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Colby, Kansas | #1 goal is protect the flag leaf, I agree spray now. Tebuconazole and other triazole type products have been labeled by some as "curative" because they might have slightly faster activity against existing infections. The reality is there is no such thing as a curative, you cannot turn dead leaf tissue back to green.
One of the biggest falsehoods being told to growers right now is that tebuconazole and other "curative" type products do not have residual activity. Studies at KSU and other places would show that all products offer at least 14 to 21 days of residual activity. In producer fields last year here in NWKS that 21 days was pretty spot on for both generics and top shelf products.
The "preventative" and "curative" terminology aren't particularly useful for fungicides with regard to stripe rust.
https://webapp.agron.ksu.edu/agr_social/eu_article.throck?article_id...
With regard to insecticide, up here we have been seeing greenbug and bird cherry oat aphids. Neither of them have been anywhere near control thresholds. We do have good populations of lady bettles, lace wings, and others. The indiscriminate use of an insecticide with populations don't warrant it needlessly wipes out beneficial insect populations. Those beneficials will become very important of sugar cane aphid appears here again.
Edited by LHaag 4/30/2016 20:56
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Timing of Tebuconazole for wheat stripe rust?
