AGROCHEMICAL PROPERTIES OF LIGHT GRAY FOREST SOILS AND PRODUCTIVITY OF WINTER RYE
The paper presents the regional statistical characteristic of analytical and morphometric properties of the pre-vailing light-gray forest agrogenic soils and dynamics of productivity of winter rye during 1967-2009. It is estab-lished that the overall nutrition balance is positive, while for phosphorus it is plus 15.4 kg, nitrogen - plus 4.7 kg, potassium negative - a minus of 16.5 kg. As an example, a background zone of light-grey forest soils shows changes in agrochemical condition through economic activities. This regularity affects the dynamics of the yield of winter rye district. The actual yield of winter rye increased from the beginning of observation to the last years, with maximum rate of 31.9 t/ha. However, in recent years there is a downward trend in yields of all crops, includ-ing winter rye. Decreased the yield of winter rye by area record sliding her for 11 and 22 years, which is connect-ed with a negative balance of macronutrients in agriculture during this period.