AGRONOMIC PERFORMANCE OF CORN ON THE COB GROWN ON RESIDUAL ORGANOMINERAL FERTILIZATION USED IN INDUSTRIAL TOMATO CROP

The study evaluated the agronomic performance of corn on the cob grown on residual organomineral fertilization used in the industrial tomato crop. The randomized block design was used, with three replications and eight treatments as follows: control (without fertilizer application); mineral fertilizer; cattle manure; organomineral with cattle manure + MAP (monoammonium phosphate); chicken manure; organomineral with chicken manure + MAP; broiler litter; and organomineral with broiler litter + MAP. All of those treatments were applied to the tomato crop that preceded the corn on the cob. After the tomato harvest, maize was sown in the same tomato growing row. Growth variables of corn on the cob plants and ears were evaluated. The corn on the cob grown in areas with residues of chicken and cattle manure, used as fertilizers in the tomato crop preceding the maize crop, resulted in a number of commercial ears similar to when mineral fertilizer was used. The same similar results were obtained for ear quality and yield. The use of organic fertilizers in the industrial tomato crop presented high viability, which made possible to replace the use of mineral fertilizers in the subsequent green maize crop.