Hairy vetch residues in kill covering of the soil affect the incidence of weeds and the corn yield

biological competition cobertura do solo competencia biológica competición vegetal compétition biologique compétition végétale control cultural crecimiento crescimento croissance cultural control emergencia ervilhaca growth lutte culturale malezas mauvaise herbe milho palha plant competition produtividade vicia weeds zea mays