Changes in soil fabric of Torripsamments under irrigated date palms, Saudi Arabia

Khalifa, E. M.; Reda, M.; Al-Awajy, M.H.

doi:10.1016/0016-7061(89)90038-4

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…Whereas few studies have been conducted on past agriculture, many have been performed on present‐day soils in the Peninsula (Saudi, Oman, Yemen and Emirates) with the aim to improve the yields and/or stem the current degradation of agricultural land. Several parameters are traditionally explored, such as texture, structure, stability, density, pH, salinity, sodicity, nutrient availability, microbial activities, and so forth (Heakal & Al‐Awajy, 1989; Hussain, 1982; Khalifa et al, 1989; Luedeling et al, 2005; Meddich et al, 2015; Meharg et al, 2006; Stevens, 1973; Wichern et al, 2004, 2004). These studies allow one to locally characterise soils, but they do not properly estimate the short‐ and long‐term impact of external (climate, hydrology and sedimentology) and internal constraints (human practices) on them: “there is no single universal response of soils to agriculture” (Sandor & Homburg, 2017).…”

Section: Introductionmentioning

confidence: 99%

An oasis soil reference collection for the identification and study of ancient cultivated soils in arid environments (Oasis of Masafi, United Arab Emirates)

et al. 2021

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Oasis soils result from the combined action of natural and anthropic processes, and thus constitute valuable systems for the understanding of human–environment trajectories over the millennia. The present research aims to develop the study of ancient oasis soils by identifying proxies to detect past agricultural practices. Ten reference pits were dug in Masafi, in both cultivated plots (irrigated plots with palm trees/fruit trees/cereals; manure/ashes/carbonates) and abandoned ones. Bulk sediment samples were analysed for geochemistry/pedo‐sedimentary studies: inductively coupled plasma‐optical emission spectrometry, loss on ignition, pH, electrical conductivity, grain size and magnetic susceptibility. This multiproxy approach enabled the creation of a soil typology of oasis agricultural modes. Irrigation and liming lead to salinisation, particularly in a B‐horizon. Manure creates a hortic horizon, enriched in P and Zn. Ashes can be detected with a simultaneous increase of magnetic and salinity values. Soils in plots with fruit trees/cereals are not distinguishable from those with palm monoculture. Weathering was identified on the basis of the enrichment in Al, Ti, K Na, Ni, Cr and Fe, whereas proxies of ancient practices seem to be preserved after 15 years of abandonment. As leaching processes appear to be limited to the first 50 cm, the durability of soil signatures depends on how they were buried.

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Section: Introductionmentioning

confidence: 99%

An oasis soil reference collection for the identification and study of ancient cultivated soils in arid environments (Oasis of Masafi, United Arab Emirates)

et al. 2021

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“…The samples of soil were obtained from four 160-cm deep sandy profiles (Typic Torripsamments;Soil Survey Staff, 1975) in date-palm orchards under flood irrigation for 10, 50, 110 and 230 years and from an additional barren profile in the nearby desert. Laboratory and field analyses, morphological and micromorphological descriptions, distribution and mass of plant roots for each soil profile and chemical composition of the irrigation water have been reported by Heakal & Al-Awajy (1989) and Khalifa et al (1989). In addition, the soils were auger-sampled two years after sampling the profile for the aforementioned papers allowing comparison of the old and new sets of samples.…”

Section: Soilsmentioning

confidence: 99%

Phosphorus forms in a sandy soil (Torripsamment) under palm orchards of different age in Saudi Arabia

Heakal

Al-Awajy

Al-Sewailem

et al. 1995

European J Soil Science

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Flood irrigated date-palm orchards annually manured for 10 ( = Ulo), 50 ( = Use), 110 ( = U 1 lo) and 230 (U230) years together with a barren site in a nearby desert (= Uo), all on sandy soils, were analysed for total P (TP), organic P (OP), inorganic P extracted by 0.5 M H2S04 (Ca-P), inorganic P not extracted by 0.5 M H2SO4 (NP), total N (TN) and organic C (TC). Watering resulted in continuing CaC03 accumulation in the soils. TC and TN to 160 cm depth increased rapidly over the first 50 years (120 g C m-2 a-l and 9.7 g N m-' a-'), then the increases slowed. In contrast, TP continued to accumulate steadily (4.8 g P m-2 a-'). At Uo, TP to 160 cm depth was very small ( = 88 mg kg-') and dominated by Ca-P with OP as a minor component. At Ulo, OP and Ca-P were in equal proportions. The latter acquired increasing dominance with increasing period of treatment whereas OP reached a steady state. NP increased at a rate which decreased with time. It is likely that most of OP compounds have been leached down the profile where mineralization and subsequent immobilization, probably by Ca2+ ions from irrigation waters, have occurred.

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Long-term effects of irrigation and date-palm production on Torripsamments, Saudi Arabia

Heakal

Al-Awajy

1989

Geoderma

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Changes in soil fabric of Torripsamments under irrigated date palms, Saudi Arabia

Cited by 8 publications

References 7 publications

An oasis soil reference collection for the identification and study of ancient cultivated soils in arid environments (Oasis of Masafi, United Arab Emirates)

An oasis soil reference collection for the identification and study of ancient cultivated soils in arid environments (Oasis of Masafi, United Arab Emirates)

Phosphorus forms in a sandy soil (Torripsamment) under palm orchards of different age in Saudi Arabia

Long-term effects of irrigation and date-palm production on Torripsamments, Saudi Arabia

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