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The genus Agrostis, commonly known as the bentgrasses, is an extremely diverse and highly outcrossing genus.
The two bentgrasses and two fescues offer sustainable strategies for low-input turf.
The bluegrasses and bentgrasses can tolerate the harsh Canadian winters, whereas tall fescue and perennial ryegrass are better adapted to those regions of the cool season zone where cold temperatures are not extreme.
colonial and dryland bentgrasses (different tetraploid genomes [A.sub.2][A.sub.2] [A.sub.3][A.sub.3] vs.
Take-all patch only occurs on the bentgrasses. Unfortunately, some pathogens have a wide host range.
As with the USA annual bluegrass ecotypes, the bentgrasses were selected from tillers grown from commercial seeds planted in 10-cm-diam.
In cool climatic regions bentgrasses have become popular for use on fairways, in part related to factors such as increased disease epidemics on perennial ryegrass (Lolium perenne L.) fairways and improved characteristics of bentgrasses for fairway use, such as higher shoot density.
Velvet bentgrass turf use largely ceased after the mid-20th century because of seed production problems, thatch management issues, and the introduction of seeded creeping bentgrasses (Brilman and Meyer, 2000).
These results indicate that selection and breeding of bentgrasses from New Jersey golf course fairway collections may be more effective for developing dollar spot resistant cultivars for New Jersey growing conditions.
CREEPING BENTGRASSES (2n = 4x = 28) are the premier and most widely used cool-season turfgrasses for golf course putting greens, tees and fairways in the USA (Funk, 1998).
The bentgrasses were maintained at 1.27 cm, received 195 kg N [ha.sup.-1], and were irrigated as needed to maintain acceptable golf course fairway quality.
(1997a) reported that Kentucky bluegrass and creeping and velvet bentgrasses produced more aboveground biomasses over time when inoculated with mycorrhizae compared with the uninoculated control.