Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroon

Simple item page
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInstitute of Plant Diseases and Plant Protection, Germanyen
cg.coverage.countryCameroonen
cg.coverage.iso3166-alpha2CMen
cg.coverage.regionAfricaen
cg.coverage.regionMiddle Africaen
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1603/0022-0493-94.6.1434en
cg.isijournalISI Journalen
cg.issn0022-0493en
cg.issue6en
cg.journalJournal of Economic Entomologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaMAIZEen
cg.volume94en
dc.contributor.authorNdemah, R.en
dc.contributor.authorSchulthess, F.en
dc.contributor.authorKorie, S.en
dc.contributor.authorBorgemeister, C.en
dc.contributor.authorCardwell, K.F.en
dc.date.accessioned2018-08-16T14:21:04Zen
dc.date.available2018-08-16T14:21:04Zen
dc.identifier.urihttps://hdl.handle.net/10568/96581
dc.titleDistribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroonen
dcterms.abstractGeographic distribution, relative importance, and effect of lepidopterous stem and ear borers on maize, Zea mays L., were studied in the humid forest and the mid-altitude zones of Cameroon from 1994 to 1997. Six villages were chosen in the forest zone and grouped into three blocks representing gradients in human population density. A single block with three villages was chosen in the mid-altitude. Farmers’ maize fields were surveyed during the vegetative growth phase for Busseola fusca (Fuller) egg batches, and at harvest for number of larvae and pupae by species, plant damage, and ear weight. There was no significant block effect for any of the variables measured, and most of the overall variance (72–99%) was attributed to within-field variability. In the forest zone, the noctuid B. fusca and the pyralid Eldana saccharina (Walker) accounted for >80% of all species in almost all locations, followed by the pyralid Mussidia nigrivenella (Ragonot) and the tortricid Cryptophlebia leucotreta (Meyrick). The noctuid Sesamia calamistis (Hampson) was found in almost all locations during the first season but disappeared in most locations in the second season. B. fusca egg infestation was significantly higher during the second compared with the first season, whereas larval and pupal densities were much higher during the first season. E. saccharina was the predominant species during the second season, when densities increased fourfold. In the mid-altitude, B. fusca was the predominant species. No significant differences in pest densities, plant damage, and ear weight were found between years. Results of stepwise regression of stem and ear damage on pest densities verified the relative importance of the individual species. In the forest zone, ear and stem damage significantly reduced ear weight, whereas in the mid-altitude only stem tunneling was significant.en
dcterms.accessRightsLimited Accessen
dcterms.audienceScientistsen
dcterms.available2001-12-01en
dcterms.bibliographicCitationNdemah, R., Schulthess, F., Korie, S., Borgemeister, C. & Cardwell, K.F. (2001). Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and mid-altitude of Cameroon. Journal of Economic Entomology, 94(6), 1434-1444.en
dcterms.extent1434-1444en
dcterms.issued2001-12-01en
dcterms.languageenen
dcterms.publisherOxford University Pressen
dcterms.subjectbusseola fuscaen
dcterms.subjecteldana saccharinaen
dcterms.subjectmussidia nigrivenellaen
dcterms.subjectsesamia calamistisen
dcterms.subjectmaizeen
dcterms.typeJournal Articleen

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IITA Journal Articles