There are a couple articles from Texas A&M and Purdue regarding spring transition. We are behind this year compared to normal and both articles will address in great detail. Please feel free to review at your earliest convenience.
We have not reached temperatures needed for Bermuda grass to start actively growing. We have a great forecast in front of us this week, and have started to encourage with fertilization, and will continue to do so. Currently in heavily shaded fairways we are sitting around 58-61 degrees, and in full sun around 65 degrees at a 4” depth.
We are going to elimate traffic on fairways for a couple weeks to minimize compaction and damage to new leaves. Below is a picture of healthy rhizomes, but have not reached the needed soil temps. If we have any damage from winterkill we will repair.
Thanks for your patience and understanding.
https://aggie-horticulture.tamu.edu/archives/parsons/turf/publications/spring.html
http://purdueturftips.blogspot.com/2014/03/warm-season-turf-winterkill-2014-what.html?m=1