Evaluation location: Texas, United States
The plot area used was immediately adjacent to that of the 1997 Iowa Park evaluation. Check entries included 'Luna' and 'Manska' pubescent wheatgrass, 'Slate' and 'Oahe' (PI574517) intermediate wheatgrass, as well as 'Ariba' and 'Barton' western wheatgrass. The accession PI 531721, which was evaluated in the Iowa Park 1997 trial, was inadvertently also included in the Iowa Park 1998 trial. Plots were grazed in 1999 the same as for the Iowa Park, 1997 trial. Two steers (1250 kg live weight hectare -1) grazed the approximately 0.4 hectare area to a stubble height of 1 -2 cm in 2000; grazing dates were 28 March to 20 April. Vigor ratings were assigned in early December, 2000.