@article{fdi:010067747,
  title = {{T}illage impact on soil erosion by water : discrepancies due to climate and soil characteristics},
  author = {{M}hazo, {N}. and {C}hivenge, {P}. and {C}haplot, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{N}o-tillage ({NT}) is promoted for soil and water conservation, but research findings on overland flow and soil erosion are inconsistent across different ecosystems, with some studies showing no benefits of {NT} over conventional tillage ({CT}). {A} global literature review was conducted to quantify the impact of {NT} on water runoff, sediment concentration and soil losses. {T}he objective was to identify the underlying causes of the variability in the performance of {NT} across different environments. {D}ata from 282 paired {NT} and {CT} runoff plots from 41 research studies worldwide were analysed using meta-analysis and principal component analysis ({PCA}). {S}ediment concentration and soil losses were 56 and 60% lower under {NT} than {CT}, respectively. {T}hese tended to be greater under {CT} than {NT} on long plots (90% for sediment concentration and 94% for soil losses) and steepest slopes (79 and 77%, respectively). {G}reater differences in sediment concentration and soil losses between {NT} and {CT} were observed in low clay soils and under temperate climates. {W}hile on average there were no differences on runoff coefficient, {NT} decreased runoff coefficient by about 40% compared to {CT} in mulched soils, under cool climate (<10 degrees {C}), and for experiments done >5 years. {O}verall, the results indicated that {NT} has greater potential to reduce runoff and soil losses in temperate regions where soils of peri-glacial influence are relatively young, moderately weathered and fragile compared to the heavily weathered clayey tropical soils that are well aggregated and less erodible. {T}he results of this study are expected to inform scientists, practitioners and policy makers on the links between land management and soil functioning processes. {P}olicy makers and development implementers will be able to make informed choices of land management techniques for effective {NT} implementation, for instance by having more mulch input under warm climates.},
  keywords = {{N}o-tillage ; {R}unoff coefficient ; {S}ediment concentration ; {S}oil erosion ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{A}griculture {E}cosystems and {E}nvironment},
  volume = {230},
  numero = {},
  pages = {231--241},
  ISSN = {0167-8809},
  year = {2016},
  DOI = {10.1016/j.agee.2016.04.033},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067747},
}