@article{fdi:010083246, title = {{S}triga gesnerioides ({W}illd.) {V}atke infestation and distribution as affected by soil properties and varieties at the plot and landscape scales in cowpea-based cropping systems}, author = {{S}adda, {A}. and {M}alam {I}ssa, {O}umarou and {J}angorzo, {N}. {S}. and {S}aidou, {A}. {A}. and {I}ssoufou, {H}. {B}. {A}. and {D}iouf, {A}.}, editor = {}, language = {{ENG}}, abstract = {{S}triga is among the most noxious parasitic plant genera causing yield losses to staple crops in the semiarid and subhumid areas of {A}frica and {A}sia. {U}nderstanding the factors that affect the current distribution of {S}triga infestation is critical for developing integrated control strategies. {T}his study attempts to elucidate the soil properties that are related to and that affect the plot-level infestation and land-scape level distribution of {S}triga gesnerioides ({W}illd.) {V}atke in {N}iger. {A}t the plot scale, 27 cowpea varieties were sown in randomised blocks of 30 plots in 14 fields, and their soils were sampled and analysed. {S}. gesnerioides infestations were recorded in the fields over 2 years. {T}hese records were obtained with georeferenced data, and soil properties were extracted from global databases. {A}t the plot scale, the variance in {S}. gesnerioides infestations were affected by available phosphorus (29.17%), organic carbon (16.61%), p{H} (15.15%), nitrogen (13.13%), and sand contents (10.12%) and varied among the cowpea varieties. {T}his led to the identification of cowpea varieties with consistent high levels of resistance (varieties: {CS}030 and {CS}095). {A}t the landscape scale, soil moisture is the key factor explaining 48.6% of {S}. gesnerioides distribution, followed by silt content (28.1%), sand content (13.7%), and bulk density (6.2%). {T}hese results showed a clear dichotomy in the interactions between the occurrence of {S}. gesnerioides and soil properties from the plot to landscape scales. {T}hese results are valuable for understanding the ecology of {S}. gesnerioides and can support the development of integrated control strategies.}, keywords = {{C}owpea ({V}igna unguiculata) ; parasitic weed ; {S}ahel ; semiarid soils ; {S}triga management ; witchweed ; {ZONE} {SAHELIENNE} ; {ZONE} {SEMIARIDE}}, booktitle = {}, journal = {{W}eed {R}esearch}, volume = {61}, numero = {6}, pages = {519--531}, ISSN = {0043-1737}, year = {2021}, DOI = {10.1111/wre.12510}, URL = {https://www.documentation.ird.fr/hor/fdi:010083246}, }