Concentration and accumulation of al and micronutrients by common bean (Phaselolus vulgaris L.) , in two soils subjected to compaction

Abstract

With the goal to observe the influence of the soil compaction on the concentration and accumulation of the Al and the micronutrients by 2 bean cultivars growing on soil samples of an Oxisol (LRT and an Alfisol (PVp), with and without fertilizer, a 3,8 liter pot experiment was carried out. It could be verified, at the end of the growing stage, a reduction of the con-contration and accumulation of the Al in the fertilized pots, and the increase in the not fertilized pots. In the roots occured a decrease on the accumulati on of Al in both fertilized and not fertilized soils. With increasing compaction, Cu presented a general tendency to increase in the shoots, and the other micronutrients (Zn, B, Fe, Mn) showed a specific behavior due to the soil type, the fertility level and the cultivar. At the end of the growing cycle, it could be verified a general tendency in increase on accumulation of Fe and B, ana decrease on Zn in the Oxisol, and decrease on the Mn, Zn and B accumulation in the Alfisol, considering the above ground part. In the roots all micronutrients decreased their accumulation.