The following paper presents results on the influence of liming and NPK fertilization on yield and boron content in the grain of spring barley and winter wheat grown on loessial soil. The experiment was set in the Rzeszów Foothills (SE Poland), in a field occupied by controlled fertilizer experiment, according to a randomized block design in four replicates. The average grain yield of spring barley and winter wheat was higher after the liming treatment. For most objects, the NPK fertilization, regardless of liming, significantly increased the grain yields as compared with the trials without fertilization. The highest grain yields were obtained both in non-limed and limed objects after the application of the basic nutrition level (N1P1K1). The liming applied, compared to objects without this treatment, considerably increased the boron content in the grain of spring barley (from 1.21 to 1.58 mg kg-1 DM) and winter wheat (from 1.49 to 1.73 mg kg-1 DM). Limed objects revealed the average values of boron bioaccumulation coefficients for barley and wheat grain (3.1 and 4.1, respectively) higher than achieved in non-limed objects (2.0 and 2.4, respectively). Mineral nutrition, regardless of liming, affected an increase in the boron concentration only in winter wheat grain. The highest boron content (2.25 mg kg-1 and 1.89 mg kg-1), as compared to the control, was recorded in the objects where fertilization was applied (N1P1K0) and (N0P1K1). There was a decrease in the boron content in spring barley grain in the majority of fertilization objects.

24.3.2019