M. Begum, M Zahid Hasan, Morsalina Khatun, M. Hossain
Adoption of new agricultural technologies is always at the center of policy interest in Bangladesh as it generates higher farm productivity and income for the farmers. Despite the visible benefits of many of the new agricultural technologies, including farm machinery and management practices, farmers either do not adopt them or it takes a long time to begin the adoption process and scaling up. The study was carried out to determine the impacts of adoption of Bangladesh Agricultural Research Institute (BARI) maize sheller on productivity and farm income in Mymensigh district. Primary data were collected from 41 adopters and 79 non-adopters of BARI maize sheller. Propensity score matching method was used to assess the impacts of BARI maize sheller adoption. It was found that the rate of adoption of BARI maize sheller was 26.73% at farm level. Probit model showed that experience in maize cultivation of the farmer and training enhanced the adoption of BARI maize sheller and family size had negative effect on adoption of BARI maize sheller. BARI maize sheller adoption on average increased maize productivity and farm income by 327.08 kg/ha and 34 to 65% respectively for adopters compared to non-adopters. Policy implications included more investment in training facilities from public agencies to sustain and increase the productivity and income of maize farmers. Modifying the training approach could provide opportunity to young maize farmers to increase their know-how. Various government and non-government organizations working in Bangladesh including Mymensingh district need to promote a rapid uptake and scaling up of BARI maize sheller.
{"title":"Determinants and Impact of the Adoption of Bangladesh Agricultural Research Institute Developed Maize Sheller in Mymensingh District of Bangladesh","authors":"M. Begum, M Zahid Hasan, Morsalina Khatun, M. Hossain","doi":"10.5455/jbau.141358","DOIUrl":"https://doi.org/10.5455/jbau.141358","url":null,"abstract":"Adoption of new agricultural technologies is always at the center of policy interest in Bangladesh as it generates higher farm productivity and income for the farmers. Despite the visible benefits of many of the new agricultural technologies, including farm machinery and management practices, farmers either do not adopt them or it takes a long time to begin the adoption process and scaling up. The study was carried out to determine the impacts of adoption of Bangladesh Agricultural Research Institute (BARI) maize sheller on productivity and farm income in Mymensigh district. Primary data were collected from 41 adopters and 79 non-adopters of BARI maize sheller. Propensity score matching method was used to assess the impacts of BARI maize sheller adoption. It was found that the rate of adoption of BARI maize sheller was 26.73% at farm level. Probit model showed that experience in maize cultivation of the farmer and training enhanced the adoption of BARI maize sheller and family size had negative effect on adoption of BARI maize sheller. BARI maize sheller adoption on average increased maize productivity and farm income by 327.08 kg/ha and 34 to 65% respectively for adopters compared to non-adopters. Policy implications included more investment in training facilities from public agencies to sustain and increase the productivity and income of maize farmers. Modifying the training approach could provide opportunity to young maize farmers to increase their know-how. Various government and non-government organizations working in Bangladesh including Mymensingh district need to promote a rapid uptake and scaling up of BARI maize sheller.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81109390","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. Rahman, M. Alam, S. Barman, M. Hossain, K. Tikadar
The COVID-19 pandemic has posed unprecedented challenges for fisheries products export, which serves as a major export driver and employment for the people of Bangladesh. The countrywide lockdown has severely disrupted the supply chain; and port closures and international cargo restrictions have threatened export markets. To unpack the COVID impacts, the detailed fisheries products export-oriented primary data of 45 fish processing plants were collected from Fish Inspection and Quality Control (FIQC), Khulna between January 2020 and December 2021. Ten key informant interviews were conducted with Upazila Fisheries Officer, FIQC personnel and stakeholders of fish processing plants to know the official export data during the pandemic periods. This was followed by further focus group discussions on fish processing plant employees to assess the real impact of COVID-19 on the export of fisheries products in Southwest Bangladesh. In this paper, our study clearly shows that the COVID-19 has resulted in a squeeze export volume of fisheries products during the first wave of Covid-19 from March to May 2020. By 2020, it was observed that the amounts of exported products were somewhat stable, however the unit price (US$/MT) continued to decline. Moreover, the export market improved slightly in 2021 and the unit price of export products continued to rise. We also found some other adverse effects of COVID-19 such as delay in product shipment, increased cost of packing materials, purchase order cancelation from buyers, shortage and the increased price of raw materials, complete shutdown of few processing plants, increased transportation cost, shortage of containers, employee lay off from the company, etc. To meet these challenges, the government must take necessary measures to address this vulnerable sector and formulate appropriate policies to minimize the adverse effects of such uncertainties in the future.
{"title":"EFFECTS OF COVID-19 ON FISHERIES PRODUCTS EXPORTED FROM SOUTHWEST BANGLADESH: A CASE STUDY","authors":"M. Rahman, M. Alam, S. Barman, M. Hossain, K. Tikadar","doi":"10.5455/jbau.10262","DOIUrl":"https://doi.org/10.5455/jbau.10262","url":null,"abstract":"The COVID-19 pandemic has posed unprecedented challenges for fisheries products export, which serves as a major export driver and employment for the people of Bangladesh. The countrywide lockdown has severely disrupted the supply chain; and port closures and international cargo restrictions have threatened export markets. To unpack the COVID impacts, the detailed fisheries products export-oriented primary data of 45 fish processing plants were collected from Fish Inspection and Quality Control (FIQC), Khulna between January 2020 and December 2021. Ten key informant interviews were conducted with Upazila Fisheries Officer, FIQC personnel and stakeholders of fish processing plants to know the official export data during the pandemic periods. This was followed by further focus group discussions on fish processing plant employees to assess the real impact of COVID-19 on the export of fisheries products in Southwest Bangladesh. In this paper, our study clearly shows that the COVID-19 has resulted in a squeeze export volume of fisheries products during the first wave of Covid-19 from March to May 2020. By 2020, it was observed that the amounts of exported products were somewhat stable, however the unit price (US$/MT) continued to decline. Moreover, the export market improved slightly in 2021 and the unit price of export products continued to rise. We also found some other adverse effects of COVID-19 such as delay in product shipment, increased cost of packing materials, purchase order cancelation from buyers, shortage and the increased price of raw materials, complete shutdown of few processing plants, increased transportation cost, shortage of containers, employee lay off from the company, etc. To meet these challenges, the government must take necessary measures to address this vulnerable sector and formulate appropriate policies to minimize the adverse effects of such uncertainties in the future.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81134713","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, N. Sultana, Moutuza Mostaree, S. Sultana, T. Farjana, M. Pervin, M. Khan
{"title":"Detection of abortifacient infectious agents in clinical cases of Black Bengal goat","authors":"M. Islam, N. Sultana, Moutuza Mostaree, S. Sultana, T. Farjana, M. Pervin, M. Khan","doi":"10.5455/jbau.105284","DOIUrl":"https://doi.org/10.5455/jbau.105284","url":null,"abstract":"<jats:p />","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81346613","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}
In the north-eastern part of Bangladesh, direct discharge of Acid Mine Drainage (AMD) from upstream Khashi hill areas of Meghalaya into trans-boundary Rivers causes huge losses of fish and crops. The purpose of this study is to investigate the impact of coal mines on water quality on the basis of physico-chemical parameters, such as temperature, pH, electrical conductivity, dissolved oxygen, biological oxygen demand, chemical oxygen demand, total dissolved solids, and heavy metals viz. Fe, Pb, Cr and Cd. For this purpose, a total of 15 samples were collected with 3 replications from 5 different locations of Jadukata River. The mean values of the analyzed parameters for 5 different sampling sites ranged: pH: 6.63-8.47; temperature: 25.77-26.8 °C; EC 344.51-383.50 μS cm-1; DO: 7.60-8.30 mg l-1; TDS 337.33-454.33 ppm; BOD: 0.70-1.93 mg l-1; COD: 1.20-2.30 mg l-1; Fe: 0.69-0.86 mg l-1; Pb: 0.05-0.07 mg l-1; Cr: 0.04-0.06 mg l-1. Analyzed results show that, most of the values of the considered parameters were higher at Lakmachara point, which is the nearest site to the Indian border and low at Rajargao, the farthest from the border. Almost all the values of Pb and Cr in different sampling points were higher than their permissible limits for drinking but, the values were within limit for irrigation activities. Other parameters were found within the permissible limit for drinking and irrigation usage. The gradual descending variations of the analyzed parameters from downstream to upstream were mostly due to the effect of AMD, which was mixed with the water of Jadukata River. Leaching of heavy metals near Khashi hill areas of Meghalaya at the upstream of Jadukata River are the major causes of contamination of the Jadukata River.
{"title":"IMPACT OF TRANS-BOUNDARY COAL MINES ON WATER QUALITY \u0000OF RECEIVING STREAMS IN NORTH-EASTERN BANGLADESH","authors":"M. Farukh, Liza Akter, M. Islam","doi":"10.5455/jbau.138730","DOIUrl":"https://doi.org/10.5455/jbau.138730","url":null,"abstract":"In the north-eastern part of Bangladesh, direct discharge of Acid Mine Drainage (AMD) from upstream Khashi hill areas of Meghalaya into trans-boundary Rivers causes huge losses of fish and crops. The purpose of this study is to investigate the impact of coal mines on water quality on the basis of physico-chemical parameters, such as temperature, pH, electrical conductivity, dissolved oxygen, biological oxygen demand, chemical oxygen demand, total dissolved solids, and heavy metals viz. Fe, Pb, Cr and Cd. For this purpose, a total of 15 samples were collected with 3 replications from 5 different locations of Jadukata River. The mean values of the analyzed parameters for 5 different sampling sites ranged: pH: 6.63-8.47; temperature: 25.77-26.8 °C; EC 344.51-383.50 μS cm-1; DO: 7.60-8.30 mg l-1; TDS 337.33-454.33 ppm; BOD: 0.70-1.93 mg l-1; COD: 1.20-2.30 mg l-1; Fe: 0.69-0.86 mg l-1; Pb: 0.05-0.07 mg l-1; Cr: 0.04-0.06 mg l-1. Analyzed results show that, most of the values of the considered parameters were higher at Lakmachara point, which is the nearest site to the Indian border and low at Rajargao, the farthest from the border. Almost all the values of Pb and Cr in different sampling points were higher than their permissible limits for drinking but, the values were within limit for irrigation activities. Other parameters were found within the permissible limit for drinking and irrigation usage. The gradual descending variations of the analyzed parameters from downstream to upstream were mostly due to the effect of AMD, which was mixed with the water of Jadukata River. Leaching of heavy metals near Khashi hill areas of Meghalaya at the upstream of Jadukata River are the major causes of contamination of the Jadukata River.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83802591","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. Miah, M. Anwar, F. Uddin, A. Sultana, A. Islam, S. Yeasmin
Seed priming is a pre-sowing hydration technique which leads to a physiological condition triggering germination and enhancing uniform seedling emergence. It is a promising tool for enhancing drought tolerance in plants which is essential for promoting economic development by coping up with the adverse effects of climate change on crop productivity. So, a better understanding of seed priming efficacy is required. Therefore an experiment was conducted with a view to investigating the effect of seed priming agent on the weed growth and yield performance of high yielding rice variety BRRI dhan29 sown on different dates following dry direct seeded condition in boro season. Two sowing dates viz., 20th January (early or optimum sowing as control) and 20th February (late sowing as high temperature stress during reproductive stage) and seed priming agents included NaCl (20000 and 30000 ppm), KCl (20000 and 30000 ppm), CaCl2 (20000 and 30000 ppm), CuSO4 (50 and 75 ppm), ZnSO4 (10000 and 15000 ppm), Na2MoO4 (2 and 3 ppm) and PEG (100 and 150 ppm) were used. Plant height and tillers of BRRI dhan29 were significantly enhanced when seeds were sown early (20th January) and due to seed priming at early stage and at harvest. Among the yield parameters grains panicle-1, grain yield, and straw yield were produced more by early sowing (20th January). Grains panicle-1, 1000-grain weight, and grain yield were positively influenced due to seed priming. Considering the growth and yield parameters and yield of rice, early sowing and seed priming with KCl or CaCl2 were found as the best. Seed priming produced no significant effect on the weed growth. There was no significant effect of interaction between sowing date and priming agent on crop characters and yield parameters. Therefore, seed priming with 20000 ppm KCl or 20000 ppm CaCl2 and early sowing is recommended for increasing the yield of dry direct seeded boro rice (BRRI dhan29). If somehow early sowing is not possible, seed priming with 20000 ppm KCl or 20000 ppm CaCl2 is highly recommended or mitigating temperature stress during reproductive stage and enhancing yield of BRRI dhan29 under dry direct seeded, late sowncondition.
{"title":"Seed Priming Influence on High Temperature Tolerance and Weed Suppressive Ability of Late Sown Dry Direct Seeded Winter Rice","authors":"M. Miah, M. Anwar, F. Uddin, A. Sultana, A. Islam, S. Yeasmin","doi":"10.5455/jbau.112372","DOIUrl":"https://doi.org/10.5455/jbau.112372","url":null,"abstract":"Seed priming is a pre-sowing hydration technique which leads to a physiological condition triggering germination and enhancing uniform seedling emergence. It is a promising tool for enhancing drought tolerance in plants which is essential for promoting economic development by coping up with the adverse effects of climate change on crop productivity. So, a better understanding of seed priming efficacy is required. Therefore an experiment was conducted with a view to investigating the effect of seed priming agent on the weed growth and yield performance of high yielding rice variety BRRI dhan29 sown on different dates following dry direct seeded condition in boro season. Two sowing dates viz., 20th January (early or optimum sowing as control) and 20th February (late sowing as high temperature stress during reproductive stage) and seed priming agents included NaCl (20000 and 30000 ppm), KCl (20000 and 30000 ppm), CaCl2 (20000 and 30000 ppm), CuSO4 (50 and 75 ppm), ZnSO4 (10000 and 15000 ppm), Na2MoO4 (2 and 3 ppm) and PEG (100 and 150 ppm) were used. Plant height and tillers of BRRI dhan29 were significantly enhanced when seeds were sown early (20th January) and due to seed priming at early stage and at harvest. Among the yield parameters grains panicle-1, grain yield, and straw yield were produced more by early sowing (20th January). Grains panicle-1, 1000-grain weight, and grain yield were positively influenced due to seed priming. Considering the growth and yield parameters and yield of rice, early sowing and seed priming with KCl or CaCl2 were found as the best. Seed priming produced no significant effect on the weed growth. There was no significant effect of interaction between sowing date and priming agent on crop characters and yield parameters. Therefore, seed priming with 20000 ppm KCl or 20000 ppm CaCl2 and early sowing is recommended for increasing the yield of dry direct seeded boro rice (BRRI dhan29). If somehow early sowing is not possible, seed priming with 20000 ppm KCl or 20000 ppm CaCl2 is highly recommended or mitigating temperature stress during reproductive stage and enhancing yield of BRRI dhan29 under dry direct seeded, late sowncondition.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90638089","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. Sarker, M. Anwar, H. Reefat, Hasan Islam, M. Alam, Mujtaba Haq
Gracilaria tenuistipitata var. Liui is a red seaweed, artificially cultivated in Nuniachara sea beach at Cox's Bazar, mostly utilized as a human diet and nutritional supplement in Bangladesh. It has certain industrial applications as well. To explore the diversified application of this seaweed in livestock feed industries to reduce enteric methane production from ruminant, a feeding trial was done at the Pranisheba R and D cattle farm, Savar, Dhaka. An ambient methane amount was measured with and without application of seaweed in concentrate feed by a sensor based IoT device of remote cowshed monitoring system. Other clinical parameters like feeding amount, body temperature, consistency of faeces was physically monitored. After proximate analysis, the composition of total crude protein, crude fiber and moisture of Gracilaria tenuistipitata var. Liui were 24.09%, 0.18%, 21.31%. The quantity of total energy was 2615 Kcal/kg. Addition of 1% seaweed to the cattle concentrated diet on a dry matter basis lowered the average ambient methane concentration from 48.30 ± 4.45 to 41.02 ± 3.41ppm, the differences were statistically significant (p<0.05). Average Body temperature, amount of daily feed intake and consistency of faeces remain unchanged. However, precise assessment of methane reduction potentiality requires a respiration chamber with an air control facility, but this observation might provide a first concept of this species as potential natural methane emissions reducer in Bangladesh.
Gracilaria tenuistipitata var. Liui是一种红色海藻，在Cox's Bazar的Nuniachara海滩人工养殖，在孟加拉国主要用作人类饮食和营养补充剂。它也有一定的工业应用。为了探索这种海藻在牲畜饲料行业的多样化应用，以减少反刍动物肠道甲烷的产生，在达卡Savar的Pranisheba研发牛场进行了一项饲养试验。通过远程牛棚监测系统基于传感器的物联网设备，测量了在浓缩饲料中施用海藻和不施用海藻时的环境甲烷量。其他临床参数如喂食量、体温、粪便稠度等进行物理监测。经近似分析，柳叶小檗总粗蛋白质、粗纤维和水分含量分别为24.09%、0.18%和21.31%。总能量为2615 Kcal/kg。在干物质基础上，在牛精料饲粮中添加1%海藻，使环境甲烷平均浓度从48.30±4.45 ppm降低至41.02±3.41ppm，差异均有统计学意义(p<0.05)。平均体温、日采食量和粪便稠度保持不变。然而，对甲烷减排潜力的精确评估需要一个带有空气控制设施的呼吸室，但这一观察可能为该物种作为孟加拉国潜在的天然甲烷减排剂提供了第一个概念。
{"title":"Potential Use of Seaweed (Gracilaria Tenuistipitata Var. Liui) for Reduction of Enteric Methane Emissions from Crossbred Dairy Cattle in Bangladesh","authors":"M. Sarker, M. Anwar, H. Reefat, Hasan Islam, M. Alam, Mujtaba Haq","doi":"10.5455/jbau.57822","DOIUrl":"https://doi.org/10.5455/jbau.57822","url":null,"abstract":"Gracilaria tenuistipitata var. Liui is a red seaweed, artificially cultivated in Nuniachara sea beach at Cox's Bazar, mostly utilized as a human diet and nutritional supplement in Bangladesh. It has certain industrial applications as well. To explore the diversified application of this seaweed in livestock feed industries to reduce enteric methane production from ruminant, a feeding trial was done at the Pranisheba R and D cattle farm, Savar, Dhaka. An ambient methane amount was measured with and without application of seaweed in concentrate feed by a sensor based IoT device of remote cowshed monitoring system. Other clinical parameters like feeding amount, body temperature, consistency of faeces was physically monitored. After proximate analysis, the composition of total crude protein, crude fiber and moisture of Gracilaria tenuistipitata var. Liui were 24.09%, 0.18%, 21.31%. The quantity of total energy was 2615 Kcal/kg. Addition of 1% seaweed to the cattle concentrated diet on a dry matter basis lowered the average ambient methane concentration from 48.30 ± 4.45 to 41.02 ± 3.41ppm, the differences were statistically significant (p<0.05). Average Body temperature, amount of daily feed intake and consistency of faeces remain unchanged. However, precise assessment of methane reduction potentiality requires a respiration chamber with an air control facility, but this observation might provide a first concept of this species as potential natural methane emissions reducer in Bangladesh.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76875594","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}
Integrating ergonomics into the manual long handle hoe design will minimize work-related musculoskeletal disorders while improving farm workers' health and safety, consequently improving the performance. To what extent ergonomic design aspects have been incorporated into the existing manual hoe types used by farmworkers in Sri Lanka for different purposes for different soil conditions are unknown. This study used farmworkers as subjects to investigate the ergonomics of five different existing hoe types under sandy soil conditions at Ampara district in Sri Lanka. It was found that the hoe type B, which is found with a longer handle (123 cm), smaller blade size (width-21.4 cm and length- 16.3 cm), less weight (1.8 kg) and blade to handle angle of 70°is the most suitable among all the hoe types tested for hoeing operations in sandy soil. The study also found that farmworkers can discriminate between hoe types based on their suitability for the task. The study suggests that further research works are needed to evaluate the existing hoe types to use in different soils for different purposes, which will help improve the hoe type and improve farm workers' health and performance.
{"title":"Ergonomic evaluation of the manual long handle hoes used in farm work in sandy soil in Sri Lanka","authors":"M. Thariq, K.A.S Hansika, A. Irfeey","doi":"10.5455/jbau.104253","DOIUrl":"https://doi.org/10.5455/jbau.104253","url":null,"abstract":"Integrating ergonomics into the manual long handle hoe design will minimize work-related musculoskeletal disorders while improving farm workers' health and safety, consequently improving the performance. To what extent ergonomic design aspects have been incorporated into the existing manual hoe types used by farmworkers in Sri Lanka for different purposes for different soil conditions are unknown. This study used farmworkers as subjects to investigate the ergonomics of five different existing hoe types under sandy soil conditions at Ampara district in Sri Lanka. It was found that the hoe type B, which is found with a longer handle (123 cm), smaller blade size (width-21.4 cm and length- 16.3 cm), less weight (1.8 kg) and blade to handle angle of 70°is the most suitable among all the hoe types tested for hoeing operations in sandy soil. The study also found that farmworkers can discriminate between hoe types based on their suitability for the task. The study suggests that further research works are needed to evaluate the existing hoe types to use in different soils for different purposes, which will help improve the hoe type and improve farm workers' health and performance.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73416484","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}
Miladun Rima, A. Hannan, S. Rahman, Arif Hasan Khan Robin
Soybean has a high nutritive value and numerous uses. An experiment was conducted to study the genetic variability and heritability of root morphology and nodulation traits along with other yield contributing characters of ten soybean genotypes to observe the relationship among the traits. The experiment was carried out in field conditions and data were collected from four months old plants. Three plants of each genotype were dug up from 40 cm soil depth to collect root traits. Analysis of variance revealed significant differences among soybean genotypes for plant height, ground area, leaves/plant, leaflets/plant, leaf area index, shoot fresh and dry weight, nodules/plant, nodule fresh and dry weight, root fresh and dry weight, primary root length, lateral roots/plant, pods/plant, 100-seeds weight, and yield/plant. A high heritability estimate was estimated for plant height (88.74%), ground area (68.57%), leaves/plant (64.15%), leaflets/plant (61.68%), leaf area index (77.01%), nodules/plant (60.30%), hundred seed weight (85.27%) and yield/plant (69.41%). Correlation analysis showed a significant relationship among the root and shoot traits. The principal component analysis revealed that the first five principal components (PC) explain 81.4% data variation. The soybean genotype PM-78-6-3-13 (S13) showed the maximum plant height, nodule fresh and dry weight, highest root fresh weight and the maximum number of lateral roots per plant, pods/plant and 100-seeds weight. The results suggested that looking at both nodulation and root traits could be useful for yield improvement in soybean.
{"title":"Genetic variability and heritability of nodulation, root morphology, yield contributing traits and their association in soybean","authors":"Miladun Rima, A. Hannan, S. Rahman, Arif Hasan Khan Robin","doi":"10.5455/jbau.123297","DOIUrl":"https://doi.org/10.5455/jbau.123297","url":null,"abstract":"Soybean has a high nutritive value and numerous uses. An experiment was conducted to study the genetic variability and heritability of root morphology and nodulation traits along with other yield contributing characters of ten soybean genotypes to observe the relationship among the traits. The experiment was carried out in field conditions and data were collected from four months old plants. Three plants of each genotype were dug up from 40 cm soil depth to collect root traits. Analysis of variance revealed significant differences among soybean genotypes for plant height, ground area, leaves/plant, leaflets/plant, leaf area index, shoot fresh and dry weight, nodules/plant, nodule fresh and dry weight, root fresh and dry weight, primary root length, lateral roots/plant, pods/plant, 100-seeds weight, and yield/plant. A high heritability estimate was estimated for plant height (88.74%), ground area (68.57%), leaves/plant (64.15%), leaflets/plant (61.68%), leaf area index (77.01%), nodules/plant (60.30%), hundred seed weight (85.27%) and yield/plant (69.41%). Correlation analysis showed a significant relationship among the root and shoot traits. The principal component analysis revealed that the first five principal components (PC) explain 81.4% data variation. The soybean genotype PM-78-6-3-13 (S13) showed the maximum plant height, nodule fresh and dry weight, highest root fresh weight and the maximum number of lateral roots per plant, pods/plant and 100-seeds weight. The results suggested that looking at both nodulation and root traits could be useful for yield improvement in soybean.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82293015","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}
In order to assess the production efficiency of brown shrimp, Metapenaeus monoceros, in brackish water ponds, a feeding experiment was conducted with three different commercial feeds: Quality feed, Saudi-Bangla feed, and Mega feed representing T1, T2 and T3, respectively. After 75 days of cultivation, T1 showed significantly (P<0.05) greater total production than T2 and T3. Survival of shrimp was 66.90% in T1 which was found highest than other two treatments (T2: 63.70% and T3: 62.95%). Net benefit was significantly (P<0.5) highest in T1 (723996 BDT/ha) than T2 (577823 BDT) and T3 (593386 BDT). FCR values in T1 (1.2±0.05) and T2 (1.2±0.02) were significantly (P<0.5) lower than T3 (1.3±0.01), but no significant difference existed between T1 and T2. Benefit-cost ratio (BCR) was 1.80, 1.52 and 1.74 in T1, T2 and T3, respectively. The current study demonstrates that the monoculture of M. monoceros fed with commercial feed (Quality feed) with 45/m2 stocking density would be commercially viable in Bangladesh coast.
{"title":"Evaluation of growth performance of brown shrimp (Metapenaeus monoceros) fed with different commercial feeds in brackishwater pond","authors":"D. Mondal, M. Rahman, M. Islam","doi":"10.5455/jbau.114585","DOIUrl":"https://doi.org/10.5455/jbau.114585","url":null,"abstract":"In order to assess the production efficiency of brown shrimp, Metapenaeus monoceros, in brackish water ponds, a feeding experiment was conducted with three different commercial feeds: Quality feed, Saudi-Bangla feed, and Mega feed representing T1, T2 and T3, respectively. After 75 days of cultivation, T1 showed significantly (P<0.05) greater total production than T2 and T3. Survival of shrimp was 66.90% in T1 which was found highest than other two treatments (T2: 63.70% and T3: 62.95%). Net benefit was significantly (P<0.5) highest in T1 (723996 BDT/ha) than T2 (577823 BDT) and T3 (593386 BDT). FCR values in T1 (1.2±0.05) and T2 (1.2±0.02) were significantly (P<0.5) lower than T3 (1.3±0.01), but no significant difference existed between T1 and T2. Benefit-cost ratio (BCR) was 1.80, 1.52 and 1.74 in T1, T2 and T3, respectively. The current study demonstrates that the monoculture of M. monoceros fed with commercial feed (Quality feed) with 45/m2 stocking density would be commercially viable in Bangladesh coast.","PeriodicalId":15283,"journal":{"name":"Journal of Bangladesh Agricultural University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80021133","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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