Abundance, population dynamics and impact of the leucaena psyllid Heteropsylla cubana Crawford in a maize-leucaena agroforestry system in Kenya

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dc.contributor.authorOgol, C.K.P.O.
dc.contributor.authorSpence, J. R.
dc.date.accessioned2014-05-29T09:11:49Z
dc.date.available2014-05-29T09:11:49Z
dc.date.issued1997-06
dc.descriptionDOI: http://dx.doi.org/10.1017/S1742758400016350en_US
dc.description.abstractWe monitored abundance, population dynamics and damage impacts of the leucaena psyllid Heteropsylla cubana Crawford (Homoptera: Psyllidae) in a maize-leucaena agroforestry system. The abundance of local ladybird beetle predator populations were also evaluated. The studies were conducted between June 1993 and November 1995 at Mtwapa and Amoyo in coastal and western Kenya respectively. Alley-cropping leucaena with maize had no effect on the abundance of the leucaena psyllid or its coccinellid predators. Therefore, neither the ‘resource concentration’ hypothesis nor the ‘enemies’ hypothesis corroborated for the psyllid-leucaena system within the spatial scale of this study. Psyllid populations were generally much higher at Mtwapa than at Amoyo, suggesting possible environmental effects on population growth. Psyllid populations were influenced by weather (mainly rainfall) and availability of suitable shoots. New growth of young shoots following rainfall encouraged psyllid abundance as long as weather conditions were not extreme. Though population of the generalist ladybird beetles was correlated with that of its psyllid prey, beetles did not appear to have significant effect on prey populationsen_US
dc.identifier.citationInternational Journal of Tropical Insect Science / Volume 17 / Issue 02 / June 1997, pp 183-192en_US
dc.identifier.issn1742-7584
dc.identifier.other1742-7592
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/9698
dc.language.isoenen_US
dc.publisherCambridge University Pressen_US
dc.subjectLeucaena leucocephalaen_US
dc.subjectmaizeen_US
dc.subjectagroforestryen_US
dc.subjectleucaena psylliden_US
dc.subjectHeteropsylla cubanaen_US
dc.subjectpopulation dynamicsen_US
dc.subjectladybird beetlesen_US
dc.subjectresource concentration hypothesisen_US
dc.subjectenemies hypothesisen_US
dc.subjectKenyaen_US
dc.titleAbundance, population dynamics and impact of the leucaena psyllid Heteropsylla cubana Crawford in a maize-leucaena agroforestry system in Kenyaen_US
dc.typeArticleen_US
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