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Journal of the Bangladesh Agricultural University
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1810-3030 - ISSN (Online) 2408-8684
Published by Bangladesh Journals Online Homepage  [108 journals]
  • Alternate wetting and drying (AWD) technology: A way to reduce irrigation
           cost and ensure higher yields of Boro rice

    • Authors: Mrinmoy Guha Neogi, AKM Salah Uddin, M Taj Uddin, Muhammad Abdul Hamid
      Pages: 1 - 4
      Abstract: Massive extraction of groundwater for boro rice is the main cause of declining groundwater tables, especially in Rangpur Division, which is now a burning issue at the national level. It is now scientifically proven that rice is not a water-loving plant, but rather a water-tolerant plant. AWD can save water and energy, where both farmers and pump-owners can save around 30% of their irrigation water requirements. In Bangladesh around 4.8 million hectares of land are brought under irrigated boro rice where AWD technology can be utilized. With introduction of AWD technology, a savings of electricity costs equivalent to 5 billion Tk. or fuel cost equivalent to 7 billion Tk. will be incurred at the national level. Hence, the implementation of AWD technology will have major impacts at the farm and national levels, which can reduce irrigation cost significantly, thus saving foreign currency, as well as reducing excessive use of ground water.J. Bangladesh Agril. Univ. 16(1): 1-4, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36471
      Issue No: Vol. 16, No. 1 (2018)
       
  • Effect of age of seedlings at staggered transplanting and weed management
           on the growth and yield of aromatic Boro rice (cv. BRRI dhan50)

    • Authors: Tama Sinha, Swapan Kumar Paul, Abdur Rahman Sarkar
      Pages: 5 - 11
      Abstract: An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during December 2015 to May 2016 to study the effect of age of seedlings at staggered transplanting and weed management on the growth and yield of aromatic Boro rice (cv. BRRI dhan50). The experiment comprised four seedling ages at staggered transplanting viz. 30, 45, 60 and 75-day old seedlings with five different weed management treatments viz. unweeded controls, two hand weeding at 20 and 35 DAT (days after transplanting), pre-emergence herbicide  (Pendimethaiin, Panida 33EC) applied at 3 DAT  + one hand weeding at 35 DAT, post-emergence herbicide (Penoxsulam, Granite 240 SC) applied at 12 DAT  + one hand weeding at 35 DAT, pre-emergence herbicide (Panida 33 EC) applied at 3 DAT + post-emergence herbicide (Granite 240 SC) applied at 12 DAT. It was observed that the experiment was laid out in a randomized complete block design with three replications. The highest plant height and total dry matter hill–1 were recorded in 30-day old seedlings with pre-emergence herbicide (Panida 33EC) applied at 3 DAT + post-emergence herbicide (Granite 240 SC) applied at 12 DAT. Younger seedlings (30-days old) produced the highest number of total tillers hill–1 (11.08), effective tillers hill–1 (8.47), grains panicle–1 (80.76) and grain yield (3.94 t ha–1) compared to aged seedlings at staggered transplanting. In case of weed management, pre-emergence herbicide (Panida 33EC) applied at 3 DAT + post-emergence herbicide (Granite 240 SC) applied at 12 DAT produced the highest number of effective tillers hill-1 (8.89), grains panicle–1 (81.66), 1000-grain weight (18.44 g), grain yield (4.47 t ha–1) and straw yield (5.13 t ha–1). Grain yield was reduced by 59.82% in unweeded control compared to pre-emergence herbicide (Panida 33EC) applied at 3 DAT + post-emergence herbicide (Granite 240 SC) applied at 12 DAT. In interaction, 30-day old seedlings combined with pre-emergence herbicide (Panida 33 EC) applied at 3 DAT + post-emergence herbicide (Granite 240 SC) applied at 12 DAT produced the highest effective tillers hill–1 (9.58), grains panicle-1 (89.47), 1000-grain weight (18.93g), grain yield (5.31 t ha–1) and straw yield (5.75 t ha–1). Therefore, 60-day old seedlings at staggered transplanting with pre-emergence herbicide (Panida 33EC) applied at 3DAT + post-emergence herbicide (Granite 240 SC) applied at 12 DAT appears as the promising technique for aromatic Boro rice cultivation.J. Bangladesh Agril. Univ. 16(1): 5-11, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36472
      Issue No: Vol. 16, No. 1 (2018)
       
  • Effect of nitrogen fertilizer and weed management on the yield of
           transplant aman rice

    • Authors: Jyoti Adhikari, Abdur Rahman Sarkar, Md Romij Uddin, Uttam Kumer Sarker, Kawsar Hossen, Umme Rosemila
      Pages: 12 - 16
      Abstract: The research work was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during aman season from July to December 2015 to study the effect of nitrogen fertilizer and weed management on the growth and yield of transplant aman rice cv. BRRI dhan46. The experiment consisted of four fertilizer treatments viz. 0 kg N ha−1 (N0), 40 kg N ha−1(N1), 80 kg N ha−1(N2) and 120 kg N ha−1(N3) and four weeding treatments viz. one hand weeding at 20 DAT (W1), two hand weedings at 20 and 35 DAT (W2), three hand weedings at 20, 35 and 50 DAT (W3), weeding by Japanese rice weeder twice at 20 and 35 DAT (W4) and unweeded control (W5). The experiment was laid out in the randomized complete block design with three replications. The highest plant height (113.00 cm), number of total tillers hill−1 (8.74), number of effective tillers hill−1 (6.18), panicle length (21.98 cm), number of grains panicle−1 (114.20), grain yield (4.00 t ha−1), straw yield (5.25 t ha−1) and biological yield (9.25 t ha−1) were recorded in N2 (80 kg N ha−1) treatment. The lowest plant height (106.00 cm), number of total tillers hill-1 (7.20), number of effective tillers hill−1 (5.00), panicle length (20.70 cm), number of grains panicle−1 (97.60), grain yield (3.52 t ha−1), straw yield (4.46 t ha−1) and biological yield (7.97 t ha−1) were recorded from N0 (No nitrogen fertilizer control) treatment. On the other hand, the highest grain yield 4.23 t ha−1 was observed in three weedings condition because of the highest number of effective tillers hill−1 (6.81), number of grains panicle−1(111.10). The highest straw yield (5.51 t ha−1) was also found in three weeding condition. The lowest grain yield (3.40 t ha−1) was recorded in W5 (unweeded control) treatment. The lowest straw yield (4.31 t ha−1) was also observed in W5 (unweeded control) treatment because of the smallest plant (106.97 cm) and lower number of total tillers hill−1 (7.20). Therefore, 80 kg N ha−1along with three hand weedings at 20, 35 and 50 DAT may be used for obtaining the highest grain and straw yields of BRRI dhan46J. Bangladesh Agril. Univ. 16(1): 12-16, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36473
      Issue No: Vol. 16, No. 1 (2018)
       
  • Participation of rural women in activities related to homestead vegetable
           cultivation at Monirampur upazila under Jessore district

    • Authors: Md Ariful Islam, Mohammad Bashir Ahmed, Md Matiul Islam
      Pages: 17 - 22
      Abstract: The main purposes of the study were to assess the extent of participation of rural women in homestead vegetable cultivation at Monirampur upazila under Jessore district and to explore the relationship between each of the selected characteristics of the rural women and their extent of participation in homestead vegetable cultivation. The study was limited within three selected villages namely, Nehalpur and Panchakori of Nehalpur union and Jhanpa of Jhanpa union. Data were collected from randomly selected 60 respondents during the period of 04 September to 17 October, 2016. Appropriate scales were used to measure the variables of the study. Correlation(s) test was used to ascertain the relationships between the concerned independent variables and dependent variable. About half (48.3 percent) of the rural women had low to medium participation in vegetable cultivation compared to 3.34 percent having high participation. Considering broadly selected 6-aspects of homestead vegetable cultivation, the rural women’s participation was highest in seedbed preparation and raising of seedlings, while it was lowest in case of intercultural operation. In case of 26-issues, the most dominant area of rural women’s participation was seed collection while it was least in case of training. Only age out of eleven selected characteristics had the significant positive relationship with their participation in homestead vegetable cultivation. It might be concluded from the gist findings that, the participation of women in homestead vegetable production is still not satisfactory and necessary steps concerning extension approach should be taken to increase the vegetable production by ensuring barrier-free participationJ. Bangladesh Agril. Univ. 16(1): 17-22, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36475
      Issue No: Vol. 16, No. 1 (2018)
       
  • Productivity and economics of maize–squash intercropping at
           different planting systems

    • Authors: S Mahmud, MM Alam, MM Rahman, M Amin, MM Hassan
      Pages: 23 - 26
      Abstract: The competitive behaviors of maize–squash intercropping at different planting systems were studied at Regional Agricultural Research Station, Hathazari, Chittagong, Bangladesh during the Rabi season of 2016–17 to find out the suitable planting arrangement of maize–squash intercropping for maximum productivity and economic return. There were seven treatments i.e. T1= sole maize, T2= 1 row maize (100%) + 1 row squash (6 plants/row), T3= maize paired row (100%) + 1 row squash (5 plants/row), T4= maize paired row (100%) + 1 row squash (4 plants/row), T5= maize paired row (100%) + 2 row squash (5 plants/row), T6= maize paired row (100%) + 2 row squash (4 plants/row) and T7= sole squash. Results revealed that the Maize Equivalent Yield (MEY) was highest (18.39 t/ha) in T5treatment, where Maize paired row (100%) + 2 row squash (5 plants/row) was consummated. The highest Land Equivalent Ratio (LER) 1.62 was found in T5 treatment. Benefit-Cost Ratio (BCR) was also the highest (3.29) in T5 treatment. Maize paired row (100%) and two rows of squash (5 plants /row) was the suitable row arrangement of the intercrops for judicious use of land consisting optimum populations of the component crops to produce more yield and economic profitJ. Bangladesh Agril. Univ. 16(1): 23-26, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36476
      Issue No: Vol. 16, No. 1 (2018)
       
  • Standardization of protocol for in vitro propagation of banana (Musa
           sapientum)

    • Authors: Farhana Hoque, Mahbub Robbani, Md Fakhrul Hasan, Jahanara Parvin
      Pages: 27 - 30
      Abstract: An experiment was conducted at the Plant Biotechnology Laboratory, Department of Horticulture, Patuakhali Science and Technology University during the period from August 2016 to April 2017 to standardize the protocol for in vitro propagation of banana. The experiment was laid out in completely randomized design with four replications. Three to four months aged field grown rhizome attached shoots were used as explants and cultured on MS medium with different concentrations and combinations of BAP (6-benzylamino purine), BAP + KIN (Kinetin) + NAA (Naphthalene Acetic Acid) and IBA (Indole-3- Butyric Acid) + IAA (Indole-3- Acetic Acid) to observe their efficacy on single shoot initiation, shoot multiplication and root formation respectively. Minimum number of days required for shoot initiation (9.07) with highest shoot initiation percentage (91.14) and the longest shoot (2.23 cm) was found in MS medium supplemented with 5.0 mg/L BAP. On the other hand, highest shoot multiplication percentage (80.99) with maximum number of shoots per explant (4.47), the highest length of shoots (4.17 cm) and maximum number of leaves (4.04)was observed in MS medium supplemented with 4.0 mg/L BAP + 2.0 mg/L KIN + 2.0 mg/L NAA. In case of root regeneration, the best results on days required for root initiation (9.00), the highest root initiation percentage (85.05), maximum number of roots per plantlet (5.83) and the highest length of roots (4.17 cm) was obtained in MS medium supplemented with1.5 mg/L IBA + 0.5 mg/L IAA. After 5-7 days of hardening in room temperature, established plantlets were ready for plantingJ. Bangladesh Agril. Univ. 16(1): 27-30, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36477
      Issue No: Vol. 16, No. 1 (2018)
       
  • Herbicide based weed management in aromatic rice of Bangladesh

    • Authors: AKM Mominul Islam, Md Azhiat-Ul Huq Hia, Shubroto Kumar Sarkar, Md Parvez Anwar
      Pages: 31 - 40
      Abstract: Selection of appropriate weed management strategy helps reduce rice yield loss due to weeds. Despite some undesirable side-effects, no viable alternative is currently available to shift the chemical weed management in rice. However, time of herbicide application is very important with respect to its efficacy. Keeping in mind the inevitability of herbicidal weed control, the current study was designed to evaluate the response of selected aromatic fine rice varieties of Bangladesh to different herbicides based weed management practices compare to farmers’ practices. The experiment was conducted in a randomized complete block design with three replications. The experiment consisted of five aromatic rice varieties; Kalijira, BRRI dhan34, BRRI dhan37, BRRI dhan38 and Binadhan-13, and six different weed management practices comprising no weeding, weed free, mechanical + manual weeding, pre–emergence herbicide + manual weeding, post–emergence herbicide + manual weeding and pre– + post–emergence herbicide. Eleven weed species belonging to five families were observed in the experimental plots. Based on the summed dominance ratio (SDR), grassy weed species Echinochloa crusgalli (SDR of 30.7) was the most dominant species, whereas broadleaf weed Nymphaea nouchali (SDR of 0.83) was the least one. Among the weed control treatments, application of pre–+ post emergence herbicides offered the highest reduction in weed density and biomass at all sampling dates which resulted in minimum crop-weed competition facilitating improvement in the yield contributing characters and finally resulted in the highest grain yield (2.5 t ha−1) and harvest index (30.7%) next to the weed free treatment. The variety BRRI dhan38 gave the highest grain yield (3.4 t ha−1) due to the highest performance of the yield contributing characters among the varieties. In interaction, BRRI dhan38 with pre–+ post–emergence herbicide application gave the highest yield (3.4 t ha−1) apart from the weed free treatment. Being efficient in weed density and biomass reduction as well as the highest yield producer, sequential application of pre–and post–emergence herbicides may be recommended for effective weed management practices in BRRI dhan38J. Bangladesh Agril. Univ. 16(1): 31-40, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36478
      Issue No: Vol. 16, No. 1 (2018)
       
  • Estimation of genetic variability, correlation and path coefficient
           analysis in local landraces of rice (Oryza sativa L.) for the improvement
           of salinity tolerance

    • Authors: Md Rasel, Lutful Hassan, Md Injamum Ul Hoque, Setu Rani Saha
      Pages: 41 - 46
      Abstract: Twenty eight local rice landraces were assessed for eleven morphological traits for the improvement of salt tolerance ability of rice genotypes. Genotypic variance (σ2g), phenotypic variance (σ2p), phenotypic co-variance (PCV), genotypic co-variance (GCV), heritability, genetic advance, genetic advance as a percentage of mean, correlation coefficient and path coefficient were estimated. For all the traits, PCV was higher than the GCV indicating that they were controlled by non-additive gene action and selection for the improvement of these traits would be promising. Among the traits, survival rate of plant exhibited high estimates of PCV (460.72) and GCV (324.73) indicated wide range of variability for these traits where lowest phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) where low PCV and GCV were observed for root dry weight (0.17 & 0.12) followed by shoot dry weight (0.31 & 0.16) and total number of roots (0.61 & 0.34) indicating lack of inherent variability and limited scope for improvement through selection for these traits among the genotypes. Highest heritability had observed in all traits except chlorophyll content and root length and maximum value of heritability was noticed for shoot length (75.96%). High heritability along with high genetic advance was noticed for survival rate of plant (31.14%) followed by live leaves percentage (11.98) and the lowest genetic advance was found in root dry weight (0.58) and shoot dry weight (0.58). Correlation study revealed that significant negative correlations at both phenotypic and genotypic level exist between standard evaluation score (SES) and survival rate (%), root length, shoot length, root fresh weight, root dry weight and shoot dry weight at the seedling stage further confirmed the importance of these parameters as useful selection criteria for screening for salt tolerance rice genotypes. Path analysis revealed that the root length (0.487), root dry weight (0.394) and shoot dry weight (0.047) had direct positive effect on standard evaluation score at genotypic level where live leaves (%) per plant (0.168), total number of roots (0.006), chlorophyll content (0.243) and shoot fresh weight (0.102) had direct positive effect on standard evaluation score at phenotypic level. From the correlation and path analysis it can be concluded that root length, root dry weight and shoot dry weight would be more promising for the improvement of salt tolerance in rice genotypesJ. Bangladesh Agril. Univ. 16(1): 41-46, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36479
      Issue No: Vol. 16, No. 1 (2018)
       
  • Drought and salinity affect leaf and root anatomical structures in three
           maize genotypes

    • Authors: Md Injamum Ul Hoque, Md Nesar Uddin, Md Solaiman Ali Fakir, Md Rasel
      Pages: 47 - 55
      Abstract: Salt and drought stresses are being quite similar considered as two major constraints in maize production. To explore the anatomical bases of resistance to salt and drought stresses, 14 days old seedlings of three maize hybrid genotypes were subjected to salt (100 mM NaCl) and drought stress (equiosmotic PEG-6000) under hydroponic conditions. The experiment was laid out following a completely randomized design having four replicates. Root protoxylem and metaxylem thickness and root diameter were found to be unaffected in both of the drought resistant genotypes in response to salt and drought stresses whereas root protoxylem thickness increased (33.8 and 112.8% by salt and drought stress, respectively) in sensitive genotype (BARI hybrid maize-7). Bundle sheath thickness was found to increase in response to stresses (58.4 and 59.3% by salt and drought stress, respectively) in BARI hybrid maize-12. BARI hybrid maize-12 showed unaffected response in leaf epidermal thickness, phloem area, xylem area and total leaf thickness under both salt and drought stressesJ. Bangladesh Agril. Univ. 16(1): 47-55, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36480
      Issue No: Vol. 16, No. 1 (2018)
       
  • Phenolics and carotenoids contents and radical scavenging capacity of some
           selected solanaceous medicinal plants

    • Authors: Rumana Islam, Md Nesar Uddin, Md Ashrafuzzaman, Md Injamum Ul Hoque
      Pages: 56 - 61
      Abstract: Plants being an important source of medicine play significant role in human health. The aim of the present study was to evaluate thetotal phenolics and carotenoids contents, and free radical scavenging capacity of leaves and fruits of selected five solanaceous medicinal plants, namely Solanum melongena (brinjal), Solanum torvum (tit begun), Solanum virginianum (kantikari), Solanum sisymbrifolium (sada kantikari) and Solanum nigrum (futi begun). Carotenoids content in the leaves and fruits of solanaceous plants varied significantly among the species. Leaf phenolics content ranged between 147.40 (S. melongena) and 585.15 (S. virginianum) mg gallic acid equivalent (GAE)/100 g fresh weight, while fruit phenolics content varied from 50.52 (S. nigrum) to 105.02 (S. virginianum) mg GAE/100 g fresh weight. IC50 values for scavenging 2, 2-diphenyl-1-picrylhydrazyl radical (DPPH) radical ranged between 31.52 (S. nigrum) and 33.55 (S. melongena) mg mL−1 in leaf, while in fruit it ranged between 27.90 (S. virginianum) and 33.11 (S. melongena) mg mL−1. The highest carotenoids content (0.370 mg g−1 fresh weight) was measured from Solanum nigrum leaf. S. virginianum leaf contained about 4−fold high phenolics content than that in S. melongena. S. nigrum leaf had about 15−fold high carotenoids content (0.370 mg g−1 fresh weight). compared to S. torvum and S. virginianum fruits (0.024 mg g−1FW in each). Because of the highest fruit phenolics and carotenoids content along with the lowest IC50 values for scavenging DPPH, S. virginianum fruit can be considered as superior for its health beneficial biochemical constituentsJ. Bangladesh Agril. Univ. 16(1): 56-61, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36481
      Issue No: Vol. 16, No. 1 (2018)
       
  • Screening of barley genotypes for drought tolerance based on culm reserves
           contribution to grain yield

    • Authors: Md Masudul Karim, Md Amirul Islam, Md Rasel Rana, Md Alamgir Hossain, Md Abdul Kader
      Pages: 62 - 66
      Abstract: Grain filling determines the grain weight, a major component of grain yield in cereals. Grain filling in barley depends on current assimilation and culm reserves. A pot experiment was conducted at the Grilled House, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh during October 2015–May 2016 to study the grain filling patterns and the contributions of culm reserves to grain yield under drought stress. The experiment consisted of two factors—barley cultivars (six cultivars) and drought stress treatments (control and drought stress). Drought stress was imposed by limiting the irrigation during grain filling period. The tillers were sampled at anthesis, milk-ripe and maturity to determine the changes in dry weights of different parts, viz., leaf lamina, culm with sheath, spikes, and grains; and to examine the contribution of culm reserves to grain yield. The result in this experiment revealed that the grain yield was reduced by 5–25% due to drought stress. The reduction in grain yield was attributable to reduce number of grains per spike and lighter grain weight due to the stress. Drought stress drastically reduced the grain filling duration by about 30% and the stress induced early leaf senescence. Photosynthesis rate and leaf greenness were also reduced in stress. The stress altered the contribution of culm reserves, water soluble carbohydrates (WSCs) in culms to grains. At milk ripe stage, accumulation reached its peak. It accumulated 29.0 to 70.0 mg and from 15.8 to 40.6 mg culm−1 in control and stressed plants, respectively. The residual culm WSCs ranged from 3.5 to 11.2 mg and 1.0 to 3.5 mg culm−1 under control and stress conditions, respectively. The highest contribution of culm WSCs to grain yield was observed in BARI barley2 and the lowest was in BARI barley5 both in control and stress condition. Among the cultivars studied, BARI barley2 produced higher yield with the higher contribution of culm reserves to grain yield under the drought stress.J. Bangladesh Agril. Univ. 16(1): 62-66, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36482
      Issue No: Vol. 16, No. 1 (2018)
       
  • Effect of salt stress on growth of sorghum germplasms at vegetative stage

    • Authors: Ramen Chandra Roy, Ashaduzzaman Sagar, Jannat E Tajkia, Md Abdur Razzak, AKM Zakir Hossain
      Pages: 67 - 72
      Abstract: Soil salinity is an increasing problem in the world and main obstacle to agricultural productivity especially in areas where irrigation is necessary. It adversely affects plant growth and development. Adoption of salt tolerant variety is more important here and so screening of salt tolerant germplasms is essential. For this reason, a germination test under salinity and a hydroponic experiment were conducted at Plant Physiology Laboratory, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh to investigate the effect of NaCl on germination, morphological characters and growth of sorghum seedlings. The experiment comprised of two levels of NaCl concentration viz. Control (without NaCl and EC 1.36 dSm−1 in hydroponic culture) and 80 mM NaCl and five sorghum germplasms viz. BD 700, BD 703, BD 707, BD 710 and BD 726. There were 10 (5×2) treatments in a completely randomized design (CRD) with three replications. Results showed that germination percentage, hypocotyls and epicotyls length, root and shoot length, leaf length, leaf sheath length, fresh and dry mass production were influenced by NaCl stress. However, among tested germplasms, BD 707 showed the best performance considering the seedlings growth, germination percentage and other parameters. BD 710 and BD 703 showed the highest sensitivity to NaCl stress based on the above parameters studied. These results suggested that sorghum is able to grow with moderate salinity.J. Bangladesh Agril. Univ. 16(1): 67-72, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36483
      Issue No: Vol. 16, No. 1 (2018)
       
  • Effects of combined application of chemical fertilizer and vermicompost on
           soil fertility, leaf yield and stevioside content of stevia

    • Authors: MM Zaman, Md Arifur Rahman, Tanzin Chowdhury, MAH Chowdhury
      Pages: 73 - 81
      Abstract: Sustainable nutrient management with the combination of organic and chemical fertilizer amendment expects a key part in upgrading stevia yield without harming the environment and to build up the nutrient balance with increasing soil fertility. A pot experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh to study the combined effect of vermicompost (VC) and chemical fertilizer (CF) on the growth, leaf biomass yield and stevioside content of stevia in acid soil. Six combinations of VC and CF were applied following completely randomized design (CRD) with three replications. Results showed that VC along with different rates of CF exerted significant influence on the growth, leaf biomass yield and stevioside content of stevia and postharvest soil fertility. The highest values for most of the parameters were found from the plant receiving VC @ 7.5 t ha­−1 along with 50% CF. About 578% higher leaf biomass yield was obtained from the treatment VC7.5+CF50 over control. Stevioside content was increased with the increasing levels of VC up to 7.5 t ha−1 along with 75% of CF and also with the advancement of growth period from 30 to 60 days after planting. The highest amount of stevioside (11.05%) was detected in the leaves of plant of the same treatment at harvest. Soil acidity was significantly decreased with the increased levels of VC and CF where as soil fertility in terms of organic matter and nutrient content was increased. Considering the overall performance, farmers may be advised to cultivate stevia in acid soil applying VC @ 7.5 t ha−1 along with 50% chemical fertilizer to boost up stevia production under the agroclimatic condition of the study area in the context of BangladeshJ. Bangladesh Agril. Univ. 16(1): 73-81, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36484
      Issue No: Vol. 16, No. 1 (2018)
       
  • Cardioprotective molecule and bioactive compounds of some selected
           vegetables available in Bangladesh

    • Authors: Md Arif Sakil, Mohammed Arif Sadik Polash, Md Tahjib Ul Arif, Md Afzal Hossain, Md Alamgir Hossain
      Pages: 82 - 87
      Abstract: Cardiovascular disease (CVD) is one of the leading causes of death and morbidity as well as imposing a huge economic burden at both country and household level. Upto 90% cardiovascular disease may be preventable if established risk factors are avoided. In this context, dietary nitrate from vegetables was highlighted as a potential candidate for cardio protection. Hence, by supplying dietary nitrate and other bio-active compounds to ease the risk of cardiovascular disease, present research work was carried out. Among the tested vegetables, the highest nitrate content (745 mg/100g) was determined in Indian spinach. In addition, Indian spinach also possesses more chlorophyll (150mg/100g), beta carotene (40mg/100g) and lycopene (34mg/100g) than other tested vegetables in the current study. In case of anti-oxidant content, Indian spinach showed the highest (103mg/100g) vitamin C content. Taken all together, Indian spinach may be a good and cheapest source of cardio protective molecule (nitrate) bioactive compounds to avoid risk of cardiovascular disease.J. Bangladesh Agril. Univ. 16(1): 82-87, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36485
      Issue No: Vol. 16, No. 1 (2018)
       
  • Profitability analysis of paddy production: A case of agricultural zone 1,
           Niger State Nigeria

    • Authors: Madu Ali Bwala, Aniobi U John
      Pages: 88 - 92
      Abstract: This study estimated the profitability of rice production among small scale farmers in Bida agricultural zone of Niger state. The study utilized a multi-stage random sampling technique to select a total of one hundred and five (105) rice farmers in the area. The data was collected through a well-structured questionnaire from four communities in the study area. Descriptive statistics and farm budgeting tools were used for the analyses. The descriptive analysis showed that the farmers are highly productive between the age range of 37- 48 years. Furthermore, results also revealed land area cultivated by the farmers to be generally below two hectares. The finding further revealed the variable cost per hectare for rice production to be $126,100 per production cycle, while total revenue of $227,500 was realized by the respondents. The results also revealed cost of labour to account for the largest portion (54.0%) of the total variable cost. This is followed by the cost of seed, fertilizer, transportation, herbicide, pesticide and bagging. The farm budgeting analysis revealed the costs and returns of rice production to be profitable with a gross margin of $101,400 and net farm profit of $98,546.4. The gross profit ratio was calculated to be 0.45 which implies that farmers are selling their rice produce at a relatively high profit percentage. Based on the results obtained from the study, it was concluded that rice production in Bida Agricultural Zone of Niger State is profitable. Hence, the cultivation of rice is an important enterprise that should be encourage, considering the fact that it is a major staple. It is therefore recommended that timely availability of farm inputs such as improved seed variety and agrochemicals will further boos trice production in the area. Furthermore, provision of credit facilities to small scale farmers is a viable policy to be pursuedJ. Bangladesh Agril. Univ. 16(1): 88-92, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36486
      Issue No: Vol. 16, No. 1 (2018)
       
  • Determinants of tomato farmers efficiency in Mymensingh district of
           Bangladesh: Data Envelopment Analysis approach

    • Authors: Sandip Mitra, Muhammad Yunus
      Pages: 93 - 97
      Abstract: Tomato is one of the major vegetables in Bangladesh that experienced massive productivity growth after independence. Nevertheless, farmers are struggling to find out optimal input combination in their farm that causes inefficient input use. Therefore, this study estimated the factors affecting efficiency of tomato farmers in Mymensingh of Bangladesh. Input oriented Data Envelopment Analysis (DEA) was employed for measuring efficiency while Tobit regression model was used to estimate the factors affecting efficiency. A total of 60 tomato farmers were selected using random sampling technique. Mean technical efficiency for tomato farmers was 0.83 implies that tomato farmers can reduce their input use by 17%. Education, training and high yielding variety adoption had positive effect on efficiency while age of tomato farmer’s had negative effect on efficiency. Efficiency increased with the farmer’s education, training and variety adoption. Farmer’s adopting local high yielding variety was more efficient than that of exotic high yielding variety. In addition, efficiency of farmers reduced with their age. Improvement of tomato farmer’s efficiency is possible if farmers received education, training and local high yielding variety.J. Bangladesh Agril. Univ. 16(1): 93-97, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36487
      Issue No: Vol. 16, No. 1 (2018)
       
  • Analysis of land tillage practices and related problems among rice farmers
           in the tropic of sub-saharan Africa

    • Authors: Madu Ali Bwala, Saliu Akinlabi Tiamiyu, Alhaji Yanda Kolo
      Pages: 98 - 103
      Abstract: The decision “to till” or “not to till” is premised on the farmers’ perception of the inherent negative effects of tilling vis-à-vis the crop output performance and the profitability of the farm venture. Land tillage practices and land related problems of farmers were assessed in Agricultural Zone I of Niger State, Nigeria. Furthermore, the relation between land related problems and rice production levels was also investigated. Cross sectional data was collected for the analysis using questionnaire from one hundred and twenty (120) rice farmers. Descriptive statistics as well as the Chi-Square Test were used to analyze data collected. Findings revealed that 40.8 % and 56.7% of the respondents utilize manual and mechanized tillage methods on their farms, respectively. Thus indicating a majority (97.5%) of the farmers intensively tilling the soil as a cultivation practice. Land related problems reported by farmers include induce errosion, loss of nutrient, insect pest attack and change in soil texture. Furthermore, it was also found that farmers operating at a higher level of production experience more land related problems on the fields. The Chi square analysis revealed a strong relationship between tillage method and prevalence of land related problems and incidences of pests and diseases. Also levels of production at which farmers operate was found to have a relationship with the incidence of tillage related problems observed on the farms. It is therefore the opinion of this study that agronomist need to research and put forward environmentally friendly tillage methods that best suits farmer needs in the study area. Furthermore, farmer education about the negative effects of tilling without recourse to the environment is also advocated.J. Bangladesh Agril. Univ. 16(1): 98-103, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36488
      Issue No: Vol. 16, No. 1 (2018)
       
  • Financial profitability of small scale shrimp farming in a coastal area of
           Bangladesh

    • Authors: Noor A Arefin Shawon, Md Masudul Haque Prodhan, Md Akhtaruzzaman Khan, Sandip Mitra
      Pages: 104 - 110
      Abstract: Aquaculture especially shrimp farming has significant contribution to the economy of Bangladesh. The southwest coastal area is more prominent for commercial shrimp farming due to its auspicious environment, higher economic returns, nutrition value and for employment opportunity. The present study estimates the socioeconomic status and financial profitability of small-scale shrimp farming in selected areas of Khulna district. One hundred (100) shrimp farmers were selected and data were collected through direct interview method. Financial profitability was analyzed from the different point of view. The study revealed that about 35% farmers lie in prime working age group. Most of the farmers completed primary level of education while a few of them were illiterate. Family size of 65 % farmer’s was medium and 40% farmer’s main occupation was shrimp farming. Study also revealed that gross profit margin was high i.e. 59% indicating that farmers did well in managing their farm and farmers has more to cover for operating, financing and other cost.  Break-even price for the small scale shrimp worked out Tk. 311 per kg while break-even production was found 155 kg per acre. Benefit cost ratio and net profit margin were found more than one and positive respectively, indicated that small scale shrimp farming was commercially profitable. The research concludes that there is ample scope and possibility for sustaining and developing the small scale shrimp farming in the coastal area of Bangladesh.J. Bangladesh Agril. Univ. 16(1): 104-110, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36490
      Issue No: Vol. 16, No. 1 (2018)
       
  • Management practice adoption and productivity of commercial aquaculture
           farms in selected areas of Bangladesh

    • Authors: Md Masudul Haque Prodhan, Md Akhtaruzzaman Khan
      Pages: 111 - 116
      Abstract: Adoption of scientific management practice is the pre-condition for increasing productivity in any farm business. This study estimates the level of scientific aquaculture management practice (SAMP) adoption, factor affecting adoption and its relation with productivity. Sixty aquaculture farms were selected from 3 upazilas of Mymensingh district of Bangladesh. Adoption level was measured by following Sengupta (1967) while Tobit regression was used to assess the determinants of adoption level. Polynomial regression was employed to show the relationship among farm size, adoption level and productivity. Result revealed that average SAMP adoption level was 54% where 53% farmers were medium adopter. Training, experience, education and extension service had significant positive effect on level of adoption. Productivity was significantly higher for those farmers who adopted more SAMP. Adoption level, productivity and profitability of small farmers were higher than that of large farmers. The study suggests farmers for adopting scientific management practices in order to increase the aquaculture productivity and profitability.J. Bangladesh Agril. Univ. 16(1): 111-116, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36491
      Issue No: Vol. 16, No. 1 (2018)
       
  • Relative profitability of farming systems research and development (FSRD)
           project farmers and non-project farmers of integrated farming systems in
           Tangail district of Bangladesh

    • Authors: Sajia Sharmin, M Harun Ar Rashid, Ratna Begum, Sadia Sharmin Hoque
      Pages: 117 - 122
      Abstract: Integrated farming system modifies the commercial farming system which ensures higher food production to equate the demand, environmental protection through effective recycling of waste and increased farm income. The present study was undertaken to examine the relative profitability of FSRD project farmers and non-project farmers of integrated farming system. Eighty (80) farmers (40 from FSRD project and 40 from non-project farmers) were selected from Kalihati Upazila under Tangail district of Bangladesh. In the study area, vegetables, fish and poultry enterprises were integrated under technological intervention. The waste of poultry farm was used in fish production and the soil of the pond was used in vegetables cultivation. Per hectare net returns from integrated farming were estimated at Tk513458.10 and Tk256511.90for FSRD project farmers and non-project farmers, respectively. Benefit cost ratio (BCR) was 1.66 for FSRD project farmers and1.37 for non-project farmers. In functional analysis, human labor, fingerling, feed, fertilizer, insecticides costs in case of FSRD project farmers and human labor, feed, salt and lime costs in case of non-project farmers had significant impact on per hectare return of integrated farming. FSRD project farmers were more profitable than the non-project farmers. Therefore, it can be concluded that there is great scope to improve the overall economic condition of farmers through introducing integrated farming system in Tangail District of Bangladesh.J. Bangladesh Agril. Univ. 16(1): 117-122, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36492
      Issue No: Vol. 16, No. 1 (2018)
       
  • Factors affecting poverty in rural Bangladesh: An analysis using
           multilevel modelling

    • Authors: Md Farouq Imam, Mohammad Amirul Islam, MJ Hossain
      Pages: 123 - 130
      Abstract: Poverty is a multi-faced problem in the developing world and it is much more complex in rural settings. Hence, policy formulation based on national level studies sometimes fails to find remedies of rural poverty. Thus, the present study aims to identify the determinants of poverty in rural Bangladesh using the nationally representative Household Income and Expenditure Survey (HIES) 2010 data. The HIES follows a hierarchical structure hence, two-level random intercept binary logistic regression models were used to capture the unobserved heterogeneity between communities along with revealing important factors associated with poverty. The analyses found that 32% of the households were absolute poor and 19% were extremely poor in rural Bangladesh. The potential factors having significant association with poverty were found to be age and education of household head, division, household size, household types, number of dependents, per capita income, household own land, access to electricity, amount of cultivable land, engagement in livestock and farm forestry, household non-agricultural assets, number of male earner and number of female earner in the family. Significant community-level variations were observed in the analyses which emphasis the need for special attention on the poor performing communities. Specific policy recommendations have been suggested for the poverty alleviation of rural households in Bangladesh.J. Bangladesh Agril. Univ. 16(1): 123-130, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36493
      Issue No: Vol. 16, No. 1 (2018)
       
  • Modeling and forecasting of climatic parameters: univariate SARIMA versus
           multivariate vector autoregression approach

    • Authors: MJ Hossain, AKM Abdullah Al Amin, Abu Hayat Md Saiful Islam
      Pages: 131 - 143
      Abstract: Agriculture sector throughout the world including Bangladesh is extremely vulnerable to the negative consequences of climate change as evident in a good number of studies. Accurate climate forecasting may prove a valuable resource in mitigating these consequences in agriculture. The study aims to identify the best performing forecasting method by comparing the forecasting abilities of univariate seasonal autoregressive integrated moving average (SARIMA) and multivariate vector autoregression (VAR) models in forecasting monthly maximum and minimum temperatures,  humidity,  and cloud coverage in Bangladesh. Though the univariate time series investigate the influence of the past values of a single time series on the future values of that specific series, the VAR approach forecast multivariate time series simultaneously incorporating the interrelationship among the groups of variables. Monthly forecasts of climatic parameters for in-sample over the period 1972-2008 and out-of-sample from 2009-2013 were generated via a univariate SARIMA and a VAR approach. Different forecast accuracy measures reveal that VAR model give better forecast than univariate SARIMA model. The forecast results using VAR(9) model from January 2014 to December 2021 show that maximum and minimum temperature, as well as humidity are increasing while the cloud coverage is decreasing, that is, consistent with global warming. Moreover, the impulse response function results exhibit the fluctuated and significant dynamic relationships in future among the foresaid climatic variables. Thus, findings of the study can potentially allow Bangladeshi farmers and other actors in the agriculture sector to make proper planning to abate unwanted impacts or reap the expected benefits of favourable climate.J. Bangladesh Agril. Univ. 16(1): 131-143, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36494
      Issue No: Vol. 16, No. 1 (2018)
       
  • Performance evaluation of power-operated reapers for harvesting rice at
           farmers’ field

    • Authors: Md Ashraful Alam, Anwar Hossen, AKM Saiful Islam, Monjurul Alam
      Pages: 144 - 150
      Abstract: Harvesting is one of the major labor intensive works in rice cultivation. Appropriate harvesting machinery is urgently needed to reduce labor and production costs. Production cost of rice becomes high due to labor shortage and high wage rate during harvesting time. Techno-economic performance of Korean self-propelled reaper (KR), China self-propelled reaper (CR) and BRRI reaper (BR) were evaluated in order to identify the field constrains and problems of the reapers at Mithapukur of Rangpur, Bangladesh during Aman season of 2013. The actual field capacities of the KR, CR and BR were found 0.18, 0.17 and 0.15 ha h–1with the corresponding field efficiency of 55, 68 and 56%, respectively. The variation of field capacity among the models was due to turning time losses, weight of the reaper and operator’s skill. The fuel consumption of the reapers was 4.11, 2.61 and 8.39 l ha–1 for KR, CR and BR, respectively. The shattering loss of paddy harvesting was 1.66, 1.50 and 1.45% for KR, CR and BR, respectively. The break-even area of the reapers was 9.15, 7.82 and 8.43 ha yr-1 for KR, CR and BR, respectively. It is evident that the reaper could be used successfully as labor saving and user friendly technology to eliminate post-harvest problems in Bangladesh.J. Bangladesh Agril. Univ. 16(1): 144-150, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36495
      Issue No: Vol. 16, No. 1 (2018)
       
  • Effect of formaldehyde on some post-harvest qualities and shelf-life of
           selected fruits and vegetables

    • Authors: Raiya Adiba Antora, Md Pavel Hossain, Syeeda Shiraj Um Monira, Mohammad Gulzarul Aziz
      Pages: 151 - 157
      Abstract: In Bangladesh, a lot of fruits and vegetables have been accused of having prolonged shelf-life by formaldehyde adulteration. So, an evaluation of the effect of formaldehyde was carried out by treating mango, litchi and oyster mushroom with different concentrations of formaldehyde and assessing their quality parameters. The three samples were dipped in 0%,1%, 5% and 10%formaldehyde solutions for 15 minutes and packed in a modified atmosphere package for observation. Changes in color, texture and weight loss were observed during storage at every alternate day. No significant increase in post-harvest quality and shelf-life was observed for mango and litchi treated with formaldehyde compared to control. Treated mushroom attained elastic texture and remained in this state up to the end of storage, whereas the control spoiled days after storage. Although formaldehyde-treated mushroom showed extended shelf-life, they lost their commercial freshness. The formaldehyde solutions did not have any significant effect on weight loss. So, formaldehyde is not a useful preservative to improve the post-harvest quality and shelf-life of fresh fruits and vegetables.J. Bangladesh Agril. Univ. 16(1): 151-157, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36496
      Issue No: Vol. 16, No. 1 (2018)
       
  • Effects of soaking and grinding conditions on anti-nutrient and nutrient
           contents of soy milk

    • Authors: Humyra Nowshin, Kumkum Devnath, Anjuman Ara Begum, Md Anisur Rahman Mazumder
      Pages: 158 - 163
      Abstract: Although soy milk is a very good source of nutrient with high biological value, the presence of anti-nutritional factors affects its nutrition quality and limits bioavailability of the nutrients. The effects of soaking duration and combination of soaking and grinding (hot or cold) on phytate, lipoxygenase, urease, trypsin inhibitor activity, protein solubility and other nutrient contents were investigated. Soaking alone at 55 and 60oC for different durations was found effective for the reduction of lipoxygense activity. Combination of soaking, blanching (80oC for 10 min) and hot grinding (100oC) significantly (P>0.05) reduced urease activity, more than 80% phytate activity and deactivated trypsin inhibitor, but did not affect protein solubility. Meanwhile, protein solubility (10–15%) was increased due to hot grinding. Soy milk extracted from soaking at 55 and 60oC for 2, 4 and 6 h with hot grinding provided higher protein content compared to cold grinding. Increase in soaking temperature from 55 to 60oC increased the extracted solid content having a potential fraction of lipid. Increasing soaking time from 4 to 6 h did not show any significant difference in terms of phytate inhibition, urease activity reduction, trypsin inhibition and protein solubility except lipoxygenase activity. The results suggested that soaking of soybean at 60oC for 6 h and hot grinding (100oC) with blanching at 80oC for 10 min is the best for reducing anti-nutrient and retaining nutrient activity for soy milk and other soy-based products.J. Bangladesh Agril. Univ. 16(1): 158-163, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36497
      Issue No: Vol. 16, No. 1 (2018)
       
  • Landmark-based morphometric and meristic analysis in response to
           characterize the wild Bhagna, Labeo ariza populations for its conservation
           

    • Authors: AK Shakur Ahammad, Md Borhan Uddin Ahmed, Salma Akhter, Md Kamal Hossain
      Pages: 164 - 170
      Abstract: The landmark-based morphometric and meristic analysis of three different stocks from the Atrai, the Jamuna and the Kangsha of Bhagna (Labeo ariza, Hamilton 1807) were examined from a phenotypical point of view to evaluate the population structure and to assess shape variation. A total of 90 Bhagna (L. ariza) were collected from three different water bodies: the Atrai, the Jamuna and the Kangsha of Bangladesh during January, 2017. Ten morphometric and nine meristic characters were analyzed along with twenty-two truss network measurements. One way ANOVA showed that all morphometric, meristic and truss network measurement were significantly different (P<0.001) among three different stock of the fish. For morphometric and landmark measurements, the first discriminant functions (DF) accounted for 98.6% and 97.9% and the second DF accounted for 1.4% and 2.1%, respectively among group variability, explaining 100% of total among groups variability. For the morphometric and truss network measurements, plotting discriminant functions showed a well-separated clusters of the stocks indicating that the measurement were significantly different among three stocks. The dendrogram based on morphometric and landmark distances data showed two major clusters; the Atrai and Jamuna stocks in one cluster and the Kangsha stock in another cluster. High degree of variation was observed in morphological characteristics among three different stocks (the Atrai, Jamuna and Kangsha) of L .ariza due to their environmental variation and separate geographical location. The results of this study are very useful for proper conservation and successful management of L. ariza and also for the scientific community for the further research.J. Bangladesh Agril. Univ. 16(1): 164-170, April 2018
      PubDate: 2018-04-30
      DOI: 10.3329/jbau.v16i1.36498
      Issue No: Vol. 16, No. 1 (2018)
       
 
 
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