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Agricultural News for Farmers and Agribusiness in SW Georgia

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Posts Tagged ‘wheat’

Wheat Meeting in Donalsonville

Posted by romeethredge on October 9, 2015

We are having a wheat breakfast this week in Donalsonville. Come out to hear about wheat production for 2015/2016. We’ll meet at the Extension Building on Friendship Ave at 8 am on  Wed. Oct 14, 2015.

Dr. Dewey Lee, UGA Extension Grains agronomist, will be here to update us and hopefully tell us how to make money with wheat this year. Here’s a link to our Wheat UGA Page with the production guide and other info.

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Wheat Harvest 2015

Posted by romeethredge on May 13, 2015

We have begun wheat harvest in deep south Georgia. Moisture is running about 10% in some fields, depending on the variety as well.  I’ve heard some 60 to 70 bushel estimated yields. Some test weights are low, but some at 60 or so reported. We are seeing shriveled kernels from disease problems, mainly Fusarium head blight.  Look for the pink on them and it’s likely fusarium. This can cause deductions so if you are seeing pink on shriveled kernels then make sure to turn up the fans to blow most of that out.  I have photos of some below.

UGA Grains Scientist, Dewey Lee, has more observations at his Georgia Grain Crops.

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Fusarium Head blighted kernels on right side, notice pinkish appearance.

 

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Posted in Plant Pathology, Wheat | Tagged: , | 1 Comment »

Fusarium Head Scab….again

Posted by romeethredge on April 22, 2015

I didn’t think we’d see it 2 years in a row like this. But I’m seeing some wheat Fusarium head scab today here in Seminole county and it concerns me.  I don’t think at this point that we are seeing this disease at the level we saw last year and it will differ field by field. We just released a new publication concerning this disease at this post Fusarium Head Blight (Scab) of Wheat in Georgia.

It was bad last year and not at all bad before that. I would see it in low levels if at all. I started worrying about it when we started getting so much rain. Not much we can do about it. We may need to look at variety selection next year, and a few other things you can read about in the publication.

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Posted in Plant Pathology, Wheat | Tagged: , | 1 Comment »

Fusarium Head Blight (Scab) of Wheat in Georgia

Posted by romeethredge on April 22, 2015

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Posted in Plant Pathology, Wheat | Tagged: , | 3 Comments »

Wheat Fusarium Head Blight or Scab

Posted by romeethredge on April 17, 2015

Last year,2014, was the worst Fusarium Scab we have ever seen here on wheat.  We had rainy warm conditions during flowering (just as heads emerged) and everything hit just wrong.  This time we were dry when most of the wheat here was heading, so we are hoping not to see much this year. But now that conditions have worsened in terms of being favorable for the disease, we need to be thinking about it. Some growers may decide to apply fungicides but they must be applied at the right time, preemptively, and may just give us some suppression.

There is a Fusarium Head Blight Prediction Center that is showing as you see below a high risk now for our area. Go to the site and click on Georgia to get more info.  Fullscreen capture 4152015 112901 AMHere is a list of some of our wheat varieties and their resistance to this problem.

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Dr. Alfredo Martinez, UGA Plant Pathologist, gives these wise words concerning the use of chemical control. “Control using fungicides can be difficult due to the specific time the fungicides need to be deployed and because selection of fungicides labeled for FHB is limited. Timing of fungicide applications is crucial for the control of FHB. Foliar sprays must be applied at the first sign of anthers extruding from the wheat (anthesis). Triazoles work best when applied right before or at early flowering on the main stem heads. The use of nozzles that provide good coverage of the spike is essential for proper disease management. The fungicides labeled for FHB disease-suppression only are listed in Table 3”

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Here is what the heads look like if affected. This is from last year.

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Wheat Fungicide

Posted by romeethredge on April 17, 2015

There has been a fair amount of wheat sprayed with fungicide in the last 2 weeks. We are seeing some rust in some fields. Here’s Brad Thompson spraying some that they have that has just completely headed out. That’s the best time to spray for maximum protective effect. Here’s the link to UGA’s Wheat Rust in Georgia publication.

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Some Wheat Heading

Posted by romeethredge on March 27, 2015

Some of the earlier planted wheat is now heading and a few plants are even blooming at this time. Crop scout Mike Jones and I looked at this field near Brinson this week.

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Wheat Disease

Posted by romeethredge on March 27, 2015

 Leaf rust of wheat(Puccinia triticina syn P. recondita) has been found in some area wheat fields. It’s been seen in Mitchell county and consultant Wes Briggs found some this week near the airport, here in Donalsonville.

Here’s a small spot of wheat leaf rust with some powdery mildew on the right side.

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 Here’s a super closeup.

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UGA Plant pathologist, Alfredo Martinez has this disease report. Recent weather patterns observed in the southern US can contribute to the dispersal and establishment of the disease. Additionally, favorable environmental conditions for leaf rust development are developing or are now in place in the state; THEREFORE wheat field scouting and monitoring should be implemented at this time. If leaf rust is present in your field, this warrants a fungicide application and the options include:

Triazoles

metconazole (Caramba)

propiconazole (Tilt, Propimax)

prothioconazole (Proline)

prothioconazole + tebuconazole (Prosaro)

tebuconazole-containing products (Folicur, others)

Strobilurins

azoxystrobin (Quadris)

fluxastrobin (Evito)

picoxystrobin (Aproach)

pyraclostrobin (Headline)

Mixed mode of action

fluoxapyroxad + pyraclostrobin (Priaxor)

flutriafol + fluoxastrobin (Fortix)

propiconazole + azoxystrobin (Quilt, QuiltXcel)

propiconazole + trifloxystrobin (Stratego)

prothioconazole + trifloxystrobin (Stratego YLD)

pyraclostrobin + metconazole (Twinline)

tebuconazole + trifloxystrobin (Absolute)

tebuconazole + azoxystrobin (Custodia)

When leaf rust has become established in a field, triazole fungicides tend to be most effective. Strobilurins have a more preventive activity and tend to be weaker if rust is already in the field. Remember that protection of the flag leaf is of essential importance for yield preservation. A complete list of wheat fungicides, rates and specific remarks and precautions can be found on page 60 of the 2014-15 Wheat Production Guide (http://www.caes.uga.edu/commodities/fieldcrops/gagrains/documents/2014-2015WheatProductionGuide.pdf  ). Always follow product label for recommendations, precautions and restrictions. More information on identification and control of leaf rust can be found at http://extension.uga.edu/publications/detail.cfm?number=C1060

3.              Powdery Mildew: Powdery mildew (Blumeria graminis; syn Erysiphe graminis) infections on wheat fields have been reported and confirmed recently across the state, especially in the southernmost part of the state. Weather has been conducive for the disease. Powdery mildew tends to diminish as temperatures consistently reach above 75ºF and RH falls below 85%. If powdery mildew progresses up the plant and is found in upper leaves (flag leaf minus 2) you might consider a fungicide application. Refer to page 9 of the 2014-15 Wheat Production Guide for wheat varieties response against powdery mildew.

4.              The North Central Extension and Research Committee (NCERA-184) for the management of small grain diseases has developed an excellent guide for wheat fungicide efficacy in a table format http://www.ksre.ksu.edu/bookstore/pubs/EP130.pdf  .  The information is updated yearly. The 2015 table is not available yet but the data from 2014 is still valid.

5.  Two new publications are now available on Wheat Leaf Rust http://extension.uga.edu/publications/detail.cfm?number=C1060   and Wheat Powdery Mildew http://extension.uga.edu/publications/detail.cfm?number=C1059

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Wheat – Flag leaf Stage

Posted by romeethredge on March 20, 2015

Some of our wheat is in the flag leaf stage, now. I took these photos yesterday in a field of  wheat that was planted about November 20th and is the Pioneer 26R94 variety.

Notice the head emerging in one photo. This was pretty rare though, in this field.

This is entering a critical stage for wheat as we want to protect the flag leaf for maximum grain yield.

I found no rust in this field and just a little powdery mildew. There has been leaf rust found in Mitchell county, however, already.  If we plan to make a preventative fungicide then we need to be preparing to make that application as soon as all the heads emerge unless disease threatens before that point.

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Wheat Rust in Mitchell County

Posted by romeethredge on March 20, 2015

My fellow county agent, Andy Shirley, in Mitchell County (Camilla, Ga) reported leaf rust this week in some wheat there.

Click on this link to read his report, Mitchell County Ag News.

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