Regulated Deficit Irrigation in Olive Trees

Alegre, Simó; Girona, J.; Marsal, José Ignacio; Arbonés, A.; Mata, M.; Montagut, D.; Teixidó, F.; Motilva, María‐José; Romero, M.P.

doi:10.17660/actahortic.1999.474.77

Cited by 31 publications

(21 citation statements)

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“…A reduction of 60% was imposed (K r = 0.4) to account for the area shaded by the canopy, 17 and doses were modi®ed in situ based on plant water status. 15 Additionally, three RDI treatments were imposed which were irrigated like the control for the whole season, but applying only 75% (T-75), 50% (T-50) and 25% (T-25) of the dose applied to the control from the beginning of massive pit hardening (5 July for the 1996 season) to the third week of September (2 weeks before the beginning of ripening).…”

Section: Experimental Samplesmentioning

confidence: 99%

“…Preliminary studies have shown that regulated de®cit irrigation strategies applied to Arbequina olive trees negatively affected leaf water potential, stomatal conductance and fruit fresh weight. 15 Oil composition was also affected by irrigation: polyphenol content and oil stability increased with decreased water supply. However, the classical oil quality parameters (titratable acidity and peroxide value) were not affected.…”

Section: Introductionmentioning

confidence: 99%

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Influence of regulated deficit irrigation strategies applied to olive trees (Arbequina cultivar) on oil yield and oil composition during the fruit ripening period

Motilva

Tovar

Bolaño-Romero

et al. 2000

J. Sci. Food Agric.

153

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Section: Experimental Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of regulated deficit irrigation strategies applied to olive trees (Arbequina cultivar) on oil yield and oil composition during the fruit ripening period

Motilva

Tovar

Bolaño-Romero

et al. 2000

J. Sci. Food Agric.

153

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“…These changes in plant metabolism by mild water stress may increase the quality of the fruit and wine produced Anderson, 1988, 1989). The deliberate restriction of irrigation water may, therefore, be a legitimate management strategy to manipulate crop water use and this is embodied in the technique known as regulated deficit irrigation (RDI) (Boland et al, 1993;Alegre et al, 1999;Dry et al, 2001). However, accurate monitoring of both vine and soil moisture status is required, and RDI may also result in changes to specific characteristics such as the size of grape berries (McCarthy, 1997).…”

Section: Introductionmentioning

confidence: 99%

Control of stomatal aperture and carbon uptake by deficit irrigation in two grapevine cultivars

Souza

Marôco

Santos³

et al. 2005

Agriculture, Ecosystems & Environment

138

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Improvements in water use efficiency of crops are essential under the scenarios of water scarcity predicted by global change models for the Mediterranean region. In recent years, deficit irrigation, including partial root drying (PRD), has been proposed as an irrigation technique to improve water use efficiency and standardize grapevine yield and quality. The objective of this study was to evaluate the impact of deficit irrigation on photosynthetic responses of field grown grapevines of cv. Moscatel and Castelão. The treatments were: full irrigation (FI), corresponding to 100% ET c ; non-irrigated, but rain fed (NI) and partial root zone drying (PRD) and deficit irrigation (DI), both corresponding to an irrigation of 50% ET c . While in the DI treatment water was applied to both sides of the root system, in the PRD treatment, water was supplied to only one side of the root system, alternating sides periodically. In both cultivars, PRD and DI vines showed intermediate pre-dawn leaf water potential (c pd ) values (around À0.4 MPa) while FI vines, showed c pd around À0.2 MPa during the growing season. NI showed the lowest c pd , reaching À0.6 MPa in Moscatel and À0.8 MPa in Castelão, at the end of growing season. Water status of PRD vines remained closer to FI than DI, especially at midday. Photosynthetic rates and fluorescence parameters of the deficit irrigation treatments (PRD and DI) did not show significant differences from FI vines, for most of the season. In Moscatel, although PRD generally showed g s , relative stomatal limitation (RSL) and intrinsic water use efficiency (A/g s ) values closer to NI than DI, most of the differences between PRD and DI were not statistically significant. Our results showed a stability of the photosynthetic machinery in grapevines under low-to-moderate water availabilities, as demonstrated by the maintenance of the activity of three Calvin Cycle enzymes and of the V cmax values. However, a decline in J max was observed in NI vines, that can be a result either of a decrease in ATP production or, alternatively, of decreased mesophyll conductance to CO 2 diffusion. In general terms, stomatal limitation of photosynthesis is likely to be dominant in non-irrigated plants. Deficit irrigation had no negative impact on CO 2 assimilation, despite less water application than in full-irrigation. Differences among varieties may be related to differences in sensitivity of stomata, shoot growth and/or the interaction between rootstock and cultivar to soil water availability. #

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“…Vita et al [7] found that RDI at 50% ETc applied in the same period decreased 26% oil yield. However, other studies indicated not differences in oil yield when RDI was imposed [12,22]. Goldhamer et al [23] found that oil content was significantly higher for all RDI strategies applied in comparison to the control, and the most severely stressed had an increase in oil content about 30%.…”

Section: Oil Yield and Oil Contentmentioning

confidence: 95%

“…On the other hand, RDI reduced flowering next year [11] and accelerated ripening [12]. The response to RDI depends on the olive variety [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Regulated Deficit Irrigation on Productivity, Quality and Water Use in Olive cv “Manzanilla”

Grijalva-Contreras¹,

Macías-Duarte²,

Martínez-Díaz³

et al. 2013

AJPS

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The objective of this experiment was to determine the effect of different regulated deficit irrigation (RDI) strategies on productivity, oil quality and water-use efficiency on olive grown in the Sonoran Desert. The experiments were carried out in 2009 and 2010, and in a ten years old traditional (10 × 5 m) "Manzanilla" olive orchard. The control treatment was irrigated at 100% ETc during the whole season while RDI treatments were applied at 75% ETc or 50% ETc. The two RDI were applied during two phenological stages: at postharvest to evaluate the effect on table olive or from pit hardening to harvest to evaluate the effect on oil olive. Our results indicated that RDI applying 50% ETc during postharvest period reduced significantly fruit set and table olive yield, while applied during pit hardening to harvest period, it decreased oil yield but increased oil content. The RDI applying an ETc of 75% during the postharvest period gave similar table olive yield to the control, and applied form of pit hardening to harvest also gave similar oil yield to the control. The RDI using an ETc of 75% resulted in the highest water-use efficiency for oil or table olive production.

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Regulated Deficit Irrigation in Olive Trees

Cited by 31 publications

References 0 publications

Influence of regulated deficit irrigation strategies applied to olive trees (Arbequina cultivar) on oil yield and oil composition during the fruit ripening period

Influence of regulated deficit irrigation strategies applied to olive trees (Arbequina cultivar) on oil yield and oil composition during the fruit ripening period

Control of stomatal aperture and carbon uptake by deficit irrigation in two grapevine cultivars

Effect of Regulated Deficit Irrigation on Productivity, Quality and Water Use in Olive cv “Manzanilla”

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