Expansion of maize production in a semi - arid region of Argentina climatic and edaphic constraints and their implications on crop management

The Southwestern Pampas (SWP) is a semi-arid region of Argentina with the presence of a widespread caliche layer that limits soil depth. In this region, maize production has recently expanded with scarce information on appropriate management practices. The objective of this work was to provide an ag...

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Detalles Bibliográficos
Otros Autores: Rotili, Diego Hernán, Giorno, Agustín, Tognetti, Pedro Maximiliano, Maddonni, Gustavo Angel
Formato: Artículo
Lenguaje:Inglés
Materias:
SOWING DATE
PLANT POPULATION DENSITY
GRAIN YIELD
CROP EVAPOTRANSPIRATION
PLANT TRANSPIRATION
ENSO
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2019rotili.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 |a Expansion of maize production in a semi - arid region of Argentina  |b climatic and edaphic constraints and their implications on crop management 
520 |a The Southwestern Pampas (SWP) is a semi-arid region of Argentina with the presence of a widespread caliche layer that limits soil depth. In this region, maize production has recently expanded with scarce information on appropriate management practices. The objective of this work was to provide an agro-climatic and eco-physiological framework of cultural changes of maize cropping systems of the SWP and the main implications of the climatic and edaphic constraints on crop management decisions. The work combined i) public data of regional maize cultivated area for the period 2008–2015 alongside with farmers’ cropping management trends related to sowing dates and plant population density (PPD); ii) on-field experimental data generated from trials in different sites in the SWP sown at different dates, soil depths and PPDs; and iii) a crop water-economy characterization with a probabilistic approach by means of historical climatic series (identifying the El Niño Southern Oscillation (ENSO) phases) in three locations in the SWP across a longitudinal range between the 800mm and 600mm isohyets. In the 2008–2015 period, maize area increased five-fold, median sowing date delayed one month and PPD decreased from ca. 7.2 plm-2 to 3.4 plm-2. Late-sown crops (7564 kg ha-1; CV=19%) out-yielded earlysown crops (5888 kg ha-1; CV=42%) with less variability across environments. Crop evapotranspiration during the cycle (ETacycle) slightly decreased (P50=3–32mm lower) with the delay of sowing, but the proportion of crop evapotranspiration during the reproductive period was significantly higher. ETacycle of late crops did not vary within PPD, but transpiration per plant decreased with PPD and increased in deep soils, especially at low densities. The impacts of sowing date and PPD did not vary among ENSO phases, not supporting the use of ENSO as a decision criterion for maize management in the SWP. 
650 |2 Agrovoc  |9 26 
653 |a SOWING DATE 
653 |a PLANT POPULATION DENSITY 
653 |a GRAIN YIELD 
653 |a CROP EVAPOTRANSPIRATION 
653 |a PLANT TRANSPIRATION 
653 |a ENSO 
700 1 |a Rotili, Diego Hernán  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura. 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.  |9 37794 
700 1 |a Giorno, Agustín  |u Asociación Argentina de Consorcios Regionales de Experimentación Agrícola (AACREA). Buenos Aires, Argentina.  |9 29198 
700 1 |a Tognetti, Pedro Maximiliano  |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.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina.  |9 12692 
700 1 |a Maddonni, Gustavo Angel  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura. 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.  |9 7271 
773 0 |t Agricultural water management  |g Vol.226 (2019), art.105761, 14 p., tbls., grafs., mapas  |w SECS000012 
856 |f 2019rotili  |i En reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2019rotili.pdf  |x ARTI202204 
856 |u https://www.elsevier.com/  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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