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Current N diagnostic methods for corn (Zea mays L.) are often based on the nitrate nitrogen (NO3 ––N) concentration before planting (pre-plant nitrate test, PPNT) and nitrate nitrogen (NO3––N) concentration at V6 stage (PSNT). These tests
provide scant information on soil N mineralization during the growing season, which can supply a considerable proportion of corn N requirements. The objective of our study was to evaluate if in-season N recommendations
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dc.contributor.author | Orcellet, Juan Manuel | |
dc.contributor.author | Sainz Rozas, Hernan Rene | |
dc.contributor.author | Wyngaard, Nicolás | |
dc.contributor.author | Echeverria, Hernan Eduardo | |
dc.contributor.author | Reussi Calvo, Nahuel Ignacio | |
dc.date.accessioned | 2017-09-21T14:10:06Z | |
dc.date.available | 2017-09-21T14:10:06Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0002-1962 (Print) | |
dc.identifier.issn | 1435-0645 (Online) | |
dc.identifier.other | doi:10.2134/agronj2016.02.0115 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/1283 | |
dc.identifier.uri | https://dl.sciencesocieties.org/publications/aj/abstracts/109/1/291 | |
dc.description.abstract | Current N diagnostic methods for corn (Zea mays L.) are often based on the nitrate nitrogen (NO3 ––N) concentration before planting (pre-plant nitrate test, PPNT) and nitrate nitrogen (NO3––N) concentration at V6 stage (PSNT). These tests provide scant information on soil N mineralization during the growing season, which can supply a considerable proportion of corn N requirements. The objective of our study was to evaluate if in-season N recommendations could be improved by inclusion of a N mineralization potential estimator. We conducted field experiments (n = 35) in three different areas and in two planting dates. At each site we evaluated PPNT, PSNT, and NH4–N released during anaerobic incubation (Nan), which were then related to corn yield in unfertilized plots (0N) and corn response to nitrogen fertilization (Nresp%) using multiple regression analysis. The sole incorporation of Nan to PPNT and PSNT models improved their capacity to predict corn yield in 0N plots and Nresp% only in areas with similar edaphic-climatic characteristics. Independently of the geographical region, when PPNT and PSNT were combined with Nan, texture, and temperature, their capacity to predict yield in 0N plots was increased (PPNT: from R2 0.02–0.47; PSNT: from R2 0.09–0.53), as it was their capacity to estimate Nresp% (PPNT: from R2 0.06–0.23; PSNT: from R2 0.19–0.42). The inclusion of Nan can improve traditional N diagnostic models when it is combined with edaphic/climatic properties that account for the mineralization rate of this N pool. | eng |
dc.format | application/pdf | eng |
dc.language.iso | eng | |
dc.rights | info:eu-repo/semantics/restrictedAccess | eng |
dc.source | Agronomy journal 109 (1) : 291-298. (2017) | eng |
dc.subject | Nitrógeno | |
dc.subject | Nitrogen | eng |
dc.subject | Maíz | |
dc.subject | Maize | eng |
dc.subject | Tratamiento Anaeróbico | |
dc.subject | Anaerobic Treatment | eng |
dc.title | Anaerobically incubated nitrogen improved nitrogen diagnosis in corn | eng |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/acceptedVersion | eng |
dc.description.origen | EEA Balcarce | |
dc.gic | 153927 | |
dc.description.fil | Fil: Orcellet, Juan Manuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina | |
dc.description.fil | Fil: Reussi Calvo, Nahuel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fertilab. Laboratiorio de Suelos; Argentina | |
dc.description.fil | Fil: Sainz Rozas, Hernan Rene. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fertilab. Laboratiorio de Suelos; Argentina | |
dc.description.fil | Fil: Wyngaard, Nicolás. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina | |
dc.description.fil | Fil: Echeverria, Hernan Eduardo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina | |
dc.subtype | cientifico |
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