EFFECT OF DEEP PLOWING ON THE FERTILITY STATUS OF BLACK SOLONETZ SOILS

Abstract

Field studies were established to measure the relative effectiveness of deep plowing and fertilization on the productivity of four Solonetz soil types in the Black soil zone, under quite similar climatic conditions. On three of the Solonetz soil types, fertilization was essentially as effective as deep plowing in stimulating productivity, and the effects of both treatments on crop chemistry were somewhat similar. The soil on which fertilization had little effect and deep plowing had a great effect had the most unproductive Bn horizon of any of the soils under study.