Fertilization of corn in agroecologic system production: agronomic performance of corn and fertility of soil
Keywords:
biofertilizer, intercropping legume species, cow urine, chicken manure, variety corn, Zea maysAbstract
The objective this work was evaluate the agronomic performance of corn crop and the chemical properties of soil in the agroecologic system, for four years. Treatments were arranged in a randomized complete block design with four replicates and five treatments: chicken manure (5 t/ha/year); biofertilizer “natural urea”; cow urine 10%; intercropping legume species with corn and control. There was significant interaction between treatments and years in corn yield. The highest yield was obtained with chicken manure use, in the four years. The treatments with "natural urea", cow urine and intercropping legume species not differed from the control. After four years occurred reductions in values of P, K and organic matter of the soil.
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