Bangladesh Agronomy Journal最新文献

{"title":"Salt Stress Tolerance and Germination Performance Of Mungbean Genotypes Under Salt Stress","authors":"M. Kobir, Mohamed S. M. Ali, J. Hossain, M. Alam, M. Rahman, K. Ahammad, P. Hajong, S. Paul","doi":"10.3329/baj.v25i1.62832","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62832","url":null,"abstract":"Sea level rising, as a result of global warming, is a major threat to crop production; because inclusion of saline water in crop land limits the crop production. So, an experiment was undertaken to evaluate some mungbean genotypes under different levels of salt stresses in germination stage. The experiment was conducted at Regional Agricultural Research Station, Jashore during Rabi 2020-2021. The seeds of seven mungbean genotypes viz. BARI Mung-6, BARI Mung-8, BMXKI-112004-3, BMXKI- 112009-21, MMAT-V07, BMMP-201524 and BMMP-201506 were collected from different sources. This experiment was conducted following factorial completely randomized design (CRD) with two replications. The experimental factors were i) mungbean genotypes (seven) and ii) salt stress (three levels: 0, 4 and 8 dSm-1). The results showed that mungbean var. BARI Mung-6 at 0 dSm-1 and 4 dSm-1 showed highest value in case of germination index (9), germination percentage (100%), co-efficient of germination (40), vigor index (1950) and lowest value in case of mean germination time (2.5). BARI Mung-8 at 0 dS m-1 showed the inverse results. Genotype BMXKI-112009- 21, MMAT-V07 and BMMP-201524 at 4 dSm-1 and in some extent in 8 dSm-1 showed highest value in case of germination stress tolerance index, plant height stress index, root length stress index, shoot fresh weight stress index, root fresh weight stress index, shoot dry weight stress index and in root dry weight stress index. The lowest values in these parameters were found in BARI Mung-8 at 8 dSm-1 salt stress. BARI Mung-6, MMATV07, BMXKI-112009-21 and BMMP-201524 genotypes were found to be more tolerant to salt stress than rest of the genotypes in germination stage. \u0000Bangladesh Agron. J. 2022, 25(1): 57-65","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45850746","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":"Zinc Priming Triggers Osmoregulation to Enhancing Growth of Soybean (Glycine Max L.) Under Salinity","authors":"F. Nowroz, M. Alam, M. Raihan","doi":"10.3329/baj.v25i1.62831","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62831","url":null,"abstract":"Soil salinity is becoming an alarming issue in crop production and increasing trend with a disastrous effect in near future. An experiment was conducted following completely randomized design to investigate the responses of zinc (Zn) priming (0.5 and 1.0 mM ZnSO4· 7H2O) upon exposure to different salt concentrations (50, 100, and 150 mM NaCl) in mitigating salt-induced damages in soybean (Glycine max L.). Results evidenced that shoot and root length, stem diameter, number of branches, number of leaves, and shoot and root biomass was reduced in a dose-dependent manner compared to control seedling. In a contrary, Zn priming resulted in the improvement of the parameters, particularly at a lower dose of salt. Moreover, leaf reduced relative water content and proline content were revived in primed seed in comparison with non-primed stressed plants. These triggers soybean plants' tolerance to salt stress. It was concluded that priming seeds with lower concentration of Zn (0.5 mM) could alleviate the salt stress through improving plant growth characteristics, relative water content while decreasing proline content. \u0000Bangladesh Agron. J. 2022, 25(1): 47-56","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41666885","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":"Sustainable Soil Management for Nutrition Sensitive Agriculture Through Micronutrient Inclusion In Boro Rice Cultivation","authors":"P. Biswas, S. Samia, S. Shome","doi":"10.3329/baj.v25i1.62852","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62852","url":null,"abstract":"The experiment was conducted in Boro season, 2020-21 to compare the performance of fortified rice variety BRRI dhan84 with non-fortified mega variety BRRI dhan89 and their suitable combinations for maximum growth and yield. Treatments were: two rice variety viz., i) BRRI dhan84 (V1) and ii) BRRI dhan89 (V2) in the main plot and seven different fertilizer management viz., i) No fertilizer (F1), ii) Recommended NPKS (RFD) with Zn as basal (F2), iii) RFD + Zn as foliar at anthesis (F3), iv) RFD + Zn & B as foliar at anthesis (F4), v) 50% RFD + 50% Cowdung as basal (F5), vi) 50% RFD + 50% Cowdung + Zn & B as basal (F6) and vii) 50% RFD + 50% Cowdung as basal + Zn & B as foliar at anthesis (F7) in the sub-plot. The experiment was laid out in a Split-plot design having 3 replications. No significant variations observed between the two varieties for almost all the studied characters except filled grains panicle-1 where the variety BRRI dhan89 showed higher number of grains (116.14) than the other variety. Foliar application of zinc and born (F4) gave the highest plant height (102.54 cm), effective tillers hill-1 (12.83) that similar (13.00) with F2 (recommended NPKS with Zn as basal), panicle length (25.91 cm), 1000-grain weight (23.58 g), grain yield (7.67 t ha-1), biological yield (14.85 t ha-1) and harvest index (51.69%). The interaction of V2F4 and V1F4 resulted superior response for almost all the studied parameters. Foliar application of zinc and boron (F4) along with RFD increased 8.79 and 27.45% yield in BRRI dhan89 compared to that of foliar (F3) and basal (F2) application of zinc, respectively that was 17.11 and 26.77% for the other rice variety BRRI dhan84. \u0000Bangladesh Agron. J. 2022, 25(1): 97-103","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43774371","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 Sowing Date On Fibre Yield And Yield Attributes Of Advanced Breeding Line O-0412-9-4 And O- 043-7-9 Of Tossa Jute (Corchorus Olitorius L.)","authors":"J. Ferdous, M. Hossain, M. Sarker, M. Alim, MM Islam","doi":"10.3329/baj.v25i1.62824","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62824","url":null,"abstract":"The experiment was conducted at Jute Agriculture Experimental Station (JAES), Manikganj and Jute Research Sub Station (JRSS), Jashore during 2019- 2020 to determine the optimum sowing date of advanced breeding line O-0412-9-4, O-043-7-9 of tossa jute and BJRI Tossa Pat 5 (O-795) used as control. The experiment was laid-out in factorial RCBD with three replications. Crops were sown on four different dates viz., 30 March, 15 April, 30 April and 15 May as treatment variables. Plants were harvested at 120 days after sowing. All crops were given normal cultural practices. Results showed that advanced breeding line O-0412-9-4 and O-043-7-9 sown on 30 March to 10 April gave significantly higher fibre yield of 3.11 and 3.04 t ha-1, respectively) at Manikganj and 3.13 and 3.11 t ha-1, respectively at and Jashore. \u0000Bangladesh Agron. J. 2022, 25(1): 1-6","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46501169","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 Planting System on Productivity of Hybrid Maize-Indian Spinach Intercropping System","authors":"A. Begum, M. Rahman, J. Hossain, S. Kakon, Mz Ali, D. Choudhury","doi":"10.3329/baj.v25i1.62849","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62849","url":null,"abstract":"A field experiment was undertaken at Joydebpur, Jashore and Ishurdi Farm of Bangladesh Agricultural Research Institute during Kharif seasons of 2016 and 2017 to find out suitable combination of hybrid maize and Indian spinach as intercropping system for higher productivity and monetary advantage. Treatments included in the experiment were: T1 = Hybrid maize normal row (75 cm × 20 cm ) + 1 row Indian spinach (plant to plant 25 cm), T2 = Hybrid maize paired row (37.5 cm/150 cm × 20 cm) + 1 row Indian spinach (plant to plant  25 cm), T3 = Hybrid maize paired row (37.5 cm/150 cm × 20 cm) + 2 rows Indian spinach (plant to plant 25 cm), T4 = Hybrid maize paired row (37.5 cm/150 cm × 20 cm) + 3 rows Indian spinach (plant to plant 25 cm), T5 = Sole maize (75 cm × 20 cm) and T6 = Sole Indian spinach (40 cm × 25 cm). Grain yield of maize was the maximum in sole crop but it was decreased 1.0 to 12.6% at Joydebpur, 5.2 to 17.1% at Jashore and 13.4 to 22.2% at Ishurdi due to inter specific competition for growth resources among maize and Indian spinach due to intercropping. All intercropping treatments showed better performance than sole maize crop. The highest maize equivalent yield (19.22 and 18.80 t ha-1 at Joydebpur, 13.30 and 11.58 t ha-1 at Jashore and 11.23 and 11.10 t ha-1 at Ishurdi in 2016 and 2017, respectively),  gross margin (Tk. 196300 and Tk. 192000 ha-1 at Joydebpur, Tk. 111130 and Tk. 85330 ha-1 at Jashore and  Tk. 88450 and Tk. 86500 ha-1 at Ishurdi in 2016 and  2017, respectively) and benefit cost ratio (3.13 and 3.07 at Joydebpur, 2.26 and 1.97 at Jashore and 2.11 and 2.08 at Ishurdi in 2016 and 2017, respectively) were observed in hybrid maize paired row + 3 rows Indian spinach intercropping. The highest land equivalent ratio (1.32 and 1.39 at Joydebpur and 1.50 and 1.47 at Jashore in 2016 and 2017, respectively) was also found in the same treatment. On the other hand, at Ishurdi, the highest LER (1.34 and 1.35 in 2016 and 2017, respectively) was observed in MNR + 1 rows ISP treatment followed by MPR + 3 rows ISP treatment. The results revealed that hybrid maize paired row + 3 rows Indian spinach and Hybrid maize normal row + 1 row Indian spinach intercropping might be economically profitable for hybrid maize + Indian spinach intercropping system at Joydebpur, Jashore and Ishurdi. Bangladesh Agron. J. 2022, 25(1): 75-82","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48662696","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 Rice Husk on Arsenic Accumulation In Potato Plant Under Different Levels of Arsenic Treated Soil","authors":"T. Roy, MS Rahman, M. Mostofa, M. Nahid, MG Khatun, M. Razzaque","doi":"10.3329/baj.v25i1.62833","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62833","url":null,"abstract":"A pot experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka during the period from November, 2020 to May, 2021 to find out the effect of rice husk as an bio-adsorbent to decontaminate As toxicity in potato. The experiment consisted of two factors. Factor A: Arsenic levels (4) viz., As0: control (0 mg As kg-1 soil), As1: 20 mg As kg-1 soil, As2: 40 mg As kg-1 soil, and As3: 60 mg As kg-1 soil. Factor B: Rice husk levels (4) viz., R0: control (0 g kg-1 soil), R1: 20 g kg-1 soil, R2: 40 g kg-1 soil and R3: 60 g kg-1 soil. The experiment was laid out in a factorial randomized complete block design with three replications. Results revealed that As and/or rice husk had significant effect on arsenic load in different plant parts of potato t. Arsenic content in potato tuber flesh, peel, haulm and root gradually increased with the increase of its levels. On the contrary, As content in plant parts decreased with increasing rice husk levels. The soil treated with As1R3 exhibited As accumulation in tuber flesh (0.1070 mg kg-1 fresh weight) and peel (0.443 mg kg-1 FW), respectively. As load in different plant parts was in the sequence: root > haulm > tuber peel > tuber flesh. Although, the least As loading in tuber flesh was observed in As1R1, As1R2, As1R3 (range 0.1258-0.1070 mg kg-1 FW) which also showed higher productivity (range 402.67 - 416.67 g plant-1), but the treatment combination of As1R1 may be suitable for safe potato cultivation in lower level As contaminated soil. Therefore, potato growers can grow potato up to 20 mg As kg-1 contaminated soil treated with 20 g rice husk kg1 soil, which contains safe As load than the critical one (0.157 mg As kg-1 FW) for human consumption. So, application of rice husk for potato cultivation may a good option to reduce the arsenic hazards in lower arsenic endemic areas. \u0000Bangladesh Agron. J. 2022, 25(1): 67-73  ","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44339675","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":"Morpho-Physiological Responses of Soybean Varieties to Salinity Stress","authors":"S. Mahfuza, Afms Ahsan, I. Ahmed, F. Ahmed, A. Talukder, M. Islam","doi":"10.3329/baj.v25i1.62826","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62826","url":null,"abstract":"Soybean (Glycine max L. Merr) has a tremendous value in agriculture as a good source of high-quality plant protein and vegetable oils in one hand and nitrogen fixing ability on the other, now a day largely growing in coastal salt marshes areas of Bangladesh. The aim of this study was to evaluate morphological and physiological responses of soybean varieties (Shohag, BARI Soybean-6, BARI Soybean-5 and Binasoybean-4) to pot grown plants in different concentrations of salinity level i.e., control (0.3), 4, 8 and 12 dS m−1 during 2020-21. Irrespective of the variety, with the increase of salinity levels physiological parameters as well as seed yield were greatly affected. Salinity stress decreased total chlorophyll (Chl a+b) and total dry matter (TDM) was reduced due to salinity stress, which ultimately reduced seed yield irrespective of the variety. Sodium (Na+), calcium (Ca2+), potassium (K+) ion content and the potassium sodium ratios (K+: Na+) in leaf tissue were significantly affected by salinity levels. Under salinity stress, BARI Soybean- 6 showed a higher K+: Na+ ratio in leaf, which indicates higher tolerance to salinity compared to others. However, H2O2 and MDA contents was comparatively lower in the respective variety. This variety also showed higher TDM production, filled pods plant-1 and seed yield plant-1 in all salinity levels compared to other varieties. Results revealed that, soybean var. BARI Soybean-6showedmore tolerance against salinity stress compared to other varieties. \u0000Bangladesh Agron. J. 2022, 25(1): 15-22","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43852306","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":"Germination and Growth Performance of Seedlings Of Ascorbic Acid, Silicon and Gibberellic Acid Treated Secondary Seed of Wheat Under Salt Stress","authors":"S. Islam, P. Biswas, A. Amin, M. Fujita, A. Paul, J. Mahmud, M. Hasanuzzaman","doi":"10.3329/baj.v25i1.62854","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62854","url":null,"abstract":"Considering the effect of salt stress on morph-physiological and biochemical changes of wheat (Triticum aestivum L. var. BARI Gom-26) as well as mitigation of the adverse effect through exogenous application of Ascorbic Acid (AsA), Silicon (Si) and Gibberellic Acid (GA3), the experiment was conducted at Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. In the field experiment, four levels of salt stress (0, 50, 80, 120 mM NaCl) were applied at 20 days after sowing and grown up to harvest. AsA (2 mM ascorbic acid), Si (200 μM SiO2), GA3 (100 μM gibberellic acid) were applied as foliar spraying at 20 days interval. Seeds were collected from the field experiment which used as secondary seeds as planting materials for second experiment to evaluate the influence of AsA, Si and GA3 on growth performance and physiological attributes of seedlings under salt stress. Experiment revealed that AsA, Si and GA3 enhanced the germination and growth performance of seedling under salinity stress. Overall, GA3 significantly increased the seed germination (%) and seedling growth parameters, while silicon mostly improved the fresh weight and chlorophyll (a, b and a+b) and AsA showed better relative water contents with other parameters. Considering the results of experiments, GA3 performed better than the AsA and Si in mitigating salt stress. \u0000Bangladesh Agron. J. 2022, 25(1): 115-128","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47034984","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":"Response of Biochar on Growth and Yield of Aman Rice Under Salt Stress","authors":"MM Khanam, N. Nawal, M. Hasanuzzaman, M. Karim, A. Rahman","doi":"10.3329/baj.v25i1.62853","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62853","url":null,"abstract":"A pot experiment was conducted in Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during aman season, 2018 to assess the effect of biochar on rice (BRRI dhan62) under salt stress conditions. The factorial experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Three levels of salinity were used viz. Control (S0), 1600 ppm NaCl (S1), and 2800 ppm NaCl (S2) under factor A and four levels of biochar were applied viz. 0 t ha−1  (B0), 2 t ha−1  (B1), 4 t ha−1  (B2) and 6 t ha−1  (B3) under factor B. The salt materials were added on pot in two installments at 20 and 30 days after transplanting (DAT). Exposure to salinity decreased growth and yield of rice including plant height, tillers hill-1, effective tillers hill-1, grains panicle-1, 1000-grain weight, grain yield and straw yield. The magnitude of growth and yield reduction increased with increasing the salinity level. Exposure of 1600 ppm and 2800 ppm NaCl declined the grain yield of rice by 28 and 100%, respectively. Straw yield (18 and 100%, respectively) and other yield contributing parameters declined by these two levels of salinity in the same way. Application of different levels of biochar ameliorated saltinduced damages to a certain extent. Under 2800 ppm NaCl stress, application of biochar extended life duration of rice plant upto 80 DAT, whereas without biochar application rice plant died after 60 DAT. Upon exposure to 1600 ppm NaCl stress, application of 2, 4 and 6 t ha−1  of biochar increased grain yield by 37, 42 and 30%, respectively, compared with the respective salt treatments (without biochar). Biochar enhanced yield of rice under saline conditions by enhancing yield contributing attributes including effective tillers and 1000-grain weight and by reducing salt-induced damages. However, response of 4 t ha−1  of biochar was best among the biochar levels (2, 4 and 6 t ha−1  of biochar) under both saline and non-saline conditions.\u0000Bangladesh Agron. J. 2022, 25(1): 105-113","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41395107","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":"Farmers’ Rice Yield in Fallow - T. Aman Rice - Fallow Cropping Pattern Due to Variability in Genotype And Management","authors":"N. Parvin, M. Salam, M. Salam, M. Kader, B. Nessa","doi":"10.3329/baj.v25i1.62827","DOIUrl":"https://doi.org/10.3329/baj.v25i1.62827","url":null,"abstract":"Farmers’ existing rice production practices provide key indications of interventions for improving yield in their environments. This study aimed to explore those indications in the Fallow - T. Aman rice - Fallow cropping pattern (CP) under rainfed farming practiced by the farmers in Kapasia, Gazipur. Research method employed one-to-one and face-to face interview of 154 farmers practicing the CP. The average yield of T. Aman was estimated as 3.23 t ha-1, slightly below the national average yield of 3.93 t ha-1, in the range of 1.18 to 5.65 t ha-1. Variety was one of the two broad factors that determined the yield variation. The high yeld potential (HYP) category absolutely preferred the production aim, where Swarna-Ranjit (31.2% by farmer) and BRRI dhan49 (24.7% by farmer) were the dominated varieties where average yields were very close (3.51 and 3.36 t ha-1) for Swarna-Ranjit and BRRI dhan49, respectively). Management was the second factor determining the yield variation within varieties. While both the varieties received similar maximum yield (5.65 t ha-1), Swarna-Ranjit produced the minimum yield of 1.40 t ha-1 and BRRI dhan49 of 1.98 t ha-1. This study did not find a consistent pattern of response of the three measured management components - transplanting time, seedling age and seedling density to yield in either variety. The yield variance of BRRI dhan49 under three management components was higher compared to Swarna-Ranjit. Farmers practiced relatively a wide range of three management combinations to achieve high yield in Swarna-Ranjit, but a narrow range of the three management combinations for BRRI dhan49 to achieve the same level of yield. It is concluded that the variety-specific agronomic management to be the avenue for yield improvements in farmers’ fields.\u0000Bangladesh Agron. J. 2022, 25(1): 23-36  ","PeriodicalId":30957,"journal":{"name":"Bangladesh Agronomy Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44549448","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}