The effect of manure and mineral fertilizers with nitrogen, phosphorus and potassium on coffee yield, was evaluated with a 2(4) factorial experiment, Bourbon Vermelho variety, conducted on a Latosolic B "Terra Roxa" at Ribeirão Preto, and on a Red Yellow Podzolic at Mococa, State of Sao Paulo, Brazil regions. Twelve years of grain productions were analised in three periods of four years each. The manure effect upon coffee yield was significant on both experiments and high on the Red Latosolic Soil. Nitrogen showed high effect over the production also on both experiments and was higher on the Red Yellow Podzolic Soil. The effect of potassium was small on the Latosolic and in the Red Yellow Podzolic Soil. Potassium did not show any effect due to high level of natural potassium of the soil.
coffee; Bourbon Vermelho; mineral fertilization; organic fertilization