Pennsylvania Yield Data

In the 2004 Rock Springs, PA Cool-Season Grass Variety trial, twelve orchardgrass varieties were entered. The trial was seeded on April 20th, 2004. Penn State researchers' fertility program includes applications of phosphorus and potash to meet the soil test requirements. Additionally, this trial received 70 lbs of N in early April with an additional 50 lbs of N applied after each harvest except the last one. In this trial, nearly half the entries maintained statistically equal yields. It is worth noting that at the end of 3.5 years, Persist, along with one other variety, had the top score for stand percentage.

Penn State University

Cool-Season Grass Variety Trial - Orchardgrass

Rock Springs, PA

2004-2007

Cultivar	Stand 10/9/07	2005 Yields	2006 Yields	2007 Yields	3-Yr Ave.
Persist	91.5%*	4.64	6.05*	3.34*	4.67*
Shiloh II	91.5%*	3.95	5.84	3.20*	4.32
Century	90.2%*	4.73	5.50	3.62*	4.60*
Bounty	90.1%*	4.79	5.99*	3.58*	4.78*
Takena 2	89.8%*	5.03*	6.26*	3.30*	4.85*
Pennlate	89.7%*	4.65	6.41*	3.47*	4.83*
LG-31	87.5%*	4.46	5.08	2.70	4.06
Athos	87.3%*	4.62	5.03	3.07*	4.23
Niva	86.8%*	4.77	5.59	3.08*	4.47
Haymaster	86.8%*	5.21*	5.54	3.40*	4.71*
Command	83.7%	4.45	5.16	3.05	4.20
Extend	82.6%	5.46*	6.06*	3.48*	4.98*
lsd	7.5%	0.53	0.54	0.56	0.38
*Statistically equal to the top score.