[Radionuclides 137Cs and 90Sr accumulation in perennial feed grasses yield at potash fertilizers application on peat soil]
2007
Ivashkova, I.I., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In research in 2004-2006 conditions of moistening have had favorable influence on productivity of grasses, but more damp conditions in 2006 promoted to radionuclides accumulation by grasses. The correlation analysis of data of three year research has shown the presence of weak direct correlation communication between values of coefficient of proportionality (CP) 137Cs and the conventional index of providing with moisture GTK (г=0.23), CP 90Sr and GTK (г=0.19). Weather-climatic conditions of the vegetative period have rendered more significant influence on the level of productivity. The correlation factor between size of productivity and values of GTK has made 0.63. The presence of negative correlation communication between values CP137Cs and size of productivity (r =-0.49), CP 90Sr and size of poductivity (г =-0.48) is established. For years of research there was an increase in the content of mobile potassium in peat soil in variants with to one-component potassium application, phosphorus and potash combinations and full mineral fertilizer up to 540-1020 mg/kg soil. The presence of close negative correlation communication of values of CP 137Cs and content of mobile potassium in soil (г =-0.76), CP 90Sr and content of mobile potassium in soil (г =-0.74) is established
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