SummaryAnalysis of the daily pollen collections from honeybee colonies showed that: (1) the percentage of pollen from crownvetch (Coronilla varia)decreased with increasing length of stay in the field; (2) colonies recently moved into a field of crownvetch in full bloom collected a higher percentage of crownvetch pollen than those which had been placed in the field 8 days earlier or had been there prior to bloom; (3) percentage of bloom was not a factor in honeybee fixation to crownvetch; (4) competition from other crops available in the vicinity of the crownvetch field might be one of the most important factors in decreasing the percentage of crownvetch pollen in the daily pollen collections; (5) moving colonies to the crownvetch field when the plants start to bloom, and at intervals during the blooming period, might help in providing maximum pollination.