THE USE OF MICRONUTRIENTS IN COMMON BEAN CROP CULTIVATED UNDER NO-TILLAGE SYSTEM

This work was conducted in Mandaguari Agropecuaria Farm in the year of 2003, located in the city of Indianopolis-MG, with the objective to evaluate the application effect of micronutrients in common bean crop, in cultivated area for more than eight years under no-tillage system. The experimental design used was entirely randomized with four blocks and eight treatments, being them: micronutrients free checks control; Co e Mo, in the following doses of 0,25 and 60 g ha(-1); Mo, B, Zn, Mn, Cu, being the Mo in doses of 44 g ha(-1) and the rest in doses (kg ha(-1)) of 0,80 for B, 4,00 for Zn, 0,88 for Mn, and 0,35 for Cu; Zn in dose of 5,0 kg ha(-1); B in dose of 3,0 kg ha(-1); Cu in dose of 3,0 kg ha(-1); Mn in dose of 5,0 kg ha(-1); and cocktail of all micronutrients (application of Co, Mo, Zn, B, Cu and Mn). The variables analyzed were: N and micronutrients foliar levels, weight of 100 grains (g), yield (kg ha(-1)) and mironutrient levels on soil (after harvesting). Increases in micronutrient levels on soil were not observed. Foliar levels of micronutrients only varied in relation to Co. For the variable of yield, it can be concluded that the treatments with Zn, Co and Mo gained the best results.