@article{fdi:010072616,
  title = {{M}onitoring changes in the chemical properties of an oxisol under long-term no-tillage management in subtropical {B}razil},
  author = {{G}uimaraes, {M}. {F}. and {F}onseca, {I}. {C}. {B}. and {B}rossard, {M}ichel and {P}ortella, {C}. {M}. {R}. and {B}rito, {O}. {R}. and {R}itchie, {J}. {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n tropical areas, soil chemical properties are most often studied in relationship to the type of tillage system. {T}his article presents data of the long-term effects of no-tillage ({NT}) management systems on the soil chemical properties of an oxisol in subtropical {B}razil. {T}he study area was on a commercial farm where {NT} systems had been adopted in 1978. {S}oil samples were collected annually from 1983 to 1994 after winter crop harvest in 16 fields and at depths of 0.0 to 0.1 m and 0.1 to 0.2 m. {O}rganic {C}, exchangeable calcium, magnesium, potassium, extractable phosphate, and p{H} were measured. {S}oils were grouped by a multivariate statistical agglomerative hierarchical method into five classes ({I}-{V}) based on statistical similarity to assess annual changes in soil chemical properties. {T}his study shows that it is possible to maintain good soil chemical properties under operational {NT} systems in these subtropical conditions. {T}his study also demonstrated the importance of sequence of crops for maintaining acceptable levels of soil organic matter and good soil chemical properties.},
  keywords = {{N}o-tillage ; {S}oil management ; {C}hemical properties ; {S}oil organic carbon ; {C}lay soils ; {O}xisol},
  booktitle = {},
  journal = {{S}oil {S}cience},
  volume = {173},
  numero = {6},
  pages = {408--416},
  ISSN = {0038-075{X}},
  year = {2008},
  DOI = {10.1097/{SS}.0b013e31817739fb},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072616},
}