Symptoms and Signs Figure 2 Leaves shred after spores rupture will display yellowgreen streaks in the early stages of disease and these streaks later become gray Shortly afterwards the lea ID: 172156
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In spring and fall, when environmental conditions are satisfactory, the dormant spores will germinate and produce another form of spore which can practices, animals, and people. Some varieties of bluegrass survive efects of the disease better than others. Merion Kentucky smut, while Park and NewpoOther more resistant varieties are A-20, A-34, Baron, Birka, Bonnieblue, Fylking, Geary, ugget, Pennstar, South Dakota Certifed, Vantage, and Victa. Optimum fertilization with a complete (not nly) fertilizer and conscientious watering aintain theof the stand and to increase the survival of infected plants. fungicides are helpful ontrolling the stripe smuto be made just prior to dormancy in the fall (November in much of New York)or just before growth resumes in the spring (March). Tshould be drenched into the tuSome products that may be registered to manage ourformulation of pesticide youow the label he fungicide as well as any vailable for turf applications. Commerciaefer to the appropriate pest management guidelines, or contact their local or more information currently registered 2005. R.W. Dernoeden and be registered egistration status for in New York State should your regional DEC Diagnostic Clinic ScienceIn the late spring or earlyfall some lawns exhibit reveal that this unhealthy look is due to stripe mut fungi also attack various grass species. ery hot dry periods however, the striped infection may become severe enough that et summer weather, a striped smut infection may weaken plants sion by other organisms may also cause plants to die. Figure 1: Black spore in streaks on the leaves. nless a large area of turfdying, an overall view of the infected turf area may not be very revealing. Figure 2: Leaves shred after spores rupture s inthe early stages of disease, and these streaks later become gray. Shortly afterwards, the leaf tissue over the ruptures and black spore masses are exposed (Fig. 2Disease Cycle periods will usually die,tly, visual symptoms are seldom present during midsummer. Te dark spores produced in "stripes" along the leaf blades serve as summer and winter. Also,the fungus may survive mycelium in infected crowns and rhizomes.