Figure 8. Percent canopy cover of Kentucky bluegrass (Poa
pratensis). Percent cover as a function of year (A) and treatment with
both years assessed collectively (B) at BNI. Bars denote one standard
error. Means with same letter are not significantly different
(p< 0.10). Data were collected in July 2019 and 2020
from BNI Coal, LTD, near Center, ND USA.