@article{PAR00024194,
  title = {{A}gronomic factors influencing fall armyworm ({S}podoptera frugiperda) infestation and damage and its co-occurrence with stemborers in maize cropping systems in {K}enya},
  author = {{M}utyambai, {D}. {M}. and {N}iassy, {S}. and {C}alatayud, {P}aul-{A}ndr{\'e} and {S}ubramanian, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}imple {S}ummary {F}all armyworm ({FAW}), an invasive pest of maize and other cultivated crops, has been established in {K}enya since 2016. {I}t is a serious threat to maize production and poses a challenge to food and nutrition security. {L}ittle is known about its co-occurrence with resident stemborers, relative infestation and damage and how agronomic factors influence its infestation and damage in maize cropping systems across different agro-ecological zones. {M}aize fields were surveyed across three agro-ecological zones in {K}enya. {F}all armyworm was found across the three agro-ecological zones and it dominated resident stemborers in maize cropping systems. {I}ts infestations and damage were highest at coastal lowlands compared to mid-altitude and high-altitude lands. {M}aize grown under mixed cropping systems, with rainfed production and weeded frequently had low infestation and damage compared to those grown under monoculture, with irrigation and no weeding, respectively. {Y}oung vegetative maize plants were more infested and damaged compared to mature plants. {D}ifferent maize varieties were found to have different infestation and damage levels. {T}hese results demonstrate dominance of {FAW} over resident stemborers and that agronomic practices play a role in influencing {FAW} infestation and damage in maize cropping systems, which need to be considered when designing sustainable pest management solutions. {F}all armyworm ({FAW}), {S}podoptera frugiperda {J}.{E} {S}mith, ({L}epidoptera: {N}octuidae) is a serious invasive pest of maize that has been established in {K}enya since 2016. {L}ittle is known about its co-occurrence with resident stemborers, relative infestation and damage and how agronomic factors influence its infestation and damage in maize cropping systems across different agro-ecological zones. {T}his study assessed {FAW} co-occurrence with resident stemborers, relative infestation and damage across three agro-ecological zones, and the effects of different agronomic practices on its infestation and damage in maize cropping systems in {K}enya. {A} total of 180 maize farms were surveyed across three different agro-ecological zones. {FAW} infestation and damage was highest in lowlands compared to mid-altitude and high-altitude lands. {I}ts population (eggs and larvae) dominated that of resident stemborers in maize fields. {M}aize grown under mixed cropping systems, with rainfed production and weeded frequently had low infestation and damage compared to those grown under monoculture, with irrigation and no weeding, respectively. {Y}oung vegetative maize plants were more infested and damaged compared to mature plants. {D}ifferent maize varieties were found to have different infestation and damage levels with {P}ioneer having the least damage. {T}hese results demonstrate that agronomic practices play a role in influencing {FAW} infestation and damage in maize cropping systems. {F}urther, the population of {FAW} is dominating that of stemborers in maize cropping systems in {K}enya, four years after its invasion. {T}hus, agronomic practices need to be considered while designing sustainable agro-ecological-based management solutions for resource-constrained smallholder farmers.},
  keywords = {agro-ecology ; agronomic practices ; fall armyworm ; {K}enya ; {KENYA}},
  booktitle = {},
  journal = {{I}nsects},
  volume = {13},
  numero = {3},
  pages = {266 [21 p.]},
  year = {2022},
  DOI = {10.3390/insects13030266},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00024194},
}