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Six weight-classes of white guinea yam (Dioscòrea rotundata Poir.) setts—2–5, 5.01–10, 10.01–20, 20.01–30, 30.01–40, and 40.01–50 g—were presprouted in fresh, moist sawdust in open-air, propagation beds. The 2–5 g and 5.01–10 g classes were described as microsetts. Three natural groups patterned ...


Gyansa-Ameyyaw, C.E.Hahn, S.K.Álvarez, M.N.Doku, E.V.[Determination of optimum sett size for white guinea yam (Dioscorea rotundata Poir.) seed yam production: trends in sprouting in the presprout nursery and field performance]Determination of optimum sett size for white guinea yam (Dioscorea rotundata Poir.) seed yam production: trends in sprouting in the presprout nursery and field performance
Lema, K.Osiru, D.Hahn, S.K.[Effectiveness of the polyethylene plastic mulch as a control measure against sweet potato weevils (Cylas spp., Coleoptera: Curculionidae)]Effectiveness of the polyethylene plastic mulch as a control measure against sweet potato weevils (Cylas spp., Coleoptera: Curculionidae)
Kanno, H.Dixon, A.Asiedu, RobertHahn, S.K.[Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA]Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA

IITA's research in breeding cassava and sweet potato for resistance to pests and diseases of major economic importance in Africa is discussed under the headings: breeding cassava for resistance to pests (cassava green spider mite (Mononychellus progresivus and M. tanajoa) and cassava mealybug (Ph...


Hahn, S.K.Caveness, F.E.Lema, K.M.Theberge, R.L.[Breeding cassava and sweet potato for pest and disease resistance in Africa]Breeding cassava and sweet potato for pest and disease resistance in Africa
Dodo, H.W.Hill, W.A.Mulongoy, K.Adeyeye, S.O.Hahn, S.K.[Population of nitrogenfixing bacteria in sweet potato fibrous roots]Population of nitrogenfixing bacteria in sweet potato fibrous roots

The base section of the ACMV-susceptible clone 60506 recorded the highest disease incidence and severity relative to all other sections of the moderately resistant clone TMS 4(2)1425 and the resistant clone TMS 30001. However, in all clones, the base section recorded higher disease than either th...


Njock, T.E.Atiri, G.Thottappilly, G.Hahn, S.K.[Distribution and disease recovery of African cassava mosaic virus (ACMV) in stems of resistance and susceptible cassava]Distribution and disease recovery of African cassava mosaic virus (ACMV) in stems of resistance and susceptible cassava

The aim of the workshop is to collect information on traditional African processing technologies with emphasis on cassava as a livestock feed, to review the marketing and economics of cassava by-products, to recommend strategies for future research and development on the processing and utilizatio...


Hahn, S.K.Reynolds, L.Egbunike, G.N.[Cassava as livestock feed in Africa. Proceedings of a workshop]Cassava as livestock feed in Africa. Proceedings of a workshop

There were many reports of shoot removal on yield of tuberous in cassava. However very little plant physiology research has been done to verify the cause of such yield reduction. The objective of the study was to investigate the effects of time of first hoot removal on the growth and development ...

Ha diversos resultados sobre a influencia negative da remocao dos rebentos no remindimento das raizes tuberosas da mandioca.noentanto,mutio pouco tem sido feito para verificar as causas dessas reduces no rendimento. O objective deste estudo foi ode investigar o effeito da epoca em que a primeira ...

Il ya plusieurs rapports sur l'influence negative de la recolre desfeuiles sur le rendement en raciness tubereuses du manioc, pourtant, peu de recherché a ete effecruee sur la physiologie de la plante pour elucider la cause de chute de rendement. Les objectifs de cette etude etaient d'etudier les...


Simwambana, M.Ferguson, T.U.Hahn, S.K.[Morphological changes in cassava as affected by leaf vegetable picking]Morphological changes in cassava as affected by leaf vegetable picking

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