Most wheat and oats could use rain or irrigation now. Small grain planted on time from Griffin Ga., south is entering the Feekes 10.1 stage or later (see Chart) wheat head just poking through leaf sheath. With wheat still over $6.00 on the CBOT it will pay to use one of the mixtures like Quilt, Stratego, Twinline, Propicanazole+Tebuconazole, or Headline should be used. Add Aphid control if needed. (see Insect Control here).
You need to apply this spray between Feekes 10.3 and 10.5 for best head disease control.
Dr Steve Harrison, wheat breeder at LSU has an update (click here to view) that gives the best explanation I have seen on why we have such ragged wheat this year. Please take time to read this it will help you in planning you wheat planting this Fall. Land Grant Wheat breeders (UGA, LSU, NCS, UF, and UArk) have several hundred varieties that are tested each year for our areas climate and disease pressure. They really need to be thanked for all they do for the Southern Farmer.
*Information obtained from 2012(http//www.caes.uga.edu/publications) Georgia Pest Control Handbook and Intensive Wheat Management in Georgia. As always follow label and dispose of empties properly.
The rain last week really helped our water problem and our wheat crop. Some areas were still dry and most got very good rain out of this event. Powdery mildew and aphids were also washed off your wheat and some fields were getting close to needing a spray. The cooler days and nights below 45 degrees will really help this wheat crop. Most wheat I saw last week was between Feekes 6 and 7 and is about 7 days earlier than last year. Overall we have a great crop that could have a longer grain fill that could give great yields if we get some cool nights <45.
Image provided by Adam Roland
The Powdery Mildew photo above is a good example of what you could have seen in your fields last week. The dry weather and nights below 55 degrees will help keep mildew off your wheat. If you get a severe mildew problem when it warms back up then use propiconazole at the low rate it will cure your mildew. Do not spray your primary fungicide until the wheat heads, around Feekes 10.4 is best
The aphid photo (below) is a good example of what you found last week in your fields and shows a colony growing and getting ready to fly to another area in your field spreading Barley Yellow Dwarf which can hurt your yield. A lambda insecticide will cure that problem.
Here is a link to the UGA charts on pesticide and fungicide sprays and rates.
Do not use 2-4-D this late in the growing season.
Information obtained from 2012 Georgia Pest Control Handbook and Intensive Wheat Management in Georgia. As always follow label and dispose of empties properly.