If you did not get ¾ of an inch or more of rain in the last week you may need to water. Dig down 2″ and if the soil does not hold shape when balled in your hand, then water. It is best not to water when flowers are visible on more than 25% of wheat heads (FEEKES 10.5+); just wait until flowers fall off (about 3 days later). You need ¾” to 1” of water (rain or irrigation) every week until 75% of wheat heads in your field are at Soft Dough Stage. Do not over water wheat.
Today, I think wheat (AGS 2035) planted on time is 4-5 days ahead of last year. Most wheat is at Feekes early 10.2 or older. This means the wheat head is visible in the leaf seath. (AGS 2035 planted 11-24-2014 in Seminole county is at Feekes 10.2 to 10.4) You need to spray as late as possible per the label of fungicide used, because most fungicides do not translocate well in the plant. We need to protect the head of wheat and the flag leaf during this time. If you see rust call me. I have seen very little rust but lots of Septoria, Stagonnospora leaf blotch, Powerdery mildew, BYD and Tan Spot.
Fungicides: Absolute 500 SC, Headline, Stratego, Quilt, Quadris, Folicur+Tilt, or one of many others.
All should be put out at per the label of fungicide used.
Aphids are out, but you need to have 10+ per flag leaf before you treat. Always watch for beneficials. Lady bugs, Aphid lions (lady bug larvae), parasitic wasp, and syrphid fly larvae all eat aphids.
Foliar insecticide treatments for aphid control: A well-timed insecticide application of a persistent pyrethroid insecticide such as lambda cyhalothrin (Warrior, Karate, Lambda, Silencer, others) can reduce the incidence of BYD and increase yields. Lambda cyhalothrin can only be applied twice to a crop so use another product at heading such as Baythroid XL or Mustang MAX/Respect. These can be combined with a foliar fungicide application and also will control cereal leaf beetle if it is present.
As always, follow all label instructions.
*Follow label on all Pesticides, rinse and dispose of empties properly. Info Georgia Pest Management Handbook 2015