@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/a6f6d11f-10ac-4d9b-a689-df1502fbbc25> a dcat:Dataset ;
    dct:description """<p>Nitrogen Source Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Fort Collins, Colorado<br />
Nitrogen fertilization is essential for optimizing crop yields; however, it increases N2O emissions. The study objective was to compare N2O emissions resulting from application of commercially available enhanced-effi ciency N fertilizers with emissions from conventional dry granular urea in irrigated cropping systems. These emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0-246 kg/ha from years 2007-2008 with intermediate rates of 157 kg/ha applied to the barley crop in corn-barley rotation and 56 kg/ha applied to the dry bens in the corn-dry bean rotation. Cropping systems included conventional-till continuous corn (CT-CC), no-till continuous corn (NT-CC), no-till corn–dry bean (NT-CDb), and no-till corn–barley (NT-CB). Nitrous oxide fluxes were measured during ten growing seasons using static, vented chambers and a gas chromatograph analyzer.  This work shows that the use of no-till and enhanced-effi ciency N fertilizers can potentially reduce N2O emissions from irrigated systems.</p>
""" ;
    dct:identifier "a6f6d11f-10ac-4d9b-a689-df1502fbbc25" ;
    dct:issued "2025-12-01T01:38:35.671446"^^xsd:dateTime ;
    dct:modified "2025-12-01T01:38:35.671450"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:title "Nitrogen Source Study for Greenhouse gas Reduction through Agricultural Carbon Enhancement network in Fort Collins, Colorado" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Grosso, Steve Del" ;
            vcard:hasEmail <mailto:steve.delgrosso@ars.usda.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/a6f6d11f-10ac-4d9b-a689-df1502fbbc25/resource/64c76bba-8f2d-4273-ad81-8269d3c800d6>,
        <https://data.amerigeoss.org/dataset/a6f6d11f-10ac-4d9b-a689-df1502fbbc25/resource/a1395870-9d9b-4849-971b-944043a386d7> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ckan",
        "geo",
        "geoss",
        "national",
        "north-america",
        "united-states" .

<https://data.amerigeoss.org/dataset/a6f6d11f-10ac-4d9b-a689-df1502fbbc25/resource/64c76bba-8f2d-4273-ad81-8269d3c800d6> a dcat:Distribution ;
    dct:description "COFOARD2_MeasHarvestFraction.csv" ;
    dct:format "CSV" ;
    dct:issued "2018-03-01T05:59:08.957895"^^xsd:dateTime ;
    dct:modified "2025-12-01T01:38:35.665265"^^xsd:dateTime ;
    dct:title "Comma Separated Values File" ;
    dcat:accessURL <https://gpsr.ars.usda.gov/csv/COFOARD2/COFOARD2_MeasHarvestFraction.csv> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/a6f6d11f-10ac-4d9b-a689-df1502fbbc25/resource/a1395870-9d9b-4849-971b-944043a386d7> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2018-03-01T05:59:08.957867"^^xsd:dateTime ;
    dct:modified "2025-12-01T01:38:35.664813"^^xsd:dateTime ;
    dct:title "Web Page" ;
    dcat:accessURL <https://gpsr.ars.usda.gov/COFOARD2> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .