NDLI: Influence of different irrigation regimes on crop yield and water use efficiency of olive

Content Provider	Springer Nature Link
Author	Fernandes Silva, Anabela A. Ferreira, Timóteo C. Correia, Carlos M. Malheiro, Aurelia C. Villalobos, Francisco J.
Copyright Year	2010
Abstract	A field experiment with 2,200 m$^{2}$ was performed from 2004 to 2006, in northeast Portugal, to evaluate the response of a commercial olive (Olea europaea L. cv. “Cobrançosa”) orchard to different irrigation regimes on growth and yield. The trees were subjected to three irrigation treatments: rainfed conditions (T0), irrigation with 30% (T1) and 100% (T2) of crop evapotranspiration (ET$_{c}$). Seasonal dynamics of stomatal conductance (g$_{s}$) and shoot water potential varied among treatments, and responded to soil water content and atmospheric evaporative demand. Irrigation increases g$_{s}$, in association with increases in water status. Annual ET$_{c}$ varied from around 300 mm in T0 to 700 mm in T2. Irrigation increased fruit yield, due to the greater number of fruits per tree and higher mass per fruit. Differences in oil yield among treatments were closely related to fruit yield. Moreover, oil accumulation in the fruit was delayed in rainfed conditions. Variations in fruit and oil yield was strongly influenced by variations in ET$_{c}$. On average, the amount of oil produced per unit intercepted PAR increased with irrigation and for both irrigated treatments was more than double those of T0. A strategy of continuous deficit irrigation with only 30% of maximum ET$_{c}$ may have a very beneficial effect, since it allows increasing oil yield to more than double that of rainfed conditions.
Starting Page	35
Ending Page	47
Page Count	13
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	333
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-02-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Olive Irrigation Growth Evapotranspiration Yield Water use eficiency Ecology Plant Physiology Soil Science & Conservation Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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