ARRANGEMENTS PRODUCTIVITIES HYBRID CORN THROUGH AND NITROGEN PHOSPHATE FERTILIZATIONS

Abstract

ABSTRACT: Corn (Zea mays L.) is one of the most important cereals in the world; it represents the base of the food and feed. This work aimed to evaluate the productivity of corn in two cropping systems (intercropping with grass and single) according to the fertilizers used: nitrogen and phosphorus. For this study was developed in the IFPA Campus Castanhal under Yellow dystrophic Oxisol in dryland system. Were evaluated phosphate and nitrogen fertilizers, two corn hybrids, and the 30F80 30P70 in two cropping systems, single and intercropped with Brachiaria brizantha cv. Marandú experiment in a randomized block design with four replications. The results of grain yield of maize showed that there were differences among the treatments in this study. The results of grain yield showed up higher when phosphate fertilizers were used, as with nitrogen fertilization coverage were reached 4316.75 kg ha-1, however with the application of phosphate fertilizer at planting, 300 kg P2O5 ha-1. The use of phosphate fertilizer resulted in the best grain yield of maize in the conditions of this study. KEY-WORDS: Crop-livestock integration, soil fertility, Zea mays L.