The value of white clover Trifolium repens L., Cultivar S100 planted on motorway verges to honeybees Apis mellifera L
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Published source details
Free J.B. & Williams I.H. (1980) The value of white clover Trifolium repens L., Cultivar S100 planted on motorway verges to honeybees Apis mellifera L. Biological Conservation, 18, 89-92.
Published source details Free J.B. & Williams I.H. (1980) The value of white clover Trifolium repens L., Cultivar S100 planted on motorway verges to honeybees Apis mellifera L. Biological Conservation, 18, 89-92.
Summary
In 1974, four 5 x 12 m plots (separated by 1 m-wide paths) of each cultivar were sown (randon block design). In 1975 and 1976, when flowering, honeybee and bumblebee counts were made. The presence of pollen loads on honeybees was recorded and bumblebees were identified. A total of 21 counts were made on eight days in June-July 1975, and 16 counts on six days in June 1976. At the end of each observation day, the numbers of open flower heads in each plot was estimated from counts within two 4 m² quadrats. In both years, corolla tube measurements were made on 10 florets from each of 10 flower heads of each cultivar to assess if floret size influenced bee preference.
Output references
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