SR 4220 RYEGRASS

JF SR4220SR 4220 Perennial Ryegrass is specially designed for its resistance to grey leaf spot, as well as its extremely high fall density, excellent winter color, red thread resistance and melting out resistance. High endophyte material was utilized in SR 4220 to insure insect resistance. It is an excellent choice for golf courses, sports fields or home lawns due to its dark green color, good seeding vigor and fine leaf texture.

HISTORY
SR 4220 was developed at Rutgers University in the fall of 1997 based primarily on its resistance to grey leaf spot and its excellent heat tolerance. Following rigorous testing at the Rutgers Turfgrass Breeding program, superior seed was sent for further trials at Seed Research in the fall of 1998. In the spring of 1999, it was noted that these maternal progeny had two distinct heading and anthesis periods. SRX 4801, now known as SR 4220, represents the progeny from the 15 later transitioning materials.

CHARACTERISTICS
* Extremely dark green color; Better winter color in permanent turf
* High turf quality with a fine leaf texture and reduced stemminess
* Long term persistence - excellent cold and hot weather performance
* Excellent winter color and winter density when overseeded into dormant bermudagrass
* Early spring green-up in northern climates. Very high spring, summer, fall and winter density
* High billbug resistance due to high endophyte levels
* Excellent leaf spot, dollar spot and crown rust resistance; high red thread resistance

APPLICATION
SR 4220's dark green color makes it ideal for a variety of turf applications. Blend SR 4220 with other peren-nial ryegrasses for sod production, golf course fairways or lawns. It also can be mixed with Kentucky bluegrasses and fine fescues. In blends with other perennial ryegrasses or mixed with Poa Trivialis, its dark, dark green color and high diseases resistance make it ideal for overseeding permanent turf.

SEEDING RATE
* New turf: 7-9 pounds per 1,000 square feet or 300-400 pounds per acre
* Overseeding rate:
30 pounds per 1,000 square feet for golf greens
250-450 pounds per acre for roughs
600-700 pounds per acre on fairways
* Seeds per pound: approximately 250,000

GERMINATION
* Emergence in 3-7 days under proper conditions. First mowing 2 weeks after emergence.

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SR 4220 RYEGRASS

JF SR4420SR4420Perennial Ryegrass is specially designed for high turf quality and its resistance to grey leaf spot, snow mold, brown patch and crown rust. SR4420is an excellent choice for golf courses and sports fields because of its dark green color, good seedling vigor, fine leaf texture, extremely high fall density and superior traffic stress tolerance. Perennial Ryegrass

HISTORY
SR4420was developed at Rutgers University in the fall of 1997 based primarily on its resistance to grey leaf spot and its excellent heat tolerance. Following rigorous testing at the Rutgers Turfgrass Breeding program, seed from 25 plants with dark green color, high shoot density and high seed yield was sent for further trials at Seed Research in the fall of 1998. In the spring of 1999, it was noted that these progeny had two distinct heading and anthesis periods. The progeny from six plants with early heading were separated from the remainder of the population and designated SRX 4820, now known as SR4420, which represents the early transitioning portion of the population.

CHARACTERISTICS
• Excellent gray leaf spot, dollar spot and crown rust ?Extremely dark green color
• Quick emergence
• High turf quality with a fine leaf texture and reduced stemminess
• Long term persistence - excellent cold and hot weather performance
• Excellent winter color and winter density when overseeded into dormant bermudagrass
• Early spring green-up in northern climates. Very high spring, summer, fall and winter density
• High billbug resistance due to high endophyte levels

APPLICATION
SR4420’sdark green color makes it ideal for a variety of turf applications. Blend SR4420with other perennial ryegrasses for golf course fairways, sports fields, sod production and home lawns. It also can be mixed with Kentucky bluegrasses and fine fescues. In blends with other perennial ryegrasses or mixed with Poa Trivialis, its dark green color and high turf quality make it ideal for overseeding permanent turf.

SEEDING RATE
• New turf:7-9 pounds per 1,000 square feet or 300-400 pounds per acre
• Overseeding rate: 30 pounds per 1,000 square feet for golf greens
250-450 pounds per acre for roughs
600-700 pounds per acre on fairways
• Seeds per pound:approximately 250,000

GERMINATION
• Emergence in 3-7 days under proper conditions. First mowing 2 weeks after emergence.

Learn More...