Evaluating the need for fungicides in wheat
The best time to apply a fungicide for leaf disease management is between flag leaf emergence and flowering. Most of the wheat in south central or central Kansas is already at flag leaf emergence and boot stages of development. This means that farmers have approximately 10-14 days to make fungicide applications. Applications targeting Fusarium head blight should be made after the wheat has fully headed.
There are many fungicides labeled for use on wheat. Nearly all fungicides provide very good or excellent control of foliar diseases. There is a significant difference in product costs, however, with products containing tebuconazole or propiconazole being the lowest cost options (often less than $4 per acre product costs). The triazole fungicides including Prosaro and Caramba are the best option for suppression of Fusarium head blight. More information about fungicide products can be found in the publication, Foliar Fungicide Efficacy for Wheat Disease Management, 2012, EP130. http://www.ksre.ksu.edu/library/plant2/ep130.pdf
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