Journal of Science, Technology and Environment Informatics
Volume 08 - Issue 01 | Year of Publication: 2019 and 2020
Article Type: Research Article | No. 58, 2019 | Country: Bangladesh | pp. 563-573 | Open Access
Title: Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize
Authors: Md. Jewel Alam, Kazi Shahanara Ahmed, Mozammel Hoque, Abida Munsura, Md. Nazmul Haq Rony and Md. Shamiul Haque
DOI: http://dx.doi.org/10.18801/jstei.080119.58
Title: Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize
Authors: Md. Jewel Alam, Kazi Shahanara Ahmed, Mozammel Hoque, Abida Munsura, Md. Nazmul Haq Rony and Md. Shamiul Haque
DOI: http://dx.doi.org/10.18801/jstei.080119.58
Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize
Abstract
Maize (Zea mays L.) is the second cereal crop in Bangladesh as well as in the world. Huge amount of maize plants become infested due to attack of insect pest. The maize aphid, Rhopalosiphum maidis is one of the most destructive pests of maize crop. Research experiments were conducted on maize in order to evaluate the bio-efficacy of some bio-pesticides for controlling maize aphid under field condition at the Entomology field laboratory, Department of Entomology, Bangladesh Agricultural University (BAU), Mymensigh during two consecutive rabi season of 2017-18 to 2018-19. The experiment was laid out in randomized complete block design (RCBD) with three replications. Maize var. BARI Hybrid Butta-09 variety was used as experimental crop. Five (05) bio-pesticides viz. Neem leaf extract @ 2.0 ml/L, Bishkathali leaf extract @ 2.0 ml/L, Lemon extract @ 2.0 ml/L, Garlic clove extract @ 2.0ml/L, Mahagany seed extract @ 2.0 ml/L and one chemical insecticides namely Imidacloprid 20SL @ 0.25ml/L were used as treatments. Bio-efficacy of bio-pesticides against maize aphid, R. maidis on maize revealed that the treatment of Imidacloprid 20SL was found more effective for controlling R. maidis whereas the descending order of treatments were neem leaf>garlic clove extract>lemon extract>bishkathali leaf extract>mahagany seed extract i. e. neem leaf extract @ 2.0 ml/L can act as an effective bio-pesticides control agent within five bio-pesticides against maize aphid while yield and yield attributes were also higher. On the other hand, based on the maize yield and efficacy of insecticides, the present study showed that a linear positive co-relation (significant correlation) between insect infestation control and yield increase percentage of maize i.e. yield of maize grain were increased due to increase of percentage insect infestation control in maize production.
Key Words: Management, Maize crop, Rhopalosiphum maidis and Bio-pesticides
Abstract
Maize (Zea mays L.) is the second cereal crop in Bangladesh as well as in the world. Huge amount of maize plants become infested due to attack of insect pest. The maize aphid, Rhopalosiphum maidis is one of the most destructive pests of maize crop. Research experiments were conducted on maize in order to evaluate the bio-efficacy of some bio-pesticides for controlling maize aphid under field condition at the Entomology field laboratory, Department of Entomology, Bangladesh Agricultural University (BAU), Mymensigh during two consecutive rabi season of 2017-18 to 2018-19. The experiment was laid out in randomized complete block design (RCBD) with three replications. Maize var. BARI Hybrid Butta-09 variety was used as experimental crop. Five (05) bio-pesticides viz. Neem leaf extract @ 2.0 ml/L, Bishkathali leaf extract @ 2.0 ml/L, Lemon extract @ 2.0 ml/L, Garlic clove extract @ 2.0ml/L, Mahagany seed extract @ 2.0 ml/L and one chemical insecticides namely Imidacloprid 20SL @ 0.25ml/L were used as treatments. Bio-efficacy of bio-pesticides against maize aphid, R. maidis on maize revealed that the treatment of Imidacloprid 20SL was found more effective for controlling R. maidis whereas the descending order of treatments were neem leaf>garlic clove extract>lemon extract>bishkathali leaf extract>mahagany seed extract i. e. neem leaf extract @ 2.0 ml/L can act as an effective bio-pesticides control agent within five bio-pesticides against maize aphid while yield and yield attributes were also higher. On the other hand, based on the maize yield and efficacy of insecticides, the present study showed that a linear positive co-relation (significant correlation) between insect infestation control and yield increase percentage of maize i.e. yield of maize grain were increased due to increase of percentage insect infestation control in maize production.
Key Words: Management, Maize crop, Rhopalosiphum maidis and Bio-pesticides
HOW TO CITE THIS ARTICLE
MLA
Alam, et al. “Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize”. Journal of Science, Technology and Environment Informatics, 08(01) (2019): 563-573.
APA
Alam, M. J., Ahmed, K. S., Hoque, M., Mansura, A., Rony, M. N. H. and Haque, M. S. (2019). Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize. Journal of Science, Technology and Environment Informatics, 08(01), 563-573.
Chicago
Alam, M. J., Ahmed, K. S., Hoque, M., Mansura, A., Rony, M. N. H. and Haque, M. S. “Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize.” Journal of Science, Technology and Environment Informatics 08(01), (2019), 563-573.
Harvard
Alam, M. J., Ahmed, K. S., Hoque, M., Mansura, A., Rony, M. N. H. and Haque, M. S. 2019. Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize. Journal of Science, Technology and Environment Informatics, 08(01), pp. 563-573.
Vancouver
Alam, MJ, Ahmed, KS, Hoque, M, Mansura, A, Rony, MNH and Haque, MS. Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize. Journal of Science, Technology and Environment Informatics. 2019 October 08(01): 563-573.
MLA
Alam, et al. “Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize”. Journal of Science, Technology and Environment Informatics, 08(01) (2019): 563-573.
APA
Alam, M. J., Ahmed, K. S., Hoque, M., Mansura, A., Rony, M. N. H. and Haque, M. S. (2019). Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize. Journal of Science, Technology and Environment Informatics, 08(01), 563-573.
Chicago
Alam, M. J., Ahmed, K. S., Hoque, M., Mansura, A., Rony, M. N. H. and Haque, M. S. “Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize.” Journal of Science, Technology and Environment Informatics 08(01), (2019), 563-573.
Harvard
Alam, M. J., Ahmed, K. S., Hoque, M., Mansura, A., Rony, M. N. H. and Haque, M. S. 2019. Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize. Journal of Science, Technology and Environment Informatics, 08(01), pp. 563-573.
Vancouver
Alam, MJ, Ahmed, KS, Hoque, M, Mansura, A, Rony, MNH and Haque, MS. Bio-efficacy of some bio-pesticides against maize aphid, Rhopalosiphum maidis; a threatening pest of maize. Journal of Science, Technology and Environment Informatics. 2019 October 08(01): 563-573.
Article Type: Research Article | No. 59, 2019 | Country: Bangladesh | pp. 574-582 | Open Access
Title: Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation
Authors: AFM Zakaria and Nur Mohammad Majumder
DOI: http://dx.doi.org/10.18801/jstei.080119.59
Title: Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation
Authors: AFM Zakaria and Nur Mohammad Majumder
DOI: http://dx.doi.org/10.18801/jstei.080119.59
Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation
Abstract
Khasi is one of the major tree-crops-farming ethnic communities of North-East Bangladesh. In this paper, their farming and forestry knowledge is revealed in order to realize the importance of environmental preservation and conservation. What way Khasi administers hill farming practice with deeming locally derived knowledge and why they conserve forest and forestry in terms of agricultural extension without destroying the forest. To understand these issues local people’s climate resilience farming practice and information has been collected through a qualitative method by applying observation, in-depth interview and collective discussion methods from local participants. Data has been analyzed following thematic and descriptive way and findings are conceptualized as research objectives. This study has explored that Khasis’ integrated farming efforts that facilitate to uphold local peoples’ subsistence, greenery landscape, and livelihood security, including essential eco-friendly forest conservation. The study findings also have shown how Khasi agroforestry and cultivation are developed by using local knowledge for improving the rural community, including tree crop farming with the conservation of bio-cultural diversity, and sustainable management of agro-ecosystem.
Key Words: Agroforestry, Livelihood, Tree Conservation and Eco-friendly Environment
Abstract
Khasi is one of the major tree-crops-farming ethnic communities of North-East Bangladesh. In this paper, their farming and forestry knowledge is revealed in order to realize the importance of environmental preservation and conservation. What way Khasi administers hill farming practice with deeming locally derived knowledge and why they conserve forest and forestry in terms of agricultural extension without destroying the forest. To understand these issues local people’s climate resilience farming practice and information has been collected through a qualitative method by applying observation, in-depth interview and collective discussion methods from local participants. Data has been analyzed following thematic and descriptive way and findings are conceptualized as research objectives. This study has explored that Khasis’ integrated farming efforts that facilitate to uphold local peoples’ subsistence, greenery landscape, and livelihood security, including essential eco-friendly forest conservation. The study findings also have shown how Khasi agroforestry and cultivation are developed by using local knowledge for improving the rural community, including tree crop farming with the conservation of bio-cultural diversity, and sustainable management of agro-ecosystem.
Key Words: Agroforestry, Livelihood, Tree Conservation and Eco-friendly Environment
HOW TO CITE THIS ARTICLE
MLA
Zakaria and Majumder “Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation”. Journal of Science, Technology and Environment Informatics 08(01), (2019): 574-582.
APA
Zakaria, A. F. M. and Majumder, N. M. (2019). Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation. Journal of Science, Technology and Environment Informatics, 08(01), 574-582.
Chicago
Zakaria, A. F. M., Majumder, N. M. “Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation”. Journal of Science, Technology and Environment Informatics 08(01), (2019) 574-582.
Harvard
Zakaria, A. F. M. and Majumder, N. M. 2019. Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation. Journal of Science, Technology and Environment Informatics, 08(01), pp. 574-582.
Vancouver
Zakaria, AFM and Majumder, NM. Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation. Journal of Science, Technology and Environment Informatics. 2019 October 08(01), 574-582.
MLA
Zakaria and Majumder “Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation”. Journal of Science, Technology and Environment Informatics 08(01), (2019): 574-582.
APA
Zakaria, A. F. M. and Majumder, N. M. (2019). Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation. Journal of Science, Technology and Environment Informatics, 08(01), 574-582.
Chicago
Zakaria, A. F. M., Majumder, N. M. “Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation”. Journal of Science, Technology and Environment Informatics 08(01), (2019) 574-582.
Harvard
Zakaria, A. F. M. and Majumder, N. M. 2019. Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation. Journal of Science, Technology and Environment Informatics, 08(01), pp. 574-582.
Vancouver
Zakaria, AFM and Majumder, NM. Are Khasis of Bangladesh Eco-Friendly Agro Manager? Reflections on Hill Farming Practices and Forest Conservation. Journal of Science, Technology and Environment Informatics. 2019 October 08(01), 574-582.
Article Type: Research Article | No. 60, 2020 | Country: India | pp. 583-594 | Open Access
Title: Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies
Authors: Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E.
DOI: http://dx.doi.org/10.18801/jstei.080120.60
Title: Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies
Authors: Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E.
DOI: http://dx.doi.org/10.18801/jstei.080120.60
Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies
Abstract
River basin analysis is highly useful to understand the hydrological dynamics with concerning the topography. The morphometric properties of a drainage basin will help in describing the quantitative attributes of the landscape. A digital representation of topography enables the computation of more complex morphometric parameters with automated refinement. Digital Elevation Models (DEM) represents the topography of Earth in the form of digital imagery. In this article DEM has been used to compute the linear aspects and areal aspects of the Brahmaputra basin falling in the Indian sub-continent. Linear aspects which include stream characteristics like stream order, stream length, mean stream length ratio, bifurcation ratio have been reported thought this article. The areal aspects of river basin like drainage density, stream frequency, form factor, and circulatory ratio have been investigated and these parameters have been used to analyse the river basin characteristics. Geospatial data and technologies prove to be very efficient in analysing the basin’s behaviour.
Key Words: Brahmaputra river, Digital elevation model, Drainage characteristics, Morphometry
Abstract
River basin analysis is highly useful to understand the hydrological dynamics with concerning the topography. The morphometric properties of a drainage basin will help in describing the quantitative attributes of the landscape. A digital representation of topography enables the computation of more complex morphometric parameters with automated refinement. Digital Elevation Models (DEM) represents the topography of Earth in the form of digital imagery. In this article DEM has been used to compute the linear aspects and areal aspects of the Brahmaputra basin falling in the Indian sub-continent. Linear aspects which include stream characteristics like stream order, stream length, mean stream length ratio, bifurcation ratio have been reported thought this article. The areal aspects of river basin like drainage density, stream frequency, form factor, and circulatory ratio have been investigated and these parameters have been used to analyse the river basin characteristics. Geospatial data and technologies prove to be very efficient in analysing the basin’s behaviour.
Key Words: Brahmaputra river, Digital elevation model, Drainage characteristics, Morphometry
HOW TO CITE THIS ARTICLE
MLA
Pondari et al. “Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies.” Journal of Science, Technology and Environment Informatics 08(01) (2020): 583-594.
APA
Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E. (2020). Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies. Journal of Science, Technology and Environment Informatics, 08(01), 583-594.
Chicago
Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E. “Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies.” Journal of Science, Technology and Environment Informatics 08(01) (2020): 583-594.
Harvard
Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E. 2020. Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies. Journal of Science, Technology and Environment Informatics, 08(01), pp. 583-594.
Vancouver
Pondari S, Dandabathula G, Bera AK, Nagamani PV and Amminedu E. Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies. Journal of Science, Technology and Environment Informatics. 2020 January 08(01): 583-594.
MLA
Pondari et al. “Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies.” Journal of Science, Technology and Environment Informatics 08(01) (2020): 583-594.
APA
Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E. (2020). Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies. Journal of Science, Technology and Environment Informatics, 08(01), 583-594.
Chicago
Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E. “Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies.” Journal of Science, Technology and Environment Informatics 08(01) (2020): 583-594.
Harvard
Pondari, S., Dandabathula, G., Bera A. K., Nagamani P. V. and Amminedu, E. 2020. Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies. Journal of Science, Technology and Environment Informatics, 08(01), pp. 583-594.
Vancouver
Pondari S, Dandabathula G, Bera AK, Nagamani PV and Amminedu E. Characterization of drainage network of Brahmaputra river basin in Indian sub-continent using geospatial technologies. Journal of Science, Technology and Environment Informatics. 2020 January 08(01): 583-594.
Volume 08 - Issue 02 | Year of Publication: 2020
Article Type: Research Article | No. 61, 2020 | Country: Bangladesh | pp. 595-605 | Open Access
Title: Modification of Boom for a Lever Operated Knapsack Sprayer
Authors: Muhammad Ashik-E-Rabbani, Md. Samiul Basir, Sazzad Mahmud Rifat and Nur-E-Jannat Mona
DOI: http://dx.doi.org/10.18801/jstei.080220.61
Title: Modification of Boom for a Lever Operated Knapsack Sprayer
Authors: Muhammad Ashik-E-Rabbani, Md. Samiul Basir, Sazzad Mahmud Rifat and Nur-E-Jannat Mona
DOI: http://dx.doi.org/10.18801/jstei.080220.61
Modification of Boom for a Lever Operated Knapsack Sprayer
Abstract
Most of the developing countries apply pesticides using a lever operated knapsack (LOK) sprayer. In this method, operator swings the lance in front of his movement. Therefore, it is impossible to maintain a constant nozzle height that produced an uneven spraying. In addition, operator contaminated himself. To overcome this problem, a project was undertaken to design and develop a boom for LOK (Lever Operated Sprayer) sprayer. The development and experiment were done in Department of Farm Power and Machinery workshop at Bangladesh Agricultural University. The boom and frame were fabricated and its performance was tested as the research work. Forward speed of the operator while spraying was recorded as 2.015 km/hr. The effective field capacity of the boom sprayer was found as 0.145 ha/hr. This research observed that field efficiency was 71.86%. The fabrication cost of the boom sprayer was found to be 2310 tk. It was also found that the spraying service charge if estimated 700 Tk/ha, including a profit of 342 Tk/ha, the spraying operation using the machine to cover more than 2.53 ha per year will be profitable.
Key Words: Boom design, Economic use, Fabrication cost, Modified knapsack sprayer, Optimum spraying height.
Abstract
Most of the developing countries apply pesticides using a lever operated knapsack (LOK) sprayer. In this method, operator swings the lance in front of his movement. Therefore, it is impossible to maintain a constant nozzle height that produced an uneven spraying. In addition, operator contaminated himself. To overcome this problem, a project was undertaken to design and develop a boom for LOK (Lever Operated Sprayer) sprayer. The development and experiment were done in Department of Farm Power and Machinery workshop at Bangladesh Agricultural University. The boom and frame were fabricated and its performance was tested as the research work. Forward speed of the operator while spraying was recorded as 2.015 km/hr. The effective field capacity of the boom sprayer was found as 0.145 ha/hr. This research observed that field efficiency was 71.86%. The fabrication cost of the boom sprayer was found to be 2310 tk. It was also found that the spraying service charge if estimated 700 Tk/ha, including a profit of 342 Tk/ha, the spraying operation using the machine to cover more than 2.53 ha per year will be profitable.
Key Words: Boom design, Economic use, Fabrication cost, Modified knapsack sprayer, Optimum spraying height.
HOW TO CITE THIS ARTICLE
MLA
Rabbani, et al. “Modification of Boom for a Lever Operated Knapsack Sprayer”. Journal of Science, Technology and Environment Informatics 08(02) (2020):595-605.
APA
Rabbani, M. A., Basir, M. S., Rifat, S. M. and Mona, N. (2020). Modification of Boom for a Lever Operated Knapsack Sprayer. Journal of Science, Technology and Environment Informatics, 08(02), 595-605.
Chicago
Rabbani, M. A., Basir, M. S., Rifat, S. M. and Mona, N.. “Modification of Boom for a Lever Operated Knapsack Sprayer”. Journal of Science, Technology and Environment Informatics 08(02) (2020):595-605.
Harvard
Rabbani, M. A., Basir, M. S., Rifat, S. M. and Mona, N. 2020. Modification of Boom for a Lever Operated Knapsack Sprayer. Journal of Science, Technology and Environment Informatics, 08(02), pp. 595-605.
Vancouver
Rabbani MA, Basir MS, Rifat SM, Mona N. Modification of Boom for a Lever Operated Knapsack Sprayer. Journal of Science, Technology and Environment Informatics. 2020 January 08(02):595-605.
MLA
Rabbani, et al. “Modification of Boom for a Lever Operated Knapsack Sprayer”. Journal of Science, Technology and Environment Informatics 08(02) (2020):595-605.
APA
Rabbani, M. A., Basir, M. S., Rifat, S. M. and Mona, N. (2020). Modification of Boom for a Lever Operated Knapsack Sprayer. Journal of Science, Technology and Environment Informatics, 08(02), 595-605.
Chicago
Rabbani, M. A., Basir, M. S., Rifat, S. M. and Mona, N.. “Modification of Boom for a Lever Operated Knapsack Sprayer”. Journal of Science, Technology and Environment Informatics 08(02) (2020):595-605.
Harvard
Rabbani, M. A., Basir, M. S., Rifat, S. M. and Mona, N. 2020. Modification of Boom for a Lever Operated Knapsack Sprayer. Journal of Science, Technology and Environment Informatics, 08(02), pp. 595-605.
Vancouver
Rabbani MA, Basir MS, Rifat SM, Mona N. Modification of Boom for a Lever Operated Knapsack Sprayer. Journal of Science, Technology and Environment Informatics. 2020 January 08(02):595-605.
Article Type: Research Article | No. 62, 2020 | Country: Bangladesh | pp.606-617 | Open Access
Title: Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae
Authors: Md. Junayed, Tahmina Akter and Saadia Ahmad
DOI: http://dx.doi.org/10.18801/jstei.080220.62
Title: Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae
Authors: Md. Junayed, Tahmina Akter and Saadia Ahmad
DOI: http://dx.doi.org/10.18801/jstei.080220.62
Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae
Abstract
The study was conducted to assess the effect of fresh leaf extracts of twelve native medicinal plants against the late 3rd instar larvae of Culex quinquefasciatus Say (Diptera: Culicidae), under laboratory condition with five different concentrations (5%, 2.5%, 1.25%, 0.625% and 0.3125%). Observational periods were 0 hours to 72 hours. The test plants were Lawsonia inermis, Passiflora foetida, Stephania japonica, Solanum nigrum, Clerodendrum inerme, Clerodendrum viscosum, Datura metel, Ipomoea fistulosa, Momordica charantea, Saraca indica, Tragia involucrata, and Tinospora cordifolia. After 0-24 hours of exposure, it was observed that 5% concentrated fresh leaf extract of Lawsonia inermis and Stephania japonica was most toxic, both of them killed 100% larvae. Passiflora foetida and Solanum nigrum was also toxic killing 95% and 90% larvae respectively after 0-24 hours of exposure. Fresh leaf extracts of Ipomoea fistulosa, Clerodendrum inerme and Clerodendrum viscosum killed 70%, 50% and 45% larvae. The mortality data were subjected to log probit regression analysis to determine the lethal concentrations (LC50, LC90 andLC95). Among all the test plants minimum LC50 value was observed in Solanum nigrum (0.350) followed by Lawsonia inermis (1.403), Stephania japonica (1.406) and Passiflora foetida (1.587) after 0-24 hours of exposure. Lowest LC90 and LC95 values were shown in Lawsonia inermis (2.484) and (3.47). The present study demonstrates that, the leaf extracts of Solanum nigrum, Lawsonia inermis, Stephania japonica and Passiflora foetida have the potential to be used as larvicide against the larvae of Culex quinquefasciatus, is an ideal eco-friendly approach.
Key Words: Larvicidal activity, leaf extract, Culex quinquefasciatus, Medicinal plants, Mosquito
Abstract
The study was conducted to assess the effect of fresh leaf extracts of twelve native medicinal plants against the late 3rd instar larvae of Culex quinquefasciatus Say (Diptera: Culicidae), under laboratory condition with five different concentrations (5%, 2.5%, 1.25%, 0.625% and 0.3125%). Observational periods were 0 hours to 72 hours. The test plants were Lawsonia inermis, Passiflora foetida, Stephania japonica, Solanum nigrum, Clerodendrum inerme, Clerodendrum viscosum, Datura metel, Ipomoea fistulosa, Momordica charantea, Saraca indica, Tragia involucrata, and Tinospora cordifolia. After 0-24 hours of exposure, it was observed that 5% concentrated fresh leaf extract of Lawsonia inermis and Stephania japonica was most toxic, both of them killed 100% larvae. Passiflora foetida and Solanum nigrum was also toxic killing 95% and 90% larvae respectively after 0-24 hours of exposure. Fresh leaf extracts of Ipomoea fistulosa, Clerodendrum inerme and Clerodendrum viscosum killed 70%, 50% and 45% larvae. The mortality data were subjected to log probit regression analysis to determine the lethal concentrations (LC50, LC90 andLC95). Among all the test plants minimum LC50 value was observed in Solanum nigrum (0.350) followed by Lawsonia inermis (1.403), Stephania japonica (1.406) and Passiflora foetida (1.587) after 0-24 hours of exposure. Lowest LC90 and LC95 values were shown in Lawsonia inermis (2.484) and (3.47). The present study demonstrates that, the leaf extracts of Solanum nigrum, Lawsonia inermis, Stephania japonica and Passiflora foetida have the potential to be used as larvicide against the larvae of Culex quinquefasciatus, is an ideal eco-friendly approach.
Key Words: Larvicidal activity, leaf extract, Culex quinquefasciatus, Medicinal plants, Mosquito
HOW TO CITE THIS ARTICLE
MLA
Junayed, M. et al. “Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae”. Journal of Science, Technology and Environment Informatics 08(02) (2020): 606-617.
APA
Junayed, M., Akter, T. and Ahmad, S. (2020). Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae. Journal of Science, Technology and Environment Informatics, 08(02), 606-617.
Chicago
Junayed, M., Akter, T. and Ahmad, S. “Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae”. Journal of Science, Technology and Environment Informatics 08(02) (2020), 606-617.
Harvard
Junayed, M., Akter, T. and Ahmad, S. 2020. Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae. Journal of Science, Technology and Environment Informatics 08(02), pp. 606-617
Vancouver
Junayed M, Akter T, Ahmad, S. Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae. Journal of Science, Technology and Environment Informatics. 2020 March 08(02) (2020): 606-617.
MLA
Junayed, M. et al. “Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae”. Journal of Science, Technology and Environment Informatics 08(02) (2020): 606-617.
APA
Junayed, M., Akter, T. and Ahmad, S. (2020). Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae. Journal of Science, Technology and Environment Informatics, 08(02), 606-617.
Chicago
Junayed, M., Akter, T. and Ahmad, S. “Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae”. Journal of Science, Technology and Environment Informatics 08(02) (2020), 606-617.
Harvard
Junayed, M., Akter, T. and Ahmad, S. 2020. Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae. Journal of Science, Technology and Environment Informatics 08(02), pp. 606-617
Vancouver
Junayed M, Akter T, Ahmad, S. Fresh leaf extract’s efficacy of twelve medicinal plants against Culex quinquefasciatus mosquito larvae. Journal of Science, Technology and Environment Informatics. 2020 March 08(02) (2020): 606-617.