Annals of Bangladesh Agriculture最新文献

{"title":"Thirty-Year Spatiotemporal Change Record of Sundarban Mangrove Forest in Bangladesh","authors":"Kmm Uzzaman, M. Miah, HM Abdullah, M.R. Islam, M. Afrad, Mj Hossain","doi":"10.3329/aba.v24i2.55781","DOIUrl":"https://doi.org/10.3329/aba.v24i2.55781","url":null,"abstract":"Accurate and realistic forest cover change assessment is essential for the conservation and management of the Sundarban mangrove forest of Bangladesh. With these views, an integrated way of the vegetation cover assessment was conducted using time-series Landsat satellite imageries of 1991, 2001, 2011, and 2021. During the last 30-year (1991-2021), variations in four land cover classes viz. healthy vegetation, unhealthy vegetation, water body, and sandbar were recorded. It showed a decreasing trend of forest vegetation and a subsequent increase of water bodies during the study period. The healthy vegetation and unhealthy vegetation decreased at 1.33 and 1.66%, respectively, whereas water bodies increased 2.55% at the same time. The healthy vegetation consistently decreased over the decades, but unhealthy vegetation decreased during the 2001-2011 period. Conversion from healthy vegetation to unhealthy vegetation and unhealthy vegetation to healthy vegetation during 1991-2001 was similar. Such transform was much higher from unhealthy to healthy vegetation during 2001-2011. Transformation of healthy vegetation to unhealthy vegetation was remarkably higher during the 2011-2021 period. Further continuous change detection and classification algorithm (CCDC) showed a stable pattern over the study period without significant breakpoints. This study reveals the need for regular mangrove forest monitoring. The findings of this study can be used as a reference in the formulation and implementation of sustainable mangrove forest conservation and management.\u0000Ann. Bangladesh Agric. (2020) 24(2): 15-32","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"265 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123020648","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}

{"title":"Evaluation of Growth and Yield of Sweet Pepper (Capsicum annuum) Varieties under Net Protected Conditions","authors":"M. Islam, A. Akter, MZ Akhi, B. Debnath","doi":"10.3329/aba.v24i2.55786","DOIUrl":"https://doi.org/10.3329/aba.v24i2.55786","url":null,"abstract":"An experiment was conducted at the experimental field of Horticulture Department, Sylhet Agricultural University, Bangladesh during winter season of 2013-2014 to evaluate growth and yield of sweet pepper varieties under net protected condition. The two-factor experiment was laid out in Randomized Complete Block Design with three replications. Three popular sweet pepper varieties viz. BARI Mistimorich-1, California Wonder and Yolo Wonder were grown under three protected systems viz. fine net (120 mesh), coarse net (40 mesh) and open field. Considering the effect of varieties, the highest value for all the parameters viz. fruit length (10.01 cm), fruit diameter (5.90 cm), number of fruits/plant (13.61), fruit yield per plant (0.77 kg), fruit yield (21.31 t/ha) were found in California Wonder followed by BARI Mistimorich-1 and Yolo Wonder. Again, considering the effect of net protection system, maximum values for parameters viz. early flowering, fruit length (10.58 cm), fruit diameter (6.29 cm), number of fruits/ plant (16.14), fruit yield/plant (0.94 kg) and per hectare (26.86 t/ha) were recorded under fine net protection system. Under fine net covering plants produced better quality fruit than open field condition. The earliest flowering (60.67 days), the highest number of fruits per plant (19.18) and the maximum fruit yield (35.71 t/ha) were observed in BARI Mistimorich-1grown under fine net system followed by California Wonder grown under coarse net protected system. Benefit cost ratio (BCR) for fine net (5.28) and coarse net (6.75) protected system were much higher than that of open field (1.64) condition indicating bright future for sweet pepper cultivation under net protected system.\u0000Ann. Bangladesh Agric. (2020) 24(2) : 85-94","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121165604","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}

{"title":"Effect of Native Trichoderma asperellum Isolate on Phosphate Solubilization and Growth of Pea","authors":"S. Islam, M. Chowdhury, NJ Mishu","doi":"10.3329/aba.v24i2.55789","DOIUrl":"https://doi.org/10.3329/aba.v24i2.55789","url":null,"abstract":"Application of phosphorus solubilizing microbes is a promising tool for enhancing P uptake in plant. The aim of this study was to evaluate the phosphate solubilization potential and growth promotion of pea (Pisum sativum L.) by native Trichoderma asperellum isolate G3. Phosphate solubilization by T. asperellum strain was assessed in National Botanical Research Institute’s Phosphate (NBRIP) broth medium. Pea plants were inoculated by Trichoderma strain and grown in pot in phosphate deficit condition. The fungal strain was able to solubilize phosphate (from 188.95±2.04 to 262.50±3.80 mgL-1) in broth at different time periods and decreased solution pH. The Trichoderma inoculated pea plant increased the root growth, shoot growth, leaf number, shoot biomass, root biomass, total dry weight, chlorophyll a, chlorophyll b and carotenoid by 23.9%, 33.3%, 33%, 37.1%, 32.7%, 28.4%, 24.5%, 17.4% and 14.7% respectively over control after 5 weeks of post inoculation. The results showed that the native T. asperellum isolate G3 has great potential in the phosphorus solubilization.\u0000Ann. Bangladesh Agric. (2020) 24(2) : 121-124","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"394 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115993204","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}

{"title":"Inhibitory Effect of Trichoderma asperellum Isolate against Ralstonia solanacearum Causing Brinjal Wilt","authors":"S. Islam, S. Siddique, M. Chowdhury, NJ Mishu","doi":"10.3329/aba.v24i2.55788","DOIUrl":"https://doi.org/10.3329/aba.v24i2.55788","url":null,"abstract":"A native Trichoderma isolate was collected from the agricultural soil of Gazipur. This isolate was identified as a Trichoderma asperellum through morphology and analysis of internal transcribed spacer (ITS) region of ribosomal RNA gene sequence and reconstruction of the phylogenetic tree. The antagonistic effects of the newly identified T. asperellum isolate were assessed against brinjal bacterial wilt caused by Ralstonia solanacearum both in vitro and in planta. Both qualitative and quantitative bioassays were conducted in vitro. For qualitative tests, dual culture and antibacterial activity were carried out, and pathogen growth was observed visually. The antagonism of T. asperellum cell free culture filtrate on the growth of R. solanacearum was conducted in a quantitative test. Successful antagonism was recorded after both in vitro qualitative tests. In addition, the lowest colony forming unit was recorded in 100% of CFC (2.4±0.51 ×103 cfu/ml) in quantitative test. The T. asperellum inoculated plant showed low disease incidence (13.33%) when seedlings were challenged with R. solanacearum in planta experiment. Disease incidence was 100% for seedlings when treated with only R. solanacearum. The results showed that the isolated and identified T. asperellum isolate suppressed R. solanacearum growth in vitro and protected the seedling from wilting in planta. Therefore, this isolate could be considered as a potential isolate.\u0000Ann. Bangladesh Agric. (2020) 24(2) : 107-120","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114943001","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}

{"title":"Determining Planting Window for Growing Upland Cotton (Gossypium Hirsutum L.) During Dry Season in Bandarban, Bangladesh","authors":"A. Hamid, M. G. Neogi, J. Biswas, A. Marma, Abdul Mannan Mollah, F. Uddin, Mahabubul Islam","doi":"10.21203/rs.3.rs-91427/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-91427/v1","url":null,"abstract":"\u0000 BackgroundFarmers in the Chattogram Hill Tracts, Bangladesh have been growing cotton (Gossypium hirsutum L.) in their traditional system of jhum cultivation which is undergoing transformation. Growing rainfed cotton as a mono crop in the uplands is constrained by farmers’ socio-economic conditions and erratic rainfall. Shifting growing season to post-monsoon dry months could be an option to sustain cotton production in hilly areas. We conducted an exploratory single variate type experiment for two seasons to explore the possibility of growing cotton in valley lands in Bandarban during dry season. Growth and yield potentials of dry season cotton were evaluated in terms of prevailing environmental conditions.ResultsNight temperature dropped to 9oC on several occasions in 2018-19 season; but it remained higher than 11oC throughout the season in 2019-20 season. In 2018-19, day temperatures surged higher past March 15 occasionally exceeding 38oC. Variability in temperatures was more in 2018-19 while average temperatures were higher in2019-20 season. Rainfall distribution was almost similar in both the growing seasons receiving total rainfall of 757 mm and 579 mm in two seasons, respectively. Higher seed cotton yield (2,047 kg per ha) was recorded for 15 November planted crop compared with 1 December planted crop (1,186 kg per ha). December 1 planted crop was affected more by low temperatures at seedling stage resulting in poor growth and fewer bolls per plant. Late planted crop was more vulnerable to rain damage at boll opening stage. Crops of both the seasons encountered high temperatures (>32oC) during boll development. ConclusionChanging climate, shorter winter season and rising temperatures may allow cotton production in valley lands shifting growing season from rainy season to post-monsoon dry months. However, the window of dry season cotton growing in Bandarban, Bangladesh seems narrow. Rainfall pattern restricts planting seeds prior to mid-November. Again, high temperatures stress in March and April synchronizing boll development, and rainfall toward late April and May during boll opening may cause rain-damage leading to yield loss. Development and adoption of short duration, low temperature tolerant upland cotton varieties might be of advantage for adapting to climate change vulnerabilities.","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134516622","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}

{"title":"Phenotypic Characterization of Zinc and Iron Rich Cytoplasmic Male Sterile Lines of Rice","authors":"S. Mashiat, N. Ivy, M. Rasul, M. Haque, M. Raihan","doi":"10.3329/aba.v23i2.50059","DOIUrl":"https://doi.org/10.3329/aba.v23i2.50059","url":null,"abstract":"A total of 23 cytoplasmic male sterile (A) lines with their corresponding maintainer (B) lines of rice were used for the experiment. The experiment was carried out in completely randomized block design with two replications in the experimental field of the Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during Aman season 2017. A total of 13 characters were studied. BRRI 1A, IR 62 A and IR 68888 A had shown both the earliness and dwarfness character. The higher yield per plant was obtained from Gan 46 A, Straw A, Sugundhi dhan 2A, IR 68888 A and BRRI 1A. Zinc and Iron content of phenotypically best performed rice genotypes were determined in brown condition by using X-Ray Fluorescence technique (XRF). Small differences between Genotypic and Phenotypic coefficient of variation were recorded for all the characters studied which indicated less influence of environment in expression of the characters. Correlation study revealed that selection based on weight of filled grain per panicle, thousand grain weight and number of grains per panicle would be effective for increasing grain yield per plant. Path co-efficient study showed that direct selection based on weight of filled grain per panicle and number of effective tiller per plant would be indicator for yield improvement. Considering yield and studied characters IR 58 A, IR 62 A, IR 68888 A, Gan 46 A and BRRI 1A could be used as cytoplasmic male sterile line which is enriched with zinc and iron. \u0000Ann. Bangladesh Agric. (2019) 23(2) : 105-114","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115799921","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}

{"title":"Agriculture in the Fourth Industrial Revolution","authors":"T. Ané, S. Yasmin","doi":"10.3329/aba.v23i2.50060","DOIUrl":"https://doi.org/10.3329/aba.v23i2.50060","url":null,"abstract":"Agriculture and industry are tied up and both are complementary to each other. The fourth industrial revolution is an advanced digital technology, it focuses an opportunity that could change the environment in the way human think and work. The farms and factories must implement smart technology to move very fast and it should be an innovative applications to embrace the fourth industrial revolution robustly for Bangladesh. The fourth industrial revolution concept combines artificial intelligence and big data that have achieved significant attention and popularity in precision farming like in monitoring, diagnosing insect pests, measuring soil moisture, diagnosing harvest time and monitoring crop health status and reducing complicated monitoring by human. Industry that extend precision agriculture using artificial intelligence with robotic technology in fourth industrial revolution and its application is embedding into smart observation that retrieve real-time information from field level data with minor human interference. The fourth industrial revolution builds a smart farming technology which brings advanced and sustainable changes for both production and agroprocessing. The fourth industrial revolution extends farms production and also increase their value. This paper reviewed the past effects of industrial revolution, discussed expanded benefit into smart farming and predicted impacts of fourth industrial revolution in Bangladesh agriculture. \u0000Ann. Bangladesh Agric. (2019) 23(2) : 115-122","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123031677","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}

{"title":"Pathology of Fowl Typhoid and Molecular Detection of its Pathogen","authors":"J. Hosen, M. Rahman, J. Alam, ZC Das, Mahnaaz Khan, M. Haider","doi":"10.3329/aba.v23i2.50057","DOIUrl":"https://doi.org/10.3329/aba.v23i2.50057","url":null,"abstract":"Salmonellae are important group of pathogens responsible for human and animal diseases. The present study was undertaken with the aim to study pathology of fowl typhoid caused by Salmonella entarica subsp. enteric serovar Gallinarum and to identify Salmonella serovars by polymerase chain reaction (PCR) based molecular method isolated from commercial layer, broiler and sonali chickens of Gazipur district, Bangladesh. A total of 150 cloacal, intestinal and liver swab samples were collected in sterie nutrient and tetrathionate broth from apparently healthy, sick and dead chicken the necropsy. Organ samples were collected in 10% buffered neutral formalin. The collected tissues were fixed, processed, sectioned, stained with hematoxylin and eosin (H&E) and examined at low and high power microscopic fields. Grossly, the liver appeared larger and hemorrhagic with focal necrosis. Catarrhal inflammation on intestinal mucosa was seen. The ova were deformed, discolored and cystic. Microscopically, focal necroses with the infiltration of mononuclear cells were seen with congestion of the central vein. Spleen showed severe depletion of lymphoid cells in white pulp along with reticuloendothelial cell hyperplasia. The section of ovary showed deformed ova with hemorrhages. Samples were subjected to various cultural, biochemical, and molecular examinations and the prevalence was identified 28% cases. Isolated bacteria appeared gram (-)ve, and arranged in short chain. PCR was performed targeting invA gene of Salmonella Gallinarum and amplified 184-bp fragment of the isolates confirmed specific infectivity. \u0000Ann. Bangladesh Agric. (2019) 23(2) : 49-60","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133275592","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}

{"title":"Morphological Characterization and Evaluation of Nineteen Gladiolus Germplasm","authors":"M. Hoque, S. Mahmud","doi":"10.3329/aba.v23i2.50054","DOIUrl":"https://doi.org/10.3329/aba.v23i2.50054","url":null,"abstract":"Nineteen gladiolus germplasms were characterized and evaluated in the Research Field of the Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, during November 2017 to May 2018 for identifying suitable line(s) to release as a variety for commercial cultivation. The accession G8 produced the highest number of shoots (3.3) and effective shoots (3.0) per hill. The accessions that produced flower stalk within 75 days of planting included BARI gladiolus- 3 (G1, 58.7 days), G2 (62.3 days), G3 (65.7 days), BARI gladiolus- 5 (G4, 61.3 days), G5 (55.7 days), BARI gladiolus- 6 (G7, 71.3 days), G10 (74.0 days), G14 (73.3 days), G15 (75.0 days) and G19 (67.3 days). The highest rachis length was recorded in BARI gladiolus- 3 (53.7 cm) which was statistically similar with the rachis length of G6 (46.0 cm), G10 (46.3 cm), G11 (47.0 cm) and BARI gladiolus- 1 (G12, 46.3 cm) but significantly differed with other accessions. Most of the accessions in general, produced more than 10 florets per spike. Vase life of the accessions varied and G11 had the highest vase life of 9-11 days and this was close to 9-10 days in G9 and 8-9 days in BARI gladiolus- 3 (G1), G8, G10, G17, G18 and G19. The highest number of corm per hill was recorded in G8 (10.3) followed by G5 (8.7), G16 (8.3), G17 (7.7) and BARI gladiolus- 3 (6.7). Number of cormels per hill ranged from 9.0-941.7 with an average of 237.0. Based on various plant, flower colour, corm and cormel production characters, the gladiolus accessions G3, G5, G8, G9, G10, G11, G14, G16, G17, G18 and G19 may be considered for further study. \u0000Ann. Bangladesh Agric. (2019) 23(2) : 37-48","PeriodicalId":102006,"journal":{"name":"Annals of Bangladesh Agriculture","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114257872","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}