Anaerobically incubated nitrogen improved nitrogen diagnosis in corn
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 th...
| Main Authors: | , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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2017
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| Online Access: | http://hdl.handle.net/20.500.12123/1283 https://dl.sciencesocieties.org/publications/aj/abstracts/109/1/291 |
| _version_ | 1855482861694484480 |
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| author | Orcellet, Juan Manuel Sainz Rozas, Hernan Rene Wyngaard, Nicolás Echeverria, Hernan Eduardo Reussi Calvo, Nahuel Ignacio |
| author_browse | Echeverria, Hernan Eduardo Orcellet, Juan Manuel Reussi Calvo, Nahuel Ignacio Sainz Rozas, Hernan Rene Wyngaard, Nicolás |
| author_facet | Orcellet, Juan Manuel Sainz Rozas, Hernan Rene Wyngaard, Nicolás Echeverria, Hernan Eduardo Reussi Calvo, Nahuel Ignacio |
| author_sort | Orcellet, Juan Manuel |
| collection | INTA Digital |
| description | 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. |
| format | Artículo |
| id | INTA1283 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA12832019-03-22T14:11:46Z Anaerobically incubated nitrogen improved nitrogen diagnosis in corn Orcellet, Juan Manuel Sainz Rozas, Hernan Rene Wyngaard, Nicolás Echeverria, Hernan Eduardo Reussi Calvo, Nahuel Ignacio Nitrógeno Maíz Tratamiento Anaeróbico Nitrogen Maize Anaerobic Treatment 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. EEA Balcarce Fil: Orcellet, Juan Manuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina Fil: Reussi Calvo, Nahuel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fertilab. Laboratiorio de Suelos; Argentina 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 Fil: Wyngaard, Nicolás. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina 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 2017-09-21T14:10:06Z 2017-09-21T14:10:06Z 2017 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/1283 https://dl.sciencesocieties.org/publications/aj/abstracts/109/1/291 0002-1962 (Print) 1435-0645 (Online) doi:10.2134/agronj2016.02.0115 eng info:eu-repo/semantics/restrictedAccess application/pdf Agronomy journal 109 (1) : 291-298. (2017) |
| spellingShingle | Nitrógeno Maíz Tratamiento Anaeróbico Nitrogen Maize Anaerobic Treatment Orcellet, Juan Manuel Sainz Rozas, Hernan Rene Wyngaard, Nicolás Echeverria, Hernan Eduardo Reussi Calvo, Nahuel Ignacio Anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| title | Anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| title_full | Anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| title_fullStr | Anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| title_full_unstemmed | Anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| title_short | Anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| title_sort | anaerobically incubated nitrogen improved nitrogen diagnosis in corn |
| topic | Nitrógeno Maíz Tratamiento Anaeróbico Nitrogen Maize Anaerobic Treatment |
| url | http://hdl.handle.net/20.500.12123/1283 https://dl.sciencesocieties.org/publications/aj/abstracts/109/1/291 |
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