I have a 20 acre hay meadow that is common bermuda mixed with world giant bermuda. Is there an organic fertilizer that can be used on this size of meadow that is reasonable? If so, where can I get it ? This is on black-
land, and is north of Greenville. Is urea fertilizer considered to be
organic? I heard it was.

I don't have a recommendation for you at the moment for your situation, but urea tends to be fairly water soluable - this is not so good. You don't want your fertilizers/ products mixing in with natural water sources. You might also want to post your question in the Organic farming forum - you might get some hits there too.
LFH

We have a Organic Fertilizer Company, and have been developing a program for hay and grazing pastures, over the past 7 years. You can see our products at www.homestead.com/watsonorganic/home.html We are located in East Texas and can ship anywhere. If you have any questions feel free to contact me, you can find our phone number on our web site. We are really trying to help as many people as possible, get away from using chemicals. You can see our hay pastures on the web site or feel free to come visit our ranch and see for yourself. We have a great looking field of crimson clover right now.
Good luck with your hay field and let me know if we can help.

I don't know what the product from Tyler Tx is but you need increase organic matter in a big way. Compost is great but long hard process. Second best is to use humates and it are easy to do and not expensive to do. There is a man in FW that was hired to restore LBJ Grass Land State Park. His formula is one ton of humate, small amount of amonium sulfate (this helps free up trace minerals), rock phosphate, naturally mined potassium, DE, and other things if you want (I want lava sand this time if he can do this product).
You question about urea - Howard is not opposed on limited basis (so he has said in past), but it is kinda waste since you don't have the other "stuff in place".
The man in FW is Randy Mosely. He mixes up your formula (varies on soil test) and delievers to you feed dealer. You then use their spreader (with out baffle) to put out humate. Your seize acres will not take long.
Bob Bard

We live in East Texas, in the Emory area (South of Greenville, TX)
We have about 35 acres of hay meadow.
What do you all think of using chicken manure on the meadows?