02211naa a2200241 a 450000100080000000500110000800800410001902200140006002400360007410000160011024501190012626000090024550006150025452007760086965300230164565300330166865300380170165300310173965300270177065300260179770000190182377301270184210639742023-03-09       2023    bl uuuu     u00u1 u    #d  a0167-88097 a10.1016/j.agee.2023.1083922DOI1 aNÚÑEZ, A.  aChanges in soil organic matter after conversion from irrigated to dryland cropping systems.h[electronic resource]  c2023  aArticle history: Received 19 September 2022; Received in revised form 10 January 2023; Accepted 1 February 2023; Available online 9 February 2023. --  Correspondence author: Núñez, A.; INIA La Estanzuela, Ruta 50 km 11, Colonia, Uruguay; email:anunez@inia.org.uy -- FUNDING:  This work was supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under award number 2016-68007-25066, "Sustaining agriculture through adaptive management to preserve the Ogallala aquifer under a changing climate.", and by a Fulbright Scholarship for graduate studies to Agustín Núñez. --  aGlobal water resources are under increasing pressure, and some regions face the need to retire irrigation due to groundwater depletion or to meet governmental regulations. In arid and semiarid climates, irrigated lands tend to have more soil organic carbon (SOC) than non-irrigated croplands. However, little is known about how SOC might change following irrigation retirement. Our objective was to quantify changes in SOC and nitrogen stocks after irrigation retirement in semiarid agroecosystems of the High Plains. We sampled fields that stopped using irrigation and transitioned into either dryland crops or ungrazed perennial grasslands and compared SOC and nitrogen stocks in these fields with still irrigated and long-term dryland situations. © 2023 Elsevier B.V.  aAgricultural soils  aConservation Reserve Program  aMineral associated organic matter  aParticulate organic matter  aPhysical fractionation  aSoil inorganic carbon1 aSCHIPANSKI, M.  tAgriculture, Ecosystems and Environment, 2023, volume 347, article 108392. doi: https://doi.org/10.1016/j.agee.2023.108392