Pub Date : 2023-06-25DOI: 10.26832/24566632.2023.080209
Dikshya Bist, Kajol Somai, Sushrita Acharya, Prajwal Acharya, Seema Adhikari, U. Tiwari, M. Regmi
The study was carried out at Lamahi-8, Satbariya, Dang to evaluate the effect of different weed management practices on the production of spring maize. The experiment was carried out in a Randomized Complete Block Design using three replications and seven treatments. Rampur hybrid 10 variety and early post emergence (EPoE) herbicide were used in the experiment. The treatment consisted of single as well as combined weed management methods as T1: Broadcasting-One hand weeding, T2: Broadcasting-Herbicide, T3: Line sown- One hand weeding, T4: Line sown-Herbicide + one hand weeding, T5: Line sown- Mini tiller weeder, T6: Line sown- herbicide + mini tiller and T7: Line sown- One hand weeding + mini tiller. The experiment result showed that the combined application of early post emergence herbicide and mini tiller resulted the highest grain yield (8.62 Mt/ha) with minimum total weed density at 60 DAS (41.33/m2) and at harvest (68/m2) thus resulting minimum weed dry weight at 60 DAS (5.45 g/m2) and at harvest (10.64 g/m2). Sixteen different weed species belonging to 9 different families were identified in the experimental field. The highest benefit: cost (3.37) was obtained in the treatment Line sown-Herbicide + mini tiller weeder which was significantly higher compared to other treatments. Among the treatments applied, one with the application of herbicide in combination with mini tiller weeder was found to be the most effective one that resulted in the minimum weed density and minimum dry weight, higher grain and biological yield with the highest benefit cost ratio thus proving to be the most economical one. At the same time, application of mini tiller weeder as a single method was found to be the next better alternative for weed control in spring maize that could benefit the farmers in comparison to other single weed management practices.
为了评价不同杂草管理措施对春玉米生产的影响，本研究在党萨巴利亚的Lamahi-8进行。试验采用随机完全区组设计，3个重复，7个处理。本试验采用Rampur杂交10号品种和出苗期早除草剂。采用单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草、单手除草。试验结果表明，出苗期早期除草剂与迷你分蘖配合施用，籽粒产量最高(8.62 Mt/ha)，杂草总密度最小(60 DAS 41.33/m2)，收获时最小(68/m2)，杂草干重最小(60 DAS 5.45 g/m2)，收获时最小(10.64 g/m2)。在试验田共鉴定出9科16种杂草。单播-除草剂+小型分蘖除草机处理的成本效益最高(3.37)，显著高于其他处理。结果表明，除草剂与微型分蘖除草机配施处理效果最佳，杂草密度最小，干重最小，籽粒和生物产量较高，效益成本比最高，是最经济的处理。与此同时，小型分蘖除草机作为一种单一的除草方法被认为是控制春玉米杂草的下一个更好的选择，与其他单一的杂草管理方法相比，可以使农民受益。
{"title":"Effect of different weed management practices on production of spring maize in Dang, Nepal","authors":"Dikshya Bist, Kajol Somai, Sushrita Acharya, Prajwal Acharya, Seema Adhikari, U. Tiwari, M. Regmi","doi":"10.26832/24566632.2023.080209","DOIUrl":"https://doi.org/10.26832/24566632.2023.080209","url":null,"abstract":"The study was carried out at Lamahi-8, Satbariya, Dang to evaluate the effect of different weed management practices on the production of spring maize. The experiment was carried out in a Randomized Complete Block Design using three replications and seven treatments. Rampur hybrid 10 variety and early post emergence (EPoE) herbicide were used in the experiment. The treatment consisted of single as well as combined weed management methods as T1: Broadcasting-One hand weeding, T2: Broadcasting-Herbicide, T3: Line sown- One hand weeding, T4: Line sown-Herbicide + one hand weeding, T5: Line sown- Mini tiller weeder, T6: Line sown- herbicide + mini tiller and T7: Line sown- One hand weeding + mini tiller. The experiment result showed that the combined application of early post emergence herbicide and mini tiller resulted the highest grain yield (8.62 Mt/ha) with minimum total weed density at 60 DAS (41.33/m2) and at harvest (68/m2) thus resulting minimum weed dry weight at 60 DAS (5.45 g/m2) and at harvest (10.64 g/m2). Sixteen different weed species belonging to 9 different families were identified in the experimental field. The highest benefit: cost (3.37) was obtained in the treatment Line sown-Herbicide + mini tiller weeder which was significantly higher compared to other treatments. Among the treatments applied, one with the application of herbicide in combination with mini tiller weeder was found to be the most effective one that resulted in the minimum weed density and minimum dry weight, higher grain and biological yield with the highest benefit cost ratio thus proving to be the most economical one. At the same time, application of mini tiller weeder as a single method was found to be the next better alternative for weed control in spring maize that could benefit the farmers in comparison to other single weed management practices.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80977643","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 : 2023-06-25DOI: 10.26832/24566632.2023.0802012
Samit Kafle, Sandeep K.C., Beeju Poudyal, S. Devkota
Land Use and Land Cover (LULC) changes are major global environmental issues, affecting ecological systems, climate change, and biodiversity. The Chure region of the Sarlahi district in Nepal is a critical ecological zone that has experienced significant LULC changes in recent years. In this study, our aim was to apply a machine learning approach to detect LULC changes in the Chure region using Google Earth Engine (GEE) and the Random Forest classifier. We utilized Landsat imagery of 2007 and 2022 to generate land cover maps for each year, which were then compared to identify changes over time. The major findings of this study indicate that the forest cover in the region has increased by approximately 16% over the past 15 years, while the agriculture and built-up areas have also shown a significant increase. Conversely, the barren land and water areas have decreased. The classifier obtained an overall accuracy of 85.7% and a kappa coefficient of 81.2% for the year 2022, and an overall accuracy of 82.2% and a kappa coefficient of 76.8% for the year 2007, which demonstrates the high accuracy of the proposed approach. The use of GEE and random forest classifiers provided a cost-effective and efficient method for analysing large datasets and producing accurate LULC maps. Our findings can inform policymakers and conservationists about the need for sustainable land management practices to preserve the ecological integrity of the Chure region. The approach can be applied to other regions to monitor and manage LULC changes and support effective conservation efforts.
{"title":"Machine learning approach to detect Land Use Land Cover (LULC) change in Chure region of Sarlahi district, Nepal","authors":"Samit Kafle, Sandeep K.C., Beeju Poudyal, S. Devkota","doi":"10.26832/24566632.2023.0802012","DOIUrl":"https://doi.org/10.26832/24566632.2023.0802012","url":null,"abstract":"Land Use and Land Cover (LULC) changes are major global environmental issues, affecting ecological systems, climate change, and biodiversity. The Chure region of the Sarlahi district in Nepal is a critical ecological zone that has experienced significant LULC changes in recent years. In this study, our aim was to apply a machine learning approach to detect LULC changes in the Chure region using Google Earth Engine (GEE) and the Random Forest classifier. We utilized Landsat imagery of 2007 and 2022 to generate land cover maps for each year, which were then compared to identify changes over time. The major findings of this study indicate that the forest cover in the region has increased by approximately 16% over the past 15 years, while the agriculture and built-up areas have also shown a significant increase. Conversely, the barren land and water areas have decreased. The classifier obtained an overall accuracy of 85.7% and a kappa coefficient of 81.2% for the year 2022, and an overall accuracy of 82.2% and a kappa coefficient of 76.8% for the year 2007, which demonstrates the high accuracy of the proposed approach. The use of GEE and random forest classifiers provided a cost-effective and efficient method for analysing large datasets and producing accurate LULC maps. Our findings can inform policymakers and conservationists about the need for sustainable land management practices to preserve the ecological integrity of the Chure region. The approach can be applied to other regions to monitor and manage LULC changes and support effective conservation efforts.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90874681","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 : 2023-06-25DOI: 10.26832/24566632.2023.080202
A. Mohamed, Abdullah Abood
The study was aimed to update the knowledge on the fish landings of the inland fisheries in Basrah province, Iraq. The species composition, species and total landings, and their trends in six landing sites throughout the study region were evaluated during the year 2020-2021. Species compositions were included seven cyprinids’ species, three cichlids’ species, three mullet’s species, and two species from sparids and silurids. The exotic species, C. carpio, tilapias species and C. auratus dominated the landings constituting 44.2% of the total catch, whereas the highly valued native species (M. sharpeyi, L. xanthopterus, C. luteus and A. grypus) forming only 12.4% of the total catch. The total landing reached 2,427.78 t in 2020 and 2,365.15 t in 2021, and these values were higher than what was recorded during the past years since the year 2009. This is due to the prevalence of aliened species and the increase in the fishing effort, such as the numbers of fishermen and fishing boats. Therefore, in fisheries management point of view, it is essential to enhance the stocks of the native species, minimize the dispersal and impacts of some exotic species, and activate the national regulating fishing, exploitation and protection of aquatic organisms to improve the inland fisheries.
{"title":"Evaluation of the inland fisheries in Basrah province in Iraq during 2020-2021","authors":"A. Mohamed, Abdullah Abood","doi":"10.26832/24566632.2023.080202","DOIUrl":"https://doi.org/10.26832/24566632.2023.080202","url":null,"abstract":"The study was aimed to update the knowledge on the fish landings of the inland fisheries in Basrah province, Iraq. The species composition, species and total landings, and their trends in six landing sites throughout the study region were evaluated during the year 2020-2021. Species compositions were included seven cyprinids’ species, three cichlids’ species, three mullet’s species, and two species from sparids and silurids. The exotic species, C. carpio, tilapias species and C. auratus dominated the landings constituting 44.2% of the total catch, whereas the highly valued native species (M. sharpeyi, L. xanthopterus, C. luteus and A. grypus) forming only 12.4% of the total catch. The total landing reached 2,427.78 t in 2020 and 2,365.15 t in 2021, and these values were higher than what was recorded during the past years since the year 2009. This is due to the prevalence of aliened species and the increase in the fishing effort, such as the numbers of fishermen and fishing boats. Therefore, in fisheries management point of view, it is essential to enhance the stocks of the native species, minimize the dispersal and impacts of some exotic species, and activate the national regulating fishing, exploitation and protection of aquatic organisms to improve the inland fisheries.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85782821","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 : 2023-06-25DOI: 10.26832/24566632.2023.080205
Muhammad Dan Yaro Magaji, I. Mohammed, I. Jega, A. Musa
Whitefly (Bemisia tabaci Genn.) is known to vectored Cassava mosaic virus (CMV) and Cassava brown streak virus (CBSV), these viruses caused major diseases of cassava in Africa. An experiment was conducted to determine the effect of Wolbachia as biocontrol agent on fecundity and survival of whitefly infesting cassava. Whiteflies infesting cassava were captured and reared using rearing cages. Wolbachia was isolated from infected cassava whiteflies, cultured and used for the inoculations. The experiment was conducted under control conditions using glass cages. Results of this research revealed that number of eggs lay by Bemisia tabaci inoculated with Wolbachia significantly (P = 0.05) reduced weeks after inoculation which significantly differ among the cassava genotypes. Number of eggs lay by B. tabaci free of Wolbachia was significantly higher (964.35) than those inoculated with Wolbachia (46.541) at 4 weeks after inoculation (4WAI). The genotype ‘Dan Aliero’ had the highest number (4WAI 82.33), while, ‘Farin rogo’ had the lowest number of eggs (4WAI 23.33). Number of whitefly nymphs and adults also significantly reduced when B. tabaci was inoculated with Wolbachia. ‘Dan Aliero’ had the highest number of whitefly nymphs and adults (4WAI = 59.00) and (4WAI = 51.00), respectively. ‘Farin rogo’ recorded the lowest number of whitefly nymphs (17.67) and adults (13.00) at 4WAI, respectively. For the first time, Wolbachia were evaluated for whiteflies management. From the finding of this study, Wolbachia can be used as biocontrol agent to suppress whiteflies infestation on cassava and other vegetable crops.
{"title":"Effect of Wolbachia as biocontrol agent on fecundity and survival of cassava whitefly in northwest Nigeria","authors":"Muhammad Dan Yaro Magaji, I. Mohammed, I. Jega, A. Musa","doi":"10.26832/24566632.2023.080205","DOIUrl":"https://doi.org/10.26832/24566632.2023.080205","url":null,"abstract":"Whitefly (Bemisia tabaci Genn.) is known to vectored Cassava mosaic virus (CMV) and Cassava brown streak virus (CBSV), these viruses caused major diseases of cassava in Africa. An experiment was conducted to determine the effect of Wolbachia as biocontrol agent on fecundity and survival of whitefly infesting cassava. Whiteflies infesting cassava were captured and reared using rearing cages. Wolbachia was isolated from infected cassava whiteflies, cultured and used for the inoculations. The experiment was conducted under control conditions using glass cages. Results of this research revealed that number of eggs lay by Bemisia tabaci inoculated with Wolbachia significantly (P = 0.05) reduced weeks after inoculation which significantly differ among the cassava genotypes. Number of eggs lay by B. tabaci free of Wolbachia was significantly higher (964.35) than those inoculated with Wolbachia (46.541) at 4 weeks after inoculation (4WAI). The genotype ‘Dan Aliero’ had the highest number (4WAI 82.33), while, ‘Farin rogo’ had the lowest number of eggs (4WAI 23.33). Number of whitefly nymphs and adults also significantly reduced when B. tabaci was inoculated with Wolbachia. ‘Dan Aliero’ had the highest number of whitefly nymphs and adults (4WAI = 59.00) and (4WAI = 51.00), respectively. ‘Farin rogo’ recorded the lowest number of whitefly nymphs (17.67) and adults (13.00) at 4WAI, respectively. For the first time, Wolbachia were evaluated for whiteflies management. From the finding of this study, Wolbachia can be used as biocontrol agent to suppress whiteflies infestation on cassava and other vegetable crops.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85031666","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 : 2023-06-25DOI: 10.26832/24566632.2023.080206
D. Das, N. Begum, M. Moniruzzaman, E. Karim, Y. Mahmud
A checklist of the native fishes of the Roktodaho beel of Adamdighi and Raninagar Upazila under the Bogura and Naogaon districts of Bangladesh, where data were collected monthly by field survey, focus group discussions, and personal interviews by using a semi-structured questionnaire and a pictorial check list of fish species from a professional fishing boat caught by different nets, traps, and hooks from July 2021 to June 2022. A total of 36 species under 8 orders belonging to 19 families were recorded, of which 29%, 28%, 25%, and 8% were available, seasonal, rare, and very rare, respectively. Among those, 8 fish species (22.22%) were in the threatened category (1 critically endangered, 2 endangered, and 5 vulnerable), according to the IUCN Bangladesh. Notably, the globally threatened Channa orientalis and Wallago attu were available in the study area. According to their place of residence, 24 (66.67%) of the fish were floodplain residents except Glossogobius giuris, which is a mixed residence (reverine, estuarine, and floodplain) species. This residence status of fish indicates that the species have chosen their ideal environment. Dewatering, katha fishing, and the use of unlicensed technology were the main dangers. Creating and maintaining fish sanctuaries, reducing human effects, passing fishing regulations, and increasing consciousness may all help to preserve the current supply of fish. Strategies for restoration must be performed in the Roktodaho beel to preserve the fish range.
{"title":"Freshwater icthyo-faunal checklist of Roktodaho Beel in Bangladesh: Threats and conservation","authors":"D. Das, N. Begum, M. Moniruzzaman, E. Karim, Y. Mahmud","doi":"10.26832/24566632.2023.080206","DOIUrl":"https://doi.org/10.26832/24566632.2023.080206","url":null,"abstract":"A checklist of the native fishes of the Roktodaho beel of Adamdighi and Raninagar Upazila under the Bogura and Naogaon districts of Bangladesh, where data were collected monthly by field survey, focus group discussions, and personal interviews by using a semi-structured questionnaire and a pictorial check list of fish species from a professional fishing boat caught by different nets, traps, and hooks from July 2021 to June 2022. A total of 36 species under 8 orders belonging to 19 families were recorded, of which 29%, 28%, 25%, and 8% were available, seasonal, rare, and very rare, respectively. Among those, 8 fish species (22.22%) were in the threatened category (1 critically endangered, 2 endangered, and 5 vulnerable), according to the IUCN Bangladesh. Notably, the globally threatened Channa orientalis and Wallago attu were available in the study area. According to their place of residence, 24 (66.67%) of the fish were floodplain residents except Glossogobius giuris, which is a mixed residence (reverine, estuarine, and floodplain) species. This residence status of fish indicates that the species have chosen their ideal environment. Dewatering, katha fishing, and the use of unlicensed technology were the main dangers. Creating and maintaining fish sanctuaries, reducing human effects, passing fishing regulations, and increasing consciousness may all help to preserve the current supply of fish. Strategies for restoration must be performed in the Roktodaho beel to preserve the fish range.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84058021","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 : 2023-06-25DOI: 10.26832/24566632.2023.080204
B. Uba, Francisca Nneka Anidu
The evaluation of the heavy metals remediation potential and characterization of biosurfactant produced by Aeromonas hydrophilia strain S62A isolated from water and sediment samples of Imo River, Nigeria was studied. In this study, 12 bacterial isolates were isolated from contaminated water and sediment samples using spread plate technique and primarily screened for biosurfactant production using emulsification index, oil displacement and surface tension tests. Secondary biosurfactant production was carried out in a modified mineral salt medium under optimized conditions for 5 days and the produced biosurfactant was characterized and evaluated for its heavy metals removal efficiencies using standard analytical procedures. The result showed that the bacterial strain identified as Aeromonas hydrophilia S62A out of the 12 isolate strains had the highest and lowest values of 66.66 %, 23.76 cm and 90 mN/m for emulsification index, oil displacement and surface tension tests, respectively. The purified biosurfactant was found to be glycophospholipid as confirmed by the gas chromatographic (GC) and Fourier Transformed Infra-Red Spectroscopic (FTIR) profiles with 5 mg/mL critical micelles concentration (CMC). Statistically, significant differences (P < 0.05) were detected among the means of all surfactant CMC treatment in comparison to their untreated controls with 2 × CMC lead having the highest (98.92 %) and control (water) having the lowest (2.09 %) heavy metals removal efficiencies. Therefore, the present study has produced glycophospholipid biosurfactant with unique structural and chemical features and composition and could be exploited in environmental remediation of heavy metals contaminated ecosystems.
{"title":"Evaluation of the characterization and heavy metals remediation potential of biosurfactant produced by Aeromonas hydrophila S62A","authors":"B. Uba, Francisca Nneka Anidu","doi":"10.26832/24566632.2023.080204","DOIUrl":"https://doi.org/10.26832/24566632.2023.080204","url":null,"abstract":"The evaluation of the heavy metals remediation potential and characterization of biosurfactant produced by Aeromonas hydrophilia strain S62A isolated from water and sediment samples of Imo River, Nigeria was studied. In this study, 12 bacterial isolates were isolated from contaminated water and sediment samples using spread plate technique and primarily screened for biosurfactant production using emulsification index, oil displacement and surface tension tests. Secondary biosurfactant production was carried out in a modified mineral salt medium under optimized conditions for 5 days and the produced biosurfactant was characterized and evaluated for its heavy metals removal efficiencies using standard analytical procedures. The result showed that the bacterial strain identified as Aeromonas hydrophilia S62A out of the 12 isolate strains had the highest and lowest values of 66.66 %, 23.76 cm and 90 mN/m for emulsification index, oil displacement and surface tension tests, respectively. The purified biosurfactant was found to be glycophospholipid as confirmed by the gas chromatographic (GC) and Fourier Transformed Infra-Red Spectroscopic (FTIR) profiles with 5 mg/mL critical micelles concentration (CMC). Statistically, significant differences (P < 0.05) were detected among the means of all surfactant CMC treatment in comparison to their untreated controls with 2 × CMC lead having the highest (98.92 %) and control (water) having the lowest (2.09 %) heavy metals removal efficiencies. Therefore, the present study has produced glycophospholipid biosurfactant with unique structural and chemical features and composition and could be exploited in environmental remediation of heavy metals contaminated ecosystems.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83128863","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 : 2023-06-25DOI: 10.26832/24566632.2023.0802014
Annika Sal Sabil, M. Haque, K. Ahamed, Md. Rakib Hasan, N. Paul, Md. Asif Mahamud
To investigate the performance of aromatic rice (cv. BRRI dhan34) in response to seedling age and nutrient management, an experiment was carried out at the Sher-e-Bangla Agricultural University, Dhaka from July to December 2021. The experiment includes three different ages of seedlings to be transplanted viz., 30, 45 and 60 days old and six nutrient management practice viz. control (no manures and fertilizers), recommended dose of inorganic fertilizers (RDF), 50% of RDF + cow dung @ 5 t ha-1, 75% of RDF + cow dung @ 5 t ha-1, 50% of RDF + poultry manure @ 2.5 t ha-1 and, 75% of RDF + poultry manure @ 2.5 t ha-1. The experiment was laid out in a randomized complete block design with three replications. The results revealed that in the case of transplanting of different aged seedlings, the highest leaf area index (5.74), dry matter hill-1 (32.86 g), number of tillers hill-1 (13.17), number of effective tillers hill-1 (11.53), plant height (113.34 cm), total grains panicle-1 (135.14), 1000-grain weight (12.45 g), grain yield (3.29 t ha-1), straw yield (4.01 t ha-1), biological yield (7.30 t ha-1) and were recorded from transplanting 30 days old seedlings. Different levels of nutrient management showed a significant impact on most of the parameters under study. The highest total dry matter hill-1 (34.02 g), the maximum LAI (5.35), plant height (115.70 cm), chlorophyll content (42.87), number of effective tillers hill-1 (12.99), panicle length (24.63 cm), total grains panicle-1 (140.17), 1000-grain weight (12.54 g), grain yield (3.27 t ha-1), straw yield (4.15 t ha-1), biological yield (7.42 t ha-1) and harvest index (43.03%) were also recorded in F5 (75% of RDF + poultry manure @ 2.5 t ha-1) treatment. While considering the interaction effects between the age of seedlings and nutrient management, transplanting 30 days old seedlings along with the nutrient management of 75% of RDF + poultry manure @ 2.5 t ha-1 treatment improved yield contributing parameters and provided the highest yield (3.76 t ha-1) of BRRI dhan34 compared to other treatment combination. So, the application of 75% of RDF + poultry manure @ 2.5 t ha-1 along with 30 days old seedlings appeared as a promising practice to obtain better performance of fine aromatic rice (cv. BRRI dhan34).
研究芳香稻(cv。针对苗龄和养分管理，于2021年7月至12月在达卡Sher-e-Bangla农业大学开展了一项试验。试验包括30、45和60日龄3个不同的移栽苗，以及6种养分管理措施，即对照(不施肥)、推荐用量的无机肥料(RDF)、50% RDF +牛粪@ 5 t ha-1、75% RDF +牛粪@ 5 t ha-1、50% RDF +禽粪@ 2.5 t ha-1和75% RDF +禽粪@ 2.5 t ha-1。试验采用完全随机区组设计，设3个重复。结果表明:不同龄期秧苗移栽时，叶面积指数最高(5.74)，干物质丘1 (32.86 g)，分蘖数丘1(13.17)，有效分蘖数丘1(11.53)，株高(113.34 cm)，总粒数穗数1(135.14)，千粒重(12.45 g)，籽粒产量(3.29 t ha-1)，秸秆产量(4.01 t ha-1)，生物产量(7.30 t ha-1)。不同水平的营养管理对研究中的大多数参数都有显著影响。F5 (75% RDF +禽粪@ 2.5 t ha-1)处理的总干物质hill-1最高(34.02 g)、最大LAI(5.35)、株高(115.70 cm)、叶绿素含量(42.87)、有效分蘖数hill-1最高(12.99)、穗长(24.63 cm)、总穗数-1(140.17)、千粒重(12.54 g)、籽粒产量(3.27 t ha-1)、秸秆产量(4.15 t ha-1)、生物产量(7.42 t ha-1)和收获指数(43.03%)。在考虑苗龄与养分管理交互作用的情况下，移栽30日龄苗龄，75% RDF +禽粪@ 2.5 t ha-1的养分管理处理提高了BRRI dhan34的产量贡献参数，与其他处理组合相比，BRRI dhan34的产量最高(3.76 t ha-1)。因此，施用75%的RDF + 2.5 t hm -1的禽粪和30天龄的幼苗，可以获得更好的优良芳香稻(cv。BRRI dhan34十分)。
{"title":"Influence of seedling age and integrated nutrient management on growth and yield of aromatic rice (cv. BRRI dhan34)","authors":"Annika Sal Sabil, M. Haque, K. Ahamed, Md. Rakib Hasan, N. Paul, Md. Asif Mahamud","doi":"10.26832/24566632.2023.0802014","DOIUrl":"https://doi.org/10.26832/24566632.2023.0802014","url":null,"abstract":"To investigate the performance of aromatic rice (cv. BRRI dhan34) in response to seedling age and nutrient management, an experiment was carried out at the Sher-e-Bangla Agricultural University, Dhaka from July to December 2021. The experiment includes three different ages of seedlings to be transplanted viz., 30, 45 and 60 days old and six nutrient management practice viz. control (no manures and fertilizers), recommended dose of inorganic fertilizers (RDF), 50% of RDF + cow dung @ 5 t ha-1, 75% of RDF + cow dung @ 5 t ha-1, 50% of RDF + poultry manure @ 2.5 t ha-1 and, 75% of RDF + poultry manure @ 2.5 t ha-1. The experiment was laid out in a randomized complete block design with three replications. The results revealed that in the case of transplanting of different aged seedlings, the highest leaf area index (5.74), dry matter hill-1 (32.86 g), number of tillers hill-1 (13.17), number of effective tillers hill-1 (11.53), plant height (113.34 cm), total grains panicle-1 (135.14), 1000-grain weight (12.45 g), grain yield (3.29 t ha-1), straw yield (4.01 t ha-1), biological yield (7.30 t ha-1) and were recorded from transplanting 30 days old seedlings. Different levels of nutrient management showed a significant impact on most of the parameters under study. The highest total dry matter hill-1 (34.02 g), the maximum LAI (5.35), plant height (115.70 cm), chlorophyll content (42.87), number of effective tillers hill-1 (12.99), panicle length (24.63 cm), total grains panicle-1 (140.17), 1000-grain weight (12.54 g), grain yield (3.27 t ha-1), straw yield (4.15 t ha-1), biological yield (7.42 t ha-1) and harvest index (43.03%) were also recorded in F5 (75% of RDF + poultry manure @ 2.5 t ha-1) treatment. While considering the interaction effects between the age of seedlings and nutrient management, transplanting 30 days old seedlings along with the nutrient management of 75% of RDF + poultry manure @ 2.5 t ha-1 treatment improved yield contributing parameters and provided the highest yield (3.76 t ha-1) of BRRI dhan34 compared to other treatment combination. So, the application of 75% of RDF + poultry manure @ 2.5 t ha-1 along with 30 days old seedlings appeared as a promising practice to obtain better performance of fine aromatic rice (cv. BRRI dhan34).","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83279257","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 : 2023-06-25DOI: 10.26832/24566632.2023.0802019
Anish Shakya, N. Acharya
A study was conducted in two districts of Nepal to determine the factors influencing the knowledge of vegetable farmers regarding pesticide use. The use of pesticides in agriculture is considered necessary but can pose significant risks if handled inadequately or impractically. The study collected data from 136 vegetable growers, with 68 farmers from each district, and also involved 5 agro vets from both districts using random sampling techniques. The findings indicated that only 13.23% of the farmers were found to wear full personal protective equipment (PPE), while 83.08% used partial PPE, and 3.67% applied pesticides without any protective gear. This finding was statistically significant at the 10% level. Among the different types of protective gear, masks were the most commonly used by the farmers. The majority of farmers (62.5%) reported being poisoned during pesticide mixing and spraying, with eye irritation being the most frequently reported symptom. Farm households that underwent training in pesticide usage and vegetable cultivation experienced a statistical enhancement of 20.6% in their knowledge. Moreover, farmers who were educated, had access to extension services, had long experience in pesticide usage, or had a history of poisoning in their farm household witnessed corresponding improvements of 9%, 18%, 2.1%, and 9.3% in their knowledge of pesticide use. The study urges agricultural organizations to implement training, promote literacy, offer extension services, and raise awareness to enhance farmers' knowledge and safety, contributing to sustainable agriculture and farmer well-being.
{"title":"Factors affecting the knowledge of vegetable farmers of Chitwan and Makwanpur district over pesticide use","authors":"Anish Shakya, N. Acharya","doi":"10.26832/24566632.2023.0802019","DOIUrl":"https://doi.org/10.26832/24566632.2023.0802019","url":null,"abstract":"A study was conducted in two districts of Nepal to determine the factors influencing the knowledge of vegetable farmers regarding pesticide use. The use of pesticides in agriculture is considered necessary but can pose significant risks if handled inadequately or impractically. The study collected data from 136 vegetable growers, with 68 farmers from each district, and also involved 5 agro vets from both districts using random sampling techniques. The findings indicated that only 13.23% of the farmers were found to wear full personal protective equipment (PPE), while 83.08% used partial PPE, and 3.67% applied pesticides without any protective gear. This finding was statistically significant at the 10% level. Among the different types of protective gear, masks were the most commonly used by the farmers. The majority of farmers (62.5%) reported being poisoned during pesticide mixing and spraying, with eye irritation being the most frequently reported symptom. Farm households that underwent training in pesticide usage and vegetable cultivation experienced a statistical enhancement of 20.6% in their knowledge. Moreover, farmers who were educated, had access to extension services, had long experience in pesticide usage, or had a history of poisoning in their farm household witnessed corresponding improvements of 9%, 18%, 2.1%, and 9.3% in their knowledge of pesticide use. The study urges agricultural organizations to implement training, promote literacy, offer extension services, and raise awareness to enhance farmers' knowledge and safety, contributing to sustainable agriculture and farmer well-being.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72802493","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 : 2023-06-25DOI: 10.26832/24566632.2023.0802018
Ishak Hosen, S. Moonmoon, A. Hannan, Md Najmol Hoque, S. Islam, Shishir Kanti Talukder, M. Islam, A. Hasan
The aim of this field experiment conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, was to investigate the impact of different seed priming techniques and sowing dates on the yield and quality of wheat. The study aimed to identify the most effective seed priming technique and optimal sowing date to enhance wheat productivity and minimize yield reduction. The experiment employed a split plot design with two factors: seed priming techniques (no priming, hydropriming with distilled water, osmopriming with PEG, and halopriming with CaCl2) and sowing dates (November 20, December 05, and December 20). The trial was conducted from November 2019 to April 2020 at the research field. The study consisted of three replications for each treatment combination. Osmopriming exhibited the most favorable results among all priming techniques, showing significantly higher values for effective tillers hill-1 (3.91), number of grains spike-1 (43.82), number of spikelets spike-1 (16.16), grain yield (3.87 tons hectare-1), biological yield (6.02 t ha-1), and harvest index (39.03%). No priming condition resulted in the highest protein content (12.11%), while osmopriming had the lowest protein content (11.77%). The sowing conducted on November 20 yielded the highest number of effective tillers hill-1 (3.57), number of grains spike-1 (42.49), number of spikelets spike-1 (15.75), grain yield (3.71 t ha-1), biological yield (9.70 t ha-1), and lowest protein content (11.74%). Sowing on December 20 resulted in the highest protein content (12.20%). Based on the study's findings, it can be concluded that the osmopriming technique, combined with sowing on November 20, offers the most promising approach to mitigate the yield reduction of wheat. This combination demonstrated the highest grain yield (4.23 t ha-1) compared to other treatments. Therefore, farmers and agricultural practitioners are recommended to adopt the osmopriming technique with a sowing date of November 20 for optimizing wheat production and enhancing overall crop quality.
在Mymensingh孟加拉国农业大学农学田间实验室进行的这项田间试验的目的是调查不同的灌种技术和播种日期对小麦产量和品质的影响。本研究旨在确定最有效的灌种技术和最佳播期，以提高小麦产量，最大限度地减少减产。试验采用裂区设计，采用两种因素:种子催种技术(无催种、蒸馏水催种、聚乙二醇催种和氯化钙盐催种)和播种日期(11月20日、12月05日和12月20日)。该试验于2019年11月至2020年4月在研究现场进行。该研究包括三个重复，每个治疗组合。在所有灌浆技术中，渗透灌浆效果最好，有效分蘖数(3.91)、穗数(43.82)、穗数(16.16)、产量(3.87 t公顷-1)、生物产量(6.02 t公顷-1)和收获指数(39.03%)均显著高于渗透灌浆。无引物条件下蛋白质含量最高(12.11%)，而渗透引物条件下蛋白质含量最低(11.77%)。11月20日播种的有效分蘖数最高(3.57)，穗数最高(42.49)，穗数最高(15.75)，籽粒产量最高(3.71 t ha-1)，生物产量最低(9.70 t ha-1)，蛋白质含量最低(11.74%)。12月20日播种时蛋白质含量最高(12.20%)。根据研究结果，可以得出结论，渗透技术与11月20日播种相结合，是缓解小麦减产的最有希望的方法。与其他处理相比，该组合籽粒产量最高(4.23 t hm -1)。因此，建议农民和农业从业者采用11月20日播期的渗透技术，优化小麦产量，提高作物整体品质。
{"title":"Seed priming influences on yield and protein content of wheat sown at different time","authors":"Ishak Hosen, S. Moonmoon, A. Hannan, Md Najmol Hoque, S. Islam, Shishir Kanti Talukder, M. Islam, A. Hasan","doi":"10.26832/24566632.2023.0802018","DOIUrl":"https://doi.org/10.26832/24566632.2023.0802018","url":null,"abstract":"The aim of this field experiment conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, was to investigate the impact of different seed priming techniques and sowing dates on the yield and quality of wheat. The study aimed to identify the most effective seed priming technique and optimal sowing date to enhance wheat productivity and minimize yield reduction. The experiment employed a split plot design with two factors: seed priming techniques (no priming, hydropriming with distilled water, osmopriming with PEG, and halopriming with CaCl2) and sowing dates (November 20, December 05, and December 20). The trial was conducted from November 2019 to April 2020 at the research field. The study consisted of three replications for each treatment combination. Osmopriming exhibited the most favorable results among all priming techniques, showing significantly higher values for effective tillers hill-1 (3.91), number of grains spike-1 (43.82), number of spikelets spike-1 (16.16), grain yield (3.87 tons hectare-1), biological yield (6.02 t ha-1), and harvest index (39.03%). No priming condition resulted in the highest protein content (12.11%), while osmopriming had the lowest protein content (11.77%). The sowing conducted on November 20 yielded the highest number of effective tillers hill-1 (3.57), number of grains spike-1 (42.49), number of spikelets spike-1 (15.75), grain yield (3.71 t ha-1), biological yield (9.70 t ha-1), and lowest protein content (11.74%). Sowing on December 20 resulted in the highest protein content (12.20%). Based on the study's findings, it can be concluded that the osmopriming technique, combined with sowing on November 20, offers the most promising approach to mitigate the yield reduction of wheat. This combination demonstrated the highest grain yield (4.23 t ha-1) compared to other treatments. Therefore, farmers and agricultural practitioners are recommended to adopt the osmopriming technique with a sowing date of November 20 for optimizing wheat production and enhancing overall crop quality.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83846581","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}
A field experiment was carried out at Rukumkot, Rukum East, Nepal during the rainy season of 2021 to study the effect of boron and zinc on vegetative growth and yield parameters of the local “Sete” variety of potato. The experiment was laid out in a randomized complete block design (RCBD) with 4 replications, and 7 treatments i.e., control, boron @2kg/ha soil application, zinc @4.5kg/ha soil application, boron @2kg/ha + zinc @4.5kg/ha soil application, 0.1% boron spray, 0.1% zinc spray and 0.1% boron+ 0.1% zinc spray. The highest tuber yield per hill and productivity was reported in boron @2kg/ha + zinc @4.5kg/ha soil application i.e., 2888.52 grams and 27.51 ton/ha, respectively. A similar result was shown by zinc @4.5kg/ha soil application. Plant height (26.33cm, 46.57cm), number of branches (4.85, 12.02) and number of leaves per plant (30.05, 73.70) were significantly high in boron @2kg/ha + zinc @4.5kg/ha soil application at both 45 DAP (days after planting) and 60DAP. Soil application of only boron, only zinc and boron + zinc increased the total yield of tubers by 10.23%, 24.66% and 25.66%, respectively over the control. The foliar application of only boron, only zinc and boron + zinc increased the total yield of tubers by 4.22%, 2.07% and 12.37%, respectively over the control. Hence, research suggested combined soil application of zinc and boron at the rate of 4.5kg/ha and 2kg/ha, respectively over the foliar cum solitary application of micronutrients for increasing number of medium and large sized tubers and get an overall high yield of potato.
在2021年雨季，在尼泊尔东部鲁库姆的鲁库姆科特(Rukumkot)进行了田间试验，研究硼和锌对当地“Sete”品种马铃薯营养生长和产量参数的影响。试验采用随机完全区组设计(RCBD)，设4个重复，7个处理，即对照、施硼2kg/ha、施锌4.5kg/ha、施硼2kg/ha +施锌4.5kg/ha、施硼0.1%、施锌0.1%、施硼0.1% +施锌0.1%。硼2kg/ha +锌4.5kg/ha土壤处理的块茎单产和生产力最高，分别为2888.52 g和27.51 t /ha。施锌量为4.5kg/ hm2，结果与施锌量相近。2kg/ha硼+ 4.5kg/ha锌处理在45和60DAP时株高(26.33cm、46.57cm)、枝数(4.85、12.02)和单株叶数(30.05、73.70)均显著高于其他处理。施用纯硼、纯锌和硼+锌处理的块茎总产量比对照分别提高10.23%、24.66%和25.66%。叶面单施硼、单施锌和硼+锌处理的块茎总产量比对照分别提高4.22%、2.07%和12.37%。因此，研究建议在叶面和单株微量元素施用的基础上，分别以4.5kg/ha和2kg/ha的速度施用锌和硼，以增加中、大型块茎的数量，获得马铃薯的整体高产。
{"title":"Effect of zinc and boron on the performance of rainy season local potato variety “Sete” (Solanum tuberosum L.) at Rukumkot, Rukum East, Nepal","authors":"Dhaniraj Kohar, Akash Gupta, Prem Prasad Siwakoti, Sandeep Gouli, Prajwol Shrestha, Rajan Sah","doi":"10.26832/24566632.2023.0802010","DOIUrl":"https://doi.org/10.26832/24566632.2023.0802010","url":null,"abstract":"A field experiment was carried out at Rukumkot, Rukum East, Nepal during the rainy season of 2021 to study the effect of boron and zinc on vegetative growth and yield parameters of the local “Sete” variety of potato. The experiment was laid out in a randomized complete block design (RCBD) with 4 replications, and 7 treatments i.e., control, boron @2kg/ha soil application, zinc @4.5kg/ha soil application, boron @2kg/ha + zinc @4.5kg/ha soil application, 0.1% boron spray, 0.1% zinc spray and 0.1% boron+ 0.1% zinc spray. The highest tuber yield per hill and productivity was reported in boron @2kg/ha + zinc @4.5kg/ha soil application i.e., 2888.52 grams and 27.51 ton/ha, respectively. A similar result was shown by zinc @4.5kg/ha soil application. Plant height (26.33cm, 46.57cm), number of branches (4.85, 12.02) and number of leaves per plant (30.05, 73.70) were significantly high in boron @2kg/ha + zinc @4.5kg/ha soil application at both 45 DAP (days after planting) and 60DAP. Soil application of only boron, only zinc and boron + zinc increased the total yield of tubers by 10.23%, 24.66% and 25.66%, respectively over the control. The foliar application of only boron, only zinc and boron + zinc increased the total yield of tubers by 4.22%, 2.07% and 12.37%, respectively over the control. Hence, research suggested combined soil application of zinc and boron at the rate of 4.5kg/ha and 2kg/ha, respectively over the foliar cum solitary application of micronutrients for increasing number of medium and large sized tubers and get an overall high yield of potato.","PeriodicalId":8147,"journal":{"name":"Archives of Agriculture and Environmental Science","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86185360","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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