Title: Dairy manure biochar as a phosphorus fertilizer Authors
Submitted to: Meeting Proceedings
Publication Type: Other
Publication Acceptance Date: February 11, 2013
Publication Date: February 26, 2013
Citation: Cantrell, K.B., Hunt, P.G., Miller, J.O., Novak, J.M. 2013. Dairy manure biochar as a phosphorus fertilizer. In: Meeting Proceedings of the University of Wisconsin Extension 2013 Midwest Manure Summit, February 26-27, 2013, Green Bay, Wisconsin. 14 pp. http://www.midwestmanure.com. Technical Abstract: Future manure management practices will need to remove large amounts of organic waste as well as harness energy to generate value-added products. Manures can be processed using thermochemical conversion technologies to generate a solid product called biochar. Dairy manure biochars contain sufficient concentrations of phosphorous that are readily available to plants. When applied at agronomic rates, manure biochars perform similar to commercial phosphorus fertilizers; more importantly, the biochars were not detrimental to plant growth. Because of the high phosphorous content, manure biochars need to be managed as fertilizers rather than as a carbon-building amendment.