ARTICLE
TITLE

Region-level yield and area price elasticities for Chilean wheat incorporating climate variables.

SUMMARY

Wheat yields have increased in Chile in the last thirty years due in part to incentives, increased input use and improved varieties. Region-specific price elasticities of per-hectare yields and planted hectares are estimated using region-level data for the period 1975-2007. Price-yield and price-hectare elasticities are similar, although slightly lower than those obtained by Morales and Foster (2002) in all regions, ranging between 0.33 and 0.73 for yields and between 0 and 0.43 for hectares. Values of price elasticity for total production range between 0.38 and 1.12. For two of the regions studied, climate variables were available and their inclusion results in a reduction in of the elasticity of total production with respect to price. The results suggest that the inclusion of climate variables should be considered when estimating producer responses to prices and when projecting the likely impacts of forecasted climate changes on producer decisions.  Los rendimientos de trigo han aumentado en Chile en los últimos 30 años, llegando a obtener rendimientos promedio del orden de 4,5 ton ha-1 al año 2007. Este aumento en rendimientos se debe en parte al progreso tecnológico. Se realizan estimaciones de elasticidades preciosuperficie y elasticidades precio-rendimiento, actualizando un modelo planteado por Morales y Foster (2002). El trabajo incorpora variables climáticas a modelos de rendimiento de trigo en dos regiones para las cuáles había datos disponibles con el propósito de comparar los resultados sobre la elasticidad total en los modelos con y sin variables climáticas. Las elasticidades para el periodo actualizado se reducen en relación a las obtenidas por Morales y Foster (2002). Al incorporar datos climáticos la elasticidad precio-rendimiento se reduce en magnitud y en nivel de significancia estadística. Este resultado demuestra que es posible sobreestimar la elasticidad precio-rendimiento si no se incluyen las variables climáticas. La investigación a futuro debe tomar en cuenta esta consideración y se debe ser cuidadoso con las estimaciones de la sensibilidad de la superficie sembrada y de rendimiento frente a los precios del trigo en Chile.

 Articles related

Heikki Lehtonen, Taru Palosuo, Panu Korhonen and Xing Liu    

The sustainable intensification of farming systems is expected to increase food supply and reduce the negative environmental effects of agriculture. It is also seen as an effective adaptation and mitigation strategy in response to climate change. Our aim... see more

Revista: Agriculture

Gerald F. Dirnberger,Hubert Sterba    

Aim of the study: This paper presents the most appropriate ways to estimate the species proportions by area in mixed stands of Norway spruce (Picea abies L. Karst.) and European beech (Fagus sylvatica L.) by comparing stand level and individual tree leve... see more

Revista: Forest Systems

Susana Barreiro,João Rua,Margarida Tomé    

Aim of the study: The existing stand level forest simulators available in Portugal were not developed with the aim of including up-to-date model versions and were limited in terms of accounting for forest management. The simulators’ platform, sIMfLOR was... see more

Revista: Forest Systems

Míriam Piqué-Nicolau,Miren del Río,Rafael Calama,Gregorio Montero    

A yield model was developed to simulate silviculture alternatives for Pinus pinea L. in north-east Spain (Catalonia). The model uses several functions to estimate the main silvicultural parameters at stand level and a disaggregation system to predict dia... see more

Revista: Forest Systems

L. Gurovich, J. Stern    

Variabilidad espacial de la velocidad de infiltración del agua en el suelo. I. Generación de datosCiencia e Investigación Agraria, Revista latinoamericana en Ciencias de la Agricultura, está indexada en las siguientes bases de datos: Thomson ISI, Alerta ... see more