Growth and enzyme activities of fungi and bacteria in soil salinized with sodium chloride

Omar, S. A.; Abdel‐Sater, M. A.; Khallil, A.M.; Abd‐Alla, Mohamed Hemida

doi:10.1007/bf02814524

Cited by 56 publications

(26 citation statements)

References 18 publications

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“…Therefore, we have only determined neutral and alkaline phosphatase activities since soil pH was 7.3. Catalase (Frankenberger and Bingham 1982), alkaline phosphatase (Garcia and Hernandez 1996), invertase, and urease (Omar et al 1994) activities were inhibited by increasing soil salinity. Similarly, we have observed that soil enzyme activities of control soil decreased proportionately by increasing salinity.…”

Section: Effect Of Inoculation On Plant Growth Under Salt Stressmentioning

confidence: 96%

“…Similarly, we have observed that soil enzyme activities of control soil decreased proportionately by increasing salinity. The reduced enzyme activities may depend on the decrease in enzyme synthesis due to the decrease in abundance and activity of soil microorganisms and/or to the "salting-out" effects on enzyme proteins (Omar et al 1994). Microbial inoculation promoted neutral phosphatase, alkaline phosphatase, urease, and catalase activities in both bulk and rhizosphere soils (Figs.…”

Section: Effect Of Inoculation On Plant Growth Under Salt Stressmentioning

confidence: 99%

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Interactions between arbuscular mycorrhizal fungi and phosphate-solubilizing fungus (Mortierella sp.) and their effects on Kostelelzkya virginica growth and enzyme activities of rhizosphere and bulk soils at different salinities

et al. 2011

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Section: Effect Of Inoculation On Plant Growth Under Salt Stressmentioning

confidence: 96%

Section: Effect Of Inoculation On Plant Growth Under Salt Stressmentioning

confidence: 99%

Interactions between arbuscular mycorrhizal fungi and phosphate-solubilizing fungus (Mortierella sp.) and their effects on Kostelelzkya virginica growth and enzyme activities of rhizosphere and bulk soils at different salinities

et al. 2011

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“…Effects on microbial communities are mainly related with the alteration of the soil structure and with the decrease of osmotic potential (Chowdhury et al, 2011;Sarig et al, 1993;Torsvik and Ovreas, 2002;Wong et al, 2008). Increase in soil salinity has been shown to reduce fungal and bac-terial counts (Omar et al, 1994;Pankhurst et al, 2001), as well as, to re-duce microbial diversity and microbial biomass (Ke et al, 2013;Tripathi et al, 2006). Rietz and Haynes (2003) related salinity and sodicity with increased levels of microbial stress and a reduction on the metabolical efficiency of the microbial community.…”

Section: Salinitymentioning

confidence: 99%

Wastewater reuse in irrigation: A microbiological perspective on implications in soil fertility and human and environmental health

Becerra-Castro

Lopes

Vaz‐Moreira

et al. 2015

Environment International

427

211

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The reuse of treated wastewater, in particular for irrigation, is an increasingly common practice, encouraged by governments and official entities worldwide. Irrigation with wastewater may have implications at two different levels: alter the physicochemical and microbiological properties of the soil and/or introduce and contribute to the accumulation of chemical and biological contaminants in soil. The first may affect soil productivity and fertility; the second may pose serious risks to the human and environmental health. The sustainable wastewater reuse in agriculture should prevent both types of effects, requiring a holistic and integrated risk assessment. In this article we critically review possible effects of irrigation with treated wastewater, with special emphasis on soil microbiota. The maintenance of a rich and diversified autochthonous soil microbiota and the use of treated wastewater with minimal levels of potential soil contaminants are proposed as sine qua non conditions to achieve a sustainable wastewater reuse for irrigation.

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“…For the alluvial waters of the oasis, it ranges from 40 to 60% and classifies waters as permissible for irrigation purposes. The class indicates that they can still negatively affect the structure and permeability of the soil [31]. This situation requires using appropriate agrotechnical techniques.…”

Section: Discussionmentioning

confidence: 99%

Potential Use of Alluvial Groundwater for Irrigation in Arid Zones - Mhamid Oasis (S Morocco)

Dłużewski

Kozłowski

Szczucińska

2017

Ecological Chemistry and Engineering S

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Abstract:In arid zones, the availability of fresh water is usually very limited because of high salinity, which greatly limits their use for irrigation purposes. High mineralization of water used for irrigation leads to increased soil salinity. The aim of the study was to examine the potential use of alluvial groundwater for irrigation in arid zones. The works were conducted in the Middle Draa Valley in southern Morocco (the Mhamid Oasis) in October 2015. Water samples of alluvial groundwater were collected for laboratory analysis from 42 wells located in the oasis. In order to determine the possibility to use the water for irrigation purposes, the Sodium Adsorption Ratio (SAR), sodium percentage (%Na), permeability index (PI), Kelly's ratio (KR), magnesium hazards (MH) and electrical conductivity (EC) were assessed. EC values, exceeding 3000 µS·cm -1 in all the samples, classify the water as unsuitable for irrigation. MH and the KR indexes show that 30% of water samples represent levels making them unsuitable for irrigation. SAR confirms the very high degree of susceptibility of the analyzed waters to salinity hazard. The PI index of these waters is moderate, however in terms of sodium content they can be deemed suitable for irrigation purposes. It has been found that even within a small area of the oasis, a very large differentiation in the alluvial groundwater suitability for irrigation purposes occurs.

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Growth and enzyme activities of fungi and bacteria in soil salinized with sodium chloride

Cited by 56 publications

References 18 publications

Interactions between arbuscular mycorrhizal fungi and phosphate-solubilizing fungus (Mortierella sp.) and their effects on Kostelelzkya virginica growth and enzyme activities of rhizosphere and bulk soils at different salinities

Interactions between arbuscular mycorrhizal fungi and phosphate-solubilizing fungus (Mortierella sp.) and their effects on Kostelelzkya virginica growth and enzyme activities of rhizosphere and bulk soils at different salinities

Wastewater reuse in irrigation: A microbiological perspective on implications in soil fertility and human and environmental health

Potential Use of Alluvial Groundwater for Irrigation in Arid Zones - Mhamid Oasis (S Morocco)

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