@article{fdi:010097714,
  title = {{C}omparison of three groundnut varieties in the sub-{S}aharan {A}frica : yield, crop diseases and symbiotic interactions with soil microorganisms},
  author = {{D}jiba, {S}. and {C}lermont {D}auphin, {C}athy and {S}vistoonoff, {S}ergio and {F}all, {S}. and {C}ournac, {L}aurent and {D}iarra, {K}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o enhance groundnut yields in {S}enegal, research generated technical proposals. {H}owever, a systemic

perspective is necessary to assess their performance within the context of farmers' fields. {W}e evaluated

three short-cycle groundnut varieties - {F}leur 11, 55-33, and 55-437 on two farmers' fields with different

soil fertility levels, and considering two levels of mineral fertilization and rhizobial inoculation. {T}he trials

were conducted in 2018, a year characterized by a prolonged rainfall break during the vegetative phase

of the crop. {V}arieties 55-33 and 55-437 achieved half of their potential yield, while {F}leur 11 achieved only

one-quarter. {T}he {F}leur 11 variety was significantly affected by fungal diseases, leading to seedling

mortality and pod rot, particularly on the less fertile field. {T}he effect of fertilizer application on yields was

minimal in the least fertile field. {W}ith an average of 114 nodules per plant, the varieties demonstrated a

good nodulation capacity, indicating that biological nitrogen fixation was potentially significant. {F}ertilizer

application enhanced nodulation, suggesting that nutrient availability, especially phosphorus, was a

limiting factor for symbiotic nitrogen fixation in these agroecosystems. {M}ycorrhization was intense,

especially in the least fertile soil. {B}acterial inoculation showed not effect on the measured variables.

{S}tepwise regression analysis revealed that variability in seed yield was primarily associated with soil

carbon content and crop damages from soil-borne diseases, whereas fodder yield was mainly linked to

the number of nodules per plant. {A}lthough often overlooked in current crop models, soil-borne diseases

represent a major barrier to improving groundnut yields. {S}ymbiotic interactions with soil organisms appear

to be of critical importance in the studied agroecosystems. {C}ombining diseases resistance, strong

potential symbiosis with soil microbes, and a favorable response of fertilizer, varieties 55-33 and 55-437

are valuable options for enhancing the productivity and resilience of groundnut crops in marginal

environments.},
  keywords = {{SENEGAL} ; {DIOHINE}},
  booktitle = {},
  journal = {{I}nnovations {A}gronomiques},
  volume = {99},
  numero = {},
  pages = {90--102},
  ISSN = {1958-5853},
  year = {2025},
  DOI = {10.17180/ciag-2025-vol99-art09-{GB}},
  URL = {https://www.documentation.ird.fr/hor/fdi:010097714},
}