In This Year's Manure or This Year's Fertilizer, some applications may appear in a red or an orange box. By clicking on the cell, you can enter the Nutrient Application Planner to find out why these applications are flagged:

•Below the tables, there is an area that indicates if there are any applications during the year that do not follow the 590 Standard. A notice will appear explaining the problem. For Nitrogen Restrictions, see Identifying Excessive Nitrogen Applications. For Field Restriction explanations, see below.

•If there are any non-compliant applications that cannot be changed, there is an area that you can write an explanation. This explanation will show-up on the Compliance Check Report.

Field Restriction problem messages explained:

Any of these application problems will cause the cell for that application on the Cropping screen turn orange. If an explanation was entered for the non-compliant applications, the cell will be blue. These restrictions are set in the Wisconsin Nutrient Management Standard 590:

•Excess fertilizer P2O5. More than the entire P2O5 recommendation for the planned rotation has already been applied on this field as manure or fertilizer.

590 Standard: Commercial P2O5 should not be applied to a field in excess of any year’s recommendation if the total recommended P2O5 for the rotation has already been applied. Exception - corn can get 20 lb/a for starter.

How this is calculated in SnapPlus: First all of the P2O5 recommendations for the entire rotation are summed. Then the total P2O5 amount applied (as manure and fertilizer) is added for each consecutive year. When the amount applied exceeds the recommendation for the rotation and the amount recommended for the individual crop year is also exceeded, then P2O5 fertilizer applications are flagged (except those of 23 lb/a or less for corn).

•Manure cannot be applied within 50 feet of a drinking water well.

590 Standard: No mechanical manure applications within 50 ft of a drinking water well

•Unincorporated or grazing applications upslope of conduits to groundwater: sinkhole, well within 200 feet.

590 Standard: No unincorporated nutrients within 200 ft upslope of direct conduits to groundwater such as a well, sinkhole, fractured bedrock at the surface, tile inlet or nonmetallic mine. Applications in these areas must be effectively incorporated within 72 hours. Effective incorporation means mixing with the topsoil or residue or subsurface placement of nutrients with topsoil by such means as injector, disc, sweep, mold-board plow, chisel plow, or other tillage/infiltration methods.

How SnapPlus identifies this problem: For fields with identified groundwater conduits, SnapPlus will return this message for any manure or fertilizer N or P2O5 applications if the selected Spread method is Unincorporated. If a liquid fertilizer application will be effectively incorporated through infiltration within 72 hours, select Incorporation as the Spread Method.

•No winter spreading on slopes steeper than 12% or on uncontoured slopes between 9 and 12%

590 Standard: On frozen and snow covered ground, do not apply nutrients on slopes greater than 9%, except for manure on slopes up to 12% where cropland is contoured or contour strip cropped.

•Local restrictions may prohibit winter spreading.

590 Standard: On frozen or snow-covered ground, do not apply nutrients to locally identified areas delineated in a conservation plan as contributing nutrients to direct conduits to ground water or surface water as a result of runoff. Note: These locally identified areas will be identified by the counties.

•Winter applications prohibited within SWQMA.

590 Standard: On frozen and snow covered ground, do not apply nutrients within the SWQMA (Surface Water Quality Management Area, 300 feet from a stream or 1000 feet of a lake or pond) except for manure deposited through winter gleaning/pasturing of plant residue.

•Winter P2O5 applications exceed crop removal by XXX lbs.

590 Standard: On frozen or snow-covered soils, do not exceed the P removal of the following crop when applying manure.

•Winter spreading rate must be less than 7000 gallons/acre.

590 Standard: On frozen or snow-covered soils, liquid manure applications cannot exceed 7000 gallons per acre.

•Planned unincorporated application in SWQMA may not have the 30% canopy cover or residue that is required if there are no filter strips or cover crops planned. Click 'Calculate all years' to find out.

Or, following soil loss calculation, you make get this message:

•Planned unincorporated application in SWQMA is not likely to have 30% canopy cover or residue for runoff reduction, and no filter strips or cover crops are planned.

590 Standard: For all nutrient applications on non-frozen soil within a SWQMA use one or more of the following practices as appropriate to address water quality concerns for the site:

1) Install/maintain permanent vegetative buffers.

2) Maintain greater than 30% crop residue or vegetative cover on the soil surface after nutrient application

3) Incorporate nutrients within 72 hours

4) Establish cover crops promptly following application

How SnapPlus identifies this problem: If the field is in SWQMA, there are unincorporated fall, spring, or summer manure, or N or P2O5 fertilizer applications, and the field does not have in-field or edge-of-field filter strips, then the first message will appear in the Nutrient Application Planner, “Potentially inadequate runoff management from unincorporated application in SWQMA. Calculate soil loss to get better information.” (Note: If this message is a result of a liquid fertilizer application that will be effectively incorporated through infiltration within 72 hours, select Incorporation as the Spread Method.) When soil loss is calculated, the program checks in RUSLE2 to see if % crop residue and vegetative cover are > 30% for the day before manure application (SnapPlus manure applications are sent to RUSLE2 on standard days for each season – Nov. 1, April 25, July 21 for the counties in the southern 2/3 of the state).

•Planned rate may be too high for single, unincorporated liquid manure application in SWQMA. Click Calculate all years 'to find out.

Or, following soil loss calculation, you make get this message:

•Planned rate is too high for single, unincorporated application in SWQMA. The highest rate allowed on this field with the planned level of cover and residue for a single application is x,000 gal/acre and an application has x,000 gal/acre.

590 Standard: When unincorporated liquid (less than 12% solids) manure applications occur on non-frozen soils within a SWQMA, use Table 1 in the 590 Standard to determine maximum acceptable rates. Sequential applications may be made to meet the desired nutrient application standard.

How SnapPlus identifies this problem: If SWQMA is checked yes and there is an unincorporated spring, fall, or summer liquid manure application, the program checks the application rate against the minimum application rate in Table 1 for the Soil Texture (as shown on the Cropping screen).

1 Fine – clay, silty clay, silty clay loam, clay loam; Medium – sandy clay, sandy clay loam, loam, silt loam, silt; Coarse – loamy sand, sandy loam, sand. The coarse category also includes peat and muck.

2 Crop residue or vegetative cover on the soil surface after manure application.

If the rate exceeds the maximum, a warning message appears in the Nutrient Application Planner: "Potential excess rate for single application without incorporation in SWQMA. Calculate soil loss to get better information." When soil loss is calculated, the program checks RUSLE2 results to see if % crop residue and vegetative cover are > 30% for the day before manure application. SnapPlus manure applications are sent to RUSLE2 on standard days for each season: Nov. 1, April 25, July 21 for the counties in the southern 2/3 of the state. If the first operation of the season precedes that standard date, the day before that operation is used instead.