Resumen
The aim of this study was to evaluate the percentage of nitrogen (N) in the wheat grains, the nutrient content in leaf tissue of soybean and wheat and soybean yield due to the use of poultry deep-litter and mineral fertilizer. The experiment was conducted in Guaira, PR, in a randomized block design with two treatments and 10 repetitions. The treatments were: 3 t ha-1 of poultry deep-litter and mineral fertilizer. The N content in grain, grain yield and weight of 100 grains were evaluated in wheat crop. In turn, the nutrient contents in leaf tissue and grain yield were determined in soybean. The fertilization with poultry deep-litter did not interfere with the weight of 100 grains of wheat, but provided greater N accumulation in wheat grains, and higher yield. In soybean, poultry deep-litter manure and mineral fertilizer provided yields that did not differ each other. Regarding macronutrients, the soybean foliar analysis indicated higher N content for fertilization with poultry deep-litter while the contents of K, P, Ca and Mg remained unchanged.