Effects of combination of tillage with olive mill wastewater on soil organic carbon groups in arid soils

Gargouri, Kamel; Mbadra, Chaker; Mahmoud, Imen Ben; Chaker, Rayda; Maktouf, Sameh; Abbas, Ouissam; Baeten, Vincent; Rigane, Hafedh

doi:10.1007/s12517-020-5235-x

Cited by 9 publications

(1 citation statement)

References 54 publications

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“…However, water scarcity is also considered as another crucial factor that causes soil degradation, and a decrease in SOC content in semi-arid and arid regions [24]. On average, every year, arid areas have long drought periods (4 to 6 months), so the generation of natural biomass as C source is limited by climatic conditions, but this problem is maximized due to management practices in these arid regions, since the highly intensified tillage causes a loss of spontaneous vegetation cover [25]. The main consequence of these processes acting synergistically is that these soils are highly vulnerable to degradation processes, due mainly to SOM depletion and wind erosion, which cause desertification, which is intensified by the current global warming crisis [26,27].…”

Section: Introductionmentioning

confidence: 99%

Short and Long-Term Effect of Land Use and Management on Soil Organic Carbon Stock in Semi-Desert Areas of North Africa-Tunisia

et al. 2021

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Soil organic carbon (SOC) plays an important role in the global C cycle, as well as in the maintenance and improvement of the soil quality. Over time, special attention has been paid to it in the study of the SOC reserves worldwide; however, reduced attention has been given to assessing the spatial patterns of SOC stock (SOCS) in semi-desert ecosystems. In this line, there are no conclusive studies in drylands of Africa affected by aeolian processes (semi-desert conditions) mainly due to the complexity of sample collection, and this is especially significant in some soil types such as Arenosols (AR) and Calcisols (CL). This study evaluated the spatial variability of SOC and SOCS in AR and CL with woody crops in relation to land use and management (old plantations > 100 years: centenary olive grove; new plantations < 12 years: young olive grove, almond, and pistachio) in semi-desert conditions. For this purpose, 16 soil profiles (for 0–40 and 40–100 cm depth) were selected and studied in an experimental area of Menzel Chaker-Sfax in southeastern Tunisia (North Africa). The main results indicated that the SOCS on average was higher in Old Cultivated AR (OC-AR) with 41.16 Mg ha−1 compared to Newly Cultivated AR (NC-AR) with 25.13 Mg ha−1. However, the SOCS decreased after a long period of cultivation in CL from 43.00 Mg ha−1 (Newly Cultivated CL: NC-CL) to 32.19 Mg ha−1 (Old Cultivated CL: OC-CL). This indicates that in the long term, CL has more capacity to store SOC than AR, and that in the short term, AR is more sensitive to land management than CL.

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