The Evaluation of Critical Levels of Zn in Leached Chernozem Using Barley and Field Beans as Test Plants
The migration patterns of Zn in soil-plant system in leached chernozem as related to metal concentration in soil were studied in a greenhouse experiment. The critical levels (tresholds) of Zn content in soil that resulted in excess of Zn maximum permissible level in cash crops were determined using barley and two varieties of field beans as test plants. The dependency analysis [Zn]plant - [Zn]soil showed that zinc accumulation in barley green mass was 3.7 times more than in broad bean variety “Yantarnye” and 5 times more than in broad bean variety “Orletskie”. Zinc accumulated 2.8 times more in barley grain than in seeds of the broad beans “Yantarnye” and 3.3 times more than in seeds of the broad bean variety “Orletskie”.