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This study estimates recreational benefits of the Dhaka Zoo by Individual Travel Cost Method (ITCM). The study estimates the benefits of operating the Zoo along with revealed visitors' willingness to pay to visit and enjoy the Zoo. The total annual consumer surplus from recreation of the Dhaka Zoo is estimated at approximately BDT 856.4 million (US$10.98million). Study has found that Various factors influence the value visitorsobtainedfrom the Zoo; these include travel cost, household income and the environmental quality of the Dhaka Zoo. Improvements in the overall quality of the Zoo is...

The genus Rhizobium play a important role in agriculture by inducing nitrogen-fixing nodules on the roots of legumes such as peas, beans, clover and alfalfa. The main aim of this research work was to observe the comparative growth characteristics of recently isolated Rhizobium spp. The strains such as BARI RLC-107, BARI RCA-220, BARI RVM-307, were collected from Bangladesh Rice Research Institute (BARI). Three Rhizobium strains nutritional uptake is same, but the growth rate of BARI RLC-107 is higher than other two strain. These strains are able to grow in different environmental and...