The influence of the cassava mealybug Phenacoccus manihoti Mat. Ferr. (Hom., Pseudococcidae) on yield formation of cassava, Manifhoti esculenta Crantz

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cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.identifier.doihttps://doi.org/10.1111/j.1439-0418.1991.tb00306.xen
cg.issn0931-2048en
cg.issn1439-0418en
cg.issue1-5en
cg.journalJournal of Applied Entomologyen
cg.subject.iitaCASSAVAen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.iitaPLANT DISEASESen
cg.volume111en
dc.contributor.authorSchulthess, F.en
dc.contributor.authorBaumgaertner, J.U.en
dc.contributor.authorDelucchi, V.en
dc.contributor.authorGutiérrez, A.Pen
dc.date.accessioned2019-06-25T17:09:00Zen
dc.date.available2019-06-25T17:09:00Zen
dc.identifier.urihttps://hdl.handle.net/10568/101704
dc.titleThe influence of the cassava mealybug Phenacoccus manihoti Mat. Ferr. (Hom., Pseudococcidae) on yield formation of cassava, Manifhoti esculenta Crantzen
dcterms.abstractThe cassava mealybug (CM), Phenacoccus manihoti Mat.‐Ferr., is a dry season pest of cassava, Manihot esculenta Crantz. Its effects on the patterns of dry matter production and allocation in cassava planted July, September 1982 and May 1983 and grown for 12 months was studied. Peak CM population densities varied greatly (from 600 to 37000 CM per plant) due to plant size at the time of infestation, duration of infestation, and mortality from the introduced parasitoid Fpidinocarsis lopezi (De Santis). CM feeding reduced new leaf production and assimilation and allocation of dry matter to storage roots. Severly infested cassava plants, lost between 9 % and 46 % during the dry season, compared to CM‐free plants. At the beginning of the ensuing rainy season, mobilisation of reserves from storage roots for regrowth caused temporary root yield losses of up to 75%. Yield losses at harvest across planting dates measured 12 months after planting, were of 52 to 58 % in the CM‐infested plants compared to noninfested plants.en
dcterms.accessRightsLimited Accessen
dcterms.available2009-08-26en
dcterms.bibliographicCitationSchulthess, F., Baumgartner, J.U., Delucchi, V. & Gutierrez, A.P. (1991). The influence of the cassava mealybug, Phenacoccus manihoti Mat.‐Ferr. (Horn., Pseudococcidae) on yield formation of cassava, Manihot esculenta Crantz. Journal of Applied Entomology, 111(1-5), 155-165.en
dcterms.extentpp. 155-165en
dcterms.issued1991-01-12en
dcterms.languageenen
dcterms.licenseCopyrighted; all rights reserveden
dcterms.publisherWileyen
dcterms.subjectcassavaen
dcterms.subjectproductionen
dcterms.subjectfeedingen
dcterms.subjectplantsen
dcterms.subjectrainy seasonen
dcterms.subjectrootsen
dcterms.subjectyield lossesen
dcterms.subjectinfestationen
dcterms.typeJournal Articleen

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