant-1 at 75 DAS. But Binasoybena-3 with 100% of RD of Rhizobium inoculum produced the highest number of nodules plant-1 at 60 DAS. In case of variety Binasoybean-1 performed superiorly in terms of all the yield and yield contributing characters. Application of 100% of RD of Rhizobium inoculum also showed superior performance. The highest seed yield (2.92 t ha-1) was recorded in Binasoybean-3 with the application of 100% of RD Rhizobium inoculum. The highest protein content was also documented in this treatment combination. Finally, it may conclude that Binasoybean-3 with the application of 100% of RD Rhizobium inoculum might be recommended for maximizing seed yield and to get best quality soybean.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81905186","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}
M. Uddin, Sumya Nahian, U. Habiba, Sanjida Yeasmin, B. Saha
Organo-mineral fertilizers (OMF) are becoming popular because of their potential to increase crop quality and yield. A pot experiment was carried out in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University (BAU), Mymensingh to observe the effect of newly formulated peat soil urea (PSU) on the nutritional quality of baby corn in comparison to commercial urea. The experiment was laid out following a completely randomized design (CRD) with 4 replicates. In this trial, three sources of nitrogen (N) (urea, PSU-L, and PSU-H) were used to apply N at rates of 50, 75, and 100% of the suggested N application dose. Soil application of PSU fertilizer showed a significant influence on the nutritional parameters of baby corn. A slightly higher chlorophyll a and b were found in PSU treated plants than in commercial urea. The highest cob and fodder N, P, K, Ca, Mg, S, Fe, and Zn content were found in baby corn that received PSU treatment than commercial urea treatment. The application of PSU in soil showed about 23, 15 and 21% higher N, P, and Zn uptake by baby corn, respectively than commercial urea. Again, N uptake showed a strong correlation with the uptake of other nutrients. In light of the overall findings PSU could be used as N source for the production of high-quality baby corn.
{"title":"Peat soil based organo-mineral nitrogen fertilizer performed better than urea in improving nutritional quality of baby corn","authors":"M. Uddin, Sumya Nahian, U. Habiba, Sanjida Yeasmin, B. Saha","doi":"10.5455/jbau.147612","DOIUrl":"https://doi.org/10.5455/jbau.147612","url":null,"abstract":"Organo-mineral fertilizers (OMF) are becoming popular because of their potential to increase crop quality and yield. A pot experiment was carried out in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University (BAU), Mymensingh to observe the effect of newly formulated peat soil urea (PSU) on the nutritional quality of baby corn in comparison to commercial urea. The experiment was laid out following a completely randomized design (CRD) with 4 replicates. In this trial, three sources of nitrogen (N) (urea, PSU-L, and PSU-H) were used to apply N at rates of 50, 75, and 100% of the suggested N application dose. Soil application of PSU fertilizer showed a significant influence on the nutritional parameters of baby corn. A slightly higher chlorophyll a and b were found in PSU treated plants than in commercial urea. The highest cob and fodder N, P, K, Ca, Mg, S, Fe, and Zn content were found in baby corn that received PSU treatment than commercial urea treatment. The application of PSU in soil showed about 23, 15 and 21% higher N, P, and Zn uptake by baby corn, respectively than commercial urea. Again, N uptake showed a strong correlation with the uptake of other nutrients. In light of the overall findings PSU could be used as N source for the production of high-quality baby corn.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82665468","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}
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