1	Wisconsin Water Quality Agricultural Performance Standards Sue Porter, Wisconsin Department of Agriculture, Trade and Consumer Protection
2	Environmental Concerns Phosphorus is the major nutrient promoting aquatic weed growth in freshwater lakes and streams. In Wisconsin, About 10% of the private drinking wells exceed the enforcement standard and health advisory level of 10 PPM nitrate nitrogen.
3	Agriculture performance standards & County Land and Water Resource Management Plan Implementation Control erosion to meet tolerable soil loss (T) Construct manure storage facilities to standards Divert clean water around feedlots in WQMA Apply nutrients to crop needs Manage livestock properly to avoid manure spills, runoff, and streambank erosion
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5	Erosion is still the number one source of nonpoint source pollution in the US
6	Phosphorus Transport
7	Impaired Waters Map
8	Nutrient management planning Require qualified planners to sign-off on plans for cost-sharing Presumed qualified if a professional with credentials or approved farmer training Collect data on nutrient management planning from bulk fertilizer dealers Transfer soil testing lab certification from FSA to DATCP
9	Nutrient management standards Apply nutrients according to annual NM plan using current 590 standard Follow UW recommendations Do not apply nutrients to fields > T or in waterways Do not apply within 200 ft. groundwater conduits--unless incorporated within 72 hrs
10	New 590 Winter Manure Application Restrictions Plant perennial cover in flow channels AND do not apply nutrients to established channels Do not apply in excess of P removal (liquid manure applications > 7000 gallons per acre) Do not apply within 1000’ of lakes & 300’ of perennial streams Do not apply within 200’ of wells, sinkholes... Do not apply to slopes > 9 %, except up to 12% only if conservation measures are in place (residue, contoured, waterways, etc.) No commercial fertilizer applications to frozen soils except for grass pastures and on winter grains
11	"Restricts P applications through the..." Restricts P applications through the P Index or soil test P levels
12	Critical Soil Test P Values 50-100 ppm P P removal for crops to be grown in rotation (4 years) Potatoes, P applications shall not exceed rotational crop removal if soil tests are optimum or higher >100 ppm P Stop manure applications or apply less than removal Also, apply one of the practices to limit P loading Leave 30% residue on the soil surface after planting or Establish fall cover crops or Establish contour strips or buffer strips
13	The Phosphorus Index 2 to 6 No increase over 4 year rotation >6 to <10 Go to <6 in 6 year rotation using particulate and soluble P levels 10 and up Go to <10 in 4 year rotation and <6 in an additional 6 year rotation
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16	New 590 Standard Information Conservation planner (crop rotation, field acres, soil series, % slope, annual soil loss, average soil loss, app. restrictions in ww drainage areas) Nutrient planner (soil test Bray P1 PPM P, yield goals for P removal, high permeability soils, distance to concentrated flow, perennial streams, annual applications rates projected 4 yrs., irrigated fields, soil temp. at application)
17	Comparing Crop Removal With Manure Nutrient Content Corn utilizes approximately three times more nitrogen than phosphorus. Manure supplies N & P₂0₅ at approximately a 1:1ratio. Result = Soil test phosphorus levels increase if applying manure to meet crop nitrogen needs annually.
18	State Average Soil Test P
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21	Planning for implementation Cost for 9 million acres @ $7 per acre
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23	Nutrient Management Initiatives
24	Websites For Copies 590 Nutrient Management Standard July 2002 http://www.wi.nrcs.usda.gov/fotg/print_all.asp Technical Note http://www.wi.nrcs.usda.gov/technote/notes/cptn1.pdf