Features Applications Other
Spreading in high risk situations

May 31, 2011 – If you must
haul manure during high runoff risk times, follow these suggestions provided by the Wisconsin Manure Management Advisory Service..
May 31, 2011 – If you must
haul manure during high runoff risk times:

• Avoid field spreading
  manure by:

1. Using neighboring or other
   available manure storage facilities
2. Creating in-field stacking
   in areas that pose the least environmental runoff risk. (For manure stacking
   guidelines, see page 14 of the NRCS 313 practice standard on Temporary,
   Unconfined Stacks of Manure.)

• If field spreading of
  manure is necessary:

1. Identify lower-risk fields
   for spreading or stacking manure: Apply to your driest
   fields
2. Use your Nutrient
   Management or Conservation Plan to find fields with: low slope, low erosion,
   and low delivery
   potential (low P-Index)
3. Apply to flatter fields
   without channelized flow, gullies
4. Apply to fields farthest
   from surface water, conduits to groundwater, and areas of concentrated flow
5. Apply to fields that do
   not drain to Outstanding, Exceptional, or nutrient impaired water bodies

• Incorporate manure
  applications whenever possible:

1. Manure must be incorporated
   within 200 feet of areas draining to groundwater conduits

• In winter, follow these
  additional restrictions:

1. No nutrient spreading in
   the winter within 1000 feet of lakes and 300 feet from streams/rivers
2. On frozen or snow-covered
   fields with unincorporated liquid manure applications, limit application rates
   to 7,000 gallons/acre or the P removal of the next crop, whichever is less.

• Core Nutrient Management
  Principles:

1. Nutrient applications must
   not run off the intended application site so applications to saturated soil are
   likely to leave the field. Care should be exercised in the application of
   liquid manure. Liquid manure applications increase soil moisture, which can
   lower the amount of precipitation needed to induce runoff. Check field outlets
   (low spots or exit points) during and after application to verify no runoff
   occurs.
2. Fields receiving nutrients
   must have sheet and rill soil erosion controlled to tolerable soil loss rates
   or “T” over the crop rotation.
3. Establish grassed
   waterways in areas of concentrated flow, resulting in reoccurring gullies, and
   do not apply nutrients.

• If runoff of applied
  nutrients occurs, implement following actions:

1. Stop application
2. Take corrective
   action to prevent off-site movement (e.g., berms, dams, etc)
3. Modify application
   (rate, method, depth, timing, field selected) to eliminate runoff
4. Notify WI DNR in
   the event of spill or accidental release of any material or substance when
   required by AG Spill Law (s.289.11, Wis Stats.) or terms of WPDES permit. Refer
   to AG spills and How to Handle Them
   (http://dnr.wi.gov/org/aw/rr/archives/pubs/RR687.pdf).

For additional information
regarding nutrient management planning, contact:

• Sue Porter, DATCP nutrient management specialist, 608-224-4605, or Sue.porter@wi.gov
• Stephanie Schneider, DATCP nutrient management specialist, 715-456-3168, or Stephanie.schneider@wi.gov