@article{fdi:010075711,
  title = {{S}hort-term effect of 915-{MH}z microwave treatments on soil physicochemical and biological properties},
  author = {{M}aynaud, {G}. and {B}audoin, {E}z{\'e}kiel and {B}ourillon, {J}ulie and {D}uponnois, {R}obin and {C}leyet-{M}arel, {J}. {C}. and {B}runel, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o control the soil seed bank of invasive plants with microwaves represents an alternative method to chemical treatments, but it could alter soil quality. {M}icrowave effects were investigated on 17 soil physicochemical and biological properties. {F}our 915-{MH}z microwave treatments combining power and duration of exposure were applied on alluvial soil from a grassland using {F}estuca seeds as an internal standard to evaluate the efficiency of sterilization. {T}wo treatments, 2 k{W}-8 and 4 k{W}-4 min, completely inhibited {F}estuca seed germination and caused the soil temperature to reach at least 80 degrees {C}. {C}onversely, the other treatments, 2 k{W}-4 and 4 k{W}-2 min, failed to affect seed germination while raising the temperature to 50-60 degrees {C}. {M}icrobial biomass, the density of culturable heterotrophic bacteria and fluorescent {P}seudomonads as well as fluorescein di-acetate hydrolysis decreased significantly by 2.7-, 1.1-, 1.4- and 5.1-fold compared with the control, respectively, following the 2 k{W}-8 and 4 k{W}-4 min treatments. {T}hese treatments also increased dissolved organic carbon and inorganic phosphorus contents by 1.6- and 1.2-fold, respectively. {I}n contrast, nitrate increased only (about 140%) in the soils under the 2 k{W}-4 and 4 k{W}-2 min conditions. {F}urthermore, the growth of {M}edicago truncatula {G}aertn. seedlings transplanted in microwave-treated soils under the 2 k{W}-8 and 4 k{W}-4 min conditions was not impaired despite the reduction in total nitrogen and the microbial population and smaller numbers of nodules. {T}hese results suggest that soil seed bank sterilization by microwaves that is 100% effective alters soil microbial indicators more strongly than chemical treatments without compromising the early growth stages of transplanted {M}edicago plants. {H}ighlights {E}ffects of microwave seed sterilization on soil physicochemical and biological properties. {M}icrobial properties were more sensitive than chemical ones. {M}icrobial biomass, bacterial density, hydrolase activity and root nodulation were reduced. {S}oluble carbon, nitrate and phosphorus increased depending on treatment effectiveness.},
  keywords = {invasive plant species ; soil seed bank ; microbial indicators ; in situ ; catabolic potential ; microwave sterilization ; soil quality},
  booktitle = {},
  journal = {{E}uropean {J}ournal of {S}oil {S}cience},
  volume = {70},
  numero = {3},
  pages = {443--453},
  ISSN = {1351-0754},
  year = {2019},
  DOI = {10.1111/ejss.12769},
  URL = {https://www.documentation.ird.fr/hor/fdi:010075711},
}