Symptoms
& Signs: |
First appears as small, yellow flecks on leaves
Flecks enlarge to form rust-colored pustules
Overall turf color may be yellow-orange to reddish-brown
Turf yellows, withers and dies
|
Grasses
Affected: |
All cool-season grasses: especially perennial ryegrass and
certain cultivars of Kentucky bluegrass
|
Causal
Agent(s): |
Fungi: Puccinia spp. & Uromyces spp.
|
Time of
Occurence: |
Late summer to fall (or during mild winter months)
|
Conditions that
Favor Disease: |
Moderately warm and humid
Stressed turf (lack of water fertilizer, etc.)
|
