Crescimento e produtividade do milho sob distintos espaçamentos e controles de plantas daninhas.

Abstract

The control of weeds is very important when the objective is achieved high yields, and especially corn one of the largest cereals produced in Brazil could not be different. The occurrence of weeds in plantations can have several negative aspects, among them as lower productivity, greater competition for nutrients, water and luminosity. The economic importance of corn is characterized by various forms of its use, ranging since from animal feeding to a high technology industry. Therefore, this work aimed to verify a corn productivity with different treatments of weeds under different crop spacing. It was used the experimental design was completely randomized in a 2 x 4 factorial scheme, with four replications, the treatments consisted of different culture spaces (single rows 0.30 mx 0.70 m and double rows 0.20 mx 0.20 mx (T1- control, T2- integrated control with mulch, associated to herbicides Atrazine + Soberan, T3- manual weeding, without control T4- chemical control with mixtures of herbicides (atrazine + Sober). The managements performed on weed control did with that growth and productivity had a significant increase, the better management was to mulch with chemical control.