https://www.banglajol.info/index.php/BAJ/issue/feed Bangladesh Agronomy Journal 2020-12-16T13:27:36+00:00 Dr. Parimal Kanti Biswas parimalbiswas@hotmail.com Open Journal Systems <p>Published by Bangladesh Society of Agronomy. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="https://creativecommons.org/licenses/by-nc-nd/4.0/" target="_new">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</p> <p>Bangladesh Agronomy Journal is included in the Directory of Open Access Journals (<a title="DOAJ" href="https://doaj.org/toc/2412-5830" target="_blank" rel="noopener">DOAJ</a>)</p> https://www.banglajol.info/index.php/BAJ/article/view/50112 Improving Performances of Late Transplant Aman Rice Through Spacing and Nutrient Management Options 2020-12-16T13:27:36+00:00 RM Foysal biswajitbrri@gmail.com B Karmakar biswajitbrri@gmail.com MAR Sarkar biswajitbrri@gmail.com AKMH Akther biswajitbrri@gmail.com S Akhter biswajitbrri@gmail.com B Ahmed biswajitbrri@gmail.com <p>Crop and nutrient management options could improve the yield performances of late transplant Aman rice which is generally lower compared to optimum transplanting. To address these issues, an experiment was conducted at Bangladesh Agricultural University, Mymensingh to investigate the effect of spacing and nutrient management options on yield and yield components of late transplant Aman rice and to find out the better treatment combination to obtain higher yield. The experiment was laid out in two factors randomized complete block design (RCBD) with three replications consisting of three spacings viz. S<sub>1</sub> =25 cm×15 cm , S<sub>2</sub> =25 cm×10 cm and S<sub>3</sub> =20 cm×10 cm; and eight nutrient management options viz. N<sub>0</sub> = Control (No fertilizer), N<sub>1</sub> = Poultry manure @ 5 t ha<sup>-1</sup> , N<sub>2</sub> = Vermicompost @ 3 t ha<sup>-1</sup> , N<sub>3</sub> = Researcher’s practice (Urea, TSP, MoP, Gypsum and ZnSO4 @ 180,75,105, 60 and 7.5 kg ha-1, respectively), N<sub>4</sub> = 75% N3 + Poultry manure @ 2.5 t ha<sup>-1</sup>, N<sub>5</sub> = 50% N3+ poultry manure @ 5 t ha<sup>-1</sup>, N<sub>6 </sub>= 75% N<sub>3</sub>+ Vermicompost @ 1.5 t ha<sup>-1</sup> and N<sub>7</sub> = 50% N<sub>3</sub>+ Vermicompost @ 3 t ha<sup>-1</sup>. Pre-germinated seeds of BRRI dhan46 were sown in wet nursery bed on 16 August and 30–d–old seedlings were transplanted as per treatments on 15 September in 2017. Yield and yield components were significantly influenced by spacing, nutrient management options and their interactions. The highest yield (5.20 t ha<sup>-1</sup>) was obtained the spacing 25 cm×10 cm which was at par with 25 cm×15 cm (5.12 t ha<sup>-1</sup>) and the lowest (4.88 t ha<sup>-1</sup>) was in 20 cm×10 cm. Statistically similar grain yield 5.85, 5.81 and 5.79 t ha<sup>-1</sup> were produced in the treatments N<sub>3</sub>, N<sub>4</sub> and N<sub>6</sub>, respectively. Grain yield increased in the treatments having combination of inorganic and organic nutrient, and also in the optimum inorganic fertilizers (researcher’s practice). The highest grain yield (5.98 t ha-1) was obtained in the interaction S<sub>2</sub>×N<sub>3</sub> which was at par with S<sub>1</sub> x N<sub>3</sub>, S<sub>1</sub> x N<sub>4</sub>, S<sub>1</sub> x N<sub>6</sub>, S<sub>2</sub> x N<sub>4</sub> and S<sub>2</sub> x N<sub>6</sub>. Performances of sole organic fertilizers were not satisfactory level. Therefore, reduced amount (75%) of inorganic fertilizers combined with organic fertilizers (poultry manure 2.5 t ha<sup>-1</sup> or vermicompost 1.5 t ha<sup>-1</sup>) along with closer spacing 25 cm×10 cm would be recommended to achieve better and sustainable yield performance of late transplant Aman rice cv. BRRI dhan46.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 1-11</em></p> 2020-11-04T08:24:38+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50113 Performance of Poultry Litter Based Compost on Morpho-Physiological Characters and Yield of T. Aman Rice and Soil Fertility 2020-12-16T13:27:34+00:00 AKMMB Chowdhury minarbari07@gmail.com TS Tudu minarbari07@gmail.com MA Shohag minarbari07@gmail.com MA Hossain minarbari07@gmail.com MZ Islam minarbari07@gmail.com <p>An experiment was carried out at the Research Field of Crop Physiology and Ecology Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur from July to November 2018. The study evaluated the effects of poultry litter based composts on morpho-physiological, yield and yield contributing characters of transplanted aman rice (var.Binadhan-7, BRRI dhan56, BRRI dhan66) and soil fertility. The experiment was laid out in a two factorial complete randomized design (CRD) with three replications. Factor A included three varieties (Binadhan-7: V<sub>1</sub>, BRRI dhan56: V<sub>2</sub>, and BRRI dhan66: V<sub>3</sub>) and factor B comprised of three fertilization levels viz. control (inorganic)-F<sub>1</sub>, poultry litter based compost 20 ton ha-1: F<sub>2</sub>, and 30 ton ha<sup>-1</sup>: F<sub>3</sub>. The performances of plant growth parameters such as plant height, tiller number, leaf number, leaf area, SPAD value, as well as yield and yield contributing parameters, and soil chemical properties were measured. Varieties and fertilizer levels significantly influenced most of the morphophysiological traits and yield and yield contributing characters. The tallest plant was recorded from V<sub>2</sub> variety (BRRI dhan56). The highest leaf number hill-1 (80.89 at 30 DAT) was recorded from V<sub>3</sub> (BRRI dhan66). The highest number of tiller was produced by the interaction of compost F<sub>2</sub> (20 t ha<sup>-1</sup>) with V<sub>1</sub> (Binadhan-7). The highest effective tiller number (13.67) hill-1wasrecorded from F<sub>2</sub> (compost 20 t ha<sup>-1</sup>) with F<sub>1</sub> (Binadhan-7) at maturity. The longest panicle (24.16 cm) was found in F<sub>1</sub>V<sub>1</sub> (inorganic with Binadhan-7) treatment. The highest 1000-grain weight (23.57 g) was recorded from F<sub>3</sub>V<sub>3</sub> treatment (compost-30 t ha<sup>-1</sup> with BRRI dhan66). The maximum harvest index was recorded from F<sub>1</sub> (inorganic) with BRRI dhan66. Soil fertility status increased with higher dose poultry litter based compost (30 t ha<sup>-1</sup>).</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 13-27</em></p> 2020-11-04T08:25:29+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50114 Influence of Phosphorus Levels on Growth and Yield of Four Lentil Varieties 2020-12-16T13:27:32+00:00 RA Sonet smmasum607@yahoo.com MH Ali smmasum607@yahoo.com AKMR Amin smmasum607@yahoo.com MN Haque smmasum607@yahoo.com SM Masum smmasum607@yahoo.com <p>An adequate supply of phosphorus (P) is important for the proper growth and yield of lentil, particularly in poor fertile soil. As such an experiment was carried out to evaluate the effects of phosphorus (P) fertilizer application on growth, yield, and yield components of lentil at the agronomy research field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during 2013-201. Four lentil varieties (BARI Masur-4, BARI Masur-5, BARI Masur-6, and BARI Masur-7) and four levels of P (0, 20, 40 and 60 kg P2O5 ha<sup>-1</sup>) were used in this experiment as treatment variables. Interaction of cultivar and P levels showed a significant influence on all the plant characters studied except plant height and branch production. The highest seed yield (1.98 t ha<sup>-1</sup>) was obtained from the combination of BARI Masur-7 with 40 kg P2O5 ha<sup>-1</sup>, and the lowest (1.08 t ha<sup>-1</sup>) was from BARI Masur-5 with 0 kg P2O5 ha<sup>-1</sup>. Addition of P fertilizer beyond 40 kg ha<sup>-1</sup> decreased seed yield irrespective of varieties. Results revealed that the application of P fertilizer offers a large scope for obtaining a higher yield of lentil in Bangladesh. However, the application of P fertilizer at the rate of 40 kg P2O5 ha<sup>-1</sup> would be the optimum for achieving higher yield irrespective of varieties.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 29-36</em></p> 2020-11-04T08:27:53+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50115 On-Farm Evaluation and System Productivity of Garden Pea-Boro-T. Aman Rice Cropping Pattern in Mymensingh 2020-12-16T13:27:30+00:00 MAH Khan helim1367@gmail.com N Sultana helim1367@gmail.com N Akter helim1367@gmail.com S Akhter helim1367@gmail.com MR Ali helim1367@gmail.com <p>The experiment was conducted at Multi Location Testing site under On-Farm Research Division, Bangladesh Agricultural Research Institute, Mymensingh 2016- 17 and 2017-18 to evaluate the agro-economic performance of improved cropping pattern for increasing cropping intensity, system productivity and profitability as compared to farmers’ existing cropping pattern. The experiment was laid out randomized complete block design with six dispersed replications. Two cropping pattern viz., improved cropping pattern Garden pea (var. BARI Motorshuti-3) - Boro (var. BRRI dhan28) - T. Aman rice (var. BRRI dhan32) and farmers’ existing pattern Fallow - Boro (BRRI dhan28) - T. Aman rice (var. BRRI dhan32) as control were tested. Improved cropping pattern produced higher mean rice equivalent yield (30.26 t ha<sup>-1</sup> yr.-1), production efficiency (74 kg ha<sup>-1</sup> day-1 ), land utilization index (72 %) and labour employment (382 man-days ha<sup>-1</sup> yr.-1) than farmers’ pattern which were 200, 37, 35 and 55% higher over existing pattern. Average gross return (Tk.486430 ha<sup>-1</sup>), gross margin (Tk. 284787 ha<sup>-1</sup>) and marginal benefit cost ratio (4.60) of improved pattern indicate it’s superiority over farmers’ pattern. The fertility status of soil i.e. pH, organic matter, total N, available P, S, Zn and B content in soil were increased over the initial soil due to addition of garden pea biomass. Thus, inclusion of garden pea in the existing pattern would improve soil health and system productivity as a whole. Experimental findings revealed that there is potential for greater adoption of intensified cropping systems with increased productivity and profitability as compared to rice–rice systems in Mymensingh region.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 37-46</em></p> 2020-11-04T08:34:38+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50116 Effect of Sunflower Residues and Herbicide on Weed Suppression, Grain Yield and Economics of Transplanted Aman Rice 2020-12-16T13:27:29+00:00 SS Tanu samantapstu@yahoo.com P Biswas samantapstu@yahoo.com S Ahmed samantapstu@yahoo.com SC Samanta samantapstu@yahoo.com <p>A field experiment was conducted at Agronomy Field Laboratory, Patuakhali Science and Technology University, Dumki, Patuakhali from July 2018 to November 2018 to evaluate the effect of sunflower residues and herbicides on the yield and economic performance of transplanted Aman rice. Weed control methods tested were T<sub>1</sub> = weedy check (Unweeded control), T<sub>2</sub> = Weed-free check by hand weeding twice, T<sub>3</sub> = Pendimethalin, T<sub>4</sub> = Pretilachlor, T<sub>5</sub> = Butachlor, T<sub>6</sub> = Pyrazosulfuron ethyl, T<sub>7</sub> = Bensulfuron methyl + Acetachlor, T<sub>8</sub> = Bispyriback sodium, T<sub>9</sub> = 2,4-D amine, T<sub>10</sub> = MCPA, T<sub>11</sub> = Sunflower residues, T<sub>12</sub> = Sunflower residues + 100% Pyrazosulfuron ethyl, T<sub>13</sub> = Sunflower residues + 75% Pyrazosulfuron ethyl, T<sub>14</sub> = Sunflower residues + 50% Pyrazosulfuron ethyl. The experiment was laid out in a randomized complete block design with fourteen treatments replicated thrice. Weedy check registered significantly the highest total weed density (354.67 m<sup>-2</sup>) and total weed dry matter (51.81 g<sup>-2</sup>) while weed-free treatment by hand weeding twice recorded significantly the lowest total weed density (6.67 m<sup>-2</sup>) and total weed dry matter 0.49 g<sup>-2</sup>) . Weedy check produced the highest weed index (34.24%) and hand weeding produced the lowest. Among different herbicides applied alone, butachlor had the lowest total weed density (15 m<sup>-2</sup>) and total weed dry matter (6.43 g<sup>-2</sup>) after hand weeding. Hand weeding recorded the highest grain yield (5.14 t ha<sup>-1</sup>) which was statistically similar to pendimethalin, pretilachlor, butachlor, bensulfuron methyl + acetachlor and sunflower residues + 100% pyrazosulfuron ethyl. Higher grain yield was attributed to a higher number of panicle m<sup>-2</sup>, number of filled grains panicle<sup>-1</sup> and 1000-grain weight. The highest gross margin (22955 Tk. ha<sup>-1</sup>) and benefit-cost ratio (1.32) were obtained from butachlor. Integration of sunflower residues with pyrazosulfuron ethyl produced effective weed suppression and satisfactory yield comparable to butachlor. Although the integration is less profitable than butachlor the farmers can use this technology as a feasible and environmentally sound approach in transplanted Aman rice field.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 47-58</em></p> 2020-11-04T08:37:53+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50120 Evaluation of Grain and Nutritional Quality of Transplanted Aman Rice Under Different Nitrogen Levels 2020-12-16T13:27:27+00:00 S Shome parimalbiswas@hotmail.com PK Biswas parimalbiswas@hotmail.com MJ Ullah parimalbiswas@hotmail.com A Barman parimalbiswas@hotmail.com <p>Quality is one of the key characteristics of rice and is largely governed by nitrogen application. An experiment was conducted to scrutinize the effect of nitrogen on quality characteristics of rice, with three nitrogen levels (viz. 50 kg N ha<sup>-1</sup>, 100 kg N ha<sup>-1</sup> and 150 kg N ha<sup>-1</sup>) and four varieties/lines (viz. SAU ADL1, BRRI dhan70, BRRI hybrid dhan6 and SAU ADL11). Results revealed that quality characters of transplanted Aman rice were significantly influenced by nitrogen, variety and their interaction. Increasing trend was observed with the increasing level of nitrogen from 50 to 150 kg ha<sup>-1</sup> regarding hulling percentage and milling outturn while decreasing trend was observed in case of apparent amylose content and imbibition ratio. Maximum protein content (9.60%) and gel consistency (96.16 mm) were recorded at 100 kg N ha<sup>-1</sup>. Among the studied materials, SAU ADL11 performed better in case of all studied parameters. Although interaction of 150 kg N ha<sup>-1</sup> with SAU ADL1 and SAU ADL11 gave maximum value of hulling percentage and milling outturn. In interaction of 100 kg N ha<sup>-1</sup> with these two lines gave maximum protein, gel consistency and satisfactory levels of all quality characters. So, it can be suggested to carry out further investigation with these two rice lines having 100 kg N ha<sup>-1</sup>.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 59-66</em></p> 2020-11-04T09:22:50+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50121 Quinoa (Chenopodium Quinoa Willd.) – a Potential New Crop in Bangladesh: Agronomic Performance With Sowing Date 2020-12-16T13:27:26+00:00 PK Biswas parimalbiswas@hotmail.com ZA Tanni parimalbiswas@hotmail.com <p>The experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka with the financial support of SAURES (Sher-e-Bangla Agricultural University Research System) to study the possibility of growing quinoa in Bangladesh with different sowing dates having two cultivars. The experiment comprised of two factors; Factor A: Cultivar (2) viz., Titicaca (C<sub>1</sub>) and Vikinga (C<sub>2</sub>) and Factor B: Sowing date (5) viz. November -10 (S<sub>1</sub>), December -10 (S<sub>2</sub>), January -10 (S<sub>3</sub>), February -10 (S<sub>4</sub>) and March -10(S<sub>5</sub>). The experiment was laid out in split-plot design with three replications. Results revealed that different growth parameters, yield attributes and yield were significantly varied with different sowing dates. At harvest, the tallest plant height (63.75 cm), highest seed yield (0.77 t ha<sup>-1</sup>) and straw yield (0.89 t ha<sup>-1</sup>) was found from Titicaca but the higher number of branches plant<sup>-1</sup> (17.71) from Vikinga. The tallest plant height (62.54 cm), highest branch number plant-1 (22.82), longest inflorescence (29.62 cm), highest 1000-seed weight (2.56 g), seed yield (1.09 t ha<sup>-1</sup>), straw yield (1.25 t ha<sup>-1</sup>) and harvest index (46.58%) was exhibited by November -10 sowing. The interaction effect of Titicaca sown in November -10 (C<sub>1</sub>S<sub>1</sub>) resulted the highest plant height at harvest (72.83 cm), branches plant<sup>-1</sup> (25.20), 1000-seed weight (2.58 g), seed yield (1.16 t ha<sup>-1</sup>) and straw yield (1.33 t ha<sup>-1</sup>) but the highest inflorescence length (31.46 cm) and harvest index (47.02%) from C<sub>2</sub>S<sub>2</sub> (Vikinga sown in December – 10). From the above results it can be concluded that quinoa – as a new crop is suitable to cultivate in Rabi season of Bangladesh with a complete agronomic management package.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 67-73</em></p> 2020-11-04T09:22:59+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50122 Intercropping Garlic (Allium Sativum) With Chilli (Capsicum Annuum L.) in the Haor Area of Kishoreganj 2020-12-16T13:27:24+00:00 MF Khatun mfkhatun79@gmail.com MS Islam mfkhatun79@gmail.com MA Ali mfkhatun79@gmail.com MO Ali mfkhatun79@gmail.com QM Ahmed mfkhatun79@gmail.com <p>Haor is one of the uncertain areas for crop production and productivity in Bangladesh. Traditionally, single cropping practice in a short cropping season is the key obstacle to increase crop productivity. A study was carried out at Multi Location Testing site (MLT), Nikly under the On-Farm Research Division (OFRD), Bangladesh Agricultural Research Institute (BARI), Kishoreganj at haor area during the two consecutive Rabi seasons of 2015-16 and 2016-17 to evaluate the performance of garlic with chilli intercropping system, its productivity and economic viability. Four treatments were consisted viz., sole chilli, one row garlic in between chilli rows, double rows garlic in between chilli rows and garlic with broadcasting chilli. The highest chilli equivalent yield (28 t ha<sup>-1</sup>) was obtained from one row garlic in between chilli rows and the minimum chilli equivalent yield was (15 t ha<sup>-1</sup>) obtained in sole chilli. These intercropping practices yield increased 25-89% over the sole chilli. The highest gross return (Tk.559400 ha<sup>-1</sup>), gross margin (Tk. 428240 ha<sup>-1</sup>) and BCR (4.26) were found in one row garlic in between chilli rows and the lowest gross return (Tk. 297800 ha<sup>-1</sup>) and gross margin (Tk.188080 ha<sup>-1</sup>) were obtained from sole chilli but the lowest BCR (1.74) in double rows garlic in between chilli rows. Considering the experimental findings of two years, one row garlic in between chilli rows would be a suitable intercropping system for higher productivity and economic return.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 75-81</em></p> 2020-11-04T09:28:05+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50123 Impact of Integrated Weed Management on Bulb Yield of Onion 2020-12-16T13:27:23+00:00 MR Islam rislamriaz@gmail.com M Moniruzzaman rislamriaz@gmail.com AJM Obaidullah rislamriaz@gmail.com AHF Fahim rislamriaz@gmail.com <p>The experiment was conducted at Regional Spices Research Centre, Bangladesh Agricultural Research Institute, Magura, Bangladesh during 2016-2017 and 2017- 2018 to optimize weed management practice for onion bulb production through Integrated Weed Management (IWM). The experiment was laid out in a Randomized Complete Block Design with three replications. Two different herbicides (Oxadiazon and Pendimethalin) with different doses in combination with hand weeding (HW) were used as treatments. The total number of treatments were 12 viz. T<sub>1</sub>=Oxadiazon@1.0 l/ha, T<sub>2</sub>=Oxadiazon@1.5 l/ha, T<sub>3</sub>= Oxadiazon@2.0 l/ha, T<sub>4</sub>= Oxadiazon@1.0 l/ha + one HW at 45 DAT (Days After Transplanting), T<sub>5</sub>= Oxadiazon@1.5 l/ha + one HW at 45 DAT,T<sub>6</sub>= Oxadiazon@2.0 l/ha + one HW at 45 DAT, T<sub>7</sub>=Pendimethalin@1.0 l/ha, T<sub>8</sub>=Pendimethalin@1.5 l/ha<strong>, </strong>T<sub>9</sub>= Pendimethalin@1.0 l/ha + HW at 45 DAT, T<sub>10</sub>= Pendimethalin@1.5 l/ha+ HW at 45 DAT, T<sub>11</sub>= Weed free and T<sub>12</sub> = Weedy check (control). The onion var. BARI Piaz<sup>-1</sup> was used as the test crop. The highest bulb yield (7.63 tha<sup>-1</sup> in 2016 &amp; 9.56 t ha<sup>-1</sup>in 2017) and benefit cost ratio (2.14 in 2016 and 2.46 in 2017) were obtained from T<sub>6</sub>= Oxadiazon@2.0 l/ha + one hand weeding at 45 DAT while the lowest bulb yield (4.22 t ha<sup>-1</sup>in 2016 and 6.28 t ha<sup>-1</sup>in 2017) was obtained from T<sub>12</sub> = Weedy check (control), while lowest benefit cost ratio (1.33 in 2016 and 1.74 in 2017) from treatment T<sub>11</sub> =Weed free. It was concluded that Oxadiazon@2.0 l/ha with one hand weeding at 45 days after transplanting performed better for controlling weed and maximizing bulb yield of onion.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 83-89</em></p> 2020-11-04T09:39:13+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50124 Post-Emergence Weed Control of Strip-Planted Wheat by Herbicides 2020-12-16T13:27:21+00:00 T Zahan taslimazahan_tzp@yahoo.com MR Islam taslimazahan_tzp@yahoo.com MA Hossain taslimazahan_tzp@yahoo.com MF Hossain taslimazahan_tzp@yahoo.com Q Naher taslimazahan_tzp@yahoo.com S Ishtiaque taslimazahan_tzp@yahoo.com MA Ali taslimazahan_tzp@yahoo.com <p>Transformation of a wheat field from conventionally heavy tillage to stripplanting is beneficial considering soil health improvement and savings in cultivation cost. Therefore, an experiment was conducted at the experimental field of On-Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur during Rabi season of 2017-18 and 2018-19 to evaluate some available post-emergence herbicides for managing weeds in strip-planted wheat var. BARI Gom-30 and to find out the most effective post-emergence herbicide and its suitable rate for controlling weeds under strip tillage system. Three postemergence herbicides (ethoxysulfuron, carfentrazone-ethyl plus isoproturon and carfentrazone-ethyl) were tested at their label rate and double of the label rate and their performance were compared with two times manual weeded control treatment. The study revealed that application of ethoxysulfuron at label rate and double of the label rate was effective for grass weed control, but not for broadleaf weeds. Application of carfentrazone-ethyl plus isoproturon both at label rate and double of the label rate was effective to control all types of weeds. Moreover, the highest grain and straw yields were recorded from label rate application of carfentrazone-ethyl plus isoproturon and its double rate application was also offered similar results in case of grain and straw yields. However; considering undetermined herbicide residual issue and having adverse effect on wheat leaves and finally on yield, the study discourages double of the label rate application of carfentrazone-ethyl plus isoproturon for managing weeds in wheat under strip tillage system.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 91-99</em></p> 2020-11-04T09:41:43+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50125 Effect of Weeding and Herbicide Management on Fibre Yield and Yield Attributes of Tossa Jute 2020-12-16T13:27:20+00:00 J Ferdous tanny.jannat92@gmail.com MS Hossain tanny.jannat92@gmail.com MA Alim tanny.jannat92@gmail.com MM Islam tanny.jannat92@gmail.com <p>The experiment was conducted at Jute Agriculture Experimental Station (JAES), Manikganj and Jute Research Regional Station, Faridpur during 2019 to find out the effect of weeding and herbicide management on fibre yield and yield attributes of Tossa jute (Var. O-9897) cultivation. Two herbicide treatments, such as; W<sub>1</sub> = Fenoxaprop-p-ethyl (Whip Super 9 EC) and W<sub>2</sub> = Ethoxysulfuron (Sunrice ® 150WG) were tested. There were 14 treatments. T<sub>1</sub>- T<sub>6</sub> treatments did not include hand weeding which was done 20 days after the herbicide spray [T<sub>1</sub> = 100% recommended doses (RD) of both W<sub>1</sub>and W<sub>2</sub> where W<sub>2</sub> was sprayed one day after that of W<sub>1</sub>, T<sub> 2</sub> = 50% dose both of W1and W<sub>2</sub> where W<sub>2 </sub>was sprayed one day after that of W1, T<sub>3</sub> = 100% dose of both W<sub>1</sub> and W<sub>2</sub> where both of the herbicide mixed together and sprayed on the same day, T<sub>4</sub> = 50% dose of both W<sub>1</sub> and W<sub>2</sub> where mixture of both were sprayed on the same day, T<sub>5</sub> = only 100% dose of W<sub>1</sub>, T<sub>6</sub> = only 100% dose of W<sub>2</sub>]. The treatments T<sub>7</sub> - T<sub>12</sub> included one had weeding following the application of herbicides [T<sub>7</sub> = 100% dose both of W<sub>1</sub> and W<sub>2</sub> where W<sub>2</sub> was sprayed 1 day after that of W<sub>1</sub>, T<sub>8</sub> = 50% dose both of W1 and W<sub>2</sub> where W<sub>2</sub> was sprayed 1 day after of W<sub>1</sub>, T<sub>9</sub> = 100% dose both of W<sub>1</sub> and W<sub>2</sub> were mixed and sprayed together on the same day, T<sub>10</sub> = 50% dose both of W<sub>1</sub> and W<sub>2</sub> mixed together and sprayed same day, T<sub>11</sub> = only 100% dose of W<sub>1</sub>, T<sub>12</sub> = only 100% dose of W<sub>2</sub>]. The treatments T<sub>13</sub> and T<sub>14</sub> did not include herbicide application [T<sub>13</sub> = Two hand weeding (20-25 and 45-50 DAS) and T<sub>14</sub> = control with no herbicide application]. The experiment was laid out in RCBD with three replications. Results revealed that Khudesama (Echinochloa colonum) and Angulighash (Digitaria sanguinalis), Khudesama and Mutha (Cyperus rotundus) were best controlled by herbicide application. T<sub>3</sub> gave highest fibre yield of 1.89 tha<sup>-1</sup> when W<sub>1</sub> and W<sub>2</sub> sprayed at the same day with 100% RD. In case of one weeding 20 days after spray fibre yield and stick yield were differed significantly as compared to those of control at Manikganj. Treatment T<sub>7</sub> gave highest fibre yield (3.11 t ha<sup>-1</sup>) when W<sub>2</sub> sprayed after 1 day of W<sub>1</sub> with 100% RD. At Faridpur, T<sub>3</sub> gave the highest fibre yield (2.68 t ha<sup>-1</sup>) when W<sub>1</sub> and W<sub>2</sub> sprayed at the same day with 100% RD. Incase of one weeding 20 days after spray, T<sub>7</sub> gave highest fiber yield (2.79 t ha<sup>-1</sup>) when W2 was sprayed 1 day after that of W1 with 100% RD.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 101-106</em></p> 2020-11-04T10:04:10+00:00 ##submission.copyrightStatement## https://www.banglajol.info/index.php/BAJ/article/view/50126 Seed Yield and Yield Components of Sesame as Affected by Various Weed Control Methods 2020-12-16T13:27:18+00:00 J Hossain jamilbari11@gmail.com MO Ali jamilbari11@gmail.com MA Islam jamilbari11@gmail.com MS Alam jamilbari11@gmail.com MR Islam jamilbari11@gmail.com J Rahman jamilbari11@gmail.com <p>Weed control strategy greatly influences on weed infestation and yield of sesame. An experiment was conducted at Regional Agricultural Research Station, Ishurdi, Pabna during Kharif<sup>-1</sup> season of two consecutive years 2015-16 and 2016-17 to find out the suitable weed control methods in sesame. It comprises five weed control methods viz., Application of Panida (T<sub>1</sub>), Application of Panida with one hand weeding at 20 DAE (T<sub>2</sub>), One hand weeding at 20 DAE (T<sub>3</sub>), Two hand weedings at 20 and 40 DAE (T<sub>4</sub>) and Control (no weeding) (T<sub>5</sub> ). The experiment was laid out in a randomized complete block design with three replications. Among the weed species, Cyperus rotundus and Digitaria sangunalis were the most abundant weeds. Application of Panida with one hand weeding at 20 DAE (T<sub>2</sub>) gave the lowest weed density, weed biomass and the highest weed control efficiency followed by application of Panida (T<sub>1</sub>) in both years. Weed biomass influenced negatively on plant height, number of capsule plant<sup>-1</sup>, seed yield and stalk yield. The maximum seed yield and stalk yield were also obtained from T<sub>2</sub> which was statistically similar to T<sub>1</sub> treatment and the minimum seed yield from T<sub>5</sub>. Economic analysis indicated that T<sub>2</sub> gave higher gross return but T<sub>1</sub> provided higher gross margin and benefit cost ratio. The treatment, T<sub>4</sub> showed higher total variable cost due to the high cost of labour for hand weeding with the increase of variable cost, which affected the marginal return and benefit-cost ratio. However, based on the economic point of view, application of Panida in pre-emergence condition (T<sub>1</sub>) was a profitable and suitable weed control method in summer sown sesame.</p> <p><em>Bangladesh Agron. J. 2020, 23(1): 107-116</em></p> 2020-11-04T10:07:03+00:00 ##submission.copyrightStatement##