The micronutrient sources usually have low availability in the soil, and it is expected that the use of chelated sources increase their absorption. The objective of this work was to compare chelated and sulfate fertilizer formulations at varied doses over common bean crop and their zinc and copper micronutrient absorption. The experiment was carried out under greenhouse in the Federal University of Uberlândia. The chelated sources and sulfate fertilizers were applied at 0, 20, 40, 60 and 80 mg dm-3 doses. They were performed in duplicate 3 kg soil pots in a completely randomized design and a 5 x 2 factorial scheme. The "Pérola" variety was sown; and, in 15 days after emergence (DAE) there was thinning, leaving two plants per pot. The seeds were sown on April 9th, 2010 and plants were cut when more than 50% was at R5 stage. The chelated source application significantly increased the available Cu content in the soil and plant. The sulfate source was not efficient to provide Cu neither to the soil nor to the plant. The Zn evaluated sources did not differ in its availability in soil, but its plant uptake was higher when using a sulfate source.
Phaseolus vulgaris L.; Cu and Zn; EDTA chelate
