Variabilite des Parametres Morphologiques chez l’Olivier et Relations Correlatives = Variability of Morphological Parameters among the Olive Tree and Relations Correlatives

Masmoudi-Charfi, C.; Msallem, M.; Abdallah, Skander Ben

doi:10.12816/0045853

Cited by 1 publication

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“…Soil water retention and soil hydraulic properties are two well-established parameters [26,27] that could be used to evaluate water retention in Jessour soils. Moreover, water consumption by olive trees is well documented [28], in particular in Maghreb regions [29]. The soil retention dynamics of Jessour, which allow the cultivation of olive trees, thus needs to be analyzed in parallel with the vegetative growth cycle and water needs of the olive tree.…”

Section: Introductionmentioning

confidence: 99%

Benefits of Water-Harvesting Systems (Jessour) on Soil Water Retention in Southeast Tunisia

Calianno

Fallot

Fraj

et al. 2020

Water

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In this paper, we quantify the water balance of Jessour at the scale of agricultural plots. Jessour (plural of Jesr) are ancestral hydro-agricultural systems in the Dahar plateau (southeastern Tunisia). They consist of small dams built across wadis and gullies, which retain rainwater and sediments, hence enabling cropping. Despite arid climate conditions, Jessour allow the culture of the olive tree beyond its ecological limits. Weather monitoring stations were set up and soil moisture sensors installed down to a depth of 1.25 m in the soil in two neighboring gullies in the village of Zammour: one with a Jesr and one without. Laser granulometry and organic matter analyses were carried out on samples collected near the soil moisture sensors. Measurements were recorded from 28 September 2017 to 21 September 2018. From 10 to 12 November 2017, the region received 123.3 mm rainfall. The Jesr retained the equivalent of 410.3 mm of soil moisture to a depth of 1.25 m whereas the value in the gully was 224.6 mm. Throughout the summer of 2018, the soil available water capacity (AWC) remained above 55 mm in the Jesr, while it dropped to zero in the gully. Jessour are thus very suitable hydro-agricultural systems to face the climate changes concerning this fragile region, located in the transition zone between the semi-arid to arid Mediterranean region and the Sahara.

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