Please do not use 2,4-D at this time I think it hurts wheat yield too much and does not control all weeds. Chemicals below are very gentle on wheat and give a much broader window of control.
Link on weeds: http://www.ent.uga.edu/pmh/
Harmony Extra TotalSol Per label Always add surfactant per label.
Express Plus MCPA. Per label Always add surfactant per label. Gives good to excellent control on most winter weeds. DO NOT USE THIS ON OATS.
POWERFLEX Per Label gives excellent weed and ryegrass control. Read label for plant back restrictions.
Wheat has gone through a lot of weather change in the last 10 days. Most wheat should be coming out of a frozen/waterlogged state. I have not seen any damage to the growing point on any wheat planted on time. This week will give a really big change in the way your crop looks if it is warm. You want to have by 02-07-2014 all your nitrogen out unless you plan to put 15-20 pounds through the system after a flag leaf tissue test. The total amount to help prevent lodging; sandy fields up to 120 pounds, stiff dirt up to 110 pounds, please add sulfur.
Think about mixing 1000 pounds of UREA and 1000 pounds of Ammonium Sulfate per ton. This will make a 35-0-0-12 sulfur. This is a great top dress for any small grain.
Lastly, take time to walk your wheat fields while the wheat is still young and you can count the plants per foot of row. If you find a row that is too thin or too thick flag that row on your drill and correct the seeding rate before you plant next year.