Specht, A. and Corseuil, E. 2002. Evaluation of caterpillar populations and natural enemies in the ryegrass with sweeping net. Pesquisa Agropecuaria Brasileira. 37, 1 (Jan. 2002), 1–6. DOI:https://doi.org/10.1590/S1678-3921.pab2002.v37.6302.