The impact of soil liming on the background of the long-term action and aftereffect of fertilizers on physicochemical properties of soddy-podzolic soil

Periodic liming of a soddy-podzolic soil for 50 years has resulted in a con siderable improvement of the indices of soil fertility, including the pH va lue, cation exchange capacity, buffer properties, exchangeable Ca2+ and Mg2 + percentages, the humus content, and the contents of phosphates and humate s of calcium. The aftereffect of lime lasts for 11 years and ensures high l evels of soil fertility if the soil is not treated with nitrogen and potass ium fertilizers during this period. The increased content of phosphates and humates of calcium in limed soil is due to a considerable decrease in the intensity of leaching processes.