This study demonstrated that rice producers can reduce sheath blight losses by planting moderately susceptible to moderately resistant cultivars and improve rice grain yield by applying azoxystrobin at mid-boot to moderately susceptible,
susceptible,
and very susceptible cultivars.
Moderately susceptible cultivars were shown not to need fungicide applications in a previous study; however,
Spring's disease reaction in this study indicates it should be designated as a susceptible cultivar, and in some rating systems, Cheniere has a susceptible classification. Fungicide applications are not warranted on moderately resistant cultivars, especially if severe disease fails to develop on them.
This study demonstrated that rice producers can reduce sheath blight losses by planting moderately susceptible to moderately resistant cultivars and improve rice grain yield by applying azoxystrobin at mid-boot to moderately susceptible, susceptible, and very susceptible cultivars. Moderately susceptible cultivars were shown not to need fungicide applications in a previous study; however, Spring's disease reaction in this study indicates it should be designated as a susceptible cultivar, and in some rating systems, Cheniere has a susceptible classification. Fungicide applications are not warranted on moderately resistant cultivars, especially if severe disease fails to develop on them.
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