Disease
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Much of the following is a post from 2017 but timely for our situation at the moment: Pecan scab is enjoying ideal weather in much of Georgia at this time. This has kept most growers busy trying to keep the trees sprayed between rain showers. A common question we get during such conditions is “how long does…
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Below you will find examples of effective fungicide spray programs. Because of the high variability in scab susceptibility from one variety to the next, this year’s suggestions will be a little more complex and based on the cultivar you grow and the level of scab pressure you have at an individual site. We have broken…
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The temperatures over the Easter weekend dipped down a little further than forecast in a few areas in the state. April 3 saw the lowest temps of the weekend. While temps in Ft. Valley area reached 32, there were low lying areas that dropped down to as low as 26 degrees. UGA weather stations in…
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Growers are starting to see symptoms of shuck decline in the orchard. Symptoms range from shucks turning all the way black to the tips green shucks turning black and peeling back at the suture. In some cases, kernels are black and in other cases, there is no kernel. The degree of declining shucks is different…
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Jason Brock and Dr. Tim Brenneman UGA Department of Plant Pathology Triazole (Group 3) fungicides were first labeled and used in pecan production during the 1990s with the introduction of propiconazole (Orbit). Since that time, a number of triazole active ingredients and products have been available and widely used. Tebuconazole in particular has been sprayed…
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Our extension plant pathologist Jason Brock offers the following recommendations based on Dr. Tim Brenneman’s research regarding nut scab: June through July is a critical time for pecan scab management, as nuts are most susceptible during sizing. Nut scab development early in the summer will be much more devastating than late season infections. We have…
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Based on conversations I have had with a number of growers it sounds as if there is a need for some clarification regarding phosphite materials. Phosphite has become a very valuable tool for us in the battle against pecan scab. Dr. Tim Brenneman first began testing phosphite materials on pecan primarily for efficacy on some…
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