National Nutrient Management Guidance Better Nutrient Management Guidance 3 Important Documents Nutrient Management Standard CPS590 Nutrient Management Policy GM190402 Nutrient Management Policy Implementation NI190302 ID: 696347
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Slide1
Nutrient Management
Natural Resources Conservation ServiceSlide2
National Nutrient Management Guidance
Better Nutrient Management Guidance
3 Important Documents
Nutrient Management Standard (CPS-590)
Nutrient
Management Policy (GM-190-402)
Nutrient Management Policy Implementation (NI-190-302)Slide3
National
Nutrient Management Practice Standard
DEFINITION
Managing the amount (rate), source, placement (method of application), and timing of plant nutrients and soil amendments.
4 R’s of Nutrient Stewardship
Right Rate
Right Source
Right Placement
Right Time
Minor RewordingSlide4
PURPOSE
- To budget, supply, and conserve nutrients for plant production.
- To minimize agricultural nonpoint source pollution of surface and groundwater resources.- To properly utilize manure or organic by-products as a plant nutrient source.
-
To protect air quality by reducing odors, nitrogen emissions (ammonia, oxides of nitrogen), and the formation of atmospheric particulates.
- To maintain or improve the physical, chemical, and biological condition of soil.
National
Nutrient Management Practice StandardSlide5
CONDITIONS WHERE PRACTICE APPLIES
- This practice applies to all lands where plant nutrients and soil amendments are applied.
This standard does not apply to one-time nutrient applications to establish perennial crops.
National
Nutrient Management Practice Standard
Minor RewordingSlide6
Criteria
- The NRCS-approved nutrient risk assessment for
nitrogen must be completed on all sites unless the State NRCS, with the concurrence of State water quality control authorities, has determined specific conditions where nitrogen leaching is not a risk to water quality.
National
Nutrient Management Practice Standard
Nitrogen Leaching IndexSlide7
302.2 Technical Criteria for Risk Assessment
B.
Nitrogen Risk Assessment Criteria.
Leaching Index.—The current NRCS-approved tool to assess the nitrogen leaching potential is the Leaching Index (LI).
If N leaching is a concern, planners will use the N risk assessment and implement needed BMP (N application at planting, Split application …)
National
Instructions
Part
302 –Nutrient Management Implementation
Nitrogen Leaching IndexSlide8
Average Annual Percolation
Considers
evapotranspiration
of the crop
Inputs average monthly precipitation and the hydrologic soil group
Tables will be developed by county and soil group.
Nitrogen Leaching Index
RUSLE 2
Nitrogen Leaching IndexSlide9
National
Nutrient Management Practice Standard
Criteria
The NRCS-approved nutrient risk assessment for
phosphorus
must be completed when:
phosphorus application rate exceeds land-grant university fertility rate guidelines for the planned crop(s) The planned area is within a phosphorus- impaired watershed-The NRCS and State water quality control authority have not determined specific conditions where the risk of phosphorus loss is low.
Phosphorus IndexSlide10
National
Nutrient Management Practice Standard
Criteria
Nutrient planning must be based on current soil and manure testing
-in accordance with land-grant university guidance
or
-industry practice, if recognized by the university
Soil &
Manure/Litter TestingSlide11
National
Nutrient Management Practice Standard
Criteria
Manure analyses must include, at minimum, total nitrogen (N), ammonium N, total phosphorus (P) or P
2
O
5
, total potassium (K) or K2O, and percent solids, or -follow land-grant university guidance regarding required analyses
Manure/Litter TestingSlide12
Current AL
Nutrient Management Practice Standard
Criteria
-Laboratory results will need to be adjusted for nitrogen application losses by using Tables 2 and 3.
M
anure
/Litter
TestingSlide13
Current AL
Nutrient Management Practice Standard
Table 2Slide14
Current AL
Nutrient Management Practice Standard
Table 3Slide15
National
Nutrient Management Practice Standard
Criteria
The following nutrient use efficiency strategies or technologies must be considered:
• slow and controlled release fertilizers
• nitrification and urease inhibitors• enhanced efficiency fertilizers • incorporation or injection • timing and number of applications • soil nitrate and organic N testing
Additional Criteria to Minimize Nonpoint PollutionSlide16
National
Nutrient Management Practice Standard
Criteria
The following nutrient use efficiency strategies or technologies must be considered:
• Coordinate nutrient applications with optimum crop nutrient uptake
• Corn Stalk Nitrate Test (CSNT), Pre-Sidedress Nitrate Test (PSNT), and Pre-Plant Soil Nitrate Test (PPSN) • Tissue testing, chlorophyll meters, and spectral analysis technologies • Other land-grant university recommended technologies that improve nutrient use efficiency and minimize surface or groundwater resource concerns.
Additional Criteria to Minimize Nonpoint PollutionSlide17
National
Nutrient Management Practice Standard
Criteria
Nitrogen and phosphorus application rates must be planned based on risk assessment results as determined by NRCS-approved nitrogen and phosphorus risk assessment tools.
Additional Criteria to Properly Utilize ManureSlide18
302.2 Technical Criteria for Risk Assessment
D. Minimum Criteria for State P-Index Tools.
- Consider nutrient losses caused by water and wind erosion using current NRCS water and wind erosion prediction technology (RUSLE 2).
- At a minimum, consider STP; time, rate, and method of P application; erosion; runoff; and leaching (when leaching is applicable) factors in the assessment of P- loss risk from fields.
- Demonstrate that risk increases with increasing runoff, erosion, STP, application rate, and also depends on method of application.
National InstructionsPart
302 –Nutrient Management ImplementationP-IndexSlide19
302.2 Technical Criteria for Risk Assessment
D. Minimum Criteria for State P-Index Tools.
Include the following risk categories:
Low risk—phosphorus can be applied at rates greater than crop requirement not to exceed the nitrogen requirement for the succeeding crop
Moderate risk—phosphorus can be applied not to exceed the crop requirement rate or crop removal rateHigh risk— phosphorus can be applied not to exceed the crop removal rate if the following requirements are met:
-- A soil phosphorus drawdown strategy has been implemented-- A site assessment for nutrients and soil loss has been conducted to determine if mitigation practices are required to protect water quality.National
InstructionsPart 302 –Nutrient Management Implementation
P-IndexSlide20
302.2 Technical Criteria for Risk Assessment
F. Phosphorus Application.
If increases in soil phosphorus levels are expected (i.e., when N-based application rates are used), the nutrient management plan shall document:
(i) The soil P levels at which it is desirable to convert to P-based planning
(ii) The proposed plan for STP drawdown from the production and harvesting of crops
(iii) Management activities or techniques used to reduce the potential for P transport and lossNational Instructions
Part 302 –Nutrient Management Implementation
P-IndexSlide21
Alabama P-Index
STP
Rate
Method
Erosion
RunoffSlide22
Alabama P-Index
Low Risk
Moderate Risk
High Risk
New
vs
Old
3 Risk
C
ategories
vs
4 Field VulnerabilitySlide23
Alabama P-Index
Other Practices that May
Reduce Risk
Reduced
tillage systems and cover crops to reduced runoff
Implementation of intensive grazing systems to reduced runoff
Use of precision application equipment to increase the accuracy of applications
Application of other products with the litter that may reduced P loss risk Slide24
Reduced Tillage Systems to Reduced Runoff
Soils
Infiltration (in/hr)
Sulivan
et al 2007Slide25
National
Nutrient Management Practice Standard
Use no-till/strip till, cover crops and crop rotation
Use variable-rate application based on crop yield, site-specific variability, soil characteristics, soil test and other factors
Soil test should not be older than 1 year
Use soil test, plant tissue analyses and field observations to check for secondary plant nutrient deficiencies or toxicity
Use adaptive nutrient management learning process to improve nutrient use efficiency
ConsiderationsSlide26
302.2 Adaptive Nutrient Management
A process used to plan, implement, evaluate, and adjust nutrient application strategies over time (multiple seasons).
The process is intended to allow for continued adjustment of the CPS Code 590 4Rs plan to achieve better nutrient-use efficiency.
General Manual
Part
402 –Nutrient ManagementSlide27
302.2 Adaptive Nutrient Management
The process is to be carried out by producers themselves, in cooperation with the land-grant university, or with other agencies and industry partners following prescribed protocols developed by the State NRCS, land-grant university, or other appropriate technical agencies and industry.
The results of adaptive nutrient management testing that meet the established protocols and are concurred with by NRCS and the land-grant university may be used in nutrient planning where appropriate.
General Manual
Part
402 –Nutrient ManagementSlide28
Current AL
Nutrient Management Practice Standard
Other needed information
Averaged Nutrient Value of Manure/Litter (Table 1)
Available N Provided by Cover Crop (Table 4)
Recommended Application Distance for Manure/Litter (Table 9)
Filter Strips
Riparian Forest Buffer Field BoardersSlide29
Needed Feedback
- N Leaching IndexSlide30
Needed Feedback
- N Leaching Index
- P IndexSlide31
Needed Feedback
- N Leaching Index
- P Index
- Soil and Manure/Litter TestingSlide32
Needed Feedback
- N Leaching Index
- P Index
- Soil and Manure/Litter Testing
-
Nutrient Efficiency StrategiesSlide33
Needed Feedback
- N Leaching Index
- P Index
- Soil and Manure/Litter Testing
- Nutrient Efficiency Strategies
Considerations
Reduced Tillage and Cover Crops Adaptive Nutrient ManagementSlide34
Needed Feedback
- N Leaching Index
- P Index
- Soil and Manure/Litter Testing
- Nutrient Efficiency Strategies
- Considerations
- Other Information Averaged Nutrient Values N Provided by Cover Crops Filter StripsSlide35
QUESTIONS?