Water relations of lysimeter-grown peach trees are sensitive to deficit irrigation
Authors AffiliationsM. 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; D. Goldhamer is LIC Extension Water Management Specialist, located at Kearney Agricultural Center, Parlier; E. Fereres is Director, IAS-CSIC, and Professor and University of Cordoba, Cordoba, Spain; M. Cohen is Research Scientist, IRTA, Cabrils, Spain; Johnson is Extension Pomology Specialist, Kearney Agricultural Center, Parlier.
Hilgardia 53(4):17-20. DOI:10.3733/ca.v053n04p17. July 1999.
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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