Changes in the properties of a loamy Gleyic Cambisol as related to the saturation of crop rotations with rape

Abstract

Abstract A direct relationship was found between the saturation of crop rotations with spring and winter rape and the hydrolytic acidity (r = 0.706 and 0.752, respectively), the contents of the mobile (r = 0.708 and 0.901) and total sulfur (r = 0.630 and 0.760), and the humus content (r = 0.449 and 0.467) in a loamy Gleyic Cambisol and its barley yield after sowing of barley for two years (r = 0.604 and 0.612). A high feedback was found between the saturation of the crop rotations with spring and winter rape and the ratio between the contents of humic and fulvic acids (r = −0.840 and −0.930, respectively). More intense restoration of the agrochemical properties of the loamy Gleyic Cambisol up to their initial characteristics was shown to take place in the crop rotations with spring rape than in the test with winter rape