Mineral composition of soya beans cultivated in a cerrado acid soil, with two levels of liming

Abstract

Mineral nutrition problems on the soya bean crop in the cerrado region have been frequent, mainly due to the unbalanced liming and fertilization. Detection of problems can be done, in many cases, by the evaluation of chemical element rates in the plants. In this study chemical analyses were done to assess the rates of elements on foliar samples of soya beans from an experiment in a partly and fully limed acid soil, on the basis of soil analysis. Mn, Al, Zn, Fl, Cu and K showed reductions of 310, 102, 78, 61, 40 and 10%, contrasting with Ca and Mg, with increased rates of 12 and 21%, respectively, according to the level of liming.