Presentation on theme: "Nutrient Management: Planning and Trends"— Presentation transcript:
1Nutrient Management: Planning and Trends Erin BusscherGraduate Student: Environmental Science and PolicyBiological Technician, NRCS
2What is Nutrient Management? Managing the amount, source, placement, form, and timing of the application of nutrients and soil amendments
3Purposes of Nutrient Management To budget and supply nutrients for plant productionTo properly utilize manure or organic by-products as a plant nutrient sourceTo minimize agricultural non-point source pollution of surface and ground water resourcesTo maintain or improve the physical, chemical, and biological condition of soil
4Why develop a nutrient management plan? Increase efficiency of all nutrient sourcesReduce pollution and environmental riskIncrease profit $$$$$Optimize nutrient supply for maximum crop yieldsLess money spent on unnecessary fertilizers, and time/equipment to apply them
5Who has a nutrient management plan? Large farms with a Wisconsin Pollution Discharge and Elimination System (WPDES) permit (administered by the DNR)Farms in counties with manure storage ordinances that require a planFarms that are subject to other local ordinances requiring a planFarms involved in voluntary programs (EQIP)
6Nutrient Management in Kewaunee County Red=Areas under an EQIP 590 planBlue=DNR or county permit farms
7Components of a Nutrient Management Plan (1) Field Map(2) Soil Tests(3) Crop Sequence(4) Estimated Yield(5) Sources and Forms(6) Sensitive Areas(7) Recommended Rates(8) Recommended Timing(9) Recommended Methods(10) Annual Review and Update
9Soil Tests How much of each nutrient (N, P, K) is in the soil profile? What is the soil pH and organic matter content?
10Crop Sequence Determine the past crop sequence Consult the existing conservation planTalk to the producerHas a N-fixing crop such as alfalfa or soybeans been grown in the past?Determine the type of tillage usedMulch till and No till increase OM
11Estimated Crop YieldAccurate yield estimates are crucial for determining nutrient budgets and can dramatically improve nutrient use efficiency.Yields can vary from field to field due to:Soil type, drainage, presence of insects, weeds or disease
12Sources and Forms Questions to ask: What types of nutrient sources are added to fields? (N, P)What form are these nutrients in? (manure, fertilizer, N-fixing crops)What are the nutrient contents of these sources? (manure nutrient test results, N: P: K ratio)
13Sensitive Areas: Manure Spreading Hazard Map Red=No spreading; bedrock within 10 inchesRed hash marks= No winter spreading; must incorporate within 72 hours during the rest of year
14Recommendations for Nutrient Application Rates of application (how much)Timing of application (time of year, before/during/after crop planting or harvest)Method of application (surface or injection)
15How is Nutrient Management Planning Being Implemented to Respond to the Trends in Agricultural Practices?
16Trends The structure of animal agriculture is changing Shift towards larger animal operationsMore livestock kept in confinementAnimal feeding operations are more spatially concentrated
17Confined animal units by farm size, 1982 and 1997
18Number of counties with county-level excess nutrients
21Implications of Current Trends Increased problems with utilization and disposal of wasteAmount of nutrients produced exceed the land’s capacity to assimilate themThis type of problem is becoming more pronounced
22Reactions Federal government EPA: New regulation affecting Concentrated Animal Feeding Operations (CAFOs) on February 12, 2003Ensures proper management of manure that is generated on site by requiring the development and implementation of a site-specific nutrient management plan as a part of the application process for a National Pollution Discharge Elimination System (NPDES) permit.
23Reactions Federal government USDA-NRCS As part of the Farm Bill, the Environmental Quality Incentives Program (EQIP) provides cost-sharing and technical assistance for producers to develop nutrient management plans
24Reactions State government: WI WDNR NR151: includes performance standards and prohibitions for farmsATCP 50 (DATCP): identifies conservation practices that farmers must follow; sets requirements for nutrient management plansNR 243 and WPDES Permitting system: ensures the proper management of farm operations
25ConclusionsNutrient management plans are the smart way to manage nutrients.Plans can increase profits as well as protect the environment.Many farms do not have a plan to manage the nutrients produced or applied to their fields.Costs to develop a plan may be prohibitive for small producers.
26Thanks to: Kewaunee County Land and Water Conservation Department Steve Hanson, Conservation Planner/ GIS CoordinatorNRCS: Kewaunee Service CenterJohn Malvitz, Soil ConservationistJoe Johnson, District Conservationist