Mid Atlantic SWW Region's blog

FHB Update from PA, 06/04/18

Unusually cool temperatures will cause our scab risk level to slowly decrease this week. However, most of the region is still at medium or high risk for scab infection right now due to the weather over the past several days. If your wheat is flowering now, please consider a fungicide application. Studies have shown that an appropriate fungicide application paired with a moderately resistant variety provides the best prevention of vomitoxin.

--Alyssa Collins, Extension Field Crops Pathologist, Penn 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 MD, 05/30/18

Flowering is all finished across all counties of Maryland now, except for a few late planted fields in the northern part of MD that may still be flowering, and with the current high risks of FHB should be sprayed with Prosaro/Caramba. For most parts, wheat is now in the grain filling stage. With the showers that we had at flowering, there are high chances of substantial Fusarium Head Blight incidences this year. Consequently, tombstones (shriveled scabby kernels) and DON content are going to be a concern for the growers. To assess the incidence of FHB, you may randomly pick 20-25 heads of wheat per 1-2 acres and count the spikes having bleached spikelets. Fields with high incidence rates should be harvested separately from those with lower incidences. Harvesting from fields with high levels of FHB incidence should be done with higher fan speeds to remove lighter tombstone kernels. The farmers are advised to get the DON content analyzed in the grain before taking it to the market.

--Nidhi Rawat, Small grains Pathologist, University of Maryland

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 PA, 05/26/18

Scab risk is very slowly declining over the next few days across northern PA. Central and southern PA continue to be at high risk. Much of the wheat in these regions is about to begin flowering or has begun to do so. Time a fungicide application on fields that are at the beginning of flowering, up to about 5 days following the beginning of flowering. Remember, sprays applied PRIOR to flowering will NOT provide significant suppression of scab or toxin production. Caramba or Prosaro are effective on scab and give control of most leaf diseases and glume blotch. They do not need to be tank mixed with another product to control these diseases. If these products are unavailable, Proline and Folicur (which together provide the same chemicals as Prosaro) may be tank mixed at a rate of 3 + 3 fl oz/A. Spray nozzles should be angled at 30° down from horizontal, toward the grain heads, using forward- and backward mounted nozzles or nozzles with a two directional spray, such as Twinjet nozzles. Do NOT use any strobilurin-containing fungicides at heading or beyond.

--Alyssa Collins, Extension Field Crops Pathologist, Penn 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 VA, 05/24/18

Fusarium head blight for Virginia continues to be to high throughout the state due to recent wet, warm weather. Most of the wheat is past the flowering stage and no longer at risk, but later flowering wheat may still need a fungicide application. Triazole fungicides including Prosaro, Caramba, and Proline are recommended. For wheat that is past flowering, a fungicide application will not reduce FHB or DON contamination of the grain.

--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 MD, 05/22/18

With the recent wet period and warm temperatures, FHB risk in the state of Maryland continues to be very high. Growers having their wheat flowering now are advised to spray triazole fungicides (Prosaro/Caramba) for FHB. Aerial application at a rate of 5 gallons per acre or ground application at 15 gallons per acre with 300-350 um droplet size and nozzles angled down 30 to 45 degrees from horizontal is recommended. If flowering has finished, fungicide spray will not help to reduce FHB and DON contamination of grains. Do not spray strobilurin-containing fungicides.

--Nidhi Rawat, Small grains Pathologist, University of Maryland

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 PA, 05/21/18

Scab risk continues to be very high across PA this week. If your wheat has begun to flower, spray at your earliest opportunity to protect it from infection. Recent wet weather will cause spores to continue to form all week. Time your application on fields that are at the beginning of flowering, up to about 5 days following the beginning of flowering. Remember, sprays applied PRIOR to flowering will NOT provide significant suppression of scab or toxin production. Caramba or Prosaro are effective on scab and give control of most leaf diseases and glume blotch. They do not need to be tank mixed with another product to control these diseases. If these products are unavailable, Proline and Folicur (which together provide the same chemicals as Prosaro) may be tank mixed at a rate of 3 + 3 fl oz/A. Spray nozzles should be angled at 30° down from horizontal, toward the grain heads, using forward- and backward mounted nozzles or nozzles with a two directional spray, such as Twinjet nozzles. Do NOT use any strobilurin-containing fungicides at heading or beyond.

--Alyssa Collins, Extension Field Crops Pathologist, Penn 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 MD, 05/15/18

Wheat is anywhere from beginning to heading to past-flowering in Maryland. With the current wet weather, the risk of FHB is increasing in the region. Farmers who currently have their wheat flowering are advised to spray for FHB. Those who will have flowering in the coming week or so are advised to be prepared to spray, keeping a close watch on the risk forecast. If the wheat is already past flowering, you don’t need to spray. The fungicides recommended for FHB are Prosaro, Caramba, or Proline. Do not apply a strobilurin-containing fungicide.

--Nidhi Rawat, Small grains Pathologist, University of Maryland

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, 05/15/18

FHB risk is increasing in Virginia and will continue to increase over the next several days. Risk is highest on the Eastern Shore, but susceptible varieties such as Shirley that are flowering over the next week will be at moderate to high risk in many portions of the state. Growers should monitor the FHB risk tool as their wheat crop begins to flower and consider applying a fungicide if risk is moderate to high. Wheat that has completed flowering is no longer susceptible to infection. Fungicides should be applied at early flowering or up to one week later. Do not apply a strobilurin-containing fungicide since this can increase DON contamination. Recommended fungicides include Prosaro, Caramba, and Proline.

--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 PA, 05/14/18

If you have wheat flowering this week or barley heading this week in DelMarVa or most of Pennsylvania, please consider spraying your crop for scab if you have not done so already. Persistent wet weather and warm temperatures are triggering Medium to High risk levels in many areas of the region. Time your application on fields that are at the beginning of flowering, up to about 5 days following the beginning of flowering. Remember, sprays applied PRIOR to flowering will NOT provide significant suppression of scab or toxin production. Caramba or Prosaro are effective on scab and give control of most leaf diseases and glume blotch. They do not need to be tank mixed with another product to control these diseases. If these products are unavailable, Proline and Folicur (which together provide the same chemicals as Prosaro) may be tank mixed at a rate of 3 + 3 fl oz/A. Spray nozzles should be angled at 30° down from horizontal, toward the grain heads, using forward- and backward mounted nozzles or nozzles with a two directional spray, such as Twinjet nozzles. Do NOT use any strobilurin-containing fungicides at heading or beyond.

--Alyssa Collins, Extension Field Crops Pathologist, Penn 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 VA, 05/09/18

The FHB risk for Virginia remains low in most areas. However, risk is moderate to high for wheat currently flowering in coastal areas. For FHB control in wheat, apply Prosaro, Caramba, or Proline at beginning flowering or up to one week later. For barley, fungicides should be applied at head emergence. Do not apply a strobilurin containing fungicide after the flag leaf emergence stage since this can increase DON levels in the grain.

--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

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