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Synopsis: Seed yields of five Trifolium species were inadequate when honeybees were excluded. A commercial variety of Trifolium resupinatum L. produced an adequate amount of seed with honeybees excluded, but yielded twice as much seed if honeybees were present.
2 Associate Professor of Entomology, Texas Agr. Exp. Sta.; and Research Agronomist, Crops Research Division, and Agronomist, Texas Agr. Exp. Sta.; respectively. The use of the facilities at the Rice-Pasture Experiment Station, Beaumont, Tex., is gratefully acknowledged.
Received for publication July 20, 1959.
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