@article{fdi:010065285, title = {{M}icrobial response to salinity stress in a tropical sandy soil amended with native shrub residues or inorganic fertilizer}, author = {{S}all, {S}. {N}. and {N}dour, {N}. {Y}. {B}. and {D}iedhiou-{S}all, {S}. and {D}ick, {R}. and {C}hotte, {J}ean-{L}uc}, editor = {}, language = {{ENG}}, abstract = {{S}oil degradation and salinization caused by inappropriate cultivation practices and high levels of saltwater intrusion are having an adverse effect on agriculture in {C}entral {S}enegal. {T}he residues of {P}iliostigma reticulatum, a local shrub that coexists with crops, were recently shown to increase particulate organic matter and improve soil quality and may be a promising means of alleviating the effects of salinization. {T}his study compared the effects of inorganic fertilizer and {P}. reticulatum residues on microbial properties and the ability of soil to withstand salinity stress. {W}e hypothesized that soils amended with {P}. reticulatum would be less affected by salinity stress than soils amended with inorganic fertilizer and control soil. {S}alinity stress was applied to soil from a field site that had been cultivated for 5 years under a millet/peanut crop rotation when microbial biomass, phospholipid fatty acid ({PLFA}) community profile, catabolic diversity, microbial activities were determined. {M}icrobial biomass, nitrification potential and dehydrogenase activity were higher by 20%, 56% and 69% respectively in soil with the organic amendment. {W}ith salinity stress, the structure and activities of the microbial community were significantly affected. {A}lthough the biomass of actinobacteria community increased with salinity stress, there was a substantial reduction in microbial activity in all soils. {T}he soil organically amended was, however, less affected by salinity stress than the control or inorganic fertilizer treatment. {T}his suggests that amendment using {P}. reticulatum residues may improve the ability of soils to respond to saline conditions.}, keywords = {{S}oil management ; {S}alinity ; {P}iliostigma reticulatum ; {M}icrobial activity ; {R}esistance ; {SENEGAL} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{J}ournal of {E}nvironmental {M}anagement}, volume = {161}, numero = {}, pages = {30--37}, ISSN = {0301-4797}, year = {2015}, DOI = {10.1016/j.jenvman.2015.06.017}, URL = {https://www.documentation.ird.fr/hor/fdi:010065285}, }