The cultivars for this study were selected
based on NBLS natural infection severity ratings (Saichuk et al.,
2010). Narrow brown leaf spot very susceptible ‘Cheniere’ and
‘CL131’, susceptible ‘CL111’, moderately susceptible ‘CL151’, and
resistant cultivars ‘Della’ (2011) and ‘Presidio’ (2012) were drillseeded
on 6 April (early planting date) and 17 May (late planting
date) in 2011, and 15 April and 21 May in 2012, at 136 kg ha1.
Experimental units were 1.2 4.9 m and consisted of seven rows
with an 18-cm spacing