Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.52037
F. Shikha, M. Hossain, S. Yesmin
Temperature has great influence on the changes in physico-chemical and microbiological parameters of fish muscle. The present study was conducted to observe the changes in physico-chemical and microbiological parameters of pangas (Pangasius pangasius) muscle during ice storage. At the initial stage of storage TVBN-value was found 1.37mg/100g, peroxide value 1.1m.eq/kg of oil, breaking force 1005.67 (± 3.93g), protein solubility 86.37% and microbial load 7.6×103 CFU/g which reached to 28.25 mg/100g, 19 meq./kg of fish oil, 480.23 (± 0.88g), 36% and 4.6 ×106 CFU/g, respectively after 16 days of storage in ice. On the basis of the obtained results the study could be concluded aspangas (Pangasius pangasius) can be stored in ice up to 16 days.
{"title":"Changes in Physico-Chemical and Microbiological Parameters of Pangas (Pangasius pangasius) Muscle During Ice Storage","authors":"F. Shikha, M. Hossain, S. Yesmin","doi":"10.3329/JESNR.V12I1-2.52037","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52037","url":null,"abstract":"Temperature has great influence on the changes in physico-chemical and microbiological parameters of fish muscle. The present study was conducted to observe the changes in physico-chemical and microbiological parameters of pangas (Pangasius pangasius) muscle during ice storage. At the initial stage of storage TVBN-value was found 1.37mg/100g, peroxide value 1.1m.eq/kg of oil, breaking force 1005.67 (± 3.93g), protein solubility 86.37% and microbial load 7.6×103 CFU/g which reached to 28.25 mg/100g, 19 meq./kg of fish oil, 480.23 (± 0.88g), 36% and 4.6 ×106 CFU/g, respectively after 16 days of storage in ice. On the basis of the obtained results the study could be concluded aspangas (Pangasius pangasius) can be stored in ice up to 16 days.","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"35 1","pages":"199-208"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81258053","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.52011
M. A. Salam, F. Tazneen, A. Chowdhury
Geomorphology is closely related to geology, soil science, hydrology and environmental science and is being increasingly applied in planning, mining and hydrological sectors, and within environmental consultancy and tourism. The study area lies in the north-eastern part of the country and tectonically this area belongs to Surma Basin situated into Bengal Fore deep zone of Bengal Basin also known as Sylhet Trough. Under this study an attempt was made to establish the relationship between geomorphic unit and existing landuse based on remote sensing data. In the study area nine landuse categories were identified through remote sensing and GIS techniques. Two different physiographic units which are North-Eastern Terrace Land and Surma-Kushiyara Flood Plain are belongs to the study are. Moreover two surface geological units include Young Gravelly Sand and Marsh Clay and Peat are also there. From analysis no relationship has been found between landuse classes with its physiography and surface geology.
{"title":"Geomorphological Study of Jaflong Area near Dauki Fault Using Remote Sensing and Geographic Information System","authors":"M. A. Salam, F. Tazneen, A. Chowdhury","doi":"10.3329/JESNR.V12I1-2.52011","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52011","url":null,"abstract":"Geomorphology is closely related to geology, soil science, hydrology and environmental science and is being increasingly applied in planning, mining and hydrological sectors, and within environmental consultancy and tourism. The study area lies in the north-eastern part of the country and tectonically this area belongs to Surma Basin situated into Bengal Fore deep zone of Bengal Basin also known as Sylhet Trough. Under this study an attempt was made to establish the relationship between geomorphic unit and existing landuse based on remote sensing data. In the study area nine landuse categories were identified through remote sensing and GIS techniques. Two different physiographic units which are North-Eastern Terrace Land and Surma-Kushiyara Flood Plain are belongs to the study are. Moreover two surface geological units include Young Gravelly Sand and Marsh Clay and Peat are also there. From analysis no relationship has been found between landuse classes with its physiography and surface geology.","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"90 1","pages":"151-155"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84572761","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.52032
AA Bakky, M. Hoque, MS Islam
An experiment was conducted to produce ethanol/biofuel from cassava flour which reduce both consumption of crude oil and environmental pollution. Cassava flour hydrolysate with standard glucose and sucrose solutions were used as controls. The effects of yeast concentrations (5, 15 and 20%) and fermentation time (24, 48, 72, 96 and 120 h) on alcohol yield from CFH were also studied. The maximum carbon-dioxide evolved during fermentation was 8.57 g recorded by cassava flour hydrolysate while the conversion efficiency of sugars to alcohol was 247.6, 97.14 and 92.51% for cassava flour hydrolysate, standard glucose and sucrose solutions, respectively. Alcohol produced was mostly ethanol with traces of methanol. However, yeast concentrations did not showed any significant effect but fermentation time had significant impact on alcohol yield which suggests that the high yield of alcohol could be obtained from cassava flour hydrolysate.
{"title":"Production of Biofuel from Cassava","authors":"AA Bakky, M. Hoque, MS Islam","doi":"10.3329/JESNR.V12I1-2.52032","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52032","url":null,"abstract":"An experiment was conducted to produce ethanol/biofuel from cassava flour which reduce both consumption of crude oil and environmental pollution. Cassava flour hydrolysate with standard glucose and sucrose solutions were used as controls. The effects of yeast concentrations (5, 15 and 20%) and fermentation time (24, 48, 72, 96 and 120 h) on alcohol yield from CFH were also studied. The maximum carbon-dioxide evolved during fermentation was 8.57 g recorded by cassava flour hydrolysate while the conversion efficiency of sugars to alcohol was 247.6, 97.14 and 92.51% for cassava flour hydrolysate, standard glucose and sucrose solutions, respectively. Alcohol produced was mostly ethanol with traces of methanol. However, yeast concentrations did not showed any significant effect but fermentation time had significant impact on alcohol yield which suggests that the high yield of alcohol could be obtained from cassava flour hydrolysate.","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"15 1","pages":"171-174"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75607606","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.51980
G. Biswas, M. Hoque, M. Kabir, M. Rehnuma
The study was conducted to investigate the energy efficiency of traditional and improved cooking stove, potential energy conservation using improved stove and overall environmental impacts of those stoves at Thaipara of Magura district in Bangladesh. In the study area, almost 100% of the households use biomass as their cooking fuel in traditional stoves. Questionnaire Survey (QS) was conducted to fulfill the research objectives. The result of the study showed that total biomass energy consumption is 14897 GJ per year, whereas, the per capita cooking energy consumption is about 4.82 GJ per year. The results also revealed that biomass: fuel wood, dung and crop residues are the 100% sources of the total energy used in the cooking sectors. The combination of high demand aggravated by low use efficiency has contributed to deforestation, rural poverty and the energy shortage in the study village. Results of the study stated that by introducing improved stove with higher level of efficiency, well ventilation and using good quality of fuel can reduce the harmful impacts of cooking energy utilization and cooking systems on environment significantly. In this regard, formulation and implementation of a nationwide high efficiency cooking stove dissemination program would be very promising for cooking energy conservation at rural sectors.
{"title":"Cooking Energy Conservation by Using Improved Stove: a Case Study on Thaipara Village of Magura Bangladesh","authors":"G. Biswas, M. Hoque, M. Kabir, M. Rehnuma","doi":"10.3329/JESNR.V12I1-2.51980","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.51980","url":null,"abstract":"The study was conducted to investigate the energy efficiency of traditional and improved cooking stove, potential energy conservation using improved stove and overall environmental impacts of those stoves at Thaipara of Magura district in Bangladesh. In the study area, almost 100% of the households use biomass as their cooking fuel in traditional stoves. Questionnaire Survey (QS) was conducted to fulfill the research objectives. The result of the study showed that total biomass energy consumption is 14897 GJ per year, whereas, the per capita cooking energy consumption is about 4.82 GJ per year. The results also revealed that biomass: fuel wood, dung and crop residues are the 100% sources of the total energy used in the cooking sectors. The combination of high demand aggravated by low use efficiency has contributed to deforestation, rural poverty and the energy shortage in the study village. Results of the study stated that by introducing improved stove with higher level of efficiency, well ventilation and using good quality of fuel can reduce the harmful impacts of cooking energy utilization and cooking systems on environment significantly. In this regard, formulation and implementation of a nationwide high efficiency cooking stove dissemination program would be very promising for cooking energy conservation at rural sectors.","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"48 1","pages":"21-27"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74866466","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.51984
S. Begum, S. Sultana, Ahmed, M. Azad
Pesticide residues in vegetables have become a major concern associated with food safety issues. Five types of winter vegetables like bean, brinjal, tomato, cauliflower and cabbage were collected from six markets of Rajshahi District during January, 2019 in Bangladesh. Residues of commonly used pesticides (Acephate, Dimethoate, Diazinon, Fenotrothion, Malathion, Chlorpyrifos and Quinalphos) in winter vegetable samples were determined using Gas Chromatography-Flame Thermionic Detector (GC-FTD) procedures. A quick, easy, cheap, effective, rugged and safe (QuEChERS) method with acetate buffering (AOAC Official Method 2007.01) was used for sample preparation. Out of 30 samples, pesticide residues were found only in one brinjal and two tomato samples. The result showed that tomato samples collected from Shaheb bazar and Kharkhari bazar of Rajshahi City contained 0.047 mg/kg and 0.139 mg/kg dimethoate residue, respectively. Brinjal sample collected from Shalbagan bazar, Rajshahi, contained 0.052 mg/kg dimethoate residues. The detected pesticide residue dimethoate of these three samples was higher than maximum residue level (0.01 mg/kg).
{"title":"Pesticide Residue Analysis from Winter Vegetables Collected from Six Markets of Rajshahi Bangladesh","authors":"S. Begum, S. Sultana, Ahmed, M. Azad","doi":"10.3329/JESNR.V12I1-2.51984","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.51984","url":null,"abstract":"Pesticide residues in vegetables have become a major concern associated with food safety issues. Five types of winter vegetables like bean, brinjal, tomato, cauliflower and cabbage were collected from six markets of Rajshahi District during January, 2019 in Bangladesh. Residues of commonly used pesticides (Acephate, Dimethoate, Diazinon, Fenotrothion, Malathion, Chlorpyrifos and Quinalphos) in winter vegetable samples were determined using Gas Chromatography-Flame Thermionic Detector (GC-FTD) procedures. A quick, easy, cheap, effective, rugged and safe (QuEChERS) method with acetate buffering (AOAC Official Method 2007.01) was used for sample preparation. Out of 30 samples, pesticide residues were found only in one brinjal and two tomato samples. The result showed that tomato samples collected from Shaheb bazar and Kharkhari bazar of Rajshahi City contained 0.047 mg/kg and 0.139 mg/kg dimethoate residue, respectively. Brinjal sample collected from Shalbagan bazar, Rajshahi, contained 0.052 mg/kg dimethoate residues. The detected pesticide residue dimethoate of these three samples was higher than maximum residue level (0.01 mg/kg).","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"20 1","pages":"43-50"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86682975","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.51987
.. M.M.Islam, D. Yesmin, S. Islam, S. Sultana, M. Azad
This study was conducted to evaluate the efficacy of five plant extracts at different concentration for managing the late blight disease of tomato in experimental field of University of Rajshahi. The antimicrobial activity of five plant extracts such as Water gourd (Lagenaria siceraria), Eucalyptus (Eucalyptus chamadulonsis), Garlic (Allium sativum), Babla (Acacia nilotica) and Black Cumin (Nigella sativa) was tested for controlling the late blight disease causing pathogens Phytophthora infestans. The number of branching of tomato plant was highest in T15 treatment (Black Cumin 5%) and lowest in T5 (Garlic clove 10%) and T13 (Babla leaves 2.5%). The maximum number of late blight affected leaves were found inT1 (control) and T6 (Garlic clove (5%) treatments, and minimum in T14 (Black Cumin 10%). A highest number of fresh tomato was recorded in T14 (Black Cumin 10%) and T16 (Black Cumin 2.5%) whereas the lowest performance was observed in T7 (Garlic clove 2.5%). The highest number of late blight affected rotten tomato was observed inT12 (Babla leaves 5%) and the lowest in T5 (Garlic clove 10%). The yield of tomato (g) was found maximum in T15 treatment (Black Cumin 5%) and lowest in T6 (Garlic clove 5%) treatment.
{"title":"Efficacy of Five Plant Extracts against Late Blight Disease of Tomato in Experimental Field","authors":".. M.M.Islam, D. Yesmin, S. Islam, S. Sultana, M. Azad","doi":"10.3329/JESNR.V12I1-2.51987","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.51987","url":null,"abstract":"This study was conducted to evaluate the efficacy of five plant extracts at different concentration for managing the late blight disease of tomato in experimental field of University of Rajshahi. The antimicrobial activity of five plant extracts such as Water gourd (Lagenaria siceraria), Eucalyptus (Eucalyptus chamadulonsis), Garlic (Allium sativum), Babla (Acacia nilotica) and Black Cumin (Nigella sativa) was tested for controlling the late blight disease causing pathogens Phytophthora infestans. The number of branching of tomato plant was highest in T15 treatment (Black Cumin 5%) and lowest in T5 (Garlic clove 10%) and T13 (Babla leaves 2.5%). The maximum number of late blight affected leaves were found inT1 (control) and T6 (Garlic clove (5%) treatments, and minimum in T14 (Black Cumin 10%). A highest number of fresh tomato was recorded in T14 (Black Cumin 10%) and T16 (Black Cumin 2.5%) whereas the lowest performance was observed in T7 (Garlic clove 2.5%). The highest number of late blight affected rotten tomato was observed inT12 (Babla leaves 5%) and the lowest in T5 (Garlic clove 10%). The yield of tomato (g) was found maximum in T15 treatment (Black Cumin 5%) and lowest in T6 (Garlic clove 5%) treatment.","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"2 1","pages":"67-71"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82018320","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.51985
MG Mortuja, M. Uddin
An agro-climatic study was conducted at different areas (Bhatiapara, Kashiar Char and Morichar Char) of Mymensingh district with 25 years of climatic data (i.e., temperature, humidity and rainfall) to observe the climatic variability and their impact on the productivity of three types of crops such as Boro, Jute and Wheat. Production of all the three crops were found as increasing. In Boro season, the production increased by 0.057 ton per hectare per year. Jute production increased by 0.029 ton per hectare and Wheat production increased by 0.067 ton per hectare in each year, respectively. Humidity has influence on seasonal Boro production whereas temperature and rainfall didn’t influence the production. Temperature has influences on both Jute and Wheat production. From correlation analysis, it was revealed that average humidity has considerable influence on seasonal Boro production than all other crops. However, most of the time the production showed increasing trend with some exceptions. The study recommends that local adaptation practices should be scrutinized, the role of institutional support should be highlighted and national adaptation strategies and resilience should be strengthened. Environ. Sci. & Natural Resources, 12(1&2): 51-55, 2019
{"title":"Impact of Climatic Variables on Major Field Crops in Char Areas of Mymensingh District","authors":"MG Mortuja, M. Uddin","doi":"10.3329/JESNR.V12I1-2.51985","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.51985","url":null,"abstract":"An agro-climatic study was conducted at different areas (Bhatiapara, Kashiar Char and Morichar Char) of Mymensingh district with 25 years of climatic data (i.e., temperature, humidity and rainfall) to observe the climatic variability and their impact on the productivity of three types of crops such as Boro, Jute and Wheat. Production of all the three crops were found as increasing. In Boro season, the production increased by 0.057 ton per hectare per year. Jute production increased by 0.029 ton per hectare and Wheat production increased by 0.067 ton per hectare in each year, respectively. Humidity has influence on seasonal Boro production whereas temperature and rainfall didn’t influence the production. Temperature has influences on both Jute and Wheat production. From correlation analysis, it was revealed that average humidity has considerable influence on seasonal Boro production than all other crops. However, most of the time the production showed increasing trend with some exceptions. The study recommends that local adaptation practices should be scrutinized, the role of institutional support should be highlighted and national adaptation strategies and resilience should be strengthened. \u0000Environ. Sci. & Natural Resources, 12(1&2): 51-55, 2019","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85062651","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.52008
M. Farukh, M. Islam, L. Akter, R. Khatun
In this study, Sunshine duration data of eight divisional headquarters of Bangladesh Meteorological Stations (Dhaka, Rangpur, Rajshahi, Mymensingh, Sylhet, Barishal, Khulna and Chattagram) were analyzed to evaluate the long-term changes and trends. The data used are the BMD data spanning from 1980 to 2010. The annual sunshine duration has decreased by the month of (June –September) from 1980 to 2010. Seasonal changes in sunshine duration were also analyzed where the maximum decline was found in rainy-monsoon season (June – September), the winter season (December – February), then the post-monsoon season (October – November) and the minimum in the pre-monsoon season (March – May). Analysis of observed data before and after 2000 represents the sunshine durations have decreasing trends in all divisional headquarters of Bangladesh except Chattagram station during the month of (January – December). General Circulation Model (GCM) defined that the maximum sunshine hour was decline north-east and south-west in all divisional headquarters of Bangladesh during the month of (June – September) and the minimum sunshine hour was decline in eastern part of the country during the month of (March – May).
{"title":"Trend and Variability Analysis of Sunshine Duration in Divisional Headquarters of Bangladesh","authors":"M. Farukh, M. Islam, L. Akter, R. Khatun","doi":"10.3329/JESNR.V12I1-2.52008","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52008","url":null,"abstract":"In this study, Sunshine duration data of eight divisional headquarters of Bangladesh Meteorological Stations (Dhaka, Rangpur, Rajshahi, Mymensingh, Sylhet, Barishal, Khulna and Chattagram) were analyzed to evaluate the long-term changes and trends. The data used are the BMD data spanning from 1980 to 2010. The annual sunshine duration has decreased by the month of (June –September) from 1980 to 2010. Seasonal changes in sunshine duration were also analyzed where the maximum decline was found in rainy-monsoon season (June – September), the winter season (December – February), then the post-monsoon season (October – November) and the minimum in the pre-monsoon season (March – May). Analysis of observed data before and after 2000 represents the sunshine durations have decreasing trends in all divisional headquarters of Bangladesh except Chattagram station during the month of (January – December). General Circulation Model (GCM) defined that the maximum sunshine hour was decline north-east and south-west in all divisional headquarters of Bangladesh during the month of (June – September) and the minimum sunshine hour was decline in eastern part of the country during the month of (March – May).","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"19 1","pages":"127-133"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82796525","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.52007
Satyen Mondal, L. Akter, H. Hiya, M. Farukh
The Sunamganj district is covered by major Haor systems in the north-eastern region of Bangladesh. Flash flood is the most commonly occurring water related disaster in the Haor areas. During the flash flood it is very common that people lost their primary agricultural productions which are the only source of their livelihood. The present study focuses on the effects of 2017 early flash flooding on rice and fish production of Sunamganj Haor areas. The flood caused enormous damage to agriculture such as rice especially Boro rice and fish production on which the Haor dwellers rely upon for their livelihood. The total affected land of Boro rice cultivation in Haors of Sunamganj was 149,224 hectare and the total amount of damaged rice was 393,855 metric ton (MT). The total number of affected farmers was 315,084. The early flash flood also affects the quality of Haor water which caused the death of fishes. The total amount of damaged fish was 49.75 MT and the loss was 158.70 lakh taka. The total number of affected fishermen was 44,445. This findings could be very useful for the environmental scientists to predict the probable future effects on agricultural production due to early flash flood events in Sunamganj Haors areas. Environ. Sci. & Natural Resources, 12(1&2): 117-125, 2019
{"title":"Effects of 2017 Early Flash Flooding on Agriculture in Haor Areas of Sunamganj","authors":"Satyen Mondal, L. Akter, H. Hiya, M. Farukh","doi":"10.3329/JESNR.V12I1-2.52007","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52007","url":null,"abstract":"The Sunamganj district is covered by major Haor systems in the north-eastern region of Bangladesh. Flash flood is the most commonly occurring water related disaster in the Haor areas. During the flash flood it is very common that people lost their primary agricultural productions which are the only source of their livelihood. The present study focuses on the effects of 2017 early flash flooding on rice and fish production of Sunamganj Haor areas. The flood caused enormous damage to agriculture such as rice especially Boro rice and fish production on which the Haor dwellers rely upon for their livelihood. The total affected land of Boro rice cultivation in Haors of Sunamganj was 149,224 hectare and the total amount of damaged rice was 393,855 metric ton (MT). The total number of affected farmers was 315,084. The early flash flood also affects the quality of Haor water which caused the death of fishes. The total amount of damaged fish was 49.75 MT and the loss was 158.70 lakh taka. The total number of affected fishermen was 44,445. This findings could be very useful for the environmental scientists to predict the probable future effects on agricultural production due to early flash flood events in Sunamganj Haors areas. \u0000Environ. Sci. & Natural Resources, 12(1&2): 117-125, 2019","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"13 1","pages":"117-125"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91530833","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}
Pub Date : 2021-02-11DOI: 10.3329/JESNR.V12I1-2.52038
U. Monira, Ma Ali, A. Sultana, R. Islam
Seeds of hybrid rice variety Heera-2 was collected from Mymensingh district in Bangladesh. Longevity of Bipolaris oryzae was studied in 2012 to 2016 at Seed Pathology Centre, Bangladesh Agricultural University, Seed processing &preservation center and Seed Pathology Laboratory of Supreme Seed Company Limited. The data collected from the experiments were analyzed for test of significance and compared the treatment means by using DMRT at 5% level of probability following the Statistical tool for Agricultural Research (STAR) 2.1 program.The longevity of B. oryzae was observed till five years by blotter incubation methods, seedling symptom test and growing on test. Both untreated and seeds treated with Vitaflo 200FF (carboxin and thiram) were kept in jute bag and polybag stored for five years under both normal and dehumidified condition. The inocula of B. oryzae on Hybrid Heera 2 seed remained viable up to five years. When the seed samples were stored under dehumidified condition, the highest incidence of B. oryzae was recorded in case of jute bag after five years. After treated with Vitaflo 200FF, there was no any infection of B. oryzae under both storage condition
杂交水稻品种Heera-2的种子采集自孟加拉国Mymensingh地区。2012年至2016年在孟加拉国农业大学种子病理中心、种子加工与保存中心和Supreme Seed Company Limited种子病理实验室对稻谷双星的寿命进行了研究。采用STAR (Statistical tool for Agricultural Research) 2.1程序，采用5%概率水平的DMRT对试验数据进行显著性检验和处理手段比较。采用吸墨培养法、苗期症状试验、生长试验等方法，观察米曲菌的寿命至5年。将未经处理和经Vitaflo 200FF (carboxin和thiram)处理的种子分别放在黄麻袋和塑料袋中，在正常和除湿条件下保存5年。稻瘟病菌在杂交品种Heera 2种子上接种后可存活5年。在干燥条件下贮藏5年后，黄麻袋装稻瘟病菌的发病率最高。经Vitaflo 200FF处理后，两种贮藏条件下均未发现米芽孢杆菌侵染
{"title":"Longevity of Bipolaris oryzae on HEERA-2 Hybrid Rice Seed","authors":"U. Monira, Ma Ali, A. Sultana, R. Islam","doi":"10.3329/JESNR.V12I1-2.52038","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52038","url":null,"abstract":"Seeds of hybrid rice variety Heera-2 was collected from Mymensingh district in Bangladesh. Longevity of Bipolaris oryzae was studied in 2012 to 2016 at Seed Pathology Centre, Bangladesh Agricultural University, Seed processing &preservation center and Seed Pathology Laboratory of Supreme Seed Company Limited. The data collected from the experiments were analyzed for test of significance and compared the treatment means by using DMRT at 5% level of probability following the Statistical tool for Agricultural Research (STAR) 2.1 program.The longevity of B. oryzae was observed till five years by blotter incubation methods, seedling symptom test and growing on test. Both untreated and seeds treated with Vitaflo 200FF (carboxin and thiram) were kept in jute bag and polybag stored for five years under both normal and dehumidified condition. The inocula of B. oryzae on Hybrid Heera 2 seed remained viable up to five years. When the seed samples were stored under dehumidified condition, the highest incidence of B. oryzae was recorded in case of jute bag after five years. After treated with Vitaflo 200FF, there was no any infection of B. oryzae under both storage condition","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"10 1","pages":"209-213"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78572919","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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