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Data from: Ammonia emissions and corn yield response from injected versus surface‐applied liquid‐separated anaerobic digestate

Metadata Updated: October 2, 2025

Anaerobic digestion and digestate solid-liquid separation are manure treatment strategies used on commercial dairy farms. These treatment strategies typically result in increased total ammoniacal nitrogen concentration (TAN) and pH, and reduced dry matter content, which tend to increase ammonia (NH3) emissions following field application. We hypothesized that shallow disk injection of liquid-separated, anaerobically digested dairy manures, compared to surface application without incorporation on no-till farmland, would reduce ammonia-nitrogen concentration (NH3-N) emissions and conserve manure-nitrogen (manure-N) for crop production. Six corn (Zea mays L.) silage studies were established on commercial dairy farms across Pennsylvania in 2021-2023 with side-by-side field-scale treatment comparison strips replicated five times per farm. We quantified the impact of liquid-separated, anaerobically digested manure application methods on: i) NH3 emissions for 24 hours after application, ii) in-season soil nitrate-nitrogen (nitrate-N), iii) cornstalk nitrate at harvest, iv) corn silage production, and iv) returns on investment.

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons Attribution

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Dates

Metadata Created Date October 2, 2025
Metadata Updated Date October 2, 2025
Data Update Frequency irregular

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date October 2, 2025
Metadata Updated Date October 2, 2025
Publisher Agricultural Research Service
Maintainer
Identifier 10.26208/5SPZ-3H64
Data Last Modified 2025-09-23
Public Access Level public
Data Update Frequency irregular
Bureau Code 005:20, 005:18
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 18962ec2-f17e-4af1-b355-81531723d342
Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
Harvest Source Title USDA JSON
License https://creativecommons.org/licenses/by/4.0/
Old Spatial {"type": "Polygon", "coordinates": -80.52072, 39.72027, -74.6953, 39.72027, -74.6953, 42.26995, -80.52072, 42.26995, -80.52072, 39.72027}
Program Code 005:040
Source Datajson Identifier True
Source Hash 21ebae8aac6657adc4fd9d7ad19fb2b7b74088876dd54c586d11abf8f04c3e94
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -80.52072, 39.72027, -74.6953, 39.72027, -74.6953, 42.26995, -80.52072, 42.26995, -80.52072, 39.72027}
Temporal 2021-01-01/2023-12-31

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