Table 5. Model results for grass density in 2014 in the South Field.

Source (fixed factors)a	Grass density (plants m-2)b
	df c	F	P-valued
South Field– 2014
Irrigation	1,2.02	40.09	0.02
Grass origin	1,15.95	61.86	<0.001
Irrigation x Grass origin	1,15.95	30.18	<0.001

Model results for grass density in 2014 at the South Field (Model P<0.001, Adj. R² = 0.86, N = 47). One outlier was removed to improve model fit. Seeding strategy was not included in the model because the full treatments had not been implemented. Too few grasses were encountered in the North Field for analysis.

^a Fixed factors (and levels) are as follows: Irrigation treatment (Spring, Fall+Spring) and grass origin (wild-collected, commercial). Random effects of block, sub-block (nested within block), and plot (nested within sub-block, block) were also included in models but significance of these effects are not shown.

^b Grass density was square root transformed prior to analysis.

^c Degrees of freedom (df), indicated as numerator, denominator df.

^d Bolded P-values indicate significant (P<0.05) model effects.