Community Research and Development Information Service - CORDIS

Abstract

Climate variability is one of the main causes of the inter-annual fluctuations in agricultural production, particularly non-irrigated agriculture. There is much evidence with regard to the dependency of crop yields to the water availability at the critical stages of the crop cycle. Although to a much lesser extent, both solar radiation and temperature also influence inter-annual changes in crop yields.

Over the last twenty years, relevant advances in the analyses of agricultural processes have been achieved. As a result, some methods have been created to determine crop growth, development and yield using agro-meteorological information and data about the soil and crop. The most advanced simulation models include meteorological and hydrological processes, and stages in the transportation of nutrients and vegetation growth. These models allow the analysis and prediction of the interactive effects between the growth and the yield of crops. For these models to operate, they have to be calibrated. The calibration and assessment of the models simulating the yield of crops is a stage previous to their actual use within an operational agricultural productivity forecasting system.

Additional information

Authors: RAVELO A, CREAN, Universidad de Cordoba, Cordoba (AR);PANCHUELO A, CONICET (AR);ROJAS O, European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Ispra (IT);NEGRE T, European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Ispra (IT);CHERLET M (Editors), FAO GIEWS, Rome (IT)
Bibliographic Reference: EUR 20969 EN (2003), Various paging and CD-ROM. Free of charge
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9843 or +39-033278-9864 Fax: +39-033278-9623 E-mail: jrc-publications-office@ec.europa.eu
ISBN: ISBN: 92-894-6522-0
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