title: Field evaluations of nuclear polyhedrosis viruses from the cabbage looper, Trichoplusia ni.
mesh_terms: D000818:Animals; D005069:Evaluation Studies as Topic; D007300:Insect Control; D007304:Insect Viruses / Q000472:pathogenicity*; D007313:Insecta; D007814:Larva; D013045:Species Specificity