MOLYBDENUM UPTAKE, DISTRIBUTION AND ACCUMULATION IN BEAN-PLANTS

The response of bean plants to different levels of molybdenum (Mo) in nutrient solution was investigated-the processes of uptake, distributi on and accumulation of Mo. This experiment showed the behaviour of Mo in bean plants. Mo uptake depended on the Mo concentration in solution and Mo content in roots, stems and leaves increased as the time of tr eatment increased. It seemed to exist a metabolic mechanism for limiti ng Mo uptake when Mo availability for roots increased. We have confirm ed the relationship between Mo distribution in plant and nitrogen meta bolism. The high values of Mo accumulated in plant did not cause visua l damages to bean plants.