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Water relations of lysimeter-grown peach trees are sensitive to deficit irrigation
Authors
Merce MataJoan Girona
Elias Fereres
Moshe Cohen
David Goldhamer
Scott Johnson
Authors Affiliations
M. Mata is Research Associate and Research Leader, respectively, Institut de Recerca i Tecnologia Agroalimentáries (IRTA), Lleida, Spain; J. Girona is Research Associate and Research Leader, respectively, Institut de Recerca i Tecnologia Agroalimentáries (IRTA), Lleida, Spain; E. Fereres is Director, IAS-CSIC, and Professor and University of Cordoba, Cordoba, Spain; M. Cohen is Research Scientist, IRTA, Cabrils, Spain; D. Goldhamer is LIC Extension Water Management Specialist, located at Kearney Agricultural Center, Parlier; Johnson is Extension Pomology Specialist, Kearney Agricultural Center, Parlier.Publication Information
Hilgardia 53(4):17-20. DOI:10.3733/ca.v053n04p17. July 1999.
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Abstract
To compare peach tree water use with soil and plant water status measurements, two trees in a large weighing lysimeter were deficit irrigated with insufficient amounts of water for 3 weeks. Transpiration decreased soon after the deficit irrigation began and evaporation from the soil became relatively more important. Due to shallow, sparse rooting, high-frequency drip irrigation and high evaporative demand, allowable depletion in the wetted soil zone of the lysimeter was only 15% to 20% of available soil water. This indicates the small margin for error in managing irrigation of trees in this situation.
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