Peculiarities of accumulation and carrying-over of nutrients and heavy metals by soybean plants

The study of peculiarities of nutrients and heavy metals rotation in soybean crops showed that they are accumulated in soybean biomass very unevenly. Such elements as nitrogen, phosphorus, sulphur and molybdenum are accumulated in reproductive organs intensively therefore soils are exhausted very fast. Heavy metals and some microelements are accumulated in roots (Mn, Cd, Pb, and Cr) and remain in the field. And such elements as boron and potassium have average carrying-over and exhaust soils slower than nitrogen and phosphorus.