Inter-cropping in western Kenya consists of an improved fallow system where maize (Zea mays L.) and bean (Phaseo/us vulgaris L.) are intercropped from early March, which is the begin-ning of the long rainy season (March-July). Two months later (May-June) the bean crop is harvested and the soil improving shrubs Sesbania sesban (L.) Merr., Crotalaria grahamiana Wight & Am. or Tephrosia ogeliiHook. f. are planted. The maize is normally harvested about two months after planting of these shrubs. From July/August to February of the following year the shrubs grow alone on the otherwise fallow fields. They are then removed by slashing in February just before the start of the next cycle of maizelbean planting. The bean genotypeusedis the haricot cultivar Roscoco GLP-24. Nematodes associated with the above inter-cropping system have not been investigated. This paper reports on the ncidence of plant-parasitic nematode species in three districts of the western highlands of Kenya.