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Yellow
(Winter) Patch |
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| Symptoms: leaves
become etiolated and turn yellow. Round shaped patches
8-20 inches (200-500 mm) diameter. Halo pattern. Weak
pathogen. Temperature range: 50-59 F (10-15C).Loses
pathogenicity at >77 F (25 C). Cultural control: •apply PGRs late fall/early winter •low nitrogen level •remove excess thatch •maintain moist root zone •cytokinin or gibberillin application •avoid fungicide applications during winter dormancy |
Fungicides: polyoxin
Zn salt (Endorse) flutolanil (ProStar)—early to mid-fall pyraclostrobin (Insignia) |
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