@article{PAR00016503,
  title = {{T}illage and fertilization practices affect soil aggregate stability in a humic {C}ambisol of {N}orthwest {F}rance},
  author = {{B}ottinelli, {N}icolas and {A}ngers, {D}. {A}. and {H}allaire, {V}. and {M}ichot, {D}. and {L}e {G}uillou, {C}. and {C}luzeau, {D}. and {H}eddadj, {D}. and {M}enasseri-{A}ubry, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{R}educed tillage and organic fertilizer application usually result in an increase in soil aggregate stability ({AS}). {H}owever, the magnitude of the effects can vary with soil properties and season. {T}he aim of this study was to investigate {AS} dynamics over three seasons in a soil under various tillage and fertilization practices. {T}he study was performed under three tillage practices (moldboard plowing ({MP}), surface tillage ({ST}) and no -tillage ({NT})) and two types of fertilizer (poultry manure and mineral) seven and eight years after their establishment in {N}orthwest {F}rance. {AS} was measured in three different seasons: spring, summer and winter. {S}oil properties that potentially influence {AS} such as organic carbon ({OC}), hot-water extractable carbohydrates ({HWEC}), water content ({WC}) and water repellency ({WR}) were also studied. {O}n average, for all sampling dates, {AS} was 34% higher under {NT} than {MP}. {C}onversely, the effect of {ST} on {AS} varied with sampling date with values close to {NT} in mid -spring and summer, and values close to {MP} in early spring and winter. {P}oultry manure increased {AS} by an average of 12% regardless of sampling date or tillage practice. {V}ariations in {AS} due to management practices were related to {OC} (r = 0.92) and {HWEC} (r= 0.88). {D}ifferences in {AS} between sampling dates were slightly greater than the effects of management practices. {O}n average across management practices, {AS} increased by 47% from early spring to summer and decreased by 59% in winter. {T}hese variations were related to soil {WC} (r= -0.67) and {WR} (r= 0.72) at time of sampling. {W}e suggest that seasonal variations in {AS} were at least partly due to variations in {WC} which acted physically by modifying the water entry rate into the aggregates and slaking effects. {I}n contrast, the long-term {AS} dynamics were related to the organic matter dynamics, which are controlled by management practices. {B}ecause of the predominant effect of climate on {AS}, we suggest measuring {AS} in winter and summer to better estimate the effects of management practices on soil erodibility in this region.},
  keywords = {{C}onservation tillage ; {A}ggregate stability ; {T}emporal variations ; {FRANCE}},
  booktitle = {},
  journal = {{S}oil and {T}illage {R}esearch},
  volume = {170},
  numero = {},
  pages = {14--17},
  ISSN = {0167-1987},
  year = {2017},
  DOI = {10.1016/j.still.2017.02.008},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00016503},
}