SEEDBED AND SEEDER OPTIONS FOR OLD-WORLD BLUESTEM ESTABLISHMENT

Seedbeds of graze-out wheatland and herbicide-killed wheat (Triticum a estivum L.) were evaluated as were use of a grass drill and the Woodwa rd chaffy grass seeder for Old World bluestem (Bothriochloa ischaemum (L.) Keng) establishment, Seedings were made in 3 consecutive years in western Oklahoma, Steer grazing days on the seedbed treatments, seedl ing establishment, and second year grass herbage production were measu red, Adequate stands were established in either seedbed, Economics fav or the graze-out wheat seedbed treatment which produced an average of 189 steer grazing days ha(-1) year(-1). Adequate stands were establish ed with either the grass drill or the Woodward seeder, Denser stands w ere usually established with the Woodward seeder-this was unexpected s ince it is a broadcast seeder, Results with the Woodward seeder are at tributed to a requirement for very shallow planting of Old World blues tem and the protected environment of wheat drill furrows and wheat res idue, Seedbeds of graze-out wheatland are recommended for Old World bl uestem establishment in the Southern Plains.