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Journal Cover Bangladesh Journal of Agricultural Research
  [1 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 0258-7122
   Published by Bangladesh Journals Online Homepage  [106 journals]
  • Triple cereal system with fertilizer and planting management for improving
           productivity in coastal saline soils of Bangladesh

    • Authors: M Ataur Rahman, M Atikur Rahman, NCD Barma, TP Tiwari
      Pages: 1 - 15
      Abstract: A field experiment was conducted on a saline environment of Shatkhira to assess the feasibility of an intensive wheat-maize-rice cropping system with crop residue used as mulch, bed planting and fertilizer management to improve productivity. Three levels of fertilizers (Recommended dose of NPKS fertilizers, recommended fertilizers plus 50% additional K and S and recommended fertilizers with 2 t/ha ash) were assigned in main plots and four combinations of soil management and mulching (Conventional flat, Conventional with straw mulching @ 3 t/ha, Bed planting, and Bed with straw mulching @ 3 t/ha) were kept in subplots with three replications. Rice straw mulch was used after wheat sowing, wheat straw mulch was applied after maize sowing. Rice was puddle transplanted without mulch. Crop varieties like BARI GOM 25, BARI Hybrid Maize 7, and BRRI Dhan 39 were used for wheat, maize and rice, respectively. Chemical analysis of soils after two years of experimentation and the response of component crops for the two cropping cycles indicated that straw mulching either on bed or flat soil was equally effective in preventing rapid development of soil salinity in the dryer periods and thereby resulted in better stand establishment contributing to higher spikes/m2 of wheat and ears/m2 of maize. Available nutrient contents in soil, especially P (Olsen), B and K were improved when straw much was applied in bed or flat plantings. Application of ash with recommended fertilizer was effective in improving grain yields of component crops as compared to other fertilizer treatments without ash. The highest grain yield of wheat and maize was achieved when recommended dose of fertilizers plus ash with straw mulching were applied either in bed or flat soil condition for both the years. Treatment effect was not noted on rice yield in the first year, however the residual effect of treatments and its combinations became significant in the second year. Like wheat and maize, rice yield positively increased by fertilizer+ ash and mulching. Straw mulch and ash application contributed to soil salinity mitigation, favoured crop establishment and improved the yields of component crops.Bangladesh J. Agril. Res. 41(1): 1-15, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Productivity and partial budget analysis in wheat-rice sequences as
           influenced by integrated plant nutrition system and legume crops inclusion
           

    • Authors: Md Shakhawat Hossain, MAR Sarkar, M Jahiruddin, AK Chaki, ASM MR Khan
      Pages: 17 - 39
      Abstract: The experiments were carried out at the Regional Wheat Research Centre, Rajshahi of Bangladesh Agricultural Research Institute (BARI) for two consecutive years, 2009-10 and 2010-11 to evaluate the agro-economic productivity of Wheat-Rice cropping sequence as influenced by integrated plant nutrition system (IPNS) and inclusion of legume crops. The experiment comprised of four cropping sequences viz. Wheat-Mungbean- T. Aman rice, Wheat-Blackgram- T. Aman rice, Wheat-Sesbania- T. Aman rice and Wheat- Fallow- T. Aman rice; and six nutrient treatments viz. 100% recommended nutrient rates, IPNS with 3 t ha-1 poultry manure (PM), IPNS with 6 t ha-1 PM, IPNS with 5 t ha-1 cowdung (CD), IPNS with 10 t ha-1 CD and farmers’ practice (FP). It was carried out in a split-plot design assigning cropping sequences in the main plots and nutrient treatments in the sub-plots with three replications. For the IPNS, the 100% nutrient rates were adjusted with manure and fertilizers. Inclusion of mungbean in the Wheat-Rice cropping sequence showed higher production cost but it gave higher system productivity, gross return, gross margin, benefitcost ratio and production efficiency. This cropping sequence gave on an average 57% higher wheat equivalent yield (WEY) compared to the existing Wheat-Rice sequence followed by blackgram included cropping sequence. The IPNS based fertilizer and manure application had better yield performance, WEY, gross margin, gross return, benefit-cost ratio, production efficiency and land use efficiency as compared to 100% chemical fertilizers or FP. It is concluded that the Wheat-Mungbean-Rice cropping sequence with IPNS approach is a productive and profitable technology for crop cultivation.Bangladesh J. Agril. Res. 41(1): 17-39, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Biology and management of fruit borer, Virachola isocrates (Fab.)
           Infesting guava

    • Authors: MMH Khan
      Pages: 41 - 51
      Abstract: Two experiments were conducted to study the biology of guava fruit borer, Virachola isocrates (Fab.) and to evaluate the effectiveness of management practices for managing fruit borer, Virachola isocrates (Fab.) in Sharupkathi variety of guava. The biology including morphometrics of guava fruit borer were studied in the laboratory of the Department of Entomology, PSTU, Dumki, Patuakhali during May to October, 2012. Results revealed that incubation period, larval period, pupal period of this borer ranged from 8-10, 17-46, 7-33 days, respectively and total life cycle was completed within 30 to 60 days. Adult longevity ranged from 4-7 days. The average length of full grown larva was 17.45 mm, and breadth across thorax and abdomen were 3.36 and 2.80 mm, respectively. The average length of pupa was 15.90 mm, and breadth across thorax and abdomen were 3.68 and 2.89 mm, respectively. The average length of adult body was 16.90 mm, and breadth across thorax and abdomen were 3.91 and 2.94 mm, respectively. The average length of antennae was 10.35 mm. The mean length of pro-, meso and metathoracic legs was 7.55mm, 8.10mm and 10.45 mm, respectively. The metathoracic leg was longer as compared to pro and mesothorarcic legs. The length of fore wing across the upper and lower margin ranged from 16.00 mm to 18.00 mm and 11.50 mm to 12.00 mm, respectively. The length of hind wing across the upper and lower margin ranged from 10.00 mm to 11.00 mm and 8.00 mm to 9.00 mm, respectively. The breadth of fore wing across the middle ranged from 10.50-11.00 with mean breadth of 10.78 mm. Likewise, the breadth of hind wing across the middle ranged from 11.00-14.00 with mean breadth of 12.55 mm. The results on the percent infestation reduction over control revealed that package with field sanitation + collection of infested fruits + application of Superior (Chlorpyrifos + Cypermethrin) 505 EC @ 1 ml/ l water, and package consisting of field sanitation + collection of infested fruits + bagging of fruits with polythene bag gave 100 % control of the pest. These two packages may be used for the large scale cultivation of ‘Sharupkathi’ variety in BangladeshBangladesh J. Agril. Res. 41(1): 41-51, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Productivity of garlic under different tillage methods and mulches in
           organic condition

    • Authors: MA Kabir, MA Rahim, DAN Majumder
      Pages: 53 - 66
      Abstract: An experiment was conducted at the field of USDA-Alliums project, Bangladesh Agricultural University, Mymensingh to study the effect of tillage and mulches on the growth and yield of garlic. The experiment consisted of three tillage conditions (conventional, puddling and zero tillage) and four mulches (control, rice straw, water hyacinth and Curcuma amada leaf). The results revealed that different mulches had remarkable contributions on the growth and yield of garlic. The highest values of growth parameters as well as bulb yield were obtained from rice straw mulch identical with that of water hyacinth mulch. Different tillage also had significant influence on yield and yield contributing traits of garlic. Garlic cultivated under zero tillage showed remarkable variation in terms of percent emergence. Puddling and zero tillage practices resulted in higher yield compared to the conventional tillage. It was also noticed that both the tillage conditions as well as mulches showed profound effects on the yield and yield contributing parameters. Moreover, the highest net return (196647Tk. /ha) and the highest BCR of 2.90 was obtained from zero tillage with rice straw.Bangladesh J. Agril. Res. 41(1): 53-66, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • In vitro conservation of taro (Colocasia esculenta Var. Globulifera) as
           influenced by mannitol

    • Authors: MKR Bhuiyan, MJ Hossain, MM Haque
      Pages: 67 - 74
      Abstract: In vitro conservation of germplasm plays a vital role in maintenance breeding and also has many advantages over the conventional system. The experimental results for conservation of Colocasia sp. also proved this. In relation to explants and osmoticum, meristem and axillary bud could be conserved for 24 months while meristem-base died after 6 months. Mannitol as osmoticum @ 4% performed nicely to conserve Colocasia upto 24 months. Only meristem and axillary bud could be conserved for 24 months with the use of 4 % mannitol. But other level of mannitol remained culture alive for varying periods (6 to 12 months). After 24 months, the plant height was 6.5 cm for the meristem and 6.4 for axillary bud.Bangladesh J. Agril. Res. 41(1): 67-74, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Effect of weed extracts against pulse beetle, Callosobruchus chinensis L.
           (Coleoptera: Bruchidae) of mung bean

    • Authors: MA Ahad, MK Nahar, MR Amin, SJ Suh, YJ Kwon
      Pages: 75 - 84
      Abstract: The n-hexane extracts of the weeds ‘bhatpata’ Clerodendrum viscosum, ‘kashiature’ Cassia tora, ‘dhakishak’ Dryoptris filix-max, ‘bonmorich’ Croton bonpalandianum and ‘ghagra’ Xanthium strumarium were used to evaluate their effectiveness for suppressing pulse beetle, Callosobruchus chinensis reared on mung bean Vigna radiata grains. The investigations were done with 1, 2 and 4% n-hexane extracts of the weeds and an untreated control. The weed extracts exhibited considerable effectiveness which varied with weed species, concentrations and exposure durations. The higher concentrations showed the higher rate of insect mortality, fecundity, adult emergence inhibition, and grain protection. The LC50 values of the extracts ranged from 5.3 to 7.8, 4.7 to 6.5 and 4.1 to 6.0 g/100 ml at 24, 48 and 72 hours after treatment, respectively. The fecundity inhibition varied from 31.7 to 78.7%, adult emergence inhibition from 33.8 to 81.1%, and grain damage inhibition from 10.3 to 60.1% when ‘bhatpata’ with concentration of 1 g/100 ml and ‘ghagra’ with concentration of 4g/100 ml were applied, respectively. Among the tested weeds, ghagra (4g/100 ml) showed better efficacy against C. chinensis compared to other tested extracts and may be suggested to control pulse beetle and protection of mung bean grains.Bangladesh J. Agril. Res. 41(1): 75-84, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Responses of garlic to zinc, copper, boron and molybdenum Application in
           grey terrace soil of amnura soil series

    • Authors: MN Yousuf, MM Hasan, S Brahma, Deeder Sultana, AHM Fazlul Kabir
      Pages: 85 - 90
      Abstract: A field experiment was conducted at the Spices Research Centre, Shibgonj, Bogra, Bangladesh during rabi (winter) seasons of 2008-09 and 2009-10 to determine the requirement of Zn, Cu, B and Mo of garlic (BARI Garlic 2) along with a blanket dose of cowdung 5 t, 100 kg N, 40 kg P, 100 kg K and 30 kg S/ha for achieving satisfactory bulb yield of this crop. Different levels of zinc (0, 1.0, 1.5, 3.0 and 4.5 kg/ha), copper (0, 0.5, 1.0 and 1.5 kg/ha), boron (0, 1.0, 2.0 and 3.0 kg/ha) and molybdenum (0, 0.5 and 1.0 kg/ha) were distributed in the plot. The experiment was tested in randomized complete block design with three replications. The positive impact of application of those nutrients plant height, number of leaves per plant, cloves per bulb, diameter and weight of bulb and yield of garlic up to a moderate level of Zn3.0Cu1.0B3.0Mo1.0 kg/ha. The highest bulb yield (4.87 t/ha in 2008-09 and 6.6 t/ha in 2009-10) was obtained from Zn3.0Cu1.0B3.0Mo1.0 kg/ha and yield was declined with higher dose of these elements except Mo. The fertilizer treatment Zn3.0Cu1.0B3.0Mo1.0 kg/ha was observed to be the best suitable dose for garlic production on Grey Terrace Soil of Amnura Soil Series under AEZ-25 (Level Barind Tract) of Bangladesh.Bangladesh J. Agril. Res. 41(1): 85-90, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Response of N, P and K on the growth and flowering of hippeastrum
           (Hippeastrum hybridum Hort.)

    • Authors: MK Jamil, M Mizanur Rahman, M Mofazzal Hossain, M Tofazzal Hossain, AJM Sirajul Karim
      Pages: 91 - 101
      Abstract: An experiment was conducted at the Horticultural Research Field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur during September 2008 to May 2009 to determine the response of hippeastrum (cu. ‘Apple Blassom) to different combinations of nitrogen, phosphorus and potassium levels. There were 14 treatment combinations comprising four levels of nitrogen viz. 0, 100, 200, and 300 kgha-1; five levels of phosphorus viz. 0, 200,300, 400 and 500 kgha-1 and five levels of potassium viz. 0, 100, 200, 300 and 400 kgha-1 with an exclusively Cowdung treatment at the rate of 10 tha-1 . The experiment was laid out in a Randomized Complete Block Design with three replications. The growth and flowering parameter of hippeastrum were significantly influenced by combined application of N, P & K.The highest values in respect of leaves per plant (8.6), leaf breadth (5.4 cm), number of plants per bulb (3.07), flower scape per plant (2.07), flowers per scape (4.2), length and diameter of flower (14 cm x 13.83 cm), flower scape (43.33 cm x 29.37 cm) and flowering duration (10.7 days) were observed with N200P400K300. The same treatment showed earliness in days to flower scape emergence (172.3 days), days to flower bud appearance (185.3 days) and days to first flower open (189.3 days). The biggest flower (14.00 cm x 13.83 cm), longest flower scape (43.33 cm), maximum number of flowers per scape (4.20), and maximum flowering duration (11.5 days) were also exhibited by the treatment N200P400K300 .The control treatment (N0P0K0) recorded the lowest values except days to first leaf emergence, days to flower scape emergence, days to flower bud appearance and days to first flower open.Bangladesh J. Agril. Res. 41(1): 91-101, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Field performance of BARI urea super granule applicator

    • Authors: MA Hoque, MR Karim, MS Miah, MA Rahman, MM Rahman
      Pages: 103 - 113
      Abstract: Field performance of BARI Urea Super Granule (USG) applicator was evaluated on BARI research stations (Gazipur, Pabna, and Barisal) and farmer’s field (Pabna, Barisal, Magura,Narshingdi,Jhenadah, Sirajgang, Rajbari and Jhalkathi) during the boro season of 2012-13. The applicator was tested with four treatments- application of USG by hand (165 kg/ha), application of USG by BARI USG applicator (165 kg/ha), application of prilled urea at USG rate (165 kg/ha) and application of prilled urea at farmers practice. In the farmer’s field, USG applicators were evaluated with the traditional broadcasting of granular urea. Similar yield of rice was obtained from machine and hand application of USG in all locations. Higher yield of rice was obtained from USG than granular urea. During field test, average field capacity and efficiency of the applicator were 0.138 ha/h and 81%, respectively. Considering custom hiring, the net income per year was Tk. 71750 and the payback period was 3 days. The price of the applicator is Tk. 3500.Bangladesh J. Agril. Res. 41(1): 103-113, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Assessment of microbial quality of water in popular restaurants in Sylhet
           city of Bangladesh

    • Authors: Ayesha Sarker, Sharmista Dash, Md Mozammel Hoque, Sultan Ahmed, Md Rayhan Shaheb
      Pages: 115 - 125
      Abstract: Microbial contaminations of drinking water constitute a major burden on human health. Interventions to improve the quality of drinking-water provide significant benefits to health. An assessment of microbial quality of water in the samples obtained from different popular restaurants of Sylhet City Corporation, Bangladesh were analyzed in the laboratory. Our aims were to find out the microbial properties of water, to analyze the potable water qualities of the restaurants and also to compare it with different standards to assess the health risk of people. The microbial tests viz. MPN, TVC and total coliform test were studied. Results revealed that all the water samples were fecal contaminated and had a great chance of contamination by other pathogenic bacteria. Results indicated that most of the samples were significantly positive to MPN test and TVC bacteria were highly significant. The risk score for coliform bacteria also remarked high risk for human health according to WHO standards and were not suitable as potable water. Our recommendations are therefore, water supply authority including restaurant owners should take necessary steps for the maintenance of microbial quality of water and microbial assessments should be done very often to leading a hygienic water distribution environment of the city.Bangladesh J. Agril. Res. 41(1): 115-125, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Effect of sowing time and variety on seed germination and vigour index of
           wheat

    • Authors: Md Rayhan Shaheb, Md Nazmul Islam, M Siddikur Rahman, Ashratun Nessa
      Pages: 127 - 136
      Abstract: Experiments were carried out in research field and laboratory of Seed Technology Division, Bangladesh Agricultural Research Institute, Gazipur during rabi season of 2008-09 and 2009-10 to find out the effect of sowing time and variety on seed germination and vigour index of wheat after harvest of the crop. There were two sets of treatments, comprising a) three dates of sowing viz. 20 November, 5 December and 20 December; and b) three varieties viz. ‘Bijoy’, ‘Sufi’ and ‘Prodip’. Split plot design and complete block design were followed in field and laboratory experiments, respectively. Results revealed that the highest seed germination 93.33% was recorded in ‘Prodip’ sown on 20 December, 2008 and ‘Bijoy’ sown on 5 December, 2009. However, all the varieties showed more than 83% seed germination at all dates of sowing of wheat. The highest vigour indices, 1.53 and 1.41 were found in the seeds of ‘Sufi’ sown on 20 November in both the years of 2008 and 2009, respectively.Bangladesh J. Agril. Res. 41(1): 127-136, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Trend and output growth analysis of major fruits in Chittagong region of
           Bangladesh

    • Authors: M Jamal Uddin, SR Dey, Tahmina Taslim
      Pages: 137 - 150
      Abstract: The study analyzed the trends, growth rates of area, production and yield of major fruits in Chittagong region and identified factors contributing to output growth during 1993/94-2009/10 using secondary data. The fruits under study were mango, jackfruit, litchi, guava, banana, papaya, ber, pomelo, pineapple, watermelon, lime and lemon. The study revealed that the area of all fruits increased over the period except banana, ber, pomelo and water melon. The highest increase in area was estimated for guava (131.6%) and the lowest for jackfruit (6.4%). Similarly, the production of all fruits over the period was increased except banana and pineapple. The average annual growth rates of area, production and yield for all fruits were found to be positive in all periods (i.e, period I: 1993/94-1997/98; Period II: 1998/99-2003/04, and Period III: 2004/05- 2009/10). But the magnitude of the growth rates of area for all fruits varied significantly. The growth rates of area for mango, jackfruit, litchi and pineapple were increased impressively and significantly. This might be due to the adoption of improved variety and management practices by the farmers. The growth rate of area, production and yield of banana decreased drastically over the period due to absence of modern variety of banana and lack of improved management practices in the region. The growth rates of production for mango were found to be highest in the period III (2004/05-2009/10). But the growth rate of yield of mango was found to be decreased significantly over the periods due to improper management against the pest and diseases by the farmers. The highest percentage of output changed was observed in Banana (149%) followed by pineapple (106%) and jackfruit (83%) between the periods. The lowest percentage of output changed was found in guava (11.7%). The contribution of area was the highest in changing output for mango, jackfruit, litchi, guava, ber, pomelo, watermelon, lime and lemon. The contribution of yield was the highest for banana (135.57%), papaya (76.92%) and pineapple (158.62%) for changing output indicated that the increased area was more responsible for changing in output growth of selected fruits. To increase the growth rate of fruits, improved variety and management practices should be disseminated through undertaking special programme and strengthening research-extension linkage in the Chittagong region.Bangladesh J. Agril. Res. 41(1): 137-150, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Effect of flooding on growth and yield of mungbean genotypes

    • Authors: MR Amin, MA Karim, MR Islam, S Aktar, MA Hossain
      Pages: 151 - 162
      Abstract: The field experiment was carried out with some selected mungbean genotypes viz. IPSA-13, VC-6173A, BU mug 2, BARI Mung-5 and IPSA-12 to observe the effect of 4-days flooding on their growth and yield of mungbean under field conditions at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during September to November, 2011 maintaining 3-5 cm standing water at 24 days after emergence. Days to flowering and maturity delayed in flooded plants over control depending on the genotypes. Flooding significantly reduced Total Day Matters (TDM), number of pods per plant, seed size and seed yield of the mungbean genotypes over control. Considering higher seed yield, larger seed size and less yield reduction relative to control VC-6173A, BU mug 2 and IPSA-13 were found tolerant to soil flooding condition.Bangladesh J. Agril. Res. 41(1): 151-162, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Nitrogen fixating ability of mungbean genotypes under different levels of
           nitrogen application

    • Authors: MA Razzaque, MM Haque, MA Karim, ARM Solaiman
      Pages: 163 - 171
      Abstract: A pot culture experiment was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during kharif II, 2012 to evaluate the nodulation, biological nitrogen fixation and yield potential of genotypes of mungbean under varying levels of N application. There were 10 mungbean genotypes viz. IPSA 12, GK 27, IPSA 3, IPSA 5, ACC12890055, GK 63, ACC12890053, BU mug 4, BARI Mung 6 and Binamoog 5, each genotype treated with six levels of N (0, 20, 40, 60, 80 and 100 kg N ha-1) . Among the genotypes, the IPSA 12 at 40 kg N ha-1 produced the maximum number of nodules (14.54 plant-1) as well as the highest nitrogen fixation (2.684 mmol C2H4). This resulted in the highest seed yield (14.22 g plant-1). The genotype ACC12890053 recorded the lowest nodulation (6 plant-1), nitrogen fixation (1.134) and seed yield (7.33 g plant-1).Bangladesh J. Agril. Res. 41(1): 163-171, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Genetic variability, character association and path analysis in maize (Zea
           mays L.)

    • Authors: S Begum, A Ahmed, SH Omy, MM Rohman, M Amiruzzaman
      Pages: 173 - 182
      Abstract: Twenty-two maize hybrids were evaluated to find out their variability, character association and path coefficient of grain yield and its component characters. Significant differences were found among the genotypes for the characters studied. Ear length and grain yield (t/ha) had moderate genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV), but the had the low environmental co-efficient of variation (ECV). The heritability for all the characters was high. The characters viz. plant height, ear height and 1000-grain weight, showed high heritability along with high genetic advance. Ear length, ear diameter and kernel per row had highly significant positive correlation with grain yield. However, the deviations between genotypic and phenotypic correlation and magnitude of environmental correlation suggested considerable influence of growing environment in expressing almost all the characters. Path coefficient analysis revealed that plant height (0.659), ear length (0.934) and kernel-rows per ear (0.715) had highly significant positive direct effect on grain yield suggesting their importance during selection. Simultaneous restricted selection should be done for number of kernel rows per ear.Bangladesh J. Agril. Res. 41(1): 173-182, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
  • Effect of various cereals on the development of Corcyra cephalonica
           (Stainton) and its egg parasitoid Trichogramma chilonis (Ishii)

    • Authors: M Nasrin, MZ Alam, SN Alam, MRU Miah, MM Hossain
      Pages: 183 - 194
      Abstract: Eight types of cereals viz., wheat grain, chopped wheat, paddy grain, rice grain, maize grain, chopped maize, rice bran, mixture of rice bran and chopped rice were fed to observe the development parameters like egg, larva, pupa and adult stages of Corcyra cephalonica (stainton) for three consecutive generations. The parasitism efficiency of Trichogramma chilonis (Ishii) was also evaluated on the resultant host eggs of C. cephalonica. The C. cephalonica revealed the highest number of eggs (115.6 female1), higher hatchability (92.9%), extented larval duration (45.9 days), increased larval weight (0.058 gm), survival rate (88.3%), adult emergence rate (93.5%), and male and female longevity (7.7, 7.2 days respectively) when they were reared on chopped wheat. On the other hand, the lowest number of egg was found on paddy husk (29.2 female-1). The lowest hatchability (45.6%), larval duration (45.9 days), larval weight (0.029gm), and survival rate (38.2%), pupal duration (17.9 days) adult emergence (42.0%), male and female longevity (4.8 and 4.7 days respectively) were found on paddy husk. The effect of food materials also reflected on the parasitism efficiency of the egg parasitoid T. chilonis. The highest percent egg parasitization was done by the T. chilonis on the host eggs, reared on chopped wheat (94.8±0.07%) followed by wheat grain (82.5±0.08%) and chopped maize (73.8±0.09%). On the other hand, the lowest parasitism was obtained when the larvae were reared on paddy husk (42.2±0.14 %) and paddy grain (48.8±0.05 %).Bangladesh J. Agril. Res. 41(1): 183-194, March 2016
      PubDate: 2016-05-09
      Issue No: Vol. 41, No. 1 (2016)
       
 
 
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