caa a22 4500 606217738 CHVBK 20210128101109.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s11104-015-2459-8 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2459-8 Biological nitrogen fixation in soybean in Argentina: relationships with crop, soil, and meteorological factors [Elektronische Daten] [D. Collino, F. Salvagiotti, A. Perticari, C. Piccinetti, G. Ovando, S. Urquiaga, R. Racca] Aims: This study aims to (i) asses the contribution of biological N fixation (%Ndfa) in the soybean production area of Argentina, (ii) build a model for predicting %Ndfa using crop, soil, and meteorological variables, and (iii) estimate %Ndfa at the country level using values obtained in this study. Methods: %Ndfa was assessed in paddocks and experimental plots located in an area 22-39° S and 56-66° W. %Ndfa was determined using the natural 15N abundance method. A complete data set of soil and meteorological variables (n-47) was used to develop a model for predicting %Ndfa. Results: A median value of %Ndfa in aboveground biomass of 60% (interquartile range 46-71%) was estimated. Larger %Ndfa values were observed in areas with high crops yields. When seed yield was above 3.7Mgha−1, effective rainfall during fallow and mean temperature in the seed-filling period explained %Ndfa. Below 3.7Mgha−1, soil phosphorus content, pH, and effective rainfall in the vegetative period explicated %Ndfa. Conclusions: Soybean production systems in Argentina showed larger %Ndfa than reported values in literature that may affect global N balances. Identified soil and meteorological variables may be useful for predicting %Ndfa in future studies, taking into account their spatial variation in the soil-plant system. Springer International Publishing Switzerland, 2015 Soybean nationallicence BNF nationallicence Nitrogen nationallicence Argentina nationallicence Collino D. Instituto de Fisiología y Recursos genéticos vegetales, INTA, 5000, Córdoba, Cordoba, Argentina aut Salvagiotti F. Agronomy Department, EEA Oliveros INTA, Ruta 11 km 353, C2206, Santa Fe, Argentina aut Perticari A. Instituto de Microbiología y Zoología Agrícola, INTA, Las Cabañas y De los Reseros C.C. 25, 1712, Castelar, Argentina aut Piccinetti C. Instituto de Microbiología y Zoología Agrícola, INTA, Las Cabañas y De los Reseros C.C. 25, 1712, Castelar, Argentina aut Ovando G. Climatología Agrícola, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, 5000, Córdoba, Argentina aut Urquiaga S. Embrapa Agrobiologia, Caixa Postal 74505 CEP, 23851-970, Seropédica, DF, Brazil aut Racca R. Instituto de Fisiología y Recursos genéticos vegetales, INTA, 5000, Córdoba, Cordoba, Argentina aut Plant and Soil Springer International Publishing 392/1-2(2015-07-01), 239-252 0032-079X 392:1-2<239 2015 392 11104 https://doi.org/10.1007/s11104-015-2459-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2459-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Collino D. Instituto de Fisiología y Recursos genéticos vegetales, INTA, 5000, Córdoba, Cordoba, Argentina aut NATIONALLICENCE 700 1- Salvagiotti F. Agronomy Department, EEA Oliveros INTA, Ruta 11 km 353, C2206, Santa Fe, Argentina aut NATIONALLICENCE 700 1- Perticari A. Instituto de Microbiología y Zoología Agrícola, INTA, Las Cabañas y De los Reseros C.C. 25, 1712, Castelar, Argentina aut NATIONALLICENCE 700 1- Piccinetti C. Instituto de Microbiología y Zoología Agrícola, INTA, Las Cabañas y De los Reseros C.C. 25, 1712, Castelar, Argentina aut NATIONALLICENCE 700 1- Ovando G. Climatología Agrícola, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, 5000, Córdoba, Argentina aut NATIONALLICENCE 700 1- Urquiaga S. Embrapa Agrobiologia, Caixa Postal 74505 CEP, 23851-970, Seropédica, DF, Brazil aut NATIONALLICENCE 700 1- Racca R. Instituto de Fisiología y Recursos genéticos vegetales, INTA, 5000, Córdoba, Cordoba, Argentina aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 392/1-2(2015-07-01), 239-252 0032-079X 392:1-2<239 2015 392 11104