Chapter 20. George E. Bohart. 1957. Pollination of alfalfa and red clover. Pages 355-380. In: Edward A. Steinhaus, Ray F. Smith (editors). Annual Review of Entomology. Volume 2, 407 pages. Stanford, CA: Annual Reviews Inc.

Keywords: alfalfa, tripping, calculations of pollination requirements, mechanical pollination, importance of bees, Megachile, pollination by honey bees, nectar collectors, Apis mellifica, A. ligustica, pollen collectors, recommendations, pollination by bees other than honey bees, Halictus eurygnathus. H. malachurus, Andrena labialis, A. flavipes, A. albofasciata, Nomia diversipes, Melitta leporine, Melitturga clavicornis, Megachile argentata, M. pilidens, M. maritima, M. saussurei, Eucera tuberculata, E. interrupta, E. clypeata, E. nigrifascies, E. chrysopyga, Tetralonia tricincta, Amegilla magnilabris, Bombus silvarum, B. agrorum, B. terrestris, Russia, Megachile frigida, Athophor, Nomia melanderi, Halictus rubicundus, Lasioglossum, Hylaeus, red clover, pollination by honey bees, pollination by wild bees, Bombus terrestris, B. terricola, B. occidentalis, B. terrestris, elissodes, Tetralonia, Eucera sociabilis, Andrena wilkella