Pub Date : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60691
K. Fatema, M. Nur
This study intended to provide information on the fishermen engaged in fishing in the Tangon River, Thakurgaon. To assess their existing status, some essential socio-economic information e.g. literacy, religion, health hazards, sanitation and medical facilities, family structure, income level, types of fishermen, fishing, and constraints were taken into account. Results indicated that the majority of the fishermen (77%) belonged to the age class >35-50 years and were dominated by Muslims (89%). Three educational categories were recorded where illiteracy was main (52%), 24% had a primary level of education, and 24% could only sign. This survey revealed that the fishermen near Tangon River are leading measurable life due to great financial hardship. Therefore, proper conservation and management measures must be taken to enhance the fisheries biodiversity in the river so that the fishermen can harvest sufficient fish on a sustainable basis. The government, as well as non-government organizations (NGOs), should take appropriate initiatives to enhance their living standard and to improve such techniques/alternatives that can benefit the underprivileged fishermen to hold present fishing profession in the Tangon River. Environ. Sci. & Natural Resources, 13(1&2): 70-75, 2020
{"title":"Status of the Fishermen Living at the Tangon River Bank- A Case Study from the North-west of Bangladesh","authors":"K. Fatema, M. Nur","doi":"10.3329/jesnr.v13i1-2.60691","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60691","url":null,"abstract":"This study intended to provide information on the fishermen engaged in fishing in the Tangon River, Thakurgaon. To assess their existing status, some essential socio-economic information e.g. literacy, religion, health hazards, sanitation and medical facilities, family structure, income level, types of fishermen, fishing, and constraints were taken into account. Results indicated that the majority of the fishermen (77%) belonged to the age class >35-50 years and were dominated by Muslims (89%). Three educational categories were recorded where illiteracy was main (52%), 24% had a primary level of education, and 24% could only sign. This survey revealed that the fishermen near Tangon River are leading measurable life due to great financial hardship. Therefore, proper conservation and management measures must be taken to enhance the fisheries biodiversity in the river so that the fishermen can harvest sufficient fish on a sustainable basis. The government, as well as non-government organizations (NGOs), should take appropriate initiatives to enhance their living standard and to improve such techniques/alternatives that can benefit the underprivileged fishermen to hold present fishing profession in the Tangon River. \u0000Environ. Sci. & Natural Resources, 13(1&2): 70-75, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87856493","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 : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60696
F. Alam, NR Saha, M.S. Islam, M. Ahmed, M. Haque
Chemical pesticides are indiscriminately used for pest management and vector control. However, many farming communities are unaware of the dangers associated with the chemicals. This study assessed vegetable farmers' perception of the environmental impact of pesticide use in Bangladesh concerning the farmers’ knowledge and type. The farmers' socioeconomic characteristics and their relationship to some of the study variables, their attitude towards pesticides' environmental consequences, and their level of pesticide related knowledge were investigated. In this study, 882 farmers from nine districts participated through in-depth interviews and observations on-farm. The majority of farmers were males aged between 30 and 40 (32.44% in winter and 32.87% in summer). Moreover, 29.77% of the winter vegetable growers can sign their name only, but for the summer season’s 31.02% were educated up to high school. For the winter season, the highest 74.44% of respondents belonged to focal farmers who believed pesticides could be hazardous to their health. Only 1.68% of control farmers agreed pesticide use could lead to secondary pest resurgence. For the summer season, farmers were most concerned (60.19%) about the health risks to farm-workers, while secondary pest resurgence was the least concerned. In general, the focal farmers had a high level of knowledge and concern about pesticide hazards compared to the proximal and control farmers. Comprehensive intervention measures are required to mitigate pesticide-related health and environmental risks, including pesticide safety training programs for farmers, which could promote sustainable agricultural development while minimizing the environmental and health risks of pesticide misuse. Environ. Sci. & Natural Resources, 13(1&2): 94-99, 2020
{"title":"Perception on environmental concern of pesticide use in relation to Framers’ knowledge","authors":"F. Alam, NR Saha, M.S. Islam, M. Ahmed, M. Haque","doi":"10.3329/jesnr.v13i1-2.60696","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60696","url":null,"abstract":"Chemical pesticides are indiscriminately used for pest management and vector control. However, many farming communities are unaware of the dangers associated with the chemicals. This study assessed vegetable farmers' perception of the environmental impact of pesticide use in Bangladesh concerning the farmers’ knowledge and type. The farmers' socioeconomic characteristics and their relationship to some of the study variables, their attitude towards pesticides' environmental consequences, and their level of pesticide related knowledge were investigated. In this study, 882 farmers from nine districts participated through in-depth interviews and observations on-farm. The majority of farmers were males aged between 30 and 40 (32.44% in winter and 32.87% in summer). Moreover, 29.77% of the winter vegetable growers can sign their name only, but for the summer season’s 31.02% were educated up to high school. For the winter season, the highest 74.44% of respondents belonged to focal farmers who believed pesticides could be hazardous to their health. Only 1.68% of control farmers agreed pesticide use could lead to secondary pest resurgence. For the summer season, farmers were most concerned (60.19%) about the health risks to farm-workers, while secondary pest resurgence was the least concerned. In general, the focal farmers had a high level of knowledge and concern about pesticide hazards compared to the proximal and control farmers. Comprehensive intervention measures are required to mitigate pesticide-related health and environmental risks, including pesticide safety training programs for farmers, which could promote sustainable agricultural development while minimizing the environmental and health risks of pesticide misuse. \u0000Environ. Sci. & Natural Resources, 13(1&2): 94-99, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81355983","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 : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60685
M. Sultana, M. Azad, M. Islam
Cucurbit fruit fly (Bactrocera cucurbitae) is the major pest of Cucumber (Cucumis sativus L.), which severely damage the cucumber production. This study was carried to evaluate the efficacy of fourteen botanicals such as Chili (Capsicum frutescens), Garlic (Allium sativum), Onion (Allium cepa), Ginger (Zingiber officinale), Carrot leaves(Daucuscarota subsp. Sativus), Bitter gourd (Momordic acharantia), young Tomato (Solanum lycopersicum), Mahogany seed (Swietenia macrophylla), Eucalyptus leaves (Eucalyptus globulus), Black plum leaves (Syzygium cumini), Jackfruit leaves (Artocarpus heterophyllus), Neem leaves (Azadirachta indica), Black pepper (Piper nigrum) and Garden croton leaves (Codiaeum variegatum) to control the cucurbit fruit fly infestation in experimental cucumber (Green Rohini F1 Hybrid Cucumber) field during March 15, 2021– May 14, 2021. This study observed a less number of cucurbit fruit fly attack on cucumber fruits in Ginger treatment. In this treatment, only 7.06% fruits were infested by cucurbit fruit fly. The Ginger treatment reduced 14.17 times fruit fly infestation compare to control. However, a high number of cucurbit fruit fly infestations were found in Bitter gourd, young Tomato, Mahogany and Garden croton treatments. Cucurbit fruit fly infestation was low (12.50%) in Neem treatment. This treatment showed best performance on cucumber size (cm) and yield (gm). The lowest yield was found in Bitter gourd treatment. The Neem treatment kept about 3.54 times better performance in respect to cucumber yield than that of control treatment. Therefore, Neem leaves (Azadirachta indica) and Ginger (Zingiber officinale) extracts can be used as bio-pesticide for eco-friendly control of cucurbit fruit fly infestation in cucumber field. Environ. Sci. & Natural Resources, 13(1&2): 38-42, 2020
{"title":"Screening of Some Botanicals for Eco-friendly Control of Cucurbit Fruit Fly (Bactrocera cucurbitae) Infestation in Experimental Cucumber Field","authors":"M. Sultana, M. Azad, M. Islam","doi":"10.3329/jesnr.v13i1-2.60685","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60685","url":null,"abstract":"Cucurbit fruit fly (Bactrocera cucurbitae) is the major pest of Cucumber (Cucumis sativus L.), which severely damage the cucumber production. This study was carried to evaluate the efficacy of fourteen botanicals such as Chili (Capsicum frutescens), Garlic (Allium sativum), Onion (Allium cepa), Ginger (Zingiber officinale), Carrot leaves(Daucuscarota subsp. Sativus), Bitter gourd (Momordic acharantia), young Tomato (Solanum lycopersicum), Mahogany seed (Swietenia macrophylla), Eucalyptus leaves (Eucalyptus globulus), Black plum leaves (Syzygium cumini), Jackfruit leaves (Artocarpus heterophyllus), Neem leaves (Azadirachta indica), Black pepper (Piper nigrum) and Garden croton leaves (Codiaeum variegatum) to control the cucurbit fruit fly infestation in experimental cucumber (Green Rohini F1 Hybrid Cucumber) field during March 15, 2021– May 14, 2021. This study observed a less number of cucurbit fruit fly attack on cucumber fruits in Ginger treatment. In this treatment, only 7.06% fruits were infested by cucurbit fruit fly. The Ginger treatment reduced 14.17 times fruit fly infestation compare to control. However, a high number of cucurbit fruit fly infestations were found in Bitter gourd, young Tomato, Mahogany and Garden croton treatments. Cucurbit fruit fly infestation was low (12.50%) in Neem treatment. This treatment showed best performance on cucumber size (cm) and yield (gm). The lowest yield was found in Bitter gourd treatment. The Neem treatment kept about 3.54 times better performance in respect to cucumber yield than that of control treatment. Therefore, Neem leaves (Azadirachta indica) and Ginger (Zingiber officinale) extracts can be used as bio-pesticide for eco-friendly control of cucurbit fruit fly infestation in cucumber field. \u0000Environ. Sci. & Natural Resources, 13(1&2): 38-42, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75413062","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 : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60698
MC Sil, M. Haque, A. Shila, M. Howlader, R. Ahmed
A field experiment was conducted at the research farm of Patuakhali Science and Technology University (PSTU), Patuakhali from November 2011 to April 2012 to find out the most adventitious mulch material for Cauliflower production. The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Six different mulches (M) along with control were applied as treatment viz M0 =Control (without mulches), M1 =Black polythene, M2 =White polythene, M3 =Saw dust, M4 =Water hyacinth and M5 =Rice straw. Data were compared on plant height (cm); number of leaves/plant; leaf area (cm2)/plant; leaf area index (cm2); dry weight of root, leaf and stem (g/plant); total dry matter (g/plant); crop growth rate (g/m2/day); relative growth rate (g/cm2/day); diameter of curd (cm2); curd fresh weight (g/plant) and curd yield (t/ha). Significant variation was obtained in case of all the compared parameters among the treatments but water hyacinth mulch gave highest value compared to control and other mulches. Finally, it can be concluded that water hyacinth mulch was found most effective for cauliflower production under AEZ-13 of the southern part of Bangladesh. Environ. Sci. & Natural Resources, 13(1&2): 110-117, 2020
{"title":"Effect of Different Mulches on Growth and Yield of Cauliflower in Southern Bangladesh","authors":"MC Sil, M. Haque, A. Shila, M. Howlader, R. Ahmed","doi":"10.3329/jesnr.v13i1-2.60698","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60698","url":null,"abstract":"A field experiment was conducted at the research farm of Patuakhali Science and Technology University (PSTU), Patuakhali from November 2011 to April 2012 to find out the most adventitious mulch material for Cauliflower production. The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Six different mulches (M) along with control were applied as treatment viz M0 =Control (without mulches), M1 =Black polythene, M2 =White polythene, M3 =Saw dust, M4 =Water hyacinth and M5 =Rice straw. Data were compared on plant height (cm); number of leaves/plant; leaf area (cm2)/plant; leaf area index (cm2); dry weight of root, leaf and stem (g/plant); total dry matter (g/plant); crop growth rate (g/m2/day); relative growth rate (g/cm2/day); diameter of curd (cm2); curd fresh weight (g/plant) and curd yield (t/ha). Significant variation was obtained in case of all the compared parameters among the treatments but water hyacinth mulch gave highest value compared to control and other mulches. Finally, it can be concluded that water hyacinth mulch was found most effective for cauliflower production under AEZ-13 of the southern part of Bangladesh. \u0000Environ. Sci. & Natural Resources, 13(1&2): 110-117, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90149634","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 : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60699
M. Rehnuma, AA Riad, RI Shakur
The study was conducted to investigate the concentration of PM2.5, PM10, CH4, CO2, CO, SO2 in the air of Tangail Sadar Upazila, Tangail. In the study area air quality data has been collected from eight sampling stations namely MBSTU campus, Baby stand, Nirala more, New bus stand, Rabna bypass, College gate, Old bus stand, Nogor jalfoi during dry season. The air quality data collected by using Aeroqual S 500 series. The concentrations of PM2.5, PM10, CH4, CO2, CO, SO2 found in air were ranged from 0.03-0.06, 0.04-0.10, 12.3-36, 919-1238.2, 0.00- 2.61, 0.00-0.48 mg/m3, respectively. The concentration of PM2.5, PM10, CO, SO2 that have been found were higher than Bangladesh standard and WHO guideline. Their sources could be the motor vehicles, road dust, coal burning, road construction, open dumping of solid waste in Tangail Sadar Upazila. Appropriate engine design control strategies and maintenance services should be introduced for reducing emission. Efficient solid waste management system should be introduced to control emission from construction sources. Environ. Sci. & Natural Resources, 13(1&2): 118-122, 2020
{"title":"Assessment of Air Quality Parameters at Different Locations of Tangail Sadar Upazila, Tangail","authors":"M. Rehnuma, AA Riad, RI Shakur","doi":"10.3329/jesnr.v13i1-2.60699","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60699","url":null,"abstract":"The study was conducted to investigate the concentration of PM2.5, PM10, CH4, CO2, CO, SO2 in the air of Tangail Sadar Upazila, Tangail. In the study area air quality data has been collected from eight sampling stations namely MBSTU campus, Baby stand, Nirala more, New bus stand, Rabna bypass, College gate, Old bus stand, Nogor jalfoi during dry season. The air quality data collected by using Aeroqual S 500 series. The concentrations of PM2.5, PM10, CH4, CO2, CO, SO2 found in air were ranged from 0.03-0.06, 0.04-0.10, 12.3-36, 919-1238.2, 0.00- 2.61, 0.00-0.48 mg/m3, respectively. The concentration of PM2.5, PM10, CO, SO2 that have been found were higher than Bangladesh standard and WHO guideline. Their sources could be the motor vehicles, road dust, coal burning, road construction, open dumping of solid waste in Tangail Sadar Upazila. Appropriate engine design control strategies and maintenance services should be introduced for reducing emission. Efficient solid waste management system should be introduced to control emission from construction sources. \u0000Environ. Sci. & Natural Resources, 13(1&2): 118-122, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74508859","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 : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60690
M. Hoque, Mz Islam, M. Rahman, B. Biswas, N. Mahmud
The present investigations attempted to study the effects of red, blue and green LEDs effect on seed germination, first leaf length, first leaf blade length, root length, seedling fresh and dry weight. Seeds of five rice varieties were germinated and seedlings were grown under dark and red, blue, green LEDs lighting system (6 h photoperiod and 18 h dark) set at 20 to 24± 2 °C for day and night respectively and 70 ± 2 % relative humidity in a control chamber for 14 days (starting 3 days after plated for germination). The result showed that germination percent increased significantly in BRRIdhan52 and BRRIdhan75 under red-blue-green LEDs than dark. First leaf length increased in dark than LEDs treatment. Longest leaf (10.42 cm) was recorded in BRRIdhan86 in dark and under LEDs in BRRIdhan75 (5.70 cm). First leaf blade length was highest in BRRIdhan52 (2.56 cm) under LEDs treatment and in dark BRRIdhan67 had the longest (2.48 cm). Root length was also increased significantly in studied rice varieties. Though, longest root was found in dark in BRRIdhan71 (6.69 cm) and under LEDs, BRRIdhan71 had the longest root (6.35 cm). Seedling fresh and dry weight were highest under red-blue-dark LEDs treatment. BRRIdhan86 had the highest and BRRIdhan67 had the lowest seedling fresh and dry weight with a range of 0.323g to 0.451g and 0.037g to 0.052g respectively than dark condition. Root length showed positive significant correlation with seedling fresh weight (r = 0.876) and seedling dry weight (r = 0.873). Whereas seedling fresh weight showed complete correlation (r = 1) with seedling dry weight. Response index was negative for first leaf length in the studied rice varieties. Highest response index (35.93) was observed for seedling fresh and dry weight in BRRIdhan75 and BRRIdhan86. Environ. Sci. & Natural Resources, 13(1&2): 63-69, 2020
{"title":"Effect of Red, Blue, Green LEDs on the Germination and Seedling Growth of Rice","authors":"M. Hoque, Mz Islam, M. Rahman, B. Biswas, N. Mahmud","doi":"10.3329/jesnr.v13i1-2.60690","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60690","url":null,"abstract":"The present investigations attempted to study the effects of red, blue and green LEDs effect on seed germination, first leaf length, first leaf blade length, root length, seedling fresh and dry weight. Seeds of five rice varieties were germinated and seedlings were grown under dark and red, blue, green LEDs lighting system (6 h photoperiod and 18 h dark) set at 20 to 24± 2 °C for day and night respectively and 70 ± 2 % relative humidity in a control chamber for 14 days (starting 3 days after plated for germination). The result showed that germination percent increased significantly in BRRIdhan52 and BRRIdhan75 under red-blue-green LEDs than dark. First leaf length increased in dark than LEDs treatment. Longest leaf (10.42 cm) was recorded in BRRIdhan86 in dark and under LEDs in BRRIdhan75 (5.70 cm). First leaf blade length was highest in BRRIdhan52 (2.56 cm) under LEDs treatment and in dark BRRIdhan67 had the longest (2.48 cm). Root length was also increased significantly in studied rice varieties. Though, longest root was found in dark in BRRIdhan71 (6.69 cm) and under LEDs, BRRIdhan71 had the longest root (6.35 cm). Seedling fresh and dry weight were highest under red-blue-dark LEDs treatment. BRRIdhan86 had the highest and BRRIdhan67 had the lowest seedling fresh and dry weight with a range of 0.323g to 0.451g and 0.037g to 0.052g respectively than dark condition. Root length showed positive significant correlation with seedling fresh weight (r = 0.876) and seedling dry weight (r = 0.873). Whereas seedling fresh weight showed complete correlation (r = 1) with seedling dry weight. Response index was negative for first leaf length in the studied rice varieties. Highest response index (35.93) was observed for seedling fresh and dry weight in BRRIdhan75 and BRRIdhan86. \u0000Environ. Sci. & Natural Resources, 13(1&2): 63-69, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81771034","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 : 2022-07-06DOI: 10.3329/jesnr.v13i1-2.60682
MS Islam, S. Sultana, R. Sarker, M. Kabir, M. Ahammed
This study was conducted to assess the environmental impacts of the proposed Kashil Bridge over the river Jhinai at Basail upazila of Tangail district in Bangladesh during January to September 2019. The environmental impact assessment (EIA) is a mandatory process to assess the environmental consequences of an existing or proposed project and to delineate any environmental management measures that must be integrated into the plan to ensure that the project is technically, economically, socially and environmentally acceptable. The EIA preparation led to the identification of potential environmental and social impacts due to proposed bridge pre-construction, construction and operation activities on the Jhinai River and feasible remedial measures as included in the Environmental Management Plan (EMP). A field mobilization was conducted in project area to find out the environmental baseline (surface water, groundwater, soil, sediments, air, noise and ecology) information and identification of possible impacts. The focused group discussions (FGDs), questionnaire survey (QS) and key informants interview (KII) were conducted to collect relevant information. Secondary data were collected from Local Government Engineering Department, Upazila Agriculture Office, Upazila Fisheries Office, Department of Environment (DoE) and published relevant articles. Analyzing overall impacts, EIA study found that these possible negative impacts are considerable if some mitigation measures are applied. This new bridge will not only increase the communication facilities but also increase the economic flow together with other facilities. Finally, the EIA study suggested some defined EMP which will help to minimize the probable adverse impacts of the bridge construction site over the Jhinai River. Environ. Sci. & Natural Resources, 13(1&2): 13-18, 2020
{"title":"Environmental Impact Assessment: Implications of Bridge Construction Venture in Bangladesh","authors":"MS Islam, S. Sultana, R. Sarker, M. Kabir, M. Ahammed","doi":"10.3329/jesnr.v13i1-2.60682","DOIUrl":"https://doi.org/10.3329/jesnr.v13i1-2.60682","url":null,"abstract":"This study was conducted to assess the environmental impacts of the proposed Kashil Bridge over the river Jhinai at Basail upazila of Tangail district in Bangladesh during January to September 2019. The environmental impact assessment (EIA) is a mandatory process to assess the environmental consequences of an existing or proposed project and to delineate any environmental management measures that must be integrated into the plan to ensure that the project is technically, economically, socially and environmentally acceptable. The EIA preparation led to the identification of potential environmental and social impacts due to proposed bridge pre-construction, construction and operation activities on the Jhinai River and feasible remedial measures as included in the Environmental Management Plan (EMP). A field mobilization was conducted in project area to find out the environmental baseline (surface water, groundwater, soil, sediments, air, noise and ecology) information and identification of possible impacts. The focused group discussions (FGDs), questionnaire survey (QS) and key informants interview (KII) were conducted to collect relevant information. Secondary data were collected from Local Government Engineering Department, Upazila Agriculture Office, Upazila Fisheries Office, Department of Environment (DoE) and published relevant articles. Analyzing overall impacts, EIA study found that these possible negative impacts are considerable if some mitigation measures are applied. This new bridge will not only increase the communication facilities but also increase the economic flow together with other facilities. Finally, the EIA study suggested some defined EMP which will help to minimize the probable adverse impacts of the bridge construction site over the Jhinai River. \u0000Environ. Sci. & Natural Resources, 13(1&2): 13-18, 2020","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85151065","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.V12I1-2.52031
B. Akter, M. Ali, M. Islam
An experiment was conducted to evaluate the effectiveness of plant materials against yellow mite (Polyphagotarsonemus latus) on jute (Corchorus olitorius) cv. 0–9897 in both greenhouse and field condition at BJRI during the period from March to October 2016. In greenhouse premises, the highest mortality (69.39, 67.77, 63.86, 62.43 and 61.47%) was recorded in extract of neem seed kernel @ 1:20, mehogony seed, pithraj seed, turmeric powder and green neem leaf, respectively. In field condition, the highest reduction (70.20%) of infestation over control, lowest nodes plant–1 (52.50), tallest plant (3.10 m) and highest yield increased (38.60%) over control were observed in neem seed kernel extract @ 1:20. In conclusion, neem seed kernel extract, mahogany seed extracts, pithraj seed extract, green neem leaf extract and turmeric powder extract @ 1:20 can be safely used by the farmers as components of IPM program of Jute.
{"title":"Effectiveness of Some Plant Materials against Jute Yellow Mite on Corchorus Olitorius","authors":"B. Akter, M. Ali, M. Islam","doi":"10.3329/JESNR.V12I1-2.52031","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.52031","url":null,"abstract":"An experiment was conducted to evaluate the effectiveness of plant materials against yellow mite (Polyphagotarsonemus latus) on jute (Corchorus olitorius) cv. 0–9897 in both greenhouse and field condition at BJRI during the period from March to October 2016. In greenhouse premises, the highest mortality (69.39, 67.77, 63.86, 62.43 and 61.47%) was recorded in extract of neem seed kernel @ 1:20, mehogony seed, pithraj seed, turmeric powder and green neem leaf, respectively. In field condition, the highest reduction (70.20%) of infestation over control, lowest nodes plant–1 (52.50), tallest plant (3.10 m) and highest yield increased (38.60%) over control were observed in neem seed kernel extract @ 1:20. In conclusion, neem seed kernel extract, mahogany seed extracts, pithraj seed extract, green neem leaf extract and turmeric powder extract @ 1:20 can be safely used by the farmers as components of IPM program of Jute.","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"16 1","pages":"165-170"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87922533","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.V12I1-2.51978
M. Sarker, M. Akter, S. Ali, Samsul Haque, Md. Mizanur Rahman
Storm surge was adversely affected the life of people and property of coastal region of Bangladesh due to cyclone Roanu on 22 May 2016. It is important to delineate this surge extent and pattern which helps in the vulnerability assessment for relief and rehabilitation purposes. Optical sensor is not enough for outlining the affected areas. Because during cyclone, bad weather (cloud) usually prevails over the swamped area. Microwave remote sensing, can solve the problem because the radar pulse can penetrate cloud cover and it has ability to sharply distinguish between land and water. Combination of microwave and optical sensor found very useful to mark out storm surge inundated area. A change detection approach was implemented through the analysis of pre and post cyclone period. In this approach Landsat8-OLI image have been used for before cyclone and ALOS-PALSAR image have been used in after cyclonic period. Combining the PALSAR and OLI imagery using fusion method allows for the accurate depiction of such kind of violence surge extend. The study reveals that about 497698 (ha) areas have been affected due to storm surge during cyclone Roanu. Environ. Sci. & Natural Resources, 12(1&2): 1-9, 2019
{"title":"Combining Microwave and Optical Sensor to Improve Post Cyclone Affected Area Mapping","authors":"M. Sarker, M. Akter, S. Ali, Samsul Haque, Md. Mizanur Rahman","doi":"10.3329/JESNR.V12I1-2.51978","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.51978","url":null,"abstract":"Storm surge was adversely affected the life of people and property of coastal region of Bangladesh due to cyclone Roanu on 22 May 2016. It is important to delineate this surge extent and pattern which helps in the vulnerability assessment for relief and rehabilitation purposes. Optical sensor is not enough for outlining the affected areas. Because during cyclone, bad weather (cloud) usually prevails over the swamped area. Microwave remote sensing, can solve the problem because the radar pulse can penetrate cloud cover and it has ability to sharply distinguish between land and water. Combination of microwave and optical sensor found very useful to mark out storm surge inundated area. A change detection approach was implemented through the analysis of pre and post cyclone period. In this approach Landsat8-OLI image have been used for before cyclone and ALOS-PALSAR image have been used in after cyclonic period. Combining the PALSAR and OLI imagery using fusion method allows for the accurate depiction of such kind of violence surge extend. The study reveals that about 497698 (ha) areas have been affected due to storm surge during cyclone Roanu. \u0000Environ. Sci. & Natural Resources, 12(1&2): 1-9, 2019","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"19 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88598027","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.V12I1-2.51979
M. Sarker, Samsul Haque, Md. Mizanur Rahman, M. Akter, S. Ali
Cultivation of shrimp mostly in unplanned way has been considered as one of the major environmental disasters of Shamnagar. Villagers surrounding the rivers are mainly involved with fish (shrimp) cultivation. So, fertile agriculture land has been converted to shrimp cultivation. Conventional methods for collecting this information are relatively costly and time consuming. Contrarily, Remote sensing, in conjunction with GIS, has been widely applied and been recognized as a powerful and effective tool in detecting land use and land cover changes. Rapid Eye, Landsat8 images were used to identify land use and land cover of the area during the period 2008 and 2015. Google images were used to identify the micro-level land use features of the same period. Multi-spectral classifications using unsupervised and supervised classification were done and results have been compared based on the field investigation. The study reveals that during the period 2008 to 2015 agricultural practice has been reduced from 35% to 21% and shrimp cultivation area increased from 38% to 50%. Due to the impact of high salinity and salt water intrusion caused by natural disaster, agricultural activities is reduced and farmers have been converted to other practices, as a result shrimp farming is gaining popularity in the area. Environ. Sci. & Natural Resources, 12(1&2): 11-20, 2019
{"title":"Integrated Use of Remote Sensing, GIS and GPS Technology for Monitoring the Environmental Problems of Shyamnagar","authors":"M. Sarker, Samsul Haque, Md. Mizanur Rahman, M. Akter, S. Ali","doi":"10.3329/JESNR.V12I1-2.51979","DOIUrl":"https://doi.org/10.3329/JESNR.V12I1-2.51979","url":null,"abstract":"Cultivation of shrimp mostly in unplanned way has been considered as one of the major environmental disasters of Shamnagar. Villagers surrounding the rivers are mainly involved with fish (shrimp) cultivation. So, fertile agriculture land has been converted to shrimp cultivation. Conventional methods for collecting this information are relatively costly and time consuming. Contrarily, Remote sensing, in conjunction with GIS, has been widely applied and been recognized as a powerful and effective tool in detecting land use and land cover changes. Rapid Eye, Landsat8 images were used to identify land use and land cover of the area during the period 2008 and 2015. Google images were used to identify the micro-level land use features of the same period. Multi-spectral classifications using unsupervised and supervised classification were done and results have been compared based on the field investigation. The study reveals that during the period 2008 to 2015 agricultural practice has been reduced from 35% to 21% and shrimp cultivation area increased from 38% to 50%. Due to the impact of high salinity and salt water intrusion caused by natural disaster, agricultural activities is reduced and farmers have been converted to other practices, as a result shrimp farming is gaining popularity in the area. \u0000Environ. Sci. & Natural Resources, 12(1&2): 11-20, 2019","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"11 11 1","pages":"11-20"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79581792","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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