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The Agriculturists
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  This is an Open Access Journal Open Access journal
     ISSN (Print) 1729-5211 - ISSN (Online) 2304-7321
     Published by Bangladesh Journals Online Homepage  [86 journals]
  • Cultural Characteristics, Virulence and In-vitro
           Chemical Control of Fusarium oxysporum f. sp.
           phaseoli of Bush bean (Phaseolus

    • Authors: SS Siddique, MKA Bhuiyan, R Momotaz, GMM Bari, MH Rahman
      Abstract: An experiment was conducted at Microbiology Laboratory of Plant Pathology Department, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) during 2007 to determine the virulence and variation in symptom development by Fusarium oxysporum f. sp. phaseoli isolates at different growth stages such as emergence and early vegetative stage, branching and rapid vegetative growth stage and early flowering stage of Bush bean, and in-vitro control of the pathogen with the selected fungicides. Eight isolates of this pathogen were collected from different pathology laboratory of BARI, BAU and BSMRAU. IS3 isolate collected from Bushbean seeds were found most virulent in pathogenicity test such as pre-emergence mortality, root rot, root lesion, leaf yellowing and wilting when this isolate was inoculated at different growth stages of bush bean. Four fungicides such as Vitavax, Rovral, Cupravit and Aimcozim were evaluated invitro to test the efficacy against isolate IS3. Aimcozim at different concentration (50-400 ppm) was found most effective in in-vitro evaluation.
      DOI : The Agriculturists 2014; 12(1) 103-110
      PubDate: 2014-08-06
      Issue No: Vol. 12 (2014)
  • Growth and Yield of Different Size-Seedling Tubers Derived from True
           Potato (Solanum tuberosum L.) Seeds as Influenced by
           Clump Planting

    • Authors: RN Rojoni, TS Roy, M D Sarkar, K Kabir, A Ullah
      Abstract: An experiment was conducted at the Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November 2010 to March 2011. Four levels of seedling tuber size, viz. 6-<7 g (S1), 7-<8 g (S2), 8-<9 g (S3) and, 9-≤10 g (S4) and three levels of seedling tuber, viz. 1 hill-1 (N1), 2 hill-1 (N2) and 3 hill-1 (N3) were laid out in a Randomized Complete Block Design with three replications. At harvest, the tallest plant (82.17 cm), highest number of leaves plant-1 (83.30), highest LAI (6.23), tubers weight hill-1 (128.90 g) and tuber yield ha-1 (25.78 t) were found in S4, while the lowest was in S1. On the other hand, the tallest plant (74.91 cm), highest number of leaves plant-1 (74.45), highest LAI (5.41), tubers weight hill-1 (123.95 g) and tuber yield ha-1 (24.79 t) were found in N3, while the lowest was in N1. The tallest plant (85.09 cm), highest number of leaves plant-1 (87.97), highest LAI (6.64), tubers weight hill-1 (138.35 g) and tuber yield ha-1 (27.67 t) were found in S4N3 and the lowest gross tuber yield ha-1(12.83 t) was from S1N1. Large seedling tuber with single seedling tuber hill-1 performed better.
      DOI : The Agriculturists 2014; 12(1) 111-121
      PubDate: 2014-08-06
      Issue No: Vol. 12 (2014)
  • Lead, Cadmium and Nickel Accumulation in Some Common Spices Grown in
           Industrial Areas of Bangladesh

    • Authors: HM Naser, S Sultana, M Manjurul Haque, S Akhter, RA Begum
      Abstract: Chemical analysis was conducted to determine the contents of lead (Pb), cadmium (Cd) and nickel (Ni) of three common spices viz, onion (Allium cepa), garlic (A. sativum) and chilli (Capsicum annuum) and their rhizospheric soils grown in polluted and non-polluted areas of Gazipur city in Bangladesh. Plant and rhizospheric soil samples were collected from: (i) directly polluted (Kaliakoir, Konabari, Gazipur), (ii) indirectly polluted (Donker bill, East Kaliakoir, Konabari, Gazipur), and iii) non-polluted (Bangladesh Agricultural Research Institute, Joydebpur, Gazipur) areas. Regardless of the locations, there were significant differences (P≤0.01) in Pb, Cd, and Ni concentrations in all spices ...
      PubDate: 2014-08-06
      Issue No: Vol. 12 (2014)
  • Efficacy of Botanicals against Helicoverpa armigera
           (Hubner) in Tomato

    • Authors: AKMZ Rahman, MH Haque, SN Alam, M Mahmudunnabi, NK Dutta
      Abstract: Four botanicals viz., mahogany oil, mahogany seed extract, tobacco leaf extract, neem seed kernel extract along with one synthetic chemical, cypermethrin were tested for their efficacies against H. armigera. The lowest fruit infestation, both by number and weight, was observed in neem seed kernel extract (27.15%, 22.29%) treated plot which was statistically similar to tobacco leaf extract (27.71%, 23.31%) treated plot and cypermethrin (28.87%, 25.44%) treated fruits. While no significant difference was found among mahogany oil, mahogany seed extract and control treatments. Percent infestation reduction over control was the highest in neem seed kernel extract (30.08%) followed by tobacco leaf extract (28.68%). The highest yield (18.14 t/ha) and the highest MBCR (2.99) were also obtained from neem seed kernel extract treated fruits.
      DOI : The Agriculturists 2014; 12(1) 131-139
      PubDate: 2014-08-06
      Issue No: Vol. 12 (2014)
  • A Study on the Different Forms of Potassium in the Low Ganges River
           Floodplain Soils of Bangladesh

    • Authors: MH Rahman, MM Farazi, MA Rahman, MMA Mamun, K Begum
      Abstract: Bangladesh has been divided into 30 Agro ecological Regions (AEZ). Agricultural research, and technology generation and transfer activities have been carried out on this basis. In context of the lack of enough information on different forms of potassium in the soils of the 30 AEZ, an attempt was made to study different forms of potassium of important soils of Bangladesh. As a part of this attempt, an experiment with ten soil samples representing nine different soil series (two of Gopalpur series and one each of Sara, Ishurdi, Ghior, Batra, Sukdebpur, Kumarkhali, Pakuria and Mehendigonj) of the AEZ-12, Low Ganges River Floodplain, was carried out in the Laboratory of the Department of soil science, Bangladesh Agricultural University, Mymensingh to find out the different forms of potassium. The highest value of water soluble potassium (0.08 cmol (+) K g-1) was obtained in Mehendiganj soil series and the lowest value (0.05 cmol (+) K g-1) was obtained in Gopalpur-1, 2 and Ishurdi soil series. The highest amount of exchangeable K (0.29 cmol (+) K g-1) was found in Batra soil series while the lowest (0.13 cmol (+) K g-1) in Gopalpur-1 soil series. The highest amount of available K (0.35 cmol (+) K g-1) was found in both Batra and Mehendiganj soil series while the lowest (0.18 cmol (+) K g-1) in Gopalpur-1 soil series. Considering 0.12 cmol (+) K g-1 as critical limit (BARC, 2012), all soils had available K above the critical level. The highest amount of non-exchangeable K (4.05cmol (+) K g-1) was found in Ghior soil series, while the lowest (2.52 cmol (+) K g-1) was in Mehendiganj soil series.
      DOI : The Agriculturists 2014; 12(1) 140-147
      PubDate: 2014-08-06
      Issue No: Vol. 12 (2014)
  • Usefulness of Banana (Musa paradisiaca) Wastes in
           Manufacturing of Bio-products: A Review

    • Authors: AKM Mohiuddin, Manas Kanti Saha, Md Sanower Hossian, Aysha Ferdoushi
      Abstract: Banana (Musa paradisiaca) is one of the most important gigantic and oldest cultivated fruit crops grown almost everywhere in Bangladesh. Presently, the banana pseudostem is hazardous waste in Bangladesh whilst it has been used in several countries to develop important bio-products such as fibre to make yarn, fabric, apparel as well as fertilizer, fish feed, bio-chemicals, paper, handicrafts, pickles, candy, etc. Looking at this perspective, entrepreneurs of Bangladesh should take this golden opportunity and do the needful for such kind of business. The land of our country is suitable for banana production. Its fruit is a healthy diet and demandable in local markets as well as the free waste could be utilized to produce such bio-products which will contribute directly in our national economy. Thus, farmers or entrepreneurs should cultivate more banana trees in unproductive lands of coastal and hilly areas for extra income from the useless wastes and ensure eco-friendly environment. Women can also be employed in production of different bio-products from banana wastes and thus, they can contribute to their livelihood improvement. In conclusion, this review on banana waste utilization will be of help to the farmers, entrepreneurs, planners, scientists as well as Bangladesh government to take proper initiatives in socioeconomic improvement of Bangladesh.
      DOI : The Agriculturists 2014; 12(1) 148-158
      PubDate: 2014-08-06
      Issue No: Vol. 12 (2014)
  • Evaluation of Three Botanicals, Bavistin and BAU-Biofungicide for
           Controlling Leaf Spot of Groundnut Caused by Cercospora
    and Cercosporidium personatum

    • Authors: MH Hossain, I Hossain
      Abstract: A study was conducted to evaluate the effectiveness of three selected botanicals namely leaf extract of Neem (Azadirachta indica), Debdaru (Polyalthia longifolia) and datura (black) (Datura metel) along with Bavistin (Carbendazim) and BAU-biofungicide (Trichoderma harzianum) against leaf spot disease (tikka) of groundnut caused by Cercospora arachidicola and Cercosporidium personatum at the Field Research Farm of Bangladesh Agricultural University, Mymensingh during 2009-10. The most effective treatments were Bavistin, BAU-biofungicide (seed treatment + spray), BAU-biofungicide (spray) and leaf extract of Neem. Bavistin increased pod and dry haulm yield by 53.51 and 24-80 %, respectively. Maximum pod yield and dry haulm weight were recorded under Bavistin. BAU-biofungicide (seed treatment + spray) produced the second highest pod and dry haulm yield followed by leaf extract of Neem and BAU-biofungicide (spray). BAU-biofungicide (seed treatment + spray) and leaf extract of Neem may be recommended for controlling leaf spot disease of groundnut.
      DOI : The Agriculturists 2014; 12(1) 41-49
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Evaluation of Yield and Yield Contributing Characters of Heat Tolerant
           Potato (Solanum tuberosum L.) Genotypes in Bangladesh

    • Authors: MH Rahman, MM Alam Patwary, H Barua, M Hossain, S Nahar
      Abstract: Eight heat tolerant CIP (International Potato Centre) potato genotypes along with BARI (Bangladesh Agricultural Research Institute) Alu-7 (Diamant) and one local variety (Dohazari Sada) were evaluated at Agricultural Research Station, Pahartali, Chittagong during 2011-12 to identify heat tolerant genotypes from varieties and CIP clones of potato. Diamant and Dohazari Sada and all the heat tolerant CIP genotypes were found to grow well up to 60 DAP (days after planting) against heat having healthy plants and no senescence was noticed. After that 61-100% plants died due to high temperature (29.8oC) depending on the genotypes. Genotype CIP 139 gave the highest yield (14.18 t/ha) and was comparatively less affected by heat than the other genotypes. The high dry matter (22.43 %) accumulated in the local variety Dohazari Sada.
      DOI : The Agriculturists 2014; 12(1) 50-55
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Participation Potential of Rural Women in Different Homestead Farm

    • Authors: MF Khatun, MK Hossain, KA Hossain, MM Rahman
      Abstract: The main purpose of the study was to determine the extent of participation of rural women in the cultivation of vegetables and fruit trees around the homestead areas. The study was conducted on married women of four selected villages of Raumari upazilla under Kurigram district. Data were collected from randomly selected 103 women by using pre-tested interview schedule during the month of May, 2013. In measuring the participation of rural women in homestead farm activities, cultivation of vegetables and fruit trees were considered as dependent variables. Each aspect consisted of 15 activities under three sub-headings. A three point Likert-type scale was used to measure each activity. The independent variables were measured by employing prevailing standard methods. Pearson’s correlation coefficient (r) was used in order to explore the relationships between the concerned variables. About 59 percent of the rural women had high participation in vegetables cultivation while only 10.68 percent of them had low participation in the cultivation of fruit trees. Among 15 statements of different aspects in relation to vegetables cultivation, tilling by spade was ranked first. In case of the cultivation of fruit trees, the highest proportion (46.60 percent) of rural women had medium participation and irrigation after planting was in the first position. Agriculture knowledge, attitude and innovativeness had positive relationship with the cultivation of vegetables. On the other hand, education, family income, cosmopoliteness behaviour and attitude had positive relationship with the cultivation of fruit trees.
      DOI : The Agriculturists 2014; 12(1) 57-67
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Efficacy of Microbials as Insecticides for the Management of Tomato
           (Lycopersicon esculentum) Fruitworm,
           Helicoverpa armigera (Hubner)

    • Authors: AKMZ Rahman, MA Haque, SN Alam, NK Dutta
      Abstract: The experiment was conducted at the experimental field of Entomology Division, BARI, Gazipur during Rabi 2007-08. Two microbial insecticides HaNPV @ 0.4ml/L and Bt @ 2g/L along with their combination were tested against H. armigera. The lowest fruit infestation, both in number and weight, was obtained from treatment HaNPV and Bt alternate spraying (11.78%, 9.64%), followed by Bt (13.25%, 10.85%) and HaNPV (17.67%, 13.11%). The highest fruit yield (16.92 t/ha) was obtained from HaNPV and Bt alternate spraying plots followed by Bt (16.65 t/ha) and HaNPV (14.73 t/ha). In case of MBCR, the highest MBCR was obtained from HaNPV and Bt alternate spraying (5.30) followed by HaNPV (4.46) and Bt (3.37).
      DOI : The Agriculturists 2014; 12(1) 68-74
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Pond Fish Farming under NGO Support and Individual Management: A
           Comparative Socioeconomic Study

    • Authors: MT Uddin, K Akhi
      Abstract: The study was conducted to compare the profitability of fish farming under NGO support and individual management and to evaluate the overall impact of NGO intervention on farmers’ income. A total of 120 farmers (60 for own management and 60 for NGO support) were selected following random sampling technique for data collection from both Mymensingh and Tangail District. The data were collected through direct interview from the selected fish farmers. Data were analyzed with a combination of tabular and functional analysis. The BCR was 1.9 for own management and 2.4 for NGO supported pond fish farming which shows that the fish farming is more profitable under NGO support. The Ravallion test results showed that the income was increased by the amount of Tk. 32500 due to NGO’s intervention. Cobb-Douglas production function analysis was done to determine the effects of variables on pond fish production. Out of six variables, three variables in case of own management and four variables in case of NGO support had significant impact on per acre output of fish production. The results of the efficiency computation indicated that labour, feed and lime and medicine were being underutilized and fingerlings and irrigation were being over utilized for own managed pond. Under NGO supported pond, labour, fingerlings and lime and medicine were being underutilized and feed and irrigation were being over utilized.
      DOI : The Agriculturists 2014; 12(1) 75-84
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Seed Quality of Stored Soybean (Glycine max L.) as
           Influenced by Storage Containers and Storage Periods

    • Authors: N Akter, MM Haque, MR Islam, KM Alam
      Abstract: An experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during April 2013 to June 2013 to study the effect of three storage containers (tin container, polythene bag and cloth bag); and five storage periods (0, 15, 30, 45, and 60 days) on the seed quality of soybean. The experiment was laid out in Completely Randomized Design (CRD) with four replications. The soybean seeds stored in tin container showed maximum germination capacity with high germination index, highest seedling growth, seedling dry weight per plant and vigour index. The seeds stored in cloth bag had the lowest seed quality during the testing period. The highest 1000-seed weight, moisture content, electrical conductivity, abnormal seedlings and number of dead seeds were recorded in cloth bag; where the equivalent lowest values were recorded in tin container. The moisture content, 1000-seed weight, electrical conductivity, number of abnormal seedlings and dead seeds were increased with the longer period of storage. In addition, germination index, seedling growth, dry weight per plant of soybean seedling, and vigor index decreased with the increase in storage period. Among the three containers, tin container was the best and the cloth bag was the worst storage container for soybean seed storage for long period.
      DOI : The Agriculturists 2014; 12(1) 85-95
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Attitude of the Rural Elite Farmers towards Extension Activities Performed
           by Personnel of Department of Agricultural Extension

    • Authors: M Arifullah, A Zahan, MM Rana, M Adil, Shamsunnaher Shamsunnaher
      Abstract: The main purpose of the study was to ascertain the attitude of rural elite farmers towards extension activities performed by Upazilla Agricultural Extension personnel of DAE and to explore the relationship between the selected characteristics of the respondents and their extent of attitude towards those extension activities under reference. The study was conducted in two unions, namely Ratanpur and Rasullabad covering 5 villages of Nabinagar Upazilla under Brahmanbaria District. Data were collected from the rural elite farmers using a pre- tested interview schedule during 15th May 2009 to 10th June 2009. It was found that the highest proportion (43.14%) of the respondents had moderate favourable attitude compared to 33.33 percent having high favourable attitude and 23.53 percent less favourable attitude. Pearson Product Moment Correlation (r) test was used to ascertain the relationships between the concerned dependent and independent variables of the study. Findings revealed that education, farm size, time spent for farm work, organizational participation, extension contact and knowledge on agriculture of elite rural farmers showed positive significant relationship while age and annual family income did not show any such relationship with their attitude towards extension activities performed by Upazilla Agricultural Extension Personnel of DAE.
      DOI : The Agriculturists 2014; 12(1) 96-102
      PubDate: 2014-07-19
      Issue No: Vol. 12 (2014)
  • Genetic Diversity in Sadajira Rice (Oryza sativa L.)

    • Authors: MZ Islam, MA Siddique, ESMH Rashid, MS Ahmed, M Khalequzzaman
      Abstract: Genetic diversity of 40 traditional Bangladeshi rice genotypes was studied under rainfed condition through Mahalanobis D2 statistic for grain yield and yield contributing characters. The genotypes were grouped into six clusters. The inter-cluster distances were higher than intra-cluster distances indicating wider genetic diversity among the genotypes of different clusters. The intra-cluster distances were lower in all the cases reflecting homogeneity of the genotypes within the clusters. The cluster VI contained the highest number of genotypes (18) and the clusters I and II contained the lowest (1). The highest intra-cluster distance was noticed for the cluster IV and lowest for cluster VI. The highest inter-cluster distance was observed between cluster I and IV, followed by cluster I and II, cluster I and III and the lowest between cluster III and IV. Regarding inter-cluster distance, the genotypes of cluster IV showed high genetic distance from all other clusters. The genotypes from cluster IV could be hybridized with the genotypes of other clusters for producing transgressive segregants. Based on canonical vector analysis, panicle number per plant and 1000 grain weight had maximum contribution towards genetic divergence. The highest cluster means for yield, filled grains panicle-1 and grain breadth were obtained from cluster VI. The highest means for plant height, flag leaf area, unfilled grains panicle-1, harvest index and the lowest growth duration were found in cluster I, while the lowest mean value for yield, grain length, 1000 grain weight, plant height and highest mean value for days to flowering and maturity were found in cluster II. The crosses between the genotypes/parents of cluster VI and cluster II, cluster VI and cluster V would exhibit high heterosis as well as higher level of yield potential. Therefore, more emphasis should be given for selection of the genotypes from clusters I, VI and V for future breeding program.  
      DOI : Agriculturists 2014; 12(1) 26-32
      PubDate: 2014-07-18
      Issue No: Vol. 12 (2014)
  • Somaclonal Variation in Potato (Solanum tuberosum L.)
           Using Chemical Mutagens

    • Authors: ME Hoque, MN Morshad
      Abstract: An experiment was conducted with three popular potato varieties viz. Cardinal, Diamant and Asterix to create somaclonal variation in potato. The chemical mutagens viz. Ethyl methane sulphonate (EMS), Methyl methane sulphonate (MMS), 5-Bromo Uracil (BU) and 2,4-D were used in three different concentration (1.0, 2.0 and 4.0 mg/L). Among them only 2,4-D regenerated callus in potato. Higher concentration (4.0 mg/L) of 2,4-D showed variant type of callus, which regenerated abnormal plantlet and some of the plantlets died within 45 days after inoculation. The higher concentration (4.0 mg/L) of EMS, MMS and BU showed huge abnormality on in vitro regeneration in all three varieties of potato. Thin stem, deformed shoot development and very less leaf formation were observed in 2.0 mg/L and 4.0 mg/L of EMS, MMS and BU. Due to toxic effect some of the plantlets died. The mutagen treated variants were acclimatized in plastic tray and subsequently in the field condition. It was noticed that, only 37.16% plants survived in natural field condition. Morphological characterization and yield potentiality of all somaclones were studied. It revealed that only one variants viz. SVP-53 showed higher yield as compared with two check varieties. The first generation mini tubers were kept for further research.  
      DOI :  The Agriculturists 2014; 12(1) 15-25
      PubDate: 2014-07-18
      Issue No: Vol. 12 (2014)
  • Socio-economic Factors Influencing Profitability of Rice Seed Production
           in Selected Areas of Bangladesh

    • Authors: MZ Hoque, ME Haque
      Abstract: Seed is the foundation of agriculture for enhancing crop production. The economic benefits from the improved quality seed production help scaling up the livelihood standard as well as nutritional status of the common people. The study was carried out in three districts namely Jamalpur, Gazipur and Manikganj to identify the socio-economic dimensions of the government seed production project beneficiaries persuading profitability of rice seed production. Data were collected through intensive survey of randomly selected 211 sample respondents using pre-tested interview schedule. To examine the profitability of rice seed production, the gross margin and cost benefit analysis were carried out. Co-efficient of correlation and multiple stepwise regressions were employed to find out the determinants of profitability in rice seed production. Rice seed production was not found to be so profitable as investment in rice seed cultivation can produce average BCR of only up to 1.44, where highest BCR was found in Jamalpur (1.58) compared to Manikganj (1.48) and Gazipur (1.26). The results revealed that socio-economic factors have a profound influence on profitability of rice seed production as these factors combined explained 54.9 percent variation. Farm size, contact with information sources, knowledge on quality rice production and age of the respondents were identified as significant contributors in profitability of rice seed production, whereas contact with information sources was the single most influential factor (24.6%). Therefore, steps may be taken so that the seed-growers could directly be linked with more information sources dealing with seed production and marketing through the government initiatives to boost up the production as well as to ensure appropriate price of the farmers’ home grown seed.
      DOI : The Agriculturists 2014; 12(1) 33-40
      PubDate: 2014-07-18
      Issue No: Vol. 12 (2014)
  • Study on the Productive and Reproductive Performances of BLRI-1 and BLRI-2
           Ducks in Bangladesh

    • Authors: MS Islam, H Khatun, MN Islam, S Faruque, MSK Sarker
      Abstract: A total of 887 ducklings of BLRI-1 duck genotype and 352 ducklings of BLRI-2 duck genotype were studied to measure productive and reproductive performances under intensive management. Data were recorded on body weight, egg production, egg weight, fertility, embryonic mortality, hatchability, feed intake, age at sexual maturity, body weight at maturity and egg weight at maturity. The fertility rate in BLRI-1duck was significantly (p<0.01) higher than that of BLRI-2 duck, while hatchability of BLRI-2 duck on fertile eggs were significantly (p<0.05) better compared to BLRI-1 duck. The embryonic mortality was significantly (p<0.01) higher in BLRI-2 duck than BLRI-1 duck. Duckling weight was influenced by egg weight (p<0.05) but difference in duckling: egg ratio was not significant (p>0.05). Hatching weight, 4th week and 12th week of age were significant (p<0.05) influent while the body weight of ducks at 8th week did not differ significantly (p>0.05) for BLRI-1 and BLRI-2 ducks, respectively. The least squares mean for age at sexual maturity were 158 days and 151.75 days, respectively for BLRI-1 and BLRI-2 ducks (p<0.05). BLRI-1 duck started to lay eggs almost one week late compared to BLRI-2 duck. Duck weight at sexual maturity, egg weight at first lay and egg production did not have significant (p>0.05) difference between genotypes. It may be concluded that BLRI-2 duck genotype is superior in terms of hatchability and age at sexual maturity to BLRI-1 duck genotype.
      DOI : The Agriculturists 2014; 12(1) 10-14
      PubDate: 2014-07-11
      Issue No: Vol. 12 (2014)
  • Evaluation of Yeast Saccharomyces cerevisiae and Algae
           Chlorella vulgaris as Diet for Rotifer
           Brachionus calyciflorus

    • Authors: B Khatun, R Rahman, MS Rahman
      Abstract: A study was conducted to evaluate the effect of yeast Saccharomyces cerevisiae and algae Chlorella vulgaris on the production of rotifer Brachionus calyciflorus. The Brachionus calyciflorus were cultured using four different types of diets: fresh Chlorella vulgaris (T1), yeast with fresh Chlorella vulgaris (T2), powder Chlorella vulgaris with fresh Chlorella vulgaris (T3) and yeast with powder Chlorella vulgaris (T4). We compared these diets to find out their potentiality on the population growth of Brachionus calyciflorus. The rotifers were cultured under natural environmental condition with continuous artificial aeration. Initial density of Brachionus calyciflorus were 8 individuals ml-1 (ind. ml-1). Water temperature and pH were measured during the culture period. Among the four different diets the fresh Chlorella vulgaris (T1) and it’s yeast combination (T2) gave satisfactory production of rotifer 73±9 and 67±8 ind. ml-1, respectively. However, processing of fresh Chlorella vulgaris to produce powder form declined the production ability of rotifer. The diet sample T3 and T4 containing powdered Chlorella vulgaris produced 48±9 and 25±6 ind. ml-1, respectively. So, the diet in combination of yeast and fresh Chlorella is suggested for the sustainable production of the rotifer Brachionus calyciflorus.
      DOI : The Agriculturists 2014; 12(1) 1-9
      PubDate: 2014-07-11
      Issue No: Vol. 12 (2014)
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