METHOD: Test Diet CONDITIONS: Field METHOD NARR: Accessions were planted in the field and examined for defoliation with counts of larvae and adults present monitored over a three season period. RESULTS NARR: Fine screening revssions previously identified as uniformly and highly resistant some genotypes deviated significantly from the accession mean for one or more resistance parameters. The heterozygosity indicates a less than optimal breeding vault counts were not useful in gauging differences in CBP resistance among accessions or genotypes. Number of larvae best differentiates among genotypes because larval counts combine the effects of oviposition and survival.