Insecticide effects of Ruta graveolens, Copaifera langsdorffii and Chenopodium ambrosioides against pests and natural enemies in commercial tomato plantation - doi: 10.4025/actasciagron.v33i1.5900. Acta Sci. Agron. 2011;33(1):37-43. doi:10.4025/actasciagron.v33i1.5900