ISHS Acta Horticulturae 664: IV International Symposium on Irrigation of Horticultural Crops
TALCA IRRIGATION MANAGEMENT SYSTEM (TIMAS) FOR GRAPEVINE |
| Authors: | S. Ortega-Farías, C. Acevedo, A. Acevedo, B. Leyton |
| Keywords: | irrigation scheduling, soil water content, water use efficiency, TDR, crop coefficient |
| DOI: | 10.17660/ActaHortic.2004.664.63 |
| Abstract:
The general interest in irrigation management arose from an increasing demand for higher yield quality due to the rapid expansion of the Chilean wine export market. In 1998, the Research and Extension Center for Irrigation and Agroclimatology (CITRA) established the Talca irrigation management system (TIMAS) for vineyards located in the VI and VII regions of Chile. TIMAS uses weather data in combination with soil water content measurements to provide farmers with information required to manage the irrigation scheduling of commercial vineyards under drip irrigation. The results indicate that TIMAS determined an increase in the overall water use efficiency ranging from 5.3 to 6.2 ML ha-1 and a reduction in yield from 23 t ha-1 to 14 t ha-1 during the four year period. The decrease in yield was compensated by a higher concentration of polyphenols and anthocyanins in the must, which led to a higher price of the red wine. | |
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