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Establishment of Birdsfoot Trefoil as Influenced by Competition from Weeds and Companion Crops¹

Sypnosis: Seeding without a companion crop, reducing competition from companion crop by grazing and the use of selective herbicides are means of increasing chances of successful establishment of birdsfoot trefoil. Pre-emergence applications of TCA or post-emergence dalapon have controlled grassy weeds and enhanced survival and vigor of trefoil seedlings. A combination of dalapon and 4(2,4-DB) has shown promise of controlling grasses and many broadleaf weeds without serious injury to the trefoil.

² Associate Professor of Farm Crops and Associate Professor of Botany and Plant Pathology and of Farm Crops.

Received for publication February 4, 1956.