Milho consorciado com braquiária em diferentes espaçamentos de cedro australiano em sistema ILPF

Abstract

The exploration of areas in an integrated crop-livestock-forest system seeks greater environmental adequacy and greater economic viability in agricultural and forestry activities. Thus, the objective of the experiment was to evaluate the effect of different spacing of Australian cedar, intercropped with Urochloa, on corn crop. A randomized block design in a 2x4 factorial scheme was used, with corn grown in the presence and absence of Urochloa ruziziensis in four different cedar spacings (3x6, 3x9, 3x12 and 3x15 m). Plant growth characteristics, yield components and corn grain yield were evaluated. Wider spacing between the cedar lines favors the growth characteristics in plant height and height of insertion of the first ear. The spacing between cedar rows of 6 and 9 m favored the increase in the number of grains per ear, ear diameter and grain mass per ear. Greater corn grain productivity is achieved in cultivation without intercropping and in the greater spacing between the cedar rows. When intercropped with Urochloa, higher maize grain yields are obtained in the 12 m spacing between cedar rows.