@article{fdi:010070680,
  title = {{I}nteractive effects of compost, plants and earthworms on the aggregations of constructed {T}echnosols},
  author = {{D}eeb, {M}. and {D}esjardins, {T}hierry and {P}odwojewski, {P}ascal and {P}ando, {A}nne and {B}louin, {M}. and {L}erch, {T}.{Z}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ggregation is an important physical process to study during the early formation of {T}echnosols. {I}t is known to be influenced both by the organic matter content and soil biota. {C}onstructed {T}echnosols represent good models to test the importance of these factors since their composition can be easily manipulated by mixing different proportions of parent materials and introducing soil organisms. {I}n this study, we performed a 5 month mesocosm experiment, using excavated deep horizons of soils ({EDH}) as mineral material mixed with green waste compost ({GWC}) at six different proportions (from 0 to 50%) in the presence or absence of plants and/or earthworms. {A}fter 21 weeks of incubation, aggregation was characterized by: 1) determining the size fraction and morphology, 2) measuring the distribution of organic carbon ({OC}) in each fraction and 3) testing the aggregate stability. {R}esults showed that organisms accounted for 50% of soil aggregation variance while {GWC} was responsible for only 5% of the variance. {T}he percentage of total variance of {OC} distribution in aggregates explained by organisms, {GWC}, and the interaction of the two was similar (28%, 22% and 26%, respectively). {T}he effect of {GWC} on structural stability was negligible (2%) compared to that of organisms (70%). {T}he effect of earthworms combination with plants was complex: plants had a dominant effect on the distribution of the size of aggregates by disrupting earthworm casts, but earthworms had a dominant effect over plants for aggregate stability under fast wetting only when the percentage of compost was low. {T}his study underlines the importance of considering the interaction of the organic matter and soil biota: in this case, increasing compost proportion in a {T}echnosol has significant effects on aggregation only in the presence of plants or earthworms.},
  keywords = {{FRANCE}},
  booktitle = {},
  journal = {{G}eoderma},
  volume = {305},
  numero = {},
  pages = {305--313},
  ISSN = {0016-7061},
  year = {2017},
  DOI = {10.1016/j.geoderma.2017.06.014},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070680},
}