IF you want $50,000 plus forget Ag Ed. My aged mother has been teaching for ~20 years. Bachelor degree, teaching credentials, masters degree, ed specialist, "HIghly Qualified" under 'No Child Left Behind' and she just is in the $50s and Mother is one of the highest paid teacher's in her school (why they want her too retire). Maybe some other states have more money too throw around; but education in general is good steady employment. It doesn't really pay.....unless you can coach football.
Back when I got out, the big money was in pharmaceutical sales. Merck was offering $50,000 (I didn't have the communication skills or the temperment to push Ivomec all over Montana so didn't apply). I don't know if those sales opportunities are still there or not.
The corporate world in general is where the money is. I missed a promotion at the hog company that would have set me up nicely (because I couldn't speak Spanish); but most (like me) eventually get chewed up in the politics of it all and never make that next step into the upper echelon of corporate farm management and the real money.
You might want to look at Large Animal Vet. A couple of the vet professors I worked with for four years were begging me to apply. I didn't see how four more years of school would have penciled out then. As a whole generation of Large Animal Vets head toward retirement and there are few if any capable young large animal vets to take their place, it looks to me like a good Large Animal Vet ought to be able to make $50,000 pretty easily if he actually knows Horses and cows and if most young vet grads continue to be pretty girls with a fascination with dogs and cats.
One word of warning though......at a recent Cattleman's meeting our new State Prez said that they and the NCBA were working towards moving beyond veterinarians. They have given up on recruiting kids to go to school for 8 years and they want to license non-degree Vet techs to do all the actual work of a vet under the loose direction of a vet back at the home office. A lot of old cowboys like me will get that certificate just so we don't have to run through hoops on getting meds and so we can make a few bucks on the side....preg checking, dehorning, vaccinating, pulling calves, and doing c-sectionss I don't know if that has a chance or not of passing the U.S. Congress; but you might want to find out which way the political winds are blowing before making any decision there.