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Journal Cover   Bangladesh Journal of Agricultural Research
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 0258-7122
   Published by Bangladesh Journals Online Homepage  [101 journals]
  • Study on drying kinetics of summer onion

    • Authors: Md Masud Alam, Md Nurul Islam, Md Nazrul Islam
      Abstract: The present study was concerned with the kinetics of drying of summer onion. Drying was done in a mechanical dryer at constant air flow using blanched and unblanched onion with variable temperature (52, 60 and 680C) and thickness (3, 5 and 7 mm). Drying rate was increased with increase of temperature and decreased with the increase in thickness in blanched and unblanched onion. Blanched onion showed higher drying rate than unblanched onion. Drying rate constant and thickness can be expressed as power low equations. The value of index “n” were found to be 1.277 and 0.845 for onion indicating that the external resistance to mass transfer was highly significant. The effect of temperature on diffusion co-efficient follows an Arrhenius type relationship. The activation energy (Ea) for diffusion of water was found 5.781 Kcal/g-mole for unblanched and 2.46 Kcal/g-mole for blanched onion when onions were dried in mechanical dryer.
      DOI : Bangladesh J. Agril. Res. 39(4): 661-673, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Evaluation of inbred lines of maize (Zea mays L.) through line ×
           tester method

    • Authors: MN Amin, M Amiruzzaman, A Ahmed, MR Ali
      Abstract: Maize inbred lines were evaluated by using line × tester method involving 11 lines and 3 testers for grain yield and its components through estimation of general combining ability (gca) and specific combining ability (sca) effects. Highly significant genotypic differences were observed indicated wide range of variability present among the genotypes. The crosses with high sca effect for grain yield were evolved from high × low general combiner parents which reveled additive × dominance type of gene action. The cross combinations 9MS4-1 × L22, 9MS4-1 × L486, 9MS4-2 × L431, 9MS4-11 × L486 and 9MS4- 15 × L431 with high positive sca effect having high mean values might be used for obtaining high yielding hybrids. The information on the nature of gene action with respective variety and characters might be used depending on the breeding objectives.
      DOI : Bangladesh J. Agril. Res. 39(4): 675-683, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Tuber yield and nutrient balance of potato (Solanum tuberosum L.)
           Cultivation as influenced by different nutrients management under AEZ-28

    • Authors: MAHS Jahan, MAR Sarkar, NCD Barma, MNA Mondal, MNS Ferdousi
      Abstract: A field experiment was conducted at Regional Wheat Research Centre of the Bangladesh Agricultural Research Institute, Joydebpur, Gazipur for 2 consecutive years during 2006-07 and 2007-08. The objectives were to find out the optimum nutrient management practice on tuber yield, nutrient balance and economics of potato cultivation. Twelve nutrient management treatments were tested in a randomized complete block design with 3 replications. Treatments were T1=HYG (0-198-44-194-24-6-1.2), T2=MYG (0-140-34-138-18-4.5-0.9), T3=IPNS (10000-168-38-170-18-6-1.2), T4=STB (0-171-40-164-22-5-1), T5=FP (0-97-16-91-0-0-0), T6=CON (0-0-0-0-0-0-0), T7=HYG+CRI, T8=MYG+CRI, T9=IPNS+CRI, T10=STB+CRI, T11=FP+CRI, T12=CON+CRI kg ha-1 CDNPKSZnB for potato. The highest tuber yield of potato was obtained from STB+CRI (27.64 t ha-1) followed by IPNS+CRI (27.35 t ha-1), STB (27.10 t ha-1), IPNS (26.83 t ha-1), HYG+CRI (26.52 t ha-1) and HYG (26.10 t ha-1) in 2006- 07. Similar trend was found in 2007-08. The highest tuber yield and yield contributing parameters were noticed in CRI plots than without CRI. Except N, remaining nutrient balance like P K S Zn and B were found positive in case of HYG, MYG, IPNS and STB along with or without CRI nutrient managements. The balance was found almost negative in case of FP and CON. The highest BCR was observed in STB+CRI (3.96) followed by STB (3.93), IPNS+CRI (3.76), and IPNS (3.74). The higher gross return (Tk. 283331 ha-1) and also gross margin (Tk. 211761 ha-1) was observed from the same treatment.
      DOI : Bangladesh J. Agril. Res. 39(4): 641-659, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Effect of thickness of polythene bag on seed quality of soybean

    • Authors: MR Ali, MM Rahman, KU Ahammad
      Abstract: An experiment was conducted at the Seed Laboratory of Regional Agricultural Research Station (RARS), Jamalpur during the period from May to November 2010 to study the effect of thickness of polythene bags on quality of soybean seed during storage. Seven levels of thickness of polythene bags viz. i) 0.02mm, ii) 0.03mm, iii) 0.04mm, iv) 0.05mm, v) 0.06mm, vi) 0.07mm and vii) 0.08mm were include as treatment in the trial. Seed moisture content, germination percentage, vigor and seedling dry matter weight were taken during May to November 2010 at two month intervals. Results showed that during the storage period the lowest seed moisture content and highest germination percentage, vigor index, seedling dry matter weight and field emergence were found for seed stored in 0.08mm thickness polythene bags. The germination of seed at two months after storage ranged between 76% to 95.3% and that was between 0% and 90.7% after six months of storage under ambient room condition. Soybean seed could be stored safely at ambient condition with more than 80% germination for six months by keeping them in polythene bags having thickness between 0.03mm to 0.08mm with 8% seed moisture content.
      DOI : Bangladesh J. Agril. Res. 39(4): 709-716, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Genetic divergence study in salinity stress tolerant maize (Zea mays L.)

    • Authors: A Biswas, U Sarker, BR Banik, MM Rohman, MA Khaleque Mian
      Abstract: The study was conducted to investigate the genetic diversity of some maize inbreds under salinity stress condition using Mahalanobis’s statistic (D2) and principal component analysis. Analysis of variance showed significant difference for all the characters. Results of multivariate analysis revealed that seventeen inbred lines formed five clusters at 12 dS level of salinity. The highest intra-cluster distance was recorded in cluster IV containing three genotypes and the lowest was in cluster V having one genotype. The inter cluster D2 values revealed maximum distance among the clusters. The highest inter cluster distance was observed between clusters IV & III and lowest was between V & I. Cluster IV had the highest cluster means for cob height, tassel length, cob length, SPAD value, number of seeds/cob, 100 seed weight, cob diameter and grain yield per plant. Considering cluster distance, inter-genotypic distance, cluster mean and other agronomic performances the genotypes CZ29, CZ33 and P43 from cluster IV and E135, E158, E169, P29 and P45 from cluster III may be considered as better parents for future hybridization programs to obtain desirable segregates in respect of different yield and yield contributing characters under salinity stress.
      DOI : Bangladesh J. Agril. Res. 39(4): 621-630, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Effect of nitrogen, phosphorus, potassium and sulphur on the yield of

    • Authors: Shamima Nasreen, AM Kamal, MA Siddiky, RP Rannu, MS Islam
      Abstract: The experiment was conducted at the research field of Regional Horticulture Research Station, Chapai Nawabganj during 2010-11, 2011-12 and 2012-13 to find out the proper combination of fertilizer nutrients (N, P, K and S) in presence of organic manure for obtaining higher yield of mango (var. BARI Aam-1). The treatments were native nutrient i.e. control (T1), N360P80K150S50 (T2), N560P120K200S70 (T3), N760P160K250S90 (T4), N960P200K300S110 (T5), and N1100P300K500S120 i.e. farmers practice (T6) g/tree/year. In addition, 20 kg cowdung/tree was used as blanket dose. Number of fruits/tree, individual fruit weight, fruit size, stone weight, peel weight, TSS content and yield of mango varied significantly due to variations of nutrients in all the years. The highest yield and yield attributes were recorded under treatment N960P200K300S110 g/tree and it was statistically identical with N760P160K250S90 g/tree. The lowest yield was obtained from untreated control plot (native nutrient). The yield benefit for the best treatment (T5) over the control was 86% in 2010-11, 64% in 2011-12 and 73% in 2012-13. The highest gross margin (Tk 2509/tree in 2010-11, Tk 2651/tree in 2011-12 and Tk 2478/tree in 2012-13) and marginal rate of return (2375% in 2010-11, 2225% in 2011-12 and 2300% in 2012-13) was also obtained from the same treatment. Three years’ study revealed that application of N960P200K300S110 g/tree along with a blanket dose of 20 kg cowdung/tree appears to be the best treatment and economically optimum for achieving higher yield of mango in Chapai Nawabganj region.
      DOI : Bangladesh J. Agril. Res. 39(4): 631-640, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Screening of chickpea genotypes against salinity stress

    • Authors: Md Shaheenuzzamn
      Abstract: The experiment was conducted during the period from December 13, 2010 to May 13, 2011 at the Crop Physiology Lab, Agronomy Division, Bangladesh Agricultural Research Institute (BARI). In Hoagland culture solution, 70 (Seventy) genotypes of chickpea were tested during germination and seedling stage at 0, 5, 10 and 15 dS/m salinity levels. Distilled water (0 dS/m) was used as a control. Germination percentage (GP), relative germination percentage (RGP), germination rate (GR), relative germination rate (RGR), root length (RL), relative root length (RRL), shoot length (SL), relative shoot length (RSL), vigor index, total dry matter (TDM) and relative total dry matter (RTDM) were found to be affected by salinity. Genotypes BD-6061, BD-6066 BD-6071, BD- 6060, BD-6067 and BD 6078 performed better at 10 dS/m and survived up to 15 days after germination as evaluated on the basis of germination percentage (GP), relative germination percentage (RGP), total dry matter (TDM) and relative total dry matter (RTDM). These genotypes could be selected for further investigation under pot culture and field evaluation in the saline area.
      DOI : Bangladesh J. Agril. Res. 39(4): 605-619, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Effect of zinc and boron on yield and yield contributing characters of
           lentil in low ganges river floodplain soil at Madaripur, Bangladesh

    • Authors: MA Quddus, HM Naser, MA Hossain, M Abul Hossain
      Abstract: A study was conducted in Calcareous Low Ganges River Floodplain Soil (AEZ 12) at Regional Pulses Research (RPRS), Madaripur during the Rabi season of 2010-12.The objectives were to evaluate the effect of Zinc (Zn) and Boron (B) on the yield and yield contributing characters of lentil (Lens culinaris Medic) and to estimate the optimum dose of Zn and B for yield maximization. There were 16 treatment combinations comprising four levels each of Zinc (0, 1.0, 2.0 and 3.0 kg/ha) and Boron (0, 0.5, 1.0 and 1.5 kg/ha) along with a blanket dose of N20 P16 K30 S10 kg/ha were used. The treatments were arranged viz. T1= Zn0B0; T2= Zn0B0.5; T3= Zn0B1.0; T4= Zn0B1.5; T5= Zn1.0B0; T6= Zn1.0B0.5; T7= Zn1.0B1.0; T8= Zn1.0B1.5; T9= Zn2.0B0; T10= Zn2.0B0.5; T11= Zn2.0B1.0; T12= Zn2.0B1.5; T13= Zn3.0B0; T14= Zn3.0B0.5; T15= Zn3.0B1.0 and T16= Zn3.0B1.5. The experiment was laid out in RCBD with three replications. Results showed that the combination of Zn3.0B1.5 produced significantly higher seed yield (1156 kg/ha). The lowest seed yield (844 kg/ha) was found in control (Zn0B0) combination. The combined application of zinc and boron were superior to their single application. Therefore, the combination of Zn3.0B1.5 may be considered as suitable dose for lentil cultivation in Bangladesh. But from regression analysis, the optimum treatment combination was Zn2.85B1.44 for Madaripur, Bangladesh.
      DOI : Bangladesh J. Agril. Res. 39(4): 591-603, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Intercropping chili with sweet gourd at varying plant population

    • Authors: MS Alom, MN Islam, M Biswas, AHMM Rahman Talukdar, MAT Masud
      Abstract: The experiment was conducted at the experiment stations of Bangladesh Agricultural Research Institute (BARI) at Joydebpur and Jamalpur during two consecutive seasons of November 2010 to June 2012 to find out the appropriate plant population of chili (var. Manikgonj local at Joydebpur and Jamalpur local at Jamalpur ) for intercropping with sweet gourd (var. BARI Sweet gourd 2) for higher productivity and economic return. The treatments were : T1= Sole sweet gourd (2.0 m x 2.0 m), T2=Sole chili (50 cm x 40 cm), T3= Sweet gourd (100%) + chili (100%), T4= Sweet gourd (100%) + chili (60%), T5= Sweet gourd (100%) +chili (50%) and T6= Sweet gourd (100%) + Chili (40%). Averaged over the years, fruit yield of sweet gourd was reduced significantly when intercropping with more than 50% chili. Intercropping sweet gourd with chili combination (100%) + chili (40%) gave the highest sweet gourd equivalent yield (35.74 t/ha and 17.95 t/ha), gross return (Tk. 357400/ha and Tk. 179500/ha), gross margin (Tk. 274346/ha and Tk.124600/ha) and benefit cost ratio (4.30 and 3.27), respectively at Joydebpur and Jamalpur. The maximum land equivalent ratio (1.52 at Joydebpur and 1.56 at Jamalpur) was also obtained from sweet gourd (100%) + chili (40%) intercropping system. The results revealed that 40% chili population (20,000/ha) might be optimum for intercropping with sweet gourd (100%) for higher productivity and economic return.
      DOI : Bangladesh J. Agril. Res. 39(4): 579-589, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Feasibility of intercropping leafy vegetables and legumes with brinjal

    • Authors: MR Islam, MT Rahman, MF Hossain, N Ara
      Abstract: An experiment was conducted during 2010 and 2011 to find out the suitable crop combination for increasing total productivity, return and maximize land utilization through intercropping system. Six treatments viz. Brinjal 100% + Red amaranth 100%, Brinjal 100% + Leaf amaranth 100%, Brinjal 100% + Jute as patshak 100%, Brinjal 100% + Mungbean 60%, Brinjal 100% + Blackgram 60% and sole of base crops (brinjal) were used in the study. Results showed that different intercropping combination did not influenced yield and yield contributing characters of brinjal. The yield of brinjal comparatively lower in intercropping but total productivity increased due to additional yield of leafy vegetables and legumes. The increases in total productivity in terms of brinjal equivalent yield (BEY) was 8.80 to 26.67 t/ha in intercrop combination compared to base crop. All the intercropping combinations were higher in terms of brinjal equivalent yield, gross return and benefit cost ratio (BCR) over sole crops. Among the intercropping combinations, Brinjal 100% (100 cm × 75 cm) + Mungbean 60% (three rows mungbean in between brinjal rows maintained 30 cm apart rows with continuous seeding) was the most feasible and profitable intercropping system in respect of brinjal equivalent yield (20.85 t/ha), gross return (Tk.312750/ha), gross margin (Tk.212693/ha) and benefit cost ratio (3.13).
      DOI : Bangladesh J. Agril. Res. 39(4): 685-692, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Effect of seed priming on maize (Zea mays L.) seedling emergence under
           different sowing dates

    • Authors: MM Rahman, KU Ahammad, M Ahmed
      Abstract: The experiment was carried out at the research field of Regional Agricultural Research Station, Jessore during 2009-10 and 2010-2011 to find out the effect of priming and ambient temperatures due to different sowing dates on emergence of maize seedlings. The experiment consisted of two priming methods viz., i) Priming, ii) Non-priming, and ten sowing dates viz., i) 15 November, ii) 30 November, iii) 15 December iv) 30 December v) 14 January vi) 29 January vii) 13 February viii) 28 February, ix) 15 March, and x) 30 March. The experiment was laid out in a randomized complete block design with three replications. Results showed that germination percentage, germination index, mean germination time and dry matter/plant were influenced significantly by priming. The highest germination percentage, germination index, dry matter/plant and lowest mean germination time were recorded from primed seed sown in March followed by February and November sowings but those were very poor in December and January sowings. So, primed seeds should be sown in November and February for better stand establishment of maize.
      DOI : Bangladesh J. Agril. Res. 39(4): 693-707, December 2014
      PubDate: 2015-03-12
      Issue No: Vol. 39 (2015)
  • Molecular identification of parasitoid, Encarsia formosa gahan in Bemisia
           tabaci (Gennadius) and determination of its secondary endosymbionts

    • Authors: SMH Jahan, KY Lee, MIA Howlader, HM Bashar, GN Hasan
      Abstract: In this study two pairs of primers based on mitochondrial cytochrome oxidase subunit 1 (mtCOI) region and 28S ribosomal RNA (rRNA) gene region were used for identifying very tiny and morphologically indistinguishable parasitoid Encarsia formosa (Gahan) which are specific to this insect. The fragment amplified by these primer pairs were 860 and 650 bp in length. Species specificity test showed that all E. formosa specimens were detected with no cross reactions with other aphelinid species, including E. sophia (Girault & Dodd), E. luteola, E. Inaron and E. Nigricephala. Using phylogenetic cladogram by the sequences analysis of both mtCOI and 28S rRNA genes could be detected in E. formosa accurately in all replicates. Cardinium and Wolbachia secondary endosymbiont were also detected in E. Formosa used by PCR amplification as well as sequence analysis of 16S-23S rDNA gene region. The molecular technique developed here would be useful for rapid and precise species identification, determination of the host spectrum and more effective utilization of E. formosa. This research work has been performed from January 2011 to June 2012 at the insect molecular physiology lab in the Republic of Korea.
      DOI : Bangladesh J. Agril. Res. 39(4): 563-578, December 2014
      PubDate: 2015-03-11
      Issue No: Vol. 39 (2015)
  • Multivariate analysis in yellow inbred lines of Maize (Zea mays L.)

    • Authors: M Amiruzzaman, MN Amin, M Quadir, MH Rashid
      Abstract: Twenty five yellow inbred lines of normal maize were evaluated for eleven parameters to study the genetic divergence using Mahalonabis’s D2 and Rao ’s canonical variate analysis. The twenty five inbreds fell into five distinct clusters. The intra-cluster distance in all the five clusters was more or less low, indicating the genotypes within the same clusters were closely related. The highest intercluster distance was observed between cluster I and VI and the lowest between the cluster II and III. The cluster IV and V each contained the highest number of genotypes. Cluster V showed the highest mean values for kernel yield and all the yield contributing traits except 1000-kernel weight and cluster II had the lowest mean values for plant and ear height and maturity characters. Days to silking, ear length, number of kernels/row, 1000-kernel weight and kernel yield showed maximum contribution towards total divergence among different characters. Based on medium to high inter-cluster distances, per se performances and desirable traits, fourteen yellow inbred lines viz. BIL 77, BIL 97, CML 287, CML 470, CML 480, CML 486, CZ 2370-22-2, CZ 2370-24-3, CZ 2370-28-2, CZ 23 70-31-3, IPB 911-2, IPB 911-22, IPB 911-36 and IPB 911-50 were selected for future hybridization program. Crossing between these genotypes have the chance to obtain higher heterosis with high performing crosses.
      DOI : Bangladesh J. Agril. Res. 39(4): 553-561, December 2014
      PubDate: 2015-03-11
      Issue No: Vol. 39 (2015)
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