chicken guano applications

From: Savanna Reid
request for info./reference suggestions

I am an International Baccalaureate high school student in Tulsa, 
Oklahoma, U.S.A. looking for information about chicken guano.  I am 
involved in a research project to analyze its uses and safe disposal. 
This project is related to the large number of chicken farms in nearby 
Arkansas which are polluting our rivers with their wastes.  Can you share 
any information or sources of information?  Thank you -- any help is 
very much appreciated.