FHB Alert Blog

FHB Update from OK, 04/12/19

During this past week, the first observation of stripe rust was made in Oklahoma in southern/southwestern Oklahoma in Jackson County where Gary Strickland (Extn Educator; Jackson County in SW OK) and Mike Schulz (Altus Station Superintendent) found a low incidence of this rust on wheat in a variety demo and in a producer’s field. Leaf rust also was observed at a low incidence as was leaf spotting due to Septoria/Stagonospora. David Nowlin (Extn. Educator; Caddo County in central Oklahoma) also continued to observe leaf spotting. In scouting variety demos in Washita and Kiowa Counties, Heath Sanders (SW Area Extn Agron Speclst) did not find any powdery mildew, leaf rust or stripe rust. Around Stillwater, not much has changed. Wheat is mostly between growth stages 8-9 (flag leaves emerging to flag leaves fully emerged). I can still find hot spots of aphids (primarily bird cherry-oat aphids) along with scattered powdery mildew and a low incidence of leaf rust. Leaf spot diseases also are scattered and only on lower leaves. Finding stripe rust this late and at this low of an incidence typically indicates that stripe rust will not be much of a problem this year in Oklahoma especially when coupled with limited reports of this rust in Texas. However, leaf rust still has plenty of time to develop, especially if temperature and free moisture on leaves continues to be favorable.

--Bob Hunger, Extension Plant Pathologist, Oklahoma State University

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from NC, 04/10/19

This is the first North Carolina small grain scab risk commentary for the 2019 season. In most of NC, wheat is still 1 to 5 weeks from the period when Fusarium infects heads, which is flowering. Barley has headed or will soon head in the Piedmont and Coastal Plain. Currently, scab risk is low in all the wheat- and barley-growing areas of NC. The forecast holds only a little rain, which means risk should remain low for the next 10-14 days. There is no need to treat for scab when risk is low at flowering. Updates will be provided for the next 6 weeks.

--Christina Cowger, Plant Pathologist, USDA-ARS and North Carolina State University

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from GA, 04/10/19

Wheat scab risk is moderate to high in several southwest GA counties. Crawford, Lamar, Monroe, Macon and Upson counties show moderate risk. If the risk in your area is moderate to high and wheat is flowering, apply fungicide at early flowering or up to 7 days later. Avoid applying a strobilurin-containing fungicide. FHB labeled fungicides include Caramba, Prosaro, Proline, Folicur, Tilt, and Miravis Ace. The most effective products are Prosaro, Caramba, Proline and Miravis Ace (see NCERA 184 wheat fungicide table for reference).

--Alfredo Martinez, Plant Pathologist, University of Georgia

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from US, 04/10/19

The focus of the Fusarium Head Blight Prediction Center moves North this week. Wheat in AR, TN and NC should be approaching the critical stages of growth over the next 7 to 14 days. There may also be some areas of northern LA, MS and AL that are still at vulnerable growth stages. At this point, the risk of severe disease is low, in most of these areas. There is a region of southern LA and MS that appears to be a moderate or high risk, however, wheat in this area is likely past the most vulnerable growth stages.

--Erick DeWolf, Extension Plant Pathologist, Kansas State University

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from GA, 04/02/19

Currently, FHB risk assessment map indicates low development potential across Georgia. However, weather patterns and forecasted rain events for the weekend and following week can potentially increase the risk of FHB. Therefore, remain vigilant.

--Alfredo Martinez, Plant Pathologist, University of Georgia

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from VA, 04/01/19

Welcome to the 2019 FHB commentary for Virginia! As the wheat crop in the state begins to approach flowering, comments regarding risk of Fusarium infection and management recommendations will be posted.

--Hillary Mehl, Extension Plant Pathologist, Virginia Tech

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from US, 04/01/19

The Fusarium head blight prediction center resumed activity for the 2019 growing season this week. The southern states including LA, MS, AL and GA are the current focus of the prediction effort. Over the next few weeks, wheat in these states will likely reach the flowering and early stages of grain development that are most vulnerable to infection by the Fusarium fungus. The current risk of severe disease is low in the southern region of the US.

--Erick DeWolf, Extension Plant Pathologist, Kansas State University

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from US, 09/12/18

Thanks for your interest in the Fusarium head blight prediction center. The wheat growing season has ended in most areas of the US and the Fusarium head blight prediction center will no longer be generating new risk maps. The maps for the 2018 growing season will be available for your review during the next few months. The system is scheduled to resume activity in February-March of 2019. We hope to see you then.

--Erick DeWolf, Extension Plant Pathologist, Kansas State University

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from US, 07/31/18

Much of the US wheat crop should be beyond the growth stages that are most vulnerable to Fusarium head blight. The moderate gray color of the map suggests that the crop is already mature and being harvested in much of the country. Growers in the far northern regions of ND and MN may have some late maturing fields to monitor. Therefore, the risk tool will continue to run until approximately Aug 15th.

--Erick DeWolf, Extension Plant Pathologist, Kansas State University

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

FHB Update from ND, 07/20/18

Spring wheat is entering late stages of dough development in several areas of the state, however there are some late-planted fields that have started to flower. The greatest amount of scab risk for susceptible and moderately susceptible varieties is in the eastern third of North Dakota. Continue to monitor the growth stage in late planted spring wheat and durum and make a fungicide application at early-flowering.

--Andrew Friskop, Cereal Extension Pathologist, NDSU Department of Plant Pathology

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

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