RESIDUAL EFFECTS OF LIMING WITH CARBOCALK ON MAIZE AND WHEAT STATUS

Field experiment with increased rates of carbocalk (39% CaO: t ha-1= 0, 15, 30, 45, 60 and 90) was established in autumn 2000. As affected by liming yields were increased up to 10% (maize: the 2006 growing season) and up to 40% (wheat: the 2006/2007 growing season). In general, leaf (ear-leaf at silking) and grain mineral composition of maize was more or less depended on liming. For example, the most significant influences of liming was found for leaf-P, -Mg,-Mn and –Zn (0.28 and 0.40% P, 0.13 and 0.22% Mg, 254 and 92 mg Mn kg-1, 28 and 19 mg Zn kg-1, for control and liming, respectively). Also, liming influenced significantly on number of ears in m2(490 and 595, respectively).