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Wheat south of I-40 is mostly past flowering and beyond the most susceptible growth stage for infection. Although some wheat in northeast Arkansas is still at the critical flowering stage, the risk for scab is forecast to be low based on weather variables. There does not appear to be a need for a fungicide Continue reading Low risk for Fusarium head blight (scab) in wheat I guess it got dry enough to walk some fields today. My phone was ringing off the wall with calls, mostly about stink bugs in wheat. Everyone is seeing stink bugs, so what do we need to do about the situation? From what we can tell by our observations and the folks we are Continue reading Insects are in the wheat crop but don’t get excited just yet Stripe rust is still increasing on susceptible varieties at locations where it blew in during the spring. The most susceptible varieties are Arcadia, Progeny 117, Progeny 185, and USG 3993. Except for a few fields, stripe rust does not appear to be having a significant impact on yield because of adult-plant resistance and one Continue reading Wheat disease update – May 3, 2013
The black fruiting bodies associated with stripe rust lesions are telia of the stripe rust fungus and signal and end of the stripe rust epidemic. I evaluated plots near Kibler, Rohwer, and Mariana on 24-25 April. At Kibler, maturities ranged from early boot to flowering, and only low levels of leaf blotch were found Continue reading Wheat Disease Update, 26 April 2013 
I’ve gotten several calls over the last day or so about possible freeze damage for Saturday morning. The National Weather Service has issued a frost advisory for much of central and northeast Arkansas for the early morning hours of Saturday morning, with most forecasts calling for temperatures dropping to the mid 30’s, but above Continue reading Wheat Freeze Damage Potential Unlike last week’s report that was based on emails and phone calls, this report is based on observations in plots at Rohwer, Keiser and Newport and fields along the way. Stripe rust was serious only in areas where it overwintered on varieties with low levels of adult-plant resistance and either no fungicide was Continue reading Wheat Disease Update, 18 April 2013 Symptoms of glyphosate drift on winter wheat. (Image by Bob Scott) Glyphosate drift from burndown fields to wheat is starting to show up in areas around the state. The photo (right) shows typical symptoms of wheat that likely recieved a drift rate of glyphosate sometime after panical initiation. Note the short flag leaf Continue reading Glyphosate drift on wheat GETTING READY — A spray buggy runs ahead of the planter to get a pre-emerge herbicide down as corn planting season begins in Chicot County, Arkansas. (U of Arkansas System Division of Agriculture photo by Gus Wilson.) Arkansas’ cotton acres were expected to plummet, and rice acres to shrink slightly in 2013, but Continue reading Prospective Plantings report: Ark cotton, rice acres down 
The agriculture community has used anhydrous ammonia as a low cost, highly effective nitrogen-based fertilizer for years. It’s prevalence in the farming community makes it easy to sometimes forget that this a dangerous chemical and should be handled with caution and care. The word, “anhydrous”, means without water. When anhydrous ammonia comes in contact Continue reading Safe handling of anhydrous ammonia Based on observations from plots at the Rohwer Experiment Station in Desha County, Beretta, Ricochet and Progeny 185 were the most susceptible varieties to stripe rust and had hot spots with numerous infected leaves. Scattered leaves with stripe rust were found on 26R20, Arcadia, Coker 9553, Harrison, Progeny 308, and Terral 8861. In previous Continue reading Update on wheat stripe rust, March 15 |
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