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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  [109 journals]
  • Effect of hot water treatment in controlling fusarium wilt of gladiolus

    • Authors: L Yasmin, MA Ali, TK Dey
      Pages: 393 - 401
      Abstract: The experiment was conducted at the Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during 2010-12 following two factors RCB design with four replications. The levels of Factor A (Duration): were i) T1 = 5 minutes, ii) T2 = 10 minutes and iii) T3 = 15 minutes. Factor B (Water temperature): i) A1 = 500C, ii) A2 = 520C, iii) A3 = 540C, iv) A4 = 560C and v) A5 = Control (normal water). The treatment combinations were evaluated against the wilt disease of gladiolus (Fusarium oxysporum f. sp. gladioli) under naturally infested field condition. Corm treated with hot water at 540C for 5 minutes was very effective in inhibiting the wilt disease incidence and thereby resulting better corm emergence, flower sticks plot-1, corm plot-1 and comel yield of gladiolus. Corm treated with hot water at 520C for 10 minutes appeared moderately effective against Fusarium wilt as well as better flower, corm and cormel yield of gladiolus under field condition.Bangladesh J. Agril. Res. 42(3): 393-401, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34498
      Issue No: Vol. 42, No. 3 (2017)
       
  • Marker assisted introgression of bacterial blight resistant gene into
           submergence tolerance rice variety BRRI dhan52

    • Authors: ME Kabir, KM Iftekharuddaula, MAI Khan, MAK Mian, NA Ivy
      Pages: 403 - 411
      Abstract: BRRI dhan52 is a uniquire submergence tolerant rice variety containing prominant genetic background of BR11, a mega rainfed lowland rice (RLR) variety of Bangladesh, but is susceptible to bacterial blight (BB) caused by Xanthomonas oryzae pv. oryzae (Xoo). The variety is considerably popular in the southern part of Bangladesh due to its high yield in flash flood condition and comparatvely medium slender grain. Molecular markers linked to BB resistance genes (Xa genes) and submergence QTL (SUB1) were utilized in a marker-aided selection program to develop elite breeding lines with broad-spectrum resistance to bacterial blight. Sequence tagged site (STS) and simple sequence repeat (SSR) markers were essentially used to detect the genes for BB and submergence as well. In backcross generation, markers closely linked to Xa21 and SUB1 QTL were used to select desirable plants possessing these resistance genes (foreground selection) and microsatellite markers polymorphic between donor and recurrent parent were also used to select plants that have maximum contribution from the recurrent parent genome (background selection). In BC1F1 generation, three best plants consiquently were selected from previously selected ten double heterozygous (Xa21 and SUB1 QTL) plants. The percentage of recipient genome recovery in the best plant 1, 2 and 3 were 78.7%, 75.83% and 75.4%, respectively. Eventually this work illustrates the successful application of marker-assisted breeding for introgression of bacterial blight resistant gene into a rice variety of Bangladesh.Bangladesh J. Agril. Res. 42(3): 403-411, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34499
      Issue No: Vol. 42, No. 3 (2017)
       
  • Production potential and economics of mung bean in rice based cropping
           pattern in Sylhet region under AEZ 20

    • Authors: MI Nazrul, MK Hasan, MRI Mondal
      Pages: 413 - 424
      Abstract: The study was conducted at the farmers field in Sylhet under AEZ 20 during three consecutive years 2012-13, 2013-14 and 2014-15 to determine the productivity and profitability of cropping patterns viz., IP: improved pattern (Mung bean-T. aus-T. aman rice) and FP: farmer’s pattern (Fallow-T. aus-T. aman rice) through incorporation of high yielding varieties and improved management practices. The experiment was laid out in randomized complete block design with six dispersed replications. Results showed that the improve pattern with management practices provided 10.85 and 14.32% higher grain yield of T. aus and T. aman rice, respectively; also contributed more T. aman mean rice equivalent yield (11.81 t ha-1) compared to farmer’s pattern. Mean sustainable yield index (77.63%), production efficiency (47.88 kg ha-1day-1), and land use efficiency (67.66%) were maximum in Mung bean-T. aus- T. aman rice cropping system. Similarly, the highest mean gross margin (Tk.126762 ha-1) with benefit cost ratio (2.10) was obtained from improved pattern. Three years results revealed that 42% extra cost provides an ample scope of considerable improvement of the productivity of improved pattern with the inclusion of Mungbean before T. aus rice.Bangladesh J. Agril. Res. 42(3): 413-424, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34500
      Issue No: Vol. 42, No. 3 (2017)
       
  • Combining ability estimates in maize (Zea mays L.) Through line ×
           tester analysis

    • Authors: S Ahmed, S Begum, MA Islam, M Ratna, MR Karim
      Pages: 425 - 436
      Abstract: Eighteen advanced S4 lines of maize extracted from NK46 were evaluated through line × tester method by using two testers for grain yield and its components. General combining ability (GCA) and specific combining ability (SCA) effects of crosses were determined to evaluate the prospective inbred lines. Highly significant genotypic differences for all of six characters, i.e. days to 50% tasselling, Days to 50% silking, plant height, ear height, 1000 kernel weight, and yield indicated presence of wide range of variability among the genotypes for those traits. Non-additive gene action was predominant. Four lines for days to 50% tasselling, one for days to 50% silking, two for plant height, one for ear height, three for 1000 kernel weight, and four for yield were found with significant GCA effects in desired direction. For days to tasselling, days to silking, plant height and ear height, none of 36 cross combinations confirmed significant SCA effects. Five combinations showed significant positive SCA effects for 1000 kernel weight. For yield two crosses showed significant positive SCA. Considering the results of present study, based on GCA and SCA analysis of observed characters seven lines namely, NK46-2, NK46-4, NK46-10, NK46- 13, NK46-18, NK46-43 and NK46-44 were selected for further breeding programBangladesh J. Agril. Res. 42(3): 425-436, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34501
      Issue No: Vol. 42, No. 3 (2017)
       
  • Seed production potentiality in yield and quality of eggplant (Solanum
           melongena L.) Grown under summer and winter seasons

    • Authors: MB Rahman, MM Hossain, MM Haque, NA Ivy, S Ahmad
      Pages: 437 - 446
      Abstract: Two separate field experiments were conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during April to October 2012 (summer season) and October 2012 to March 2013 (winter season) to evaluate and compare the seasonal effect on fruit set, seed yield and seed quality of eggplant. Six eggplant varieties (BARI Begun-1, BARI Begun-5, BARI Begun- 6, BARI Begun-8, BARI Begun-9 and Khotkhotia) were grown separately with proper isolation in both the seasons. Significant variation in fruit set per plant, seed yield per fruit and seed quality of eggplant were observed due to execution of growing seasons. The highest seed yield per fruit was obtained from BARI Begun-6 in both the seasons. Number of fruits per plant, seeds per fruit and 1000-seed weight showed the highest in winter season (October to March) as a result the highest seed yield was obtained from the same season. Winter season also showed the best seed quality attributes like germination (%), co-efficient of germination and vigour index irrespective of variety used. Based on seed yield and seed quality, winter season (October to March) found to be more favourable for quality seed production of eggplant in Bangladesh condition.Bangladesh J. Agril. Res. 42(3): 437-446, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34502
      Issue No: Vol. 42, No. 3 (2017)
       
  • Effect of compost tea, streptomycin and cupravit in controlling bacterial
           leaf blight of rice

    • Authors: A Shishir, MM Kamal, MAR Khokon, MR Islam, S Das
      Pages: 447 - 456
      Abstract: Compost tea, streptomycin and cupravit were evaluated against the Bacterial Leaf Blight diseases of rice cv. BR11 in two management approaches (preventive and curative) under field condition. The selected cultivar BR11 was cultivated in the field laboratory of the Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh during the period from July to December 2012. The field experiment was carried out with seven treatments in Randomized Complete Block Design (RCBD) and each was replicated thrice. The treatments were T0 = Control, T1= Compost tea as foliar spray 2 times (preventive) @ 1:5 w/v, T2= Compost tea as foliar spray 2 times (Curative) @ 1:5 w/v, T3 = Streptomycin as foliar spray 2 times (preventive) @1gm/10 L, T4 = Streptomycin as foliar spray 2 times (Curative) @ 1gm/10 L, T5 = Cupravit as foliar spray 2 times (preventive) @ 0.2%, T6 = Cupravit as foliar spray 2 times (Curative) @ 0.2%. Cupravit as foliar spray 2 times (Curative) @ 0.2% showed marked effect in reducing Bacterial Leaf Blight diseases of BR11 rice as well as enhancing yield and yield contributing characters. The effect of compost tea also produced similar effects on disease and yield of rice over control. Among the application options of different treatment, curative application provided better results than preventive under field condition.Bangladesh J. Agril. Res. 42(3): 447-456, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34503
      Issue No: Vol. 42, No. 3 (2017)
       
  • Genetic analysis of yield and yield contributing traits in boro rice
           (Oryza sativa L.) Over environments

    • Authors: K Priyanka, HK Jaiswal
      Pages: 457 - 466
      Abstract: Hayman’s component analysis was employed to estimate genetic components of variation for yield and yield related traits in boro rice. Nine diverse lines of boro rice were crossed in diallel mating design excluding reciprocals and all the parental lines along with their 36 crosses were evaluated in randomized block design over 3 seasons in 3 replication. Significant differences among genotypes were observed for all the traits over seasons. Component analysis indicated importance of both additive and dominance components. However, greater magnitude of dominance component than its corresponding additive component of variance exhibited greater role of dominance in the inheritance of these traits. The average degree of dominance was more than unity indicating overdominance for all the traits. Most of the traits exhibited low to moderate narrow sense heritability.Bangladesh J. Agril. Res. 42(3): 457-466, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34504
      Issue No: Vol. 42, No. 3 (2017)
       
  • Effect of bioslurry on transplanted aus rice under rainfed condition in
           Sylhet

    • Authors: MR Shaheb, MI Nazrul
      Pages: 467 - 474
      Abstract: An experiment was conducted in farmer’s field with the aim to evaluate the effect of integrated use of bioslurry and inorganic fertilizer on the agroeconomic performance of transplanted aus rice (t. aus) (cv. BRRIdhan42) in AEZ 20. The trial was laid out in a randomized complete block design with three replications. There were three treatments viz., T1: soil test based inorganic fertilizer dose for high yield goal (HYG), T2: cowdung (CD) slurry @ 5 t ha-1 with integrated plant nutrition system (IPNS) basis inorganic fertilizer dose for HYG and T3: Farmer’s practice (average of 20 farmers fertilizer dose). The highest mean grain yield (3.93 t ha-1) of t. aus rice was obtained from the treatment T2 followed by T1 (3.46 t ha-1). Gross return, gross margin and benefit cost ratio were also observed higher in T2. Therefore, fertilizer package NPKSZn @ 56-4-20-9-1 kg ha-1 + cow dung slurry @ 5 t ha-1 in IPNS approach might be helpful for getting higher grain yield of t. aus rice and maintaining sustainable soil health as well.Bangladesh J. Agril. Res. 42(3): 467-474, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34505
      Issue No: Vol. 42, No. 3 (2017)
       
  • Effect of drought stress on bio-chemical change and cell membrane
           stability of soybean genotypes

    • Authors: JA Chowdhury, MA Karim, QA Khaliq, AU Ahmed
      Pages: 475 - 485
      Abstract: An experiment was conducted in a venylhouse at the environmental stress site of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during September to December 2012 to study the effect of drought stress on proline content, soluble sugar content, chlorophyll content and cell membrane stability of soybean genotypes. Four studied genotypes viz., Shohag, BARI Soybean-6 and BD2331 (relatively stress tolerant) and BGM2026 (susceptible) were tested against two water regimes such as water stress and non-stress. Results indicated that due to drought stress there was an increase in proline content and soluble sugar content and decrease in chlorophyll a content, chlorophyll b content, total chlorophyll content, chlorophyll a/b ratio and cell membrane stability. Proline and soluble sugar showed more content in tolerant genotype than in susceptible ones. Chlorophyll reduction was most significant and cell membrane stability was found minimal in susceptible genotypes. From the result, genotype BGM2026 which recorded the lowest proline, soluble sugar content and highest chlorophyll reduction and cell membrane injury was considered as drought susceptible. The variety/genotype of soybean such as BARI Soybean-6, Shohag and BD2331 were more drought stress tolerant and better mechanisms of drought tolerance.Bangladesh J. Agril. Res. 42(3): 475-485, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34506
      Issue No: Vol. 42, No. 3 (2017)
       
  • Effect of salt and water stress on gas exchange, dry matter production and
           K+/NA+ ions selectivity in soybean

    • Authors: MSA Khan, MA Karim, MM Haque, AJMS Karim, MAK Mian
      Pages: 487 - 501
      Abstract: The experiment was conducted in a vinylhouse at the Banghabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh during January to May, 2012 to evaluate the effect of salt and water stress on gas exchange characters, dry matter production and K+/Na+ ions selectivity in three selected soybean genotypes, namely Galarsum, BD 2331 and BARI Soybean-6. The genotypes were exposed to six treatments viz. (i) control (tap water), (ii) water shortage (irrigation with 70% depletion of available soil water when leaf began to wilt at 10:00 am), (iii) 50 mM NaCl irrigation, (iv) 50 mM NaCl irrigation + water shortage, (v) 75 mM NaCl irrigation, and (vi) 75 mM NaCl irrigation + water shortage conditions. The results revealed that 75 mM NaCl salt + water stress treatment drastically reduced stomatal conductance, photosynthesis and transpiration rate irrespective of soybean genotypes. However, the genotype Galarsum showed minimum transpiritional water loss (1.45 mmol H2O m-2 s-1) and maximum photosynthesis (20.45 μmol CO2 m-2 s-1) as compared to BD 2331 and BARI Soybean-6 under 75 mM NaCl salt + water stress condition. Combined salt and water stress caused greater inhibition of shoot growth than either of the two in soybean. The shoot dry weights were decreased to 24.58, 23.00 and 21.57% of the control in Galarsum, BD 2331 and BARI Soybean-6, respectively at 75 mM NaCl salt + water stress. The genotype Galarsum accumulated higher amount of K+ (1.19%) and lower amount of Na+ ( 0.11%) in leaf tissue under 75 mM NaCl salt + water stress. Results indicated that the genotype Galarsum was more capable to cope with the high levels of salt under water stress condition than the other two genotypes.Bangladesh J. Agril. Res. 42(3): 487-501, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34507
      Issue No: Vol. 42, No. 3 (2017)
       
  • Mating, oviposition behaviour and biology of hogplum beetle

    • Authors: MMH Khan
      Pages: 503 - 508
      Abstract: Experiments were conducted to observe mating and oviposition behabiour as well as biology of hog-plum beetle. Results revealed that the average mating frequency, mating duration and mating interval were 11.2, 30.5 hours and 60.3 hours, respectively. The highest number of eggs per clusters was on leaf rachis followed by young stem. The mean number of eggs per cluster was 15.70 while the length and breadth of an egg was 1.95 mm and 0.60 mm, respectively. The mean duration of 1st, 2nd, 3rd and 4th instar larvae were 3.80, 3.40, 3.70 and 3.00 days, respectively. The mean pupal period was 22.74 days. The female beetle lived longer (48.30 days) than the male (45.10 days). The size of female beetle was larger (15.30 mm) than male (11.96 mm). The mean length of antennae was 7.42 mm. The length of fore, mid and hind legs were 9.20, 9.50 and 11.70 mm, respectively. Hind wings were larger (16.10 mm length and 7.85 mm breadth) than fore wings (12.38 mm length and 5.30 mm breadth).Bangladesh J. Agril. Res. 42(3): 503-508, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34508
      Issue No: Vol. 42, No. 3 (2017)
       
  • System productivity, nutrient uptake and nutrient balance in the
           wheat-mungbean-t. Aman rice cropping system

    • Authors: MA Quddus, JΑ Mian, MA Hashem, HM Naser, MA Hossain
      Pages: 509 - 520
      Abstract: System productivity, nutrient uptake and apparent nutrient balance in the wheatmungbean- T. aman rice cropping system was studied. The experiment comprised four treatments-absolute nutrient control (T1); farmer’s practice (T2); AEZ basis fertilizer application (T3) and soil test basis fertlizer application (T4). The treatments were compared in a RCBD with three replications over two consecutive years, 2008-09 and 2009-10. The experiment was conducted in Chhiata clay loam soil. The average yields of wheat, mungbean and T. aman ranged from 1415 to 3096 kg ha-1, 1020 to 1463 kg ha-1 and 2999 to 4282 kg ha- 1, respectively showing T4 as the best treatment. The same treatment (T4) demonstrated the highest nutrient uptake by the crops. The apparent balance of N and K (difference between nutrient uptake and nutrient addition) was negative; however it was less negative for T4 treatment. The P balance was positive for all the treatment except T1. Positive S balance was observed in T3 and T4 but negative in absolute control and farmer’s practice. Zinc and B balance was also positive in case of T3 and T4, but negative for T1 and T2 except B. The study suggests soil test basis fertlizer recommendation for the wheatmungbean- T. aman rice cropping system.Bangladesh J. Agril. Res. 42(3): 509-520, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34510
      Issue No: Vol. 42, No. 3 (2017)
       
  • Determination of optimum and economic doses of fertilizers for rice
           production in saline and charlands ecosystem

    • Authors: MN Islam, PK Saha, S Islam
      Pages: 521 - 529
      Abstract: On-farm experiment was carried out for four consecutive seasons: Boro (dry season) 2011-12, Transplanted Aman (T. Aman, wet season) 2012, Boro 2012- 13 and T. Aman 2013 at the farmer’s field in Londonipara, Sonagazi, Feni to develop fertilizer recommendation for rice-based cropping systems in saline and charland ecosystem in Bangladesh. The experiments were designed with eight treatments and laid out in randomized complete block design (RCBD) with three replications. The treatment combinations were: T1 = 100% NPKSZn (STB), T2 = T1 + 25% N, T3 = T1 + 25% NP, T4 = T1 + 25% NK, T5 = T1 + 25% PK, T6 = T1 + 25% NPK, T7 = 75% of T1 and T8 = Absolute control. Results indicated that application of different fertilizers significantly affected the grain yield at all of the seasons. In Boro 2011-12, the highest grain yield was found in treatment T1 (100% STB) while T3 (T1 + 25% NP) gave highest grain yield in Boro 2012-13. Statistically identical yield was observed in Boro 2011-12 with all treatments except control (T8). Highest grain yield was found with T6 (T1 + 25% NPK) treatments in both of T. Aman 2012 and 2013 seasons. Annual straw yield was found more in T6 (T1 + 25% NPK) treatment. All the treatment combinations gave significantly higher yield over the control in all seasons. However, on the basis of yield performance, economic analysis and nutrient absorption, the treatment T6 = T1 + 25% NPK (N225P30K17.5S15Zn4 for Boro and N121P15K9S10Zn3 for T. Aman) performed the best among the treatments.Bangladesh J. Agril. Res. 42(3): 521-529, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34511
      Issue No: Vol. 42, No. 3 (2017)
       
  • Sequential application of bio-pesticide, botanical and chemical
           insecticide to manage aphid and pod borer attacking yard long bean

    • Authors: MR Amin, AA Tarif, MM Rahman, MM Hossain, F Ge
      Pages: 531 - 538
      Abstract: Present study evaluated the effect of sequential application of a bio-pesticide (Bacillus thuringiensis subsp. Kurstaki) (Bt), a botanical (neem oil) and a chemical insecticide (cypermethrin 25EC) as well as cypermethrin 25EC alone in the management of aphid (Aphis craccivora) and pod borer (Maruca vitrata) attacking yard long bean (Vigna unguiculata sesquipedalis) in the field. In each treatment Bt, neem oil and cypermethrin were applied in alternative sequence as well as cypermethrin alone at 07 days intervals. All the treatments reduced aphid population and flower infestation after 24, 48 and 72h of treatment compared to untreated control. Aphid population reduction by the treatments over control was ranged from 34.4 to 71.9%, and the treatment with cypermethrin alone had the lowest abundance of aphid and flower infestation. The Bt followed by neem oil and cypermethrin significantly reduced the pod infestation by pod borer and increased yield (38.9–41.4%) over control with BCR: 1.85-2.16. Use of cypermethrin alone was most effective and showed the lowest pod infestation and revealed the increased yield over control (47.7%) with BCR 4.70. Considering the hazardous affect of cypermethrin alone, its application followed by bio-pesticide and botanical sequentially would be promising components for integrated pest management strategies against aphid and pod borer attacking yard long bean.Bangladesh J. Agril. Res. 42(3): 531-538, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34512
      Issue No: Vol. 42, No. 3 (2017)
       
  • Management of brinjal shoot and fruit borer leucinodes orbonalis guenee
           using different approaches

    • Authors: MAH Chowdhury, MZ Alam, MS Hossain, SJ Suh, YJ Kwon
      Pages: 539 - 548
      Abstract: The present study was conducted during October 2014 to June 2015 in the farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur to find out the most effective management option (s) against brinjal shoot and fruit borer (BSFB) with 6 treatments namely, Beauveria bassiana, 1´109 CFU @ g l-1, Bioneem 0.3 EC (Azadirachtin) @ 1.5 ml l-1, Tracer 45 SC (Spinosad) @ 0.4 ml l-1, Vertimec 1.8 EC (Abamectin) @ 1.2 ml l-1 of water, Mechanical control (hand picking) with clean cultivation and untreated control. Results revealed that shoot infestation at pre-fruiting stage was the lowest in Bioneem 0.3 EC (4.34%) and at fruiting stage in Tracer 45 SC treated plot (7.75%) and the highest was in untreated control plot (17.94% at pre-fruiting stage and 39.46 at fruiting stage). The lowest fruit infestation by BSFB was obtained with Tracer 45 SC (8.16% n/n and 10.0% w/w) followed by B. bassiana, 1´109 CFU (23.23% n/n and 18.27% w/w) and the highest infestation was observed under untreated control plot (48.59% n/n and 32.09% w/w). Percent reduction of infested fruit by number (83.21%) and weight (68.84%) over untreated control was higher in Tracer 45 SC treated plot resulting significantly higher marketable yield. Therefore, the significant highest marketable yield (34.39 t ha-1) was harvested in the plot treated with Tracer 45 SC followed by 22.78 t ha-1 with B. bassiana, 1´109 CFU and 19.26 t ha-1 from Vertimec 1.8 EC treated plot. The highest benefit cost ratio of 3.05 was obtained from Tracer 45 SC followed by 2.93 in B. bassiana, 1´109 CFU and 2.89 with Vertimec 1.8 EC sprayed plot.Bangladesh J. Agril. Res. 42(3): 539-548, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34513
      Issue No: Vol. 42, No. 3 (2017)
       
  • Economics of maize grain storage at household level in Chuadanga district
           of Bangladesh

    • Authors: ME Baksh, F Rossi, MA Momin, P Hajong, TP Tiwari
      Pages: 549 - 561
      Abstract: There is a common perception among farmers and concerned professionals that maize grain cannot be stored like paddy or other cereals in conventional rural storage devices. As such, farmers generally sell their produce at harvest for any price offered to avoid quality deterioration and losing total return after harvest, which leads to lower profitability. To counter this situation, in the recent years, some progressive farmers at Chuadanga district (one of the concentrated maize growing area of Bangladesh) have been storing their maize grain within their household by using traditional bamboo granaries (Golas in the Bengali language) with the aim to capture higher future prices, while these Golas are traditionally used for storing paddy. Through the Cereal Systems Initiative for South Asia in Bangladesh (CSISA-BD) project, the International Maize and Wheat Improvement Center (CIMMYT) also helps further more to disseminate this technologies in the Chuadanga area. Given the uptake of this profitincreasing strategy by farmers, it is essential to document and evaluate the knowledge learned in order to inform scale-out efforts designed to reach farmers in other areas. A survey was conducted to assess maize grain storage systems in use at the household level in Chuadanga District farmers, and to estimate the overall profitability of storing maize grain. The survey results showed that approximately 80% of the total maize grain produced in 2014 (5.93 t/ha, on average) by sampled farmers was stored; most households employed Gola (62%) and/or jute sacks (55%), among other options. Golas were their first preference, followed by storage systems that pair polythene bags with (respectively) jute sacks and plastic bags, and then several other options. On average, farmers stored their maize grain 25.6 weeks (2014), 21 weeks (2013), and 20.9 weeks (2012) while realizing a price benefit of BDT 2.16/kg, BDT 4.72/kg, and BDT 5.35/kg in the respective years. Despite the fact that average storage costs and average quantities stored both varied by less than 7% between 2012 and 2014, the profit per unit (100 kg) and profit per household was significantly less in 2014 (BDT 10,161) than in 2013(BDT 24,445) and 2012 (BDT 30,255), due to the much lower price differential obtained from maize grain storage in 2014. Examination of the total unit cost of storage reveals that the Golas were the most profitable storage system employed by the farmers and its profits helps farmers to improve their livelihood. Proper dissemination of these practices (storing and Gola) could be helpful for the farmers at the intensive maize growing area. Limitation of drying space and higher labour cost were the two major problems faced by the farmers, introducing quick-drying devices (flatbed dryers) can solve both the problems. It can be established either by local service providers, or farmers organizing themselves for collective ownership of such equipment.Bangladesh J. Agril. Res. 42(3): 549-561, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34514
      Issue No: Vol. 42, No. 3 (2017)
       
  • Effect of some new generation insecticides on the population abundance of
           aphid and different beneficial insects in mustard crop

    • Authors: NK Dutta, SN Alam, MA Sarkar, AKMZ Rahman, YJ Kwon
      Pages: 563 - 570
      Abstract: The present study evaluated the efficacy of some new generation insecticides namely Clothianidin 48 SC, Fenpyroximate 5 SC, Pyridaben 20 WP and Methoxyphenozide 24 SC along with a synthetic pyrethroid insecticide, Fenpropathrin 20 EC against mustard aphid and their effects on beneficial insects i.e. syrphid flies and foraging honeybees during 2015 - 2016 in Bangladesh Agricultural Research Institute, Gazipur, Bangladesh. Tested six treatments were: Clothianidin 48 SC 1ml l-1, Fenpyroximate 5 SC 0.25 ml l-1, Pyridaben 20 WP 1g l-1, Methoxyphenozide 24 SC 1ml l-1 , Fenpropathrin 20 EC 1ml l-1 and an untreated control, replicated three times in RCBD. It was found that, Methoxyphenozide 24 SC was found to be the most effective against aphid offering lower aphid population (1.42/ top 10 cm central twig) at 7 days after spraying (DAS) which was statistically identical to Clothianidin 48 SC (1.50/top 10 cm central twig). Among the insecticides, Methoxyphenozide 24 SC was also found to be safer to the populations of syrphid flies revealing flight activity of 6.85 adults (plot/5 min) and honeybees of 8.82 workers (plot/5 min), respectively at 7 DAS. Whereas, Clothianidin 48 SC and Pyridaben 25 WP treated plots were found to be highly toxic to these beneficial insects. Consequently, the highest yield was obtained from Methoxyphenozide 24 SC (1.55 t/ha) followed by Fenpyroximate 5 SC (1.42 t/ha) treated plots.Bangladesh J. Agril. Res. 42(3): 563-570, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34515
      Issue No: Vol. 42, No. 3 (2017)
       
  • Character association and path co-efficient analysis in wheat (Triticum
           aestivum L.)

    • Authors: MF Amin, M Hasan, NCD Barma, MA Rahman, MM Rahman
      Pages: 571 - 588
      Abstract: The experiment was carried out with 50 wheat lines to study their mean, range, cv (%), correlation co- efficient, and path co- efficient considering 14 different morphological characters at the experimental field of Regional Wheat Research Centre (RWRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during December 2010 to April 2011. Significant variation was observed among the genotypes for all characters studied. In general, genotypic correlations were higher than the phenotypic correlations. It indicates that there was an inherent association among them which was adversely influenced by the environment. The correlation coefficients showed that, seed yield was negatively and significantly correlated with days to heading (DTH), plant height (PHT), days to anthesis (DTA), days to physiological maturity (DPM), and canopy temperature at anthesis stage (CTanth.) but only negatively correlated with canopy temperature at vegetative stage (CTveg.), canopy temperature at grain filling stage (CTgf.), spikelets per spike both genotypically and phenotypically and grain per spike showed genotypically negative correlation. Path analysis showed that plant height (PHT), days to physiological maturity (DPM), canopy temperature at grain filling stage (CTgf.), and thousand grain weight (TGW) influenced seed yield directly in positive direction but days to heading (DTH), days to anthesis (DTA), grain filling duration (GFD), grain filling rate (GFR), Chlorophyll content at anthesis stage (CHLA), canopy temperature at vegetative stage (CTveg.), canopy temperature at anthesis stage (CTanth.), spikelets per spike, and grains per spike had negative direct effect on seed yield. Considering analytical findings of correlation co-efficient, path co-efficient analysis and field performance, the genotypes G 3, G 10, G 11, G 12, G13, G 21, G 29, G 35, G 38, G 40, G 46 and G 48 were found suitable for future breeding programme.Bangladesh J. Agril. Res. 42(3): 571-588, September 2017
      PubDate: 2017-11-09
      DOI: 10.3329/bjar.v42i3.34516
      Issue No: Vol. 42, No. 3 (2017)
       
 
 
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