I spent a lot of time investigating Jackson and Creek before setting out trees last year. Short story is that neither is worth growing if you want long term consistent production.
Jackson is unusual for very high overlap of pollen shed with flower receptivity. It has better than average scab resistance. The Achilles heel of Jackson is low production. Nuts are large but usually are well filled. I have one tree of Jackson that is about 20 years old. I do not intend to propagate any more.
Creek has good scab resistance combined with a tendency to overbear. It is very susceptible to phylloxera which is problematic in this area. I set out one tree to use in breeding. I do not count on it to make a regular crop.
I’ve been delving around on the internet and found a few articles that are worth a look.
Be careful with this one. The trees are only 6 years old. Excel has HUGE problems with overbearing as a mature tree.
Organization of this presentation from Arkansas is a bit chaotic, but a lot of information is there if you care to dig through it. Most of it is compiled from Alabama, Georgia, and USDA data.
This article has a lot of 20,000 foot view items about pecan culture.
This one discusses evaluation of several USDA selections for commercial production in south Georgia. One of them might be worth pursuing for yard tree use. I spent 2 hours going through the fine details to figure out that only that one is worth a trial. http://horttech.ashspublications.org/content/24/3/407.full.pdf+html
This slide presentation is worth a look to get an idea of the scale of Georgia/Alabama/Florida pecan planting. It is 5 years out of date. I talked to 3 nurseries in the last 6 months that each say they are propagating 500,000 trees per year. Based on this, there is reason to believe more than 2,000,000 pecan seedlings are currently being planted per year. I can’t guarantee this number so do your own due diligence.
This one from Lenny Wells is worth a look. GA 00-7-75 is now named Avalon.
This presentation projects the U.S. pecan crop will double by 2025. It is based off 2012 data which does not factor in the dramatic increase in trees planted over the last 5 years.