Mass balance analyses of nutrients on California dairies to evaluate data quality for regulatory review

Miller, Christine M.F.; Price, Patricia L.; Meyer, Donald L.

doi:10.1016/j.scitotenv.2016.10.092

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…California has experienced a contraction in the number of dairies over time, namely a reduction by 30% from 2002 to 2012 (34). Hence it is possible that some of the infrastructure from now-closed facilities may still be standing and would be included in the aerial imagery identification.…”

Section: Percentage Of Ipcc Emissionmentioning

confidence: 99%

California’s methane super-emitters

Duren

Thorpe

Foster

et al. 2019

Nature

284

306

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Section: Percentage Of Ipcc Emissionmentioning

confidence: 99%

California’s methane super-emitters

Duren

Thorpe

Foster

et al. 2019

Nature

284

306

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“…A whole-farm approach provides additional insights and opportunities to improve nutrient use through optimized feed formulation, alternative crop rotations, and manure export. Federal U.S. public policy has not engaged this approach for farm nutrient management, but state-based initiatives have emerged recently in New York, Virginia, Pennsylvania, and California, primarily for dairy production (Cela et al, 2014a;Pearce and Maguire, 2020;Holly et al, 2019;Miller et al, 2017). Promising impacts from example initiatives are discussed in detail in a later section of this article.…”

Section: Whole-farm Nutrient Balancementioning

confidence: 99%

Addressing Nutrient Imbalances in Animal Agriculture Systems

Sharara¹,

Kolesch²,

Cortus³

et al. 2022

Journal of the ASABE

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HighlightsAnimal agriculture intensification has greatly affected nutrient cycling and circularity in food production systems.Various nutrient balance methods are developed to improve nutrient management at various spatial scales.Balance-derived thresholds for action are identified using real-life examples in dairy production.Outreach and knowledge exchange are critical for development, adoption, and improvement of nutrient balance methods.Abstract. Animal agriculture is a major consumer and generator of both macro- and micronutrients. Intensification and regional concentration of animal production, due to economic and logistical advantages, have altered nutrient fluxes in agriculture systems, causing increased stock of nutrients in soils and, consequently, their emission to air and transport to surface water and groundwater. Established nutrient and manure planning frameworks, while effective in addressing nutrient point sources and using manure to enhance fertility and soil quality, have not been wholly successful in addressing farm- and region-scale challenges with nutrient concentrations. This review article addresses nutrient management issues associated with modern animal agriculture by advancing the use of nutrient budgets and balances. This is accomplished by establishing core concepts for nutrient budgets and balances as they apply to animal agriculture. Relevant spatial scales for these budgets are reviewed, including field, whole-farm, and watershed scales, along with proposed methodologies and data sources for each. This study also identifies existing region- and commodity-specific metrics (when available) for use as thresholds for corrective action toward more balanced nutrient budgets. Finally, recommendations for the community of practitioners, researchers, and educators are provided to address nutrient imbalance in animal agriculture systems. At farm and region scale, nutrient balance investments will be needed to strengthen accounting methodologies, develop appropriate data sources for measurements, identify thresholds for action, and apply the methods in appropriate settings and decisions. Data availability and uncertainty are recognized as key limitations facing wider adoption of these concepts, particularly considering data ownership and privacy concerns. The lack of transparent datasets that capture current animal production practices and their impact on manure composition and nutrient cycling is a gap facing these methodologies. The lack of engagement by practitioners and producers in the development phase of such tools greatly affects their adoption and utility. The need for continued engagement in establishing accepted methodologies, training, data collection, and education are crucial to establish farm- and region-scale methods and measure their value to nutrient planning over time. Keywords: Farm scale, Livestock, Manure nutrients, Nutrient budget, Poultry, Regional scale.

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