NWISRL South Farm Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Kimberly, Idaho

Principal Investigator(s):  View help for Principal Investigator(s) US Department of Agriculture; National Agricultural Library

Version:  View help for Version V1

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IDKM_csv_data.zip application/zip 172.2 KB 06/26/2026 11:46:AM
adc_metadata.json application/json 21.3 KB 06/26/2026 09:04:PM
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Project Citation: 

US Department of Agriculture, and National Agricultural Library. NWISRL South Farm Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Kimberly, Idaho. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2026-06-27. https://doi.org/10.3886/E250373V1

Project Description

Project Title:  View help for Project Title NWISRL South Farm Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Kimberly, Idaho
Summary:  View help for Summary NWISRL South Farm Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Kimberly, Idaho We report N2O emissions along with CO2 and CH4 from a silage corn (2013)–barley (2014)–alfalfa (2015) rotation under conventional tillage and sprinkler irrigation. The main study objectives were to evaluate the effectiveness of an enhanced-efficiency fertilizer (SuperU; stabilized granular urea with urease and nitrification inhibitors) to reduce N2O emissions when compared to granular urea, and determine GHG emissions from fall-applied dairy manure or composted dairy manure and spring-applied dairy manure. Nitrogen treatments were only applied during the first two years of the study. Compared to urea, SuperU plots emitted 53% less N2O during the monitoring period with corn, while no N2O emission reductions occurred in 2014 with barley. The N2O-N emission losses as a percentage of total N applied were 0.21% and 0.04% for urea and SuperU in 2013, respectively, with losses of 0.05% from both urea fertilizers in 2014. On average, N2O fluxes from fall and spring manure were statistically similar and greater than the other N treatments in 2014, and there was a lasting manure treatment effect on emissions when under alfalfa. Carbon dioxide fluxes, on average, were greatest from fall- and spring-applied manure during the first two years of study. Methane fluxes were negative on average, indicating microbial oxidation, and no differences occurred among the N treatments. Silage corn, barley grain, and alfalfa yields were statistically similar among all N treatments. This work demonstrates that SuperU can potentially reduce N2O emissions from irrigated cropping systems in the semiarid western United States while not affecting crop yields.


Resources in this dataset:

Resource Title: Kimberly, ID NWISRL South Farm Study (IDKM) CSV data. File Name: IDKM_csv_data.zipResource Description: CSV format data on Experimental Units, Field Sites, Greenhouse Gas Flux, Residue Management, Soil Chemistry, Soil Physics, Amendments, Growth Stages, Planting, Tillage, Persons, Treatments, Weather Daily, Weather Station.

Resource Title: Kimberly, ID NWISRL South Farm Study (IDKM) CSV data.

File Name: IDKM_csv_data.zip

Resource Description: CSV format data on Experimental Units, Field Sites, Greenhouse Gas Flux, Residue Management, Soil Chemistry, Soil Physics, Amendments, Growth Stages, Planting, Tillage, Persons, Treatments, Weather Daily, Weather Station.
Original Distribution URL:  View help for Original Distribution URL https://agdatacommons.nal.usda.gov/articles/dataset/NWISRL_South_Farm_Study_for_Greenhouse_gas_Reduction_through_Agricultural_Carbon_Enhancement_network_in_Kimberly_Idaho/24664956

Scope of Project

Subject Terms:  View help for Subject Terms farming; Environment; NP211; NP212; GRACEnet; data.gov; ARS
Geographic Coverage:  View help for Geographic Coverage Idaho
Time Period(s):  View help for Time Period(s) 10/9/2012 – 7/24/2017
Data Type(s):  View help for Data Type(s) observational data
Collection Notes:  View help for Collection Notes DOI: 10.15482/USDA.ADC/1504011 Citation: Dungan, Robert (2021). NWISRL South Farm Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Kimberly, Idaho. U.S. Department of Agriculture - Agricultural Research Service. https://doi.org/10.15482/USDA.ADC/1504011 (Downloaded 2026-06-26)


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V1 [2026-06-27]

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