@article{PAR00005671,
  title = {{A}ssessment of major cassava diseases in {T}ogo in relation to agronomic and environmental characteristics in a systems approach},
  author = {{B}anito, {A}gnassim and {V}erdier, {V}alerie and {K}pemoua, {K}ossi {E}ssotina and {W}ydra, {K}erstin},
  editor = {},
  language = {{ENG}},
  abstract = {{A}  cassava  disease  survey  was  conducted  in  four  agroecological  zones  of  {T}ogo.  {H}igh  incidences  of cassava bacterial blight, cassava mosaic disease and cercosporioses were observed across ecozones, while anthracnose disease was rare. {B}acterial blight field incidences of 90.5% in the dry savanna zone, 70%  in  the  forest  savanna  transition  zone,  64%  in  the  wet  savanna  zone  and  52.6%  in  the  forest  zone, were recorded, with plant incidences ranging from 27.4% in the forest zone to 72.7% in the dry savanna zone. {M}osaic  disease  field  incidences  were  nearly  100%  in  all  the  ecozones  and  high  plant  incidences up to 86.9% were found. {C}ercospora leaf diseases brown leaf spot, blight leaf spot and white leaf spot occurred in all the ecozones with incidences ranging from 68 to 100%. {N}egative correlations between bacterial blight and mosaic disease, and between mosaic disease and white leaf spot were found, while brown leaf spot and blight leaf spot, brown leaf spot and white leaf spot, and blight leaf spot and white leaf  spot  were  positively  correlated.  {F}ield  incidence  of  bacterial  blight  was  positively  correlated  with plant age, ecozones higher severity in dryer ecozones ({P} < 0.01), and weed density ({P} < 0.05). {F}urther significant, but negative correlations occurred between bacterial blight and cercospora brown leaf spot on the other hand and vegetation type in the surroundings field (number of trees) ({P} < 0.05). {C}ercosporabrown  leaf  spot  was  also  significantly  negatively  associated  with  the  number  of  crops  in  a  field (intercropping)  ({P}  <  0.05),  and {C}ercospora  white  leaf  spot  with  sandy  soils  ({P}  <  0.01).  {R}esults  indicate that  agroecological  factors  such  as  ecozone,  plant  age,  weed  density,  vegetation  type,  intercropping and  soil  type  and  moisture  influence  disease  occurrence  and  should  be  considered  when  developing integrated control measures.},
  keywords = {},
  booktitle = {},
  journal = {{A}frican {J}ournal of {A}gricultural {R}esearch},
  volume = {2},
  numero = {9},
  pages = {418--428},
  ISSN = {1991-637{X}},
  year = {2007},
  DOI = {10.5897/{AJAR}.9000073},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00005671},
}