Microbial response to salinity stress in a tropical sandy soil amended with native shrub residues or inorganic fertilizer

Sall, Saïdou Nourou; Ndour, Ndèye Yacine Badiane; Diedhiou-Sall, Sire; Dick, Richard P.; Chotte, Jean Luc

doi:10.1016/j.jenvman.2015.06.017

Cited by 23 publications

(14 citation statements)

References 38 publications

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“…Adding chicken manure to soil at only 10 t ha −1 resulted in higher salinity (566 μS cm −1 ) than control (447 μS cm −1 ) after 60 d of incubation (Roy & Kashem, 2014). It has been reported that high concentrations of salts decrease nitrification potential, causing stunted plant growth and low productivity of croplands (Sall, Ndour, Diédhiou‐Sall, Dick, & Chotte, 2015). This was highlighted by significant negative correlations between EC and NO 3 − in both soils ( r = −.98), as shown in Supplemental Tables S1 and S2.…”

Section: Resultsmentioning

confidence: 99%

Carbon mineralization, biological indicators, and phytotoxicity to assess the impact of urban sewage sludge on two light‐textured soils in a microcosm

et al. 2020

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The agricultural reuse of urban sewage sludge (USS) modifies soil properties depending on sludge quality, management, and pedo‐environmental conditions. The aim of this microcosm study was to assess C mineralization and subsequent changes in soil properties after USS addition to two typical Mediterranean soils: sandy (Soil S) and sandy loam (Soil A) at equivalent field rates of 40 t ha−1 (USS‐40) and 120 t ha−1 (USS‐120). Outcomes proved the biodegradability of USS through immediate CO2 release inside incubation bottles in a dose‐dependent manner. Accordingly, the highest rates of daily C emission were recorded with USS‐120 (3.7 and 3.9 mg kg−1 d−1 for Soils S and A, respectively) after 84 d of incubation at 25 °C. The addition of USS also improved soil fertility by enhancing soil macronutrients, microbial proliferation, and protease activity. Protease showed significant correlation with N, total organic C, and heterotrophic bacteria, reflecting the biostimulation and bioaugmentation effects of sludge. Soil indices like C/N/P stoichiometry and metabolic quotient (qCO2) varied mostly with mineralization rates of C and P in both soils. Despite a significant increase of soil salinity and total heavy metal content (lead, nickel, zinc, and copper) with USS dose, wheat germination was not affected by these changes. Both experimental soils showed intrinsic (Soil A) and incubation‐induced (Soil S) phytotoxicities that were alleviated by USS addition. This was likely due to the enhancement of biodegradation and/or retention of phytotoxicants originating from previous land uses. Urban sewage sludge amendments could have applications in soil remediation by reducing the negative effects of allelopathic and/or anthropogenic phytoinhibitors.

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Section: Resultsmentioning

confidence: 99%

Carbon mineralization, biological indicators, and phytotoxicity to assess the impact of urban sewage sludge on two light‐textured soils in a microcosm

et al. 2020

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“…chlorophyll content in passion fruit leaves, probably not only by nutrient supply provided by the presence of organic matter, but also the improvement of microbiological content and increase in population and diversity of soil fauna in the substrate (Sall et al, 2015). For the IQD, CCP + S substrates and CCO + S, provided better quality of passion fruit seedlings (Table 5).…”

Section: Resultsmentioning

confidence: 99%

“…This decomposition occurs by the action of microorganisms and the soil fauna, the compound being a source of slow release of macro and organic micronutrients, serving as a soil builder and allows the increase in organic matter, favoring increased retention capacity water, increasing the CTC, nutrient retention in the soil and reducing the acidity of the soil over time, to form organic complex and retain bases providing best condition for resistance to pests and diseases (Penteado, 2007). The organic inputs provide improved microbiological substrate and increasing population and diversity of soil fauna of the soil (Sall et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Production of yellow passion fruit seedlings on substrates with different organic compounds

Cavalcante¹,

AraÃojo²,

Cavalcante³

et al. 2016

Afr. J. Agric. Res.

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The production of passion fruit seedlings constitutes one of the important stages of the production system and the importance of substrate for the seedlings growth and plant performance in the field. Therefore, the objective of this study was to evaluate the effects of different composting organic wastes in the substrate composition for production of yellow passion fruit seedlings. The experiment had been conducted in the Centre of Human, Social and Agricultural Sciences at The Federal University of Paraíba. The experimental design was randomized block design, with six treatments, goat composite + soil (CCP+S), poultry composite + soil (AC+S), bovine composite + soil (CB+S), rabbit composite + soil (CCO+S), earthworm humus + soil (MH + S), and soil (S) and S in the ratio of 2:1 (v/v) and five repetitions. Emergency speed index, emergency percentage, stem diameter, seedling height, leaf number, root length, fresh root mass, shoots fresh mass, total of fresh mass, dry mass of root, dry mass of branches, total dry mass, chlorophyll a, b and total, and Dickson quality index were assessed. The compounds in the constitution of substrates exerted significant effect on the characteristics evaluated in the passion fruit, which may be related to the availability of nutrients to the substrate. The substrates containing CCP+S and CCO+S provided better growth, chlorophyll contents and quality of "Serra" yellow passion fruit seedlings.

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“…This is a result of the inhibition of aggression by organic compost salts to seedlings. This increase indicated that the organic input mitigates the adverse effects of salinity through benefits to physical properties by increasing the pore space (Mellek et al, 2010), to chemical properties by improving fertility (Bendouali et al, 2013), and to biological properties by increasing the population and the microbial diversity of soil (Sall et al, 2015;Ndubuisinnaji et al, 2011) thus, mitigating the degenerative actions of salts on plants. In this sense, organic inputs, according to Brahmaprakash and Sahu (2012), mitigate the negative effects of salinity on plants by releasing humic substances in the medium, which reduce the osmotic pressure inside roots, keeping the superiority of the total potential energy of soil water, and providing the uptake of nutrients by plants.…”

Section: Resultsmentioning

confidence: 99%

“…Organic inputs from plants and animals increase water retention capacity, soil aggregation and reduce soil density (Mgbeze and Abu, 2010). They also act in the soil's chemical improvement, by providing an increase in nutrient concentrations (Nóbrega et al, 2008), and in soil's microbiological improvement by increasing the population and the fauna diversity of saline soils and saline-sodic soils (Ndubuisinnaji et al, 2011;Sall et al, 2015).…”

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confidence: 99%

Saline water and organic matter in the development and quality of Licania rigida Benth. seedlings

Cavalcante¹,

Neto²,

Cavalcante³

et al. 2016

Afr. J. Agric. Res.

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Licania rigida Benth. (oiticica) is a native species from the Northeastern Brazil. In this sense, the aim of this study is to evaluate the effects of irrigation with saline water and organic matter on the growth and quality of oiticica seedlings. The experiments were laid out in randomized complete block using a 5 × 2 factorial design related to electrical conductivity of irrigation water at 0.5, 1.5, 3.0, 4.5 and 6.0 dS m -1 in a substrate with and without organic castor bean compost (Ricinus communis) and soil in a volume ratio of 0:1 and 1:1 v/v. Growth in height, stem diameter, leaf number, leaf area, chlorophyll a and b and total chlorophyll indices, shoot and root dry matter and Dickson Quality Index were evaluated. The increase in water salinity inhibited biometric growth, seedlings production of root and shoot biomass, chlorophyll content and Dickson Quality Index. Increase in water salinity, except for root biomass, inhibited biometric growth, shoot biomass accumulation, chlorophyll a, b and total, chlorophyll indexes and quality index of oiticica seedlings. In the results, although the Dickson Quality Index did not decrease with increasing water salinity and did not vary among treatments with and without organic compost, the transplanting of seedlings in the field was found to be suitable.

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Microbial response to salinity stress in a tropical sandy soil amended with native shrub residues or inorganic fertilizer

Cited by 23 publications

References 38 publications

Carbon mineralization, biological indicators, and phytotoxicity to assess the impact of urban sewage sludge on two light‐textured soils in a microcosm

Carbon mineralization, biological indicators, and phytotoxicity to assess the impact of urban sewage sludge on two light‐textured soils in a microcosm

Production of yellow passion fruit seedlings on substrates with different organic compounds

Saline water and organic matter in the development and quality of Licania rigida Benth. seedlings

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