Using site - specific nitrogen management in rainfed corn to reduce the risk of nitrate leaching

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Managing nitrogen (N) to achieve yield potential and limit losses to the environment is challenging dueto the temporal and spatial variability in crop N uptake which affects the distribution of soil - N. Nitrogen fertilization using site - specific management (SSM) is one of a number of strategies t...

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Detalles Bibliográficos
Otros Autores: Muschietti Piana, María del Pilar, Cipriotti, Pablo Ariel, Urricariet, Alicia Susana, Peralta, Nahuel Raúl, Niborski, Mauricio José
Formato: Artículo
Lenguaje:Inglés
Materias:
MANAGEMENT ZONES
YIELD POTENTIAL
SOIL RESIDUAL - NITROGEN
WATER USE EFFICIENCY
DROUGHT
NITROGEN USE EFFICIENCY
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2018muschiettipiana.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Using site - specific nitrogen management in rainfed corn to reduce the risk of nitrate leaching 
520 |a Managing nitrogen (N) to achieve yield potential and limit losses to the environment is challenging dueto the temporal and spatial variability in crop N uptake which affects the distribution of soil - N. Nitrogen fertilization using site - specific management (SSM) is one of a number of strategies that can improve the efficiency of N use and reduce the losses of N to the environment from cropping systems. The aim was toassess: (i) corn (Zea mays L.) grain yield and N uptake; and (ii) soil residual and potentially leachable - N,and its relationship with N and water use efficiency using SSM vs. uniform management (UM) strategiesin high-(HP) and low-(LP) productivity zones on soils of the Inland Pampas of Argentina. Differences insoil residual and potentially leachable-N, corn grain yield, N uptake, water and N use efficiency were compared between treatments. In HP - zones, corn grain yield and total biomass were 2.7 and 4.2 Mgha−1higher with SSM than UM, and corn grain N uptake and total N uptake increased by 21% and 18% with SSM when compared to UM. Soil residual - N at field scale was reduced by 18% with SSM. Marginal differences in potentially leachable - N among treatments were observed throughout the soil profile; the highest nitrate concentration was 6.6 mg kg−1in LP - zones with UM within the 210–240 cm soil layer.Overall corn water use efficiency in total biomass was 16% higher with SSM than with UM in both LP - andHP - zones. Using SSM in the LP - zones increased corn N use efficiency in grain and total biomass by 50%and 43% respectively. In this context, SSM can be considered as a conservation practice that optimizes Nand water use efficiency by corn under dry conditions. 
653 |a MANAGEMENT ZONES 
653 |a YIELD POTENTIAL 
653 |a SOIL RESIDUAL - NITROGEN 
653 |a WATER USE EFFICIENCY 
653 |a DROUGHT 
653 |a NITROGEN USE EFFICIENCY 
700 1 |9 22224  |a Muschietti Piana, María del Pilar  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Buenos Aires, Argentina. 
700 1 |9 20940  |a Cipriotti, Pablo Ariel  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
700 1 |9 8376  |a Urricariet, Alicia Susana  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Buenos Aires, Argentina. 
700 1 |a Peralta, Nahuel Raúl  |u Monsanto. Departamento de Tecnología y Desarrollo de Maíz. Pergamino, Argentina.  |9 50867 
700 |a Niborski, Mauricio José  |u Monsanto. Departamento de Tecnología y Desarrollo de Maíz. Pergamino, Argentina.  |9 23614 
773 0 |t Agricultural water management  |w SECS000012  |g Vol.199 (2018), p.61-70, mapas, grafs., tbls. 
856 |f 2018muschiettipiana  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2018muschiettipiana.pdf  |x ARTI201809 
856 |z LINK AL EDITOR  |u http://www.elsevier.com 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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