@article{fdi:010007518,
  title = {{D}ivision {S}-6-soil and water management and conservation : dynamics of soil physical properties in amazonian agroecosystems inoculated with earthworms},
  author = {{A}legre, {J}.{C}. and {P}ashanasi, {B}. and {L}avelle, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he combined use of earthworm inoculation and organic input is considered an efficient way to improve traditional slash-and-burn agriculture in the humid tropics. {T}his study tests the hypothesis that the resistant macroaggregate structure that results from earthworm activities is likely to promote sustainability by favoring water infiltration and soil aeration. {S}ix successive crops (maize (#{Z}ea mays$ {L}.) - rice (#{O}ryza sativa$ {L}.) - cowpea (#{V}igna unguiculata$ ({L}.) {W}alp.) - rice - rice - rice) were grown from {M}arch 1990 to {J}anuary 1993 on a fine-sandy, siliceous, isohyperthermic typic paleudult previously covered by forest at {Y}urimaguas ({P}eruvian {A}mazonia). {T}he experimental design included a combination of three organic residue treatments (without residues, with crop residues, and with crop residues plus green manure), with or without earthworm (#{P}ontoscolex corethrurus$) inoculation (36 g fresh weight/m2). {S}oil physical properties (bulk density, total porosity, infiltration, sorptivity, soil water tension, and aggregate-size distribution) were measured before clearing and after harvesting each crop. {T}he proportion of macroaggregates (> 1 cm) increased from 25.1 to 32.7% in inoculated treatments, whereas the proportion of small aggregates (< 2 cm) decreased from 33.2 to 26.1%, and no change was observed in the intermediate (2-10 mm) category. {I}n the control treatment, no significant changes were observed. {E}arthworm activities significantly increased bulk density (from 1.12 to 1.23 {M}g/m3), and decreased porosity (from 58 to 53%) and sorptivity (from 0.45 to 0.15 cm/s1/2). {S}oil water tension was also affected by the presence of earthworms through increased water uptake by larger plants and changes in soil structure. {L}onger term experiments are necessary to confirm that the activity of the earthworm may not eventually have detrimental effects. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{SOL} ; {CARACTERISTIQUE} {PHYSIQUE} ; {LOMBRIC} ; {INOCULATION} ; {RENDEMENT} ; {DENSITE} ; {POROSITE} ; {INFILTRATION} ; {HUMIDITE} {DU} {SOL} ; {PEROU} ; {AMAZONIE}},
  booktitle = {},
  journal = {{S}oil {S}cience {S}ociety of {A}merica {J}ournal},
  volume = {60},
  numero = {5},
  pages = {1522--1529},
  ISSN = {0361-5995},
  year = {1996},
  URL = {https://www.documentation.ird.fr/hor/fdi:010007518},
}