ON THE POTASSIUM STATUS OF AGRODERNOVO-SUBZOLIC SOILS IN SPRING IN CANOLA CROPS

The article presents the results of studies on the effect of potassium chloride and potassium sulfate on the potassium status of agro–turf–podzolic sandy loam and light loamy soil in spring rapeseed crops. It was found that the highest increase in the content of non-exchangeable potassium was observed when 120 kg/ha of potassium was applied to light loamy soil, increasing by 54–72 mg/kg, and by 18–30 mg/kg in sandy loam soil. The increase in mobile potassium content was less pronounced, amounting to 12–14 and 10–13 mg/kg.