I agree with Eric. Inorganic fertilizer has much more predictable results, and it is much easier to adjust when needed. There are Inorganic fertilizers on the market that are very user friendly and application is not difficult. You could put 6 pounds of inorganic fertilizer per acre and get as good or better results.

Fisheries Biologist, Texoma Hatchery.
www.texomahatchery.com