PRODUCTIVITY AND PRODUCTION COMPONENTS OF FERTILIZED MAIZE WITH Cu AND NPK IN AN ARGISOIL

Abstract

Soil fertilizing deficiencies can be connected to one of the main responsible factors for the incapacity of maize growing expressing all its productive genetic potential. On this way, it was done a work with the purpose of evaluating the production components and the maize growing productivity due fertilizing with different dose of copper, nitrogen, phosphorus and potassium. This work has been accomplished in the municipality of Palotina–PR, in an typic hapludalf. The experiment was conducted on a delineation of arranged blocks on a 3x3 factorial scheme with 4 repetitions, constituted by 3 NPK fertilization doses: without fertilization (control), dose recommended (30:100:50 kg ha^-1); twice the dose recommended fertilization (60:200:100 kg ha^-1) and three doses of copper: 0,0; 5,0 e 10,0 mg dm^-3. About NPK fertilization the 60:200:100 kg ha^-1 dose, gave the best results. About fertilization with copper, a considerable increasing was not verified on the treatments for the evaluated components and productivity.