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| Bibliography for the Regional Assessment of Climate Variability and Impact of Climate Forecasts on the Americas. | ||
| FOCUS: Southeast South America . |
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ENSO EFFECTS ON YIELDS AND ECONOMIC RETURNS
OF WHEAT, CORN, AND SOYBEAN IN ARGENTINA [PDF] / [Abstract] J. W. Hansen and J. W. Jones (University of Florida), G. Magrin, S. G. Meira, E. R. Guevara, M. I. Travasso and R. A. Diaz (INTA), M. Marino and H. Hordij (Servicio Meteorologico Nacional), C. Harwell and G. Podesta (University of Miami) Pp. 89-90 in Actas del VII Congreso Argentino y VII Congreso Latinoamericano e Iberico de Meteorologia. Buenos Aires, Argentina, 2-6 September, 1996. Associations between Grain Crop Yields in Central-eastern Argentina and El Niño-Southern Oscillation[PDF] / [Abstract] GUILLERMO P. PODESTA Rosenstiel School of Marine and Atmospheric Science, University of Miami Miami, USA CARLOS D. MESSINA Facultad de Agronom’a, Universidad de Buenos Aires Buenos Aires, Argentina MARTEN O. GRONDONA and GRACIELA O. MAGRIN Instituto de Clima y Agua, Instituto Nacional de Tecnolog’a Agropecuaria Castelar, Argentina Submitted to Journal of Climate, April 1998 |
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ENSO EFFECTS ON YIELDS AND ECONOMIC RETURNS OF WHEAT, CORN, AND SOYBEAN IN ARGENTINA [PDF] J. W. Hansen and J. W. Jones (University of Florida), G. Magrin, S. G. Meira, E. R. Guevara, M. I. Travasso and R. A. Diaz (INTA), M. Marino and H. Hordij (Servicio Meteorologico Nacional), C. Harwell and G. Podesta (University of Miami) Pp. 89-90 in Actas del VII Congreso Argentino y VII Congreso Latinoamericano e Iberico de Meteorologia. Buenos Aires, Argentina, 2-6 September, 1996. Abstract: The El Niño-Southern Oscillation (ENSO) affects rainfed agriculture in the Pampas of Argentina by influencing rainfall. ENSO effects on rainfall vary with location and month. Early season water stress to summer crops is generally more likely in NiŇa years. Predicted benefits of tailoring soybean planting dates to forecasted ENSO phases range from 2.36 to 32.38 US$ ha. -1. 
Associations between Grain Crop Yields in Central-eastern Argentina and El Niño-Southern Oscillation[PDF] GUILLERMO P. PODESTA Rosenstiel School of Marine and Atmospheric Science, University of Miami Miami, USA CARLOS D. MESSINA Facultad de Agronom’a, Universidad de Buenos Aires Buenos Aires, Argentina MARTEN O. GRONDONA and GRACIELA O. MAGRIN Instituto de Clima y Agua, Instituto Nacional de Tecnolog’a Agropecuaria Castelar, Argentina Submitted to Journal of Climate, April 1998 Abstract. Associations are investigated between yields of major crops in the Argentine Pampas (central-eastern Argentina) and El Niño-Southern Oscillation (ENSO) phase. Maize and sorghum show a tendency towards higher (lower) yield anomalies during warm (cold) ENSO events. In both cases, the depression of yields during cold events is, on average, larger and less variable than yield increases during warm events. A yield decrease during cold events is also observed in soybean yields, although the effect of warm events is not significant. Cold events appear to be slightly more favorable for sunflower yields. Wheat, the only winter crop considered, did not show an association with ENSO. Precipitation anomalies during late spring-summer (the period with strongest ENSO signal in the Pampas) are summarized through principal component analysis. Precipitation anomalies during November-January are significantly correlated with maize, sorghum, and soybean yield anomalies. In turn, those precipitation anomalies show a distinct ENSO signal. Late spring-early summer precipitation, then, appears to mediate associations between ENSO phase and yields of maize, sorghum, and soybean in the Pampas. |