Helminthosporium leaf spot

Helminthosporium leaf spot

[hel‚min·thə′spȯr·ē·əm ′lēf ‚spät]
(plant pathology)
Any leaf spot, commonly of grasses, caused by Helminthosporium species.
References in periodicals archive ?
DISEASE PROBLEMS -- Anthracnose -- Red thread -- Brown patch -- Rust -- Copper spot -- SAD -- Dollar spot -- Slime mold -- Fairy ring -- Smut -- Gray leaf spot -- Snow mold--gray -- Helminthosporium leaf spot -- Snow mold--pink -- Necrotic ring spot -- Spring dead spot -- Nematode -- Summer patch -- Powdery mildew -- Pythium blight -- Others: Recommendations: (apply a fungicide, decrease nitrogen fertilization, reseed with resistant cultivars, etc.
Evaluations of resistance to Helminthosporium leaf spot were performed only at E3 and E4, where natural levels of infection were sufficiently high to discern differences among entries.
One cultivar, PI614817, exhibited an extremely sensitive response to Helminthosporium leaf spot, scoring a 9 in each replication of both environments.
ij] effects) was statistically significant for each of the other traits except days to maturity and reaction to Helminthosporium leaf spot (Table 1).
Jumbo had moderate resistance to Helminthosporium leaf spot disease (caused by Dreschlera spp.
At the time of its release in 2000, Horizon 314 exhibited excellent resistance to prevalent races of crown rust, and was moderately resistant to Helminthosporium leaf spot, (caused by Helminthosporium sativum Pam.
Helminthosporium leaf spot (Bipolaris sorokiniana Sacc.
This application included phenoxy herbicides, which were reported to predispose Kentucky bluegrass to Helminthosporium leaf spot (Hodges, 1980).