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Assessment of Myrtus communis L. water status and water requirements

Sirca, Costantino Battista and Cocco, Tore and Marras, Serena and Spano, Donatella Emma Ignazia and Duce, Pierpaolo and Arca, Angelo and Snyder, Richard L. (2008) Assessment of Myrtus communis L. water status and water requirements. In: 5th International Symposium on Irrigation of Horticultural Crops, August 28-September 2, 2006, Mildura, Australia. Leuven, International Society for Horticultural Science. p. 601-607. (Acta Horticulturae, 792). ISBN 978-90-66054-87-5. Conference or Workshop Item.

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Abstract

Myrtle (Myrtus communis L.) is a naturally occurring, highly drought-tolerant, evergreen shrub or small tree that is widely distributed within the Mediterranean basin. It is classified as an aromatic species because of the essential oil compounds of the leaves and fruits. Myrtle is commercially used for liquor production and perfume, and the harvest comes mainly from wild plants. Currently, there is insufficient wild-plant production to meet the demand for myrtle leaves and berries which has led to increasing interest to cultivate the plants to increase production. To assess the water requirements and water use efficiency, research was conducted on the ecophysiological responses of commercially grown myrtle plants to different soil-moisture conditions using stem water potential measurements. Data were collected in an eight-year-old myrtle orchard located near Alghero (Italy) during two consecutive summers. Plants showed higher values of net photosynthesis and water use efficiency under moderate stress than in well watered conditions. Severe stress symptoms appeared only with low soil moisture content. These results showed that optimal myrtle production will likely occur using regulated deficit irrigation. Crop evapotranspiration was determined using the surface renewal method, and the crop coefficient (Kc), relative to short-canopy standardized reference evapotranspiration (ETo) ranged between 0.7 and 1.2.

Item Type:Conference or Workshop Item (Paper)
ID Code:2608
Status:Published
Uncontrolled Keywords:Stem water potential, photosynthesis, evapotranspiration, crop coefficient, irrigation
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/03 Arboricoltura generale e coltivazioni arboree
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di biometeorologia, Sassari
001 Università di Sassari > 01 Dipartimenti > Economia e sistemi arborei
Publisher:International Society for Horticultural Science
ISBN:978-90-66054-87-5
Deposited On:18 Aug 2009 10:08

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