Pharmaceuticals, which are designed to be biologically active at low concentrations, found in surface waters, meaning aquatic organisms can exposed complex mixtures of pharmaceuticals. In this study, the adverse effects four pharmaceuticals, 17?-ethynylestradiol (synthetic estrogen), methotrexate (anticancer drug), diclofenac (nonsteroidal anti-inflammatory drug) and fluoxetine (antidepressant)...

in order to evaluate the effects of duck with azolla sp. on weed density and growth parameters in rice-duck farming system, an experiment was conducted at sari agricultural sciences and natural resources university during 2012. experiment was arranged in split plot based on randomized complete block design with three replicates. main plots were duck at four levels (control, 400, 800 and 1200 pi...