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Journal Cover   Bangladesh Journal of Agricultural Research
  [3 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 0258-7122
   Published by Bangladesh Journals Online Homepage  [103 journals]
  • Floral biology of indigenous pummelo genotypes

    • Authors: MA Hoque
      Pages: 177 - 188
      Abstract: Flower morphology and bud development of pummelo accessions CG-1, CG-18 and CG-151 were studied at the Pummelo Orchard of Regional Agricultural Research Station, BARI, Akbarpur, Moulvibazar and the Horticulture Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University during 2008-2009. Pummelo flowers were bisexual, bore singly on leaf axils or in clusters with or without leaf on stem in all accessions, and colour were white. Calyx diameter varied from 0.94 in CG-1 to 1.02 in CG-18. Number of petals per flower ranged from 4.0 to 4.5. Anthers were yellow in colour and only CG- 151 produced few rudimentary styles. Diameter of stigma varied from 0.39 mm to 0.49 mm. Number of locules per ovary was in between 14.6 to16.0 and number of ovules per locules varied from 4.0 to 9.0. Stages of floral bud development from initiation to anthesis were divided into 9 distinct stages. In pummelo, a total of 27.7 to 31.2 days were required from a bud initiation to reach its fully developed stage. Suitable time for emasculation of pummelo flowers was found within 26 days from flower bud initiation. Between 3:00am to 5:00am, about 76% flowers were found to be opened and between 4:00pm to 5:00pm in all the three accessions, dehiscence of pollens was recorded. Abscission of stamen, petal and style started after 50.8, 76.4 and 162.3 hrs and completed after 128.4, 137.9 and 228.3 hrs of anthesis, respectively.Bangladesh J. Agril. Res. 40(2): 177-188, June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Determination of optimum maturity stage of banana

    • Authors: MN Amin, MN Hossain, MA Rahim, MB Uddin
      Pages: 189 - 204
      Abstract: Time of harvest based on maturity indices is very important for fruit quality. Fruits harvested before optimum maturity may not ripe adequately and may not develop adequate flavor, while fruits harvested late (over-matured) have a shorter postharvest life and deteriorate rapidly. Climacteric fruits can be harvested after reaching full maturation, and before reaching the ripening stage. The tissue culture suckers of BARI Kola1 and Sabri Kola varieties were used for the study. The experiment was conducted at the Farm Machinery and Postharvest Process Engineering Division, Bangladesh Agricultural Research Institute, Gazipur in 2009-10. Optimum maturity stage of banana fruits reduced the postharvest losses and extended the storage life of fruits. BARI Kola 1 and Sabri Kola reached to flowering stages 10 and 15 months after planting, respectively. The optimum maturity stages of BARI Kola 1 and Sabri Kola were found to 120 and 100 days after emergence of flowering (DAEF) in summer and 130 and 110 DAEF in winter seasons, respectively. Higher pulp to peel ratio and yield of both the varieties was found in summer than those of winter season. The pre-harvest loss of banana fruits started at the point when it just exceeded the optimum maturity stage. Decreasing trend of shelf-life and firmness of fruits for both the varieties were observed with the advancement of maturity. On the other hand, dry matter content, angularity, pulp to peel ratio, and yield of banana fruits increased with the advancement of harvesting days. Degree days of these varieties were found to be 1750 and 1620, respectively.Bangladesh J. Agril. Res. 40(2): 189-204, June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Response of elevated temperature on carbohydrate accumulation and grain
           yield in different wheat cultivars

    • Authors: Soyema Khatun, Jalal Uddin Ahmed
      Pages: 205 - 215
      Abstract: In order to study the response of terminal heat stress on carbohydrate accumulation and grain yield of three wheat cultivars namely BARI Gom 25, BARI Gom 26 and Pavon 76 were sown on 18 November, 2011 in experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur in Bangladesh and two temperature regimes viz. normal (23°C in open field) and elevated (6 ± 1°C higher compare to open field mean air temperature in polythene chamber) were created. Elevated temperature shortened the grain filling duration by 5-day in BARI Gom 25 and BARI Gom 26 and 10-day in Pavon 76. Under elevated temperature condition grain starch synthesis was found to be stopped at 25 days after anthesis (DAA) in Pavon 76 which in BARI Gom 26 appeared 5-day later (30 DAA) in spite of higher level of soluble sugar in grain. Results indicate that early failure of conversion of sugar to starch rather than supply of soluble sugar under elevated temperature condition were responsible for shortening of grain filling duration and smaller grain size in all wheat cultivars. Smaller reduction of grain size and grain number along with smaller reduction of grain weight per main stem under elevated temperature condition finally contributed to sustain negligible loss of grain yield, biological yield and harvest index in BARI Gom 25 and BARI Gom 26 compare to Pavon 76.Bangladesh J. Agril. Res. 40(2): 205-215, June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Effect of phosphorus in reducing arsenic availability in soils and arsenic
           uptake by maize

    • Authors: Habib Mohammad Naser, Sarmin Sultana, Sohela Akhter, Rowshan Ara Begum
      Pages: 217 - 227
      Abstract: A pot experiment was carried out in the net house of Soil Science Division of Bangladesh Agricultural Research Institute (BARI), Joydebpur Gazipur on 16 March 2010 and 12 January 2011 with a view of study the effect of P addition to As-contaminated soils and the consequences on As uptake of maize (Zea mays L.) plants. Experiments were conducted in consecutive two years. Arsenic was added to the pots at the rates of 0, 20 and 30 mg kg−1, and P at 0, 30 and 60 mg kg−1. Thus there were seven treatment combinations, i.e., As0P0, As20P0, As30P0, As20P30, As20P60, As30P30, and As30P60. Phosphorus fertilization increased total As uptake, but the increase was restricted to the root. As concentration of root was much higher than that of shoot. As concentrations in shoot and root were positively correlated (r = 0.913, r = 0.975; P<0.01) in 2010 and 2011, respectively, and plant As was positively correlated to the plant P in shoot (r = 0.883 and 0.875; P<0.01) and in root (r = 0.829, P<0.05 and 0.917; P<0.01). The plants took up much greater amounts of P than As. Although it is well known that phosphate inhibits arsenate uptake (Wang et al., 2002), but it is highlighted the role of P fertilization to increase As uptake in maize plants. The results presented here indicate P supply may effect in higher As allocation to the plant parts, which has practical application in soil-crop systems. These findings could have important implications for human health and agricultural systems, since it may reduce As contamination through the consumption of crops (phytoextraction) grown on contaminated soils.Bangladesh J. Agril. Res. 40(2): 217-227, June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Efficacy of fungicides to control Stemphylium blight (Stemphylium
           botryosum) of lentil

    • Authors: M Shahiduzzaman, M Abul Hossain, ND Kundu
      Pages: 229 - 233
      Abstract: A field experiment was carried out during Rabi seasons of 2011-12 and 2012-13 to evaluate the efficacy of fungicides in controlling Stemphylium blight (S. botryosum) of lentil. Five fungicides were evaluated under higher disease pressure (106 ml-1) of Stemphylium blight. Results revealed that Foliar spray (4 sequences) with Rovral 50WP (Iprodione) @ (0.2%) and Secure 600WG (Fenamidione+Mancozeb) @ (0.2%) at an interval of 7 days effectively controlled the disease and increased yield of lentil by 31.99% and 28.20%, respectively. The fungicides may be selected for control of the disease.Bangladesh J. Agril. Res. 40(2): 229-233 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Status of conservation agriculture based tillage technology for crop
           production in Bangladesh

    • Authors: M Israil Hossain, MJU Sarker, M Arshadul Haque
      Pages: 235 - 248
      Abstract: Conservation agriculture (CA) based tillage technology permits direct seeding through the moderate level of crop residue. CIMMYT introduced this technology in the farmers’ field of Bangladesh for wheat crop in collaboration with Wheat Research Centre, Bangladesh Agricultural Research Institute (BARI). Farmers accept CA based tillage technologies considering the advantages of higher yields, reduced cost of tillage operation, and minimum turn around time between the crops. Up land crops are more suitable under these tillage technologies. Weed management in rice cultivation is not yet in a good shape. Most of the tillage implements are operated by imported Chinese two wheel tractor (power tiller). There are few four wheel tractor CA implement using in research farm. Local manufacturers are being fabricated these cost effective small minimum tillage seed drill, raised bed planter, zero till drill, and strip till drills efficiently in different districts of Bangladesh. Farmers accept CA technologies in their field, especially raised bed planting and minimum tillage technology. There are about 425 numbers of raised bed planters and 865 minimum tillage seed drill in the country. Area coverage under bed planting and minimum tillage system are 5764 ha and 21850 ha, respectively. There are 20125 numbers of farmers involved in raised bed farming. There is a big prospect accelerating the CA based tillage technology in the farmers’ field as irrigation water availability becoming limited or more costly. Mind set up is the big issue for adopting CA tillage technology. Training and multi disciplinary approaches can push forward these tillage technologies ahead.Bangladesh J. Agril. Res. 40(2): 235-248 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Evaluation of sweet potato genotypes against salinity

    • Authors: Farida Begum, M Azizul Haque, MS Alam, HC Mohanta
      Pages: 249 - 257
      Abstract: Ten sweet potato lines/varieties were studied for growth response under NaCl salt stress condition. The rooting ability, in terms of root number, root length and root volume was studied. Growth in terms of root and shoot dry weight was also studied. A variation was recorded among the eight varieties and two lines in different doses of NaCl for growth responses in terms of rooting ability. The genotypes BARI SP-9, showed rooting ability up to 20 dS-m among the 10 genotypes. The genotypes BARI SP-2, BARI SP-3, BARI SP-7, BARI SP-9 and line SP-613 showed increase in root number upto 6 dS-m as compared to control. Accumulation of Na+ increased with a concomitant decrease in K+. Sweet potato plantlet transport less amount of Na+ and more amount of K+ to the shoot. Genotypes BARI SP-7 and BARI SP-9 showed better performance upto15dS-m.Bangladesh J. Agril. Res. 40(2): 249-257 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Improvement from mustard-Boro-T. Aman cropping pattern to
           mustard-Boro-jute-T. Aman

    • Authors: MM Rahman, MA Rahaman, M Ahmed, MM Uddin, AK Choudhury
      Pages: 259 - 270
      Abstract: The experiment was conducted at the farmers field of FSRD site, Elenga and MLT site Modhupur, Tangail during two consecutive years 2011-12 and 2012- 13 to study the productivity, production efficiency, land use efficiency and economic return of the improved cropping pattern (Mustard - Boro - Jute -T. Aman) against the existing cropping pattern (Mustard -Boro - T. Aman) through incorporating of modern crop varieties and improved management practices. The experiment was laid out in randomized complete block design with six dispersed replications. The pooled data of improved management practice for the pattern produced significantly higher yield in Mustard and T. Aman rice respectively and also gave additional jute yield. The gross return and gross margin were higher in improved pattern compared to that of existing farmer’s pattern with only 149 and 151% extra cost at FSRD site, Elenga and MLT site Modhupur, respectively. The higher benefit cost ratio (1.74 and 1.79), rice equivalent yield (22.41 and 21.82), production efficiency (40.19 and 39.48) and land-use efficiency (95.75 and 96.48) indicated the superiority of the improved pattern over the farmer’s existing pattern at both sites. Higher rice equivalent yield indicates that improved cropping pattern (Mustard - Boro - Jute -T. Aman) could be suitable in Tangail region for increasing crop productivity as well as cropping intensity.Bangladesh J. Agril. Res. 40(2): 259-270 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Performance of lentil varieties under relay and minimum tillage conditions
           in T. Aman rice

    • Authors: MR Islam, MK Uddin, MO Ali
      Pages: 271 - 278
      Abstract: A study on comparative productive efficiency and feasibility of lentil varieties both at relay and minimum tillage were conducted at the Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh during the Rabi season of 2007-08 and 2008-09. Three lentil varieties viz. BARI Masur-2, BARI Masur-3 and BARI Masur-4 and two sowing methods viz. relay sowing and furrow sowing (Minimum tillage) were compared. The highest seed yield (1.59 t/ha) was obtained from BARI Masur-4 because of highest number of pods/plant and plant population/m2 while lowest from BARI Masur-2 (1.39 t/ha). The sowing methods had significant effect on the seed yield of lentil. Crops sown in furrows produced higher seed yield (1.60 t/ha) than that of crops in relay sowing. The interaction effect between varieties and sowing methods also had significant effect on the seed yield and yield attributes. The lentil variety BARI Masur-4 when grown in furrows gave the highest seed yield (1.70 t/ha). Though seed yield and gross return were highest in furrow sowing but highest benefit cost ratio (4.67) was found in relay sowing method.Bangladesh J. Agril. Res. 40(2): 271-278 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Effectiveness of different substrate materials to prepare Trichoderma
           harzianum based bio-fungicides to control foot and root rot (Fusarium
           oxysporum) of tomato

    • Authors: MI Faruk, ML Rahman, MM Rahman, R Islam, MA Rahman
      Pages: 279 - 289
      Abstract: An investigation was undertaken to evaluate the effectiveness Trichoderma harzianum based bio-fungicides multiplied on different substrates. The substrates was rice bran, wheat bran, grass pea bran and their combinations with mustard oilcake (MOC) were used to mass culture T. harzianum for the management of foot and root rot disease of tomato seedling caused by Fusarium oxysporum in seedbed. All combinations of carrier materials were found effective for preparing T. harzianum based bio-fungicides to promote germination, seedling growth and reducing pre-emergence and post-emergence mortality of tomato seedling under F. oxysporum inoculated seedbed soils. The shoot length, shoot weight, root length and root weight of tomato seedling were enhanced significantly by the application of different substrate materials of T. harzianum based bio-fungicides under F. oxysporum inoculated seedbed conditions. The individual (rice bran, wheat bran, grass pea bran) and combination of substrates (rice bran + wheat bran, rice bran + mustard oilcake, rice bran + wheat bran + MOC and wheat bran + grass pea bran + MOC) were equally suitable for mass culturing of effective T. harzianum bio-fungicides for the management of foot and root rot disease of tomato seedling in seedbed condition.Bangladesh J. Agril. Res. 40(2): 279-289 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Technical and economic performance of combined harvester in farmers’
           field

    • Authors: MA Hossain, MA Hoque, MA Wohab, MA M Miah, MS Hassan
      Pages: 291 - 304
      Abstract: Labour scarcity, harvesting loss, timely harvesting and harvesting cost are crucial in rice and wheat harvesting in Bangladesh. Combine harvester is a newly introduced harvesting machine in Bangladesh. This study was undertaken to evaluate the technical and economic performance of combine harvester available in farmers‟ field and farmer‟s perception regarding the use of combine. Field tests of two new (CLASS andDaedong) and two refresh (Kukje and Anower) combine harvesters were conducted for harvesting rice and wheat in the farners‟ field of Jessore, Pabna,Dinajpurand Thakurgaon districts during 2011-12. Primary data were collected from 30 adopter and 30 non-adopter farmers from each district of Bogra, Rangpur, Dinajpur and Thakurgaon through direct interviewingduring 2012-13. Information was also collected from different combine harvester traders available in Bangladesh. Average time, cost and grain saving by combine harvester over manual methods were 97.50, 35.00 and 2.75%, respectively. Benefit cost ratio of CLASS, Daedong, Kukje and Anower combine harvesters were found to be 2.68, 2.11, 2.29 and 2.70, respectively. The payback periods of refresh combine harvesters were lower than the new combine harvester. There were some mechanical problems observed in refresh combine harvesters during field operations. New harvester was observed almost trouble free and popular to the famers. Scarcity of spare parts and mechanic service were the main problems for repair and maintenance of the combine harvesters in farm level. Considering the technical performance of combine harvester and demand of the farmers, new combine harvester may be introduced in commercial basis in Bangladesh.Bangladesh J. Agril. Res. 40(2): 291-304 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Genetic variability, character association and path analysis in Brassica
           rapa L. Genotypes

    • Authors: S Naznin, MA Kawochar, S Sultana, MSR Bhuiyan
      Pages: 305 - 323
      Abstract: Thirty three genotypes of Brassica rapa L. were evaluated in order to find out their inter-genotypic variability; character association and path coefficient of seed yield/plant and its component characters. BARI sarisha-6 x TORI-7 S-45 showed best result in terms of early maturity (75 days) and higher seed yield/plant (5.28g) than check varieties. The character, plant height, was highly influenced by the environment whereas, all other characters influenced the least. Number of secondary branches/plant showed the highest phenotypic and genotypic coefficient of variation. Moreover, number of siliquae/plant, number of secondary branches/plant and number of primary branches/plant showed high heritability (93.16%, 75.69% and 68.03%, respectively) couple with high genetic advance in percent of mean (37.74%, 73.55% and 26.82%, successively). The seed yield/plant showed significant positive correlation with number of siliquae/plant (rg = 0.7011**, rp = 0.5684**), number of primary branches/plant (rg = 0.5611**, rp = 0.4016*) and number of secondary branches/plant (rg = 0.5160**, rp = 0.4098*) revealing that selection based on these traits would be judicious. Path analysis showed that the number of siliquae/plant (0.4679), number of primary branches/plant (0.2823) and number of secondary branches/plant (0.0092) were the most important contributors to seed yield/plant. The results indicated that number of siliquae/plant, number of primary branches/plant and number of secondary branches/plant can be used as selection criteria to increase seed yield/plant in rapeseed.Bangladesh J. Agril. Res. 40(2): 305-323 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
  • Suitability study of local bush bean cultivars intercropped with hybrid
           maize under different planting system in hilly areas

    • Authors: M Shaheenuzzamn, A Biswas, N Chakma, MN Islam, M Salim
      Pages: 325 - 332
      Abstract: An intercropping experiment was conducted on hill valley at Hill Agricultural Research Station, Ramgarh and Kharachari during two consecutive rabi seasons of 2012-13 and 2013-14 to select suitable local bush bean cultivar for intercropping with hybrid maize in hilly areas of Bangladesh. Seven intercropping treatments viz., T1 = Normal maize spacing (75 cm × 25 cm) + 2 rows black seeded bush bean,T2 = Normal maize spacing (75 cm × 25 cm) + 2 rows pink seeded bush bean,T3 = Maize wider spacing (100 cm × 25 cm) with 1 plant/hill + 3 rows black seeded bush bean,T4 = Maize wider spacing (100 cm × 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean, T5 = Maize wider spacing (100 cm × 50 cm) with 2 plants/hill + 3 rows black seeded bush bean, T6 = Maize wider spacing (100 cm × 50 cm) with 2 plants/hill + 3 rows pink seeded bush bean and T7 = Sole maize spacing (75 cm × 25 cm) were used. Sole hybrid maize produced the highest grain yield at both the locations. Bush bean cultivars in intercropped situation depressed hybrid maize yields by 7.15-37.29% at Ramgarh and 2.56-37.51% at Khagrachari compared to sole hybrid maize. The highest maize equivalent yield of 23.10 t/ha at Ramgarh and 24.08 t/ha at Khagrachari was recorded in maize wider spacing (100 cm × 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean combination (T4). The same treatment also showed the highest gross return (Tk 277200/ha at Ramgarh and Tk 288960/ha at Khagrachari), gross margin (Tk 180050/ha at Ramgarh and Tk 191810/ha at Khagrachari) and benefit cost ratio (2.85 at Ramgarh and 2.97 at Khagrachari). The result revealed that maize wider spacing (100 cm × 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean could be suitable and economically profitable for hybrid maize and bush bean intercropping in hill valleys of Bangladesh.Bangladesh J. Agril. Res. 40(2): 325-332 June 2015
      PubDate: 2015-08-20
      Issue No: Vol. 40, No. 2 (2015)
       
 
 
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