Water Stress and Physiological Parameters in Young Table-Olive Trees

Deidda, P.; Dettori, Sandro; Filigheddu, Maria Rosaria; Canu, Annalisa

doi:10.17660/actahortic.1990.286.51

Cited by 6 publications

(5 citation statements)

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“…effective mechanism for avoiding water loss in water stress situations (Deidda et al, 1990;Fernández et al, 1997;Giménez et al, 1997;Giorio et al, 1999;Gucci et al, 2002;Moriana et al, 2002). Although the involvement of K in this mechanism has been documented for many years (Fischer, 1968;Fujimo, 1967), less is known about the stomatal behavior in cases of K defi ciency.…”

Section: Resultsmentioning

confidence: 99%

Potassium Starvation Increases Stomatal Conductance in Olive Trees

Arquero¹,

Barranco²,

Benlloch³

2006

HortSci

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The effects of potassium (K) status and water availability in the growth medium on growth, water content, water-use efficiency and stomatal conductance was studied in mist-rooted `Chemlali de Sfax' olive (Olea europaea L.) cuttings grown in a perlite substrate. Potassium starvation produced dehydration of all parts of the plant, reduced shoot growth and water-use efficiency. By contrast, K starvation enhanced stomatal conductance in well-irrigated plants and, even more, in water-stressed plants. These results suggest that moderate K deficiency in olives may impair the plant's ability to regulate stomatal closure; this may account for the dehydration observed in K-starved plants, particularly in situations of water stress. This result is of great importance for agricultural practices of this crop, because K status, which may not be considered deficient, can cause disorders in olive trees.

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Section: Resultsmentioning

confidence: 99%

Potassium Starvation Increases Stomatal Conductance in Olive Trees

Arquero¹,

Barranco²,

Benlloch³

2006

HortSci

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“…These results were in agreement with those reported by Emad (2005) and Ahmed (2013). Also, Deidda et al (1990) and Inglese et al (1996) mentioned that the response to prolonged water deficits has been investigated in terms of adaptive behaviour i.e. stomata functioning.…”

Section: Concerning the Interaction Between Irrigation Methods And Olmentioning

confidence: 99%

Effect of Different Water Quantities on Growth and Fruit Quality of Olive Trees Under New Reclaimed Lands Conditions

El-Taweel¹,

Farag²

2016

Journal of Plant Production

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A field experiment was conducted during two successive seasons (2014 and 2015) in a private orchard farm, located at the 6 4 km on the Cairo-Alexandria Desert Road, to study the effect of different irrigation levels, irrigation methods and olive cultivars on plant growth and yield of olive trees(Olea europara, L.). Treatments were: a-three irrigation levels: 4384 m 3 /feddan(100%), 3740 m 3 /feddans (85%) and 3089 m 3 /feddan (70%); b-two drip irrigation methods: on-line surface irrigation and in-line sub surface irrigation and c-two olive cultivars, Picual and Manzanillo. The experiment was designed in a split-split plot with three replicates. Estimated irrigation water was calculated, using FAO method, in order to compare between applied and estimated irrigation regime. Data revealed that using 3740m 3 /fed irrigation level gave the highest growth and yield compared with other treatments. The Estimated irrigation water was close to applied treatment 3740 m 3 /fed. In-line (surface irrigation) method recorded the highest yield and oil during the two successive seasons. The oil content in fruit increased with water decrease. The Picual cultivar showed the highest oil content while, Manzanillo cultivar gave the highest yield. The interaction between the three tested factors show that the 3740m 3 /fed treatment with the In-line surface irrigation combined with Manzanillo cultivar was the best combined treatment. The highest WUE was found in 3089 m 3 / fed. with subsurface irrigation combined with Manzanillo cultivar.

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“…Some works [7,33,39], reported that young trees are characterized by rapid growth and important relative rates, allowing them to reach their full size at ten years of age. It was indicated also, that their growth dynamic is influenced by the environmental factors, like water and temperature, but it was not quantitatively analyzed.…”

Section: Introductionmentioning

confidence: 99%

Growth of Young Olive Trees: Water Requirements in Relation to Canopy and Root Development

Masmoudi-Charfi¹

2013

AJPS

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The study was carried out in north Tunisia (36.5˚N, 10.2˚E) in order to get a comprehensive view of the growth dynamic of young olive orchards (Olea europaea L.,). The experiment involved irrigated trees of cultivars Chétoui, Manzanille, Meski and Picholine, planted at 6 × 6 m 2 spacing. Tree height, shoot length and canopy, fruit and trunk diameters were monitored regularly after plantation on 12 trees per variety. Root development was analyzed on Chétoui trees, only. Growth patterns were established annually for each variety before proposing an average model for each growth parameter. Results showed that tree height, shoot length and trunk diameter grew following an S-shaped curve with maximum annual increases occurring on the 4 th year for tree height and a year later for canopy. The minimum gain coincided with the highest fruit load year, indicating that competition for assimilates concerns also young trees. Average growth patterns for tree height and shoots showed sustained rates all over the growing season with seven distinct periods of growth. Rapid growth occurred in April, July, and September, with similar growth trends observed for productive and less productive cultivars. However, the studied varieties behaved differently. Picholine cv., provided the most important increases and was the best water user. Results also showed that most roots were confined to the top soil layers and developed nearby the trunks. High root densities and important water depletion were observed in this area and thus, water and fertilizers should be supplied for young trees at these depths and distances from trunks. Root and canopy development were highly correlated (r = 0.94) and interfered with fruit growth. When trees set their first productions, the root-canopy ratio approximated the unit. An optimum ratio between root length and leaf area was found (2.3 km·m −2 ) for the 6-year-old tree, indicating good equilibrium between the above and the underground parts. On the basis of these results, a mathematical model was developed allowing a precise estimation of water requirements of olive trees during a period, where ground cover rarely exceeds 30%. We can conclude that all these models, graphic and mathematic give precise information on the occurrence of the various phenophases of young olive trees and may be used for a quantitative appraisal of the performance of olive varieties under a given environment. However, some aspects would be probed deeper and particularly the influence of climatic data on growth dynamic.

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Water Stress and Physiological Parameters in Young Table-Olive Trees

Cited by 6 publications

References 0 publications

Potassium Starvation Increases Stomatal Conductance in Olive Trees

Potassium Starvation Increases Stomatal Conductance in Olive Trees

Effect of Different Water Quantities on Growth and Fruit Quality of Olive Trees Under New Reclaimed Lands Conditions

Growth of Young Olive Trees: Water Requirements in Relation to Canopy and Root Development

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