@article{fdi:010082563,
  title = {{C}ontrolled grazing of maize residues increased carbon sequestration in no-tillage system : a case of a smallholder farm in {S}outh {A}frica},
  author = {{A}bdalla, {K}. and {M}utema, {M}. and {C}hivenge, {P}. and {C}haplot, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{D}espite the positive impact of no-tillage ({NT}) on soil organic carbon ({SOC}), its potential to reduce soil {CO}2 emission still needs enhancing for climate change mitigation. {C}ombining {NT} with controlled-grazing of crop residues is known to increase nutrient cycling; however, the impacts on soil {CO}2 effluxes require further exploration. {T}his study compared soil {CO}2 effluxes and {SOC} stocks from conventional tillage with free grazing ({CTFG}), {NT} with free grazing ({NTFG}), {NT} without grazing ({NTNG}), {NT} without crop residues ({NTNR}) and {NT} with controlled-grazing ({NTCG}), in {S}outh {A}frica. {S}oil {CO}2 effluxes were measured 1512 times over two years using {LI}-{COR} 6400{XT}, once to thrice a month. {B}aseline {SOC}s data were compared against values obtained at the end of the trial. {O}verall, {NTCG} decreased soil {CO}2 fluxes by 55 and 29% compared to {CTFG} and {NTNR}, respectively. {NTCG} increased {SOC}s by 3.5-fold compared to {NTFG}, the other treatments resulted in {SOC} depletion. {T}he increase in {SOC}s under {NTCG} was attributed to high {C} input and also low soil temperature, which reduce the {SOC} mineralization rate. {C}ombining {NT} with postharvest controlled-grazing showed high potential to increase {SOC}s, which would help to mitigate climate change. {H}owever, it was associated with topsoil compaction. {T}herefore, long-term assessment under different environmental, crop, and soil conditions is still required.},
  keywords = {conservative agriculture ; carbon dioxide ; carbon sequestration ; smallholder systems ; soil respiration ; {AFRIQUE} {DU} {SUD} ; {KWAZULU} {NATAL}},
  booktitle = {},
  journal = {{A}gronomy},
  volume = {11},
  numero = {7},
  pages = {1421 [15 p.]},
  year = {2021},
  DOI = {10.3390/agronomy11071421},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082563},
}