Beyond CNMPs:New Directions in Nutrient

Management11-30-2010

Eric G. Hurley, Nutrient Management SpecialistUSDA-Natural Resources Conservation Service

Natural Resources Conservation Service 2

Nutrient Delivery to the Gulf of Mexico

Natural Resources Conservation Service 5

(A) Total Nitrogen (B) Total Phosphorus

Alexander, et al, Environ. Sci. Tech., 2008

Why Update?

Natural Resources Conservation Service 6

Des Moines Water Works has the largest nitrate removal facility in the world

Conservation Effects Assessment ProjectUpper Mississippi River Basin report, June

2010http://

www.nrcs.usda.gov/technical/nri/ceap/umrb/index.htmlMissouri River report is expected soon

Drivers in Iowa Nutrient MgtHypoxia in the GulfIowa drinking water qualityQuality of Iowa’s lakes and streamsManure stinks

Economics?

ResponseNational Nutrient Management Strategy

EQIP implementation released 9/1/2010Strategy released 10/15/2010Based around a set of core practices (Basic &

Enhanced)

Mississippi Basin River Initiative$80 million/year for four yearsEnhanced EQIP paymentsAll EQIP contracts must include nutrient

management

ResponseIowa Nutrient Reduction Strategy

The Iowa Department of Agriculture and Land Stewardship requested assistance from Iowa State University to: Define technical options to reduce Iowa’s export of

nutriens Determine how to implement a control effort

What’s New in Iowa?Focus on nitrogen along with phosphorusFocus on all nutrient inputs along with

manureLook at many other treatment options

Nutrient treatment wetlandsCover cropsPerennials in rotationBioreactors

Engage many more producersStill very much a work in progress

www.isafarmnet.com

Eric G. HurleyNutrient Management Specialist

USDA-Natural Resources Conservation Service210 Walnut ST, Room 693

Des Moines IA 50309515-284-4370

eric.hurley@ia.usda.gov