proceedings of the 7thTriennial sym ISTRC Benin Oct 1998.csv

1Realising the potentials of root crops in the 21st centry:modalities for sub-Saharan Africa.F.M.Quin20-26
2IPM of cassava in Africa in the 21st century (a light-hearted glimpse into my crystal ball).P.Neuenschwander27-34Cassava
3Promotion of cassava in semi-arid zones of sub-saharan African:status of cassava in northern Nigeria.E.B.Amans,M.Tshiunza,B.Ahmed,A.G.O.Dixon,M.Mahmud and M.Bokanga35-41Cassava
4Promotion of cassava utilization for improvement of food security and income generation in Tanzania:viability of processing cassava flour for biscuit production in Dar-es-Salaam.N.Mlingi,K.Mtunda,G.T.Ndunguru,A.Kiriwaggulu and N.M.Mahungu42-49Cassava
5Situation de la culture du manioc au Niger sur la base de donnes d`une enquete de 1997.Seyni Sirifi50-53
6Situation du manioc en zone semi-aride du Tchad.K.Mbayhoudel,K.Mbailao et M.Naitormbaide54-57
7Enhancing root crops production and utilization among Cameroon`s rural poor: lessons from Bonavada.J.M.Ngeve58-64
8Status of sweetpotato production,utilization,and marketing in Nigeria.O.O.Tewe,O.A.Abu,E.F.Ojeniyi and N.H.Nwokocha65-74Sweetpotato
9The dynamics of the root and tuber cropping systems in the middle belt of Nigeria.G.O.Olaniyan,V.M.Manyong and B.Oyewole75-81
10Cassava research in the Gambia:past,present and future strategiesC.S.Sonni George82-87Cassava
11Les acquis de la recherche sur le manioc a l`Institut des sciences agronomiques du Burundi: les technologies transf‚rables.E.Nizigiyimana88-92
12Igname au Burkina Faso: situation et voies de development.A.Tiendredeogo93-103
13Tuber and root information system (TRIS): an essential tool for research,planning and developmentR.Okechukwu,F.M.Quin,A.G.O.Dixon ad R.Asiedu104-109Cassava
14Gender implications for sustainable technology adoption.M.O.Ekop110-120
15Opportunties and constraints in the commercialization of cassava production and processing in KenyaA.O.Makokha121-125Cassava
16Processing and economics of production of lesser known cassava food products in south western Nigeria.E.T.Ojeniyi126-131Cassava
17Economics of potato production under irrigated and rainfed conditions in high altitude areas of Nigeria.G.N.Asumugha,J.C.Okonkwo and O.O.Okoli132-136Potato
18Ex-ante appraisal of strategies for cassava production and processing research and development in spatially separated but inter-linked markets.L.Muhammad,J.W.Kamau,B.A.Bugusu,C.KariukI.P.Ndolo,T.L.Munga and J.B.A.Whyte137-146Cassava
19Comp‚titivit‚ de I`igname au Nord de la C“te d`Ivoire:Concepts et m‚thodologies d`‚laboration des budgets de culture.J.Stessens and S.Doumbia147-155
20Farmers`perceptions of and actions on,resource management constraints,in the yam based systems of western Nigeria.V.M.Manyong,R.Asiedu and G.O.Olaniyan156-166Yam
21Comparative analysis of costs and returns in dry and wet season planted yams in Benue State Nigeria.B.O.Ugwu,T.O.Ezulike,G.C.Orkwor and E.C.Nwauzor167-173Yam
22African cassava trends and prospects for the 21st century.F.I Nweke174-194Cassava
23Socio-economic determinants of ginger (Zingiber officinale)surplus traded in Nigeria.G.N.Asumugha,F.I.Nweke,and J.E.Njoku195-197Ginger
24Nutrient balance model for desgin of sustainable yam cropping systems.R.J.Carsky,N.Wolo,V.M.Manyong and G.Tian198-208Yam
25Time of introduction and variety effects of cassava in intercropped upland rice/cassava in southestern Nigeria.J.E.G.Ikeorgu and C.Onwubuemeli209-211
26Evoluation de la fertilite d`un sol degrade sous differents systems de cultures en rotation.A.M.Toukourou212-216
27Response of a yam-maize-pepper intercrop to spatial arrangements.J.A.Manu-Aduening and K.Boa-Amponsem217-223
28Evaluation of new fertilizer formulations for seed yam production using minisett technique in yam/cassava/maize/melon intercrop in a highly degraded tropical rain forest soil of southeastern Nigeria.A.O.Olojede,A.C.Ohiri and G.O.Chukwu224-229
29Yams in the Tanzanian food and farming systems:implications for research and development.R.Kapinga,N.Wanyera,R.Asiedu,B.Chirimi and S.Kaare230-236Yam
30Integrated weed management of Panicum maximum in minisett cocoyam/maize intercrop in southern NigeriaT.Enyinnia237-240
31Cassava based farming systems in the semiarid zone:need for a change in agronomic practices.I.J.Ekanayake and U.C.Okarter241-245Cassava
32The domestication of yams (Dioscorea cayenensis-rotundata)in Benin.R.Dumont and P.Vernier246-248Yam
33Place du manioc dans les syst‚mes de production des zones semi-arides de I`Afrique centrale et occidentale.M.Tshiunza et A.G.Odixon249-255
34The potential of cocoyam production in Ghana.R.Sagoe,K.A.Marfo and A.A.Dankyi256-259Cocoyam
35Influence of shoot number per stand on growth and yield stability in cassava(Manihot esculenta).O.N.Eke-Okoro,O.U.Okereke and J.E.Okeke260-265Cassava
36Growth and root yield of cassava as influenced by time of intercropping with rice.A.Jalloh and M.T.Dahniya266-271
37 Climatic and growth stage influence on tuberous root yield cyanogenic potential,leaf water potential and leaf area duration of divergent cassava(Manihot esculenta Crantz)clones.C.M.Githunguri,J.A.Chweya,I.J.Ekanayake and A.G.O.Dixon272-279Cassava
38Seasonality and climatic period effects on crop evapotranspiration of sweetpotato.G.O.Chukwu280-283Sweetpotato
39Productivity and storage root quality of sweetpotato(Ipomoea batatas[L.]Lam) as influenced by the number of nodes per planted cutting.N.M.J.Tucker and M.T.Dahniya284-289Sweetpotato
40Field performance and reaction to weevils of improved and local sweetpotato genotypes in Cameroon.J.M.Ngeve290-296Sweetpotato
41Producing seed yams(Dioscorea rotundata) from sprouts.B.A.Aighewi,R.Asiedu and M.O.Akoroda297-299Yam
42Seed yam (Dioscorea rotundata Poir.) production,storage and quality in some yam zones of Nigeria.B.A.Aighewi,R.Asiedu and M.O.Akoroda300-303Yam
43Influence of tuber sett-weights on flowering in Dioscorea rotundata Poir.V.A.Chikaleke,R.Asiedu and C.A.Fatokun304-306Yam
44Influence of fertilizers on yield,storage,and food qualities of yams.M.O.Adeniji,G.O.Obigbesan,R.Asiedu and M.Bokanga307-310Yam
45Effect of time of introducing component crops on yield of cassava in a cassava/groundnut intercrop.J.Y.Asibuo and P.Osei-Bonus`311-313
46Improving the technology delivery mechanism: lessons from a pilot study on the diffusion of improved potato vartieties using a farmer based seed production system.C.Lung`aho,P.M.Kinyae,H.M.Kidane-mariam and P.Ewell314-321Potato
47Relative performance of cassava(Manihot esculenta Crantz) on the upland in Sierra Leone and Guinea.E.S.Bah,M.T.Dahniya,J.B.George and A.Jalloh322-329Cassava
48Effects of different seed tuber sizes on sprouting,emergence,haulm development and yield of potato(Solanum tuberosum L.) in the western highlands of Cameroom.I.Sprouting,emergence and haulm development.P.Demo,M.O.Akoroda,D.Njualem and S.F.Nana330-336Potato
49Effects of different seed tuber sizes on sprouting,emergence,haulm development and yield of potato(Solanum tuberosum L.) in the western highlands of Cameroom.2.Tuber yield and tuber size.P.Demo,M.O.Akoroda,D.Njualem and S.F.Nana337-342Potato
50Growth and productivity of long season cassava:efficacy of predictive models and systems research approach.I.J.Ekanayake and O.Lyasse343-350Cassava
51Diversit‚ enzymatique d`une collection d`iganames spontan‚es Dioscorea abyssinica Hoch.du B‚nin(Afrique de I`Ouest).S.Tostain et O.Dainou351-361
52Sweetpotato evaluation and selection for on-farm research.M.H.Nxumalo362-367Sweetpotato
53Statistical analysis of sweetpotato trials in different agroecological zones in Ghana using the additive main effects and multiplicative interaction(AMMI) model.J.A.Otoo,A.Missah,C.Osei,A.G.Carson,E.Okai.R.Sagoe and A.G.O.Dixon.368-367Sweetpotato
54Farmers evaluation of cassava varieties in the semi arid areas of Kenya.J.W.Kamau,J.M.Kinama,S.N.Nguluu,L.Muhammad,J.B.A.Whyte,S.M.Ragwa,E.N.Migwa and P.M.Simiyu368-383Cassava
55Evaluation of newly cassava low cyanide cassava varieties in different agroecozones of Nigeria.E.C.Nnodu and A.G.O.Dixon384-390Cassava
56Relating early growth traits to root productivity for cassava breeding schemes.M.O.Akoroda,A.G.O.Dixon and R.U.Okechukwu391-394Cassava
57Amelioration culturale de quelques especes d`ignames cultivees au Togo.K.Odah,A.Aidam,Y.Akogo and K.Tozo395-400
58Selection du manioc au Rwanda avant 1994 et etat actuel de la recherche.M.L.Rutikanga401-403
59Can yam domestication and participatory breeding be new ways to improve this crop and conserve its genetic resources?J.Berhaud,M.Bousalem,O.Da‹nou,J.Dubern,B.Malaurie and S.Tostain404-409Yam
60Performance of cassava genotypes at low,mid and highland altitude in Uganda.P.Ntawuruhunga,P.Rubaihayo,J.B.A.Whyte,D.S.O.Osiru and A.G.O.Dixon410-416Cassava
61Preferences and selection criteria of sweet potato varieties in rural and urban areas of Tanzania.D.Rees,R.Kapinga,S.Jeremiah and E.Rwiza417-423Sweetpotato
62Characterisation and conservation of yam biodiversity for sustainable use for food and agriculture in Benin Republic.A.Dansi,H.D.Mignouna,A.Sangare,J.Zoundjih‚kpon,R.Asiedu and F.M.Quin424-429Yam
63Genetic variability for vascular streaking in cassava.P.C.Ilona and A.G.O.Dixon430-433Cassava
64Flowering in yams(Dioscorea spp).C.N.Egesi,R.Asiedu and J.K.Egunjobi434-437Yam
65Combining ability analysis of field resistance in cassava to the African cassava mosaic disease.Y.Lokko,A.G.O.Dixon and S.K.Offei438-442Cassava
66Genetic diversity among Nigerian cassava landraces resistant to cassava mosaic disease and cassava green mite.A.A.Raji,A.G.O.Dixon and T.A.O.Ladeinde443-453Cassava
67Evaluating sweetpotato landraces of Western Kenya.P.J.Ndolo,E.E.Carey,J.Malinga and S.T.Gichuki454-458Sweetpotato
68Potato variety development in the IRAD-CIP potato project in Cameroon.J.T.Koi,H.A.Mendoza,D.Njualem,P.Demo,V.Deffo and S.F.Nana459-465Potato
69Evalutation of twelve potato varieties in the north-western highlands of Cameroon.D.Njualem,H.A.Mendoza,J.T.Koi,P.Demo,V.Deffo and F.S.Nana466-470Potato
70Participatory research in sweetpotato variety evaluation and selection for the diverse environments of the Lake Zone of Tanzania.R.Kapinga, Steenhuijsen Piters,W.Heemskerk,M.Mutalemwa,J.Kabissa N.B.Chirimi and P.Kapingu471Sweetpotato
71Effect of age on in vitro culture post flask management of the three Dioscorea species.M.D.Ashun and E.Acheampong472-477Yam
72Sequence diversity in the coat protein gene and 3`untranslated region of yam mosaic poty virus isolates infecting D.alata,D.cayenensis-D.rotundata and D.trifida.M.Bousalem,D.Fargette,A.Pineli,J.Dubern and J.Berthaud478-479Yam
73A highly sensitive IC-RT-PCR test for the detection of yam mosaic poty virus in both leaves and tubers of yam species.S.Dallot M.Bousalem and B.Malaurie480-482Yam
74In vitro propagation of frafra potato(Coleus dysenterieus).E.Acheampong and B.Ashante483-484Potato
75Etudes cytogenetiques et florales des ignames Africaines D.cayenensis-D.rotundata,pour les fecondations in vitro.J.Zoundjih‚kpon,A.Dansi,S.Doukour‚,N.Ahoussou,A.M.Kouakou,H.Sanou,J.Saou,K.M.Kouassi and J.D.Zongo.485-489Yam
76Incidence and severity of cassava anthracnose disease at different ecological zones in Ghana.J.N.L.Lamptey,O.A.Danquah,O.O.Okoli,P.P.Frimpong-Manso,C.Osei and E.Moses490-493Cassava
77Increasing the availability of disease-free potato seed tubers to smallhold farmers in Kenya.Z.M.Kinyua,J.J.Smith,G.I.oduor and J.N.Wachira494-498Potato
78Feeding preference of Typhlodromalus aripo(Acari:Phytoseiidae) for Mononychellus tanajoa(Acari:Tetranychidae)infected by Neozygites floridana(Zygomycetes:Entomophthorales).S.L.Ariori and S.K.Dara499-502
79Seasonal incidence of two fungal pathogens,Neozygites floridana( Zygomycotina: Zygomycetes:and Hirsutella thompsonii(Deuteromycotina;Hyphomycetes),in mite populations on cassava in Benin.S.K.Dara,C.J.Lomer,F.C.C.Hountondji and J.S.Yaninek503-507
80Integration of host resistance,cultural methods and fungicidal spray for the management of late blight of potatoes in Uganda.P.Kankwatsa,E.Adipala,J.J.Hakiza and H.M.Kidanemariam508-512Potato
81Preliminary investigation on the effects of dipping scale insect-infected ginger rhizome in local plant extracts.J.K.U.Emehute513-515Ginger
82Effect of preceding crop,variety and post emergence cultivation (hilling) on the incidence of bacterial wilt.B.Kassa and B.Lemaga516-524
83Evidence of double infection and random occurrence of cassava begomoviruses in sub-Sahara Africa.F.O.Ogbe,G.I.Atiri,G.Thottappilly,A.G.O.Dixon,H.D.Mignouna and F.M.Quin.525-528Cassava
84The current situation on the establishment of Typhlodromalus aripo DeLeon in Kenya.C.W.Kariuki,B.M.Ngari and T.M.Kusewa529-533
85Yam diseases in northern Ghana.S.K.Nutsugah,F.K.Tsigbey,J.Peters and C.Osei534-540Yam
86Relative resistance of some newly developed cassava cultivars to African Cassava Mosaic Disease.O.A.Ariyo,A.G.O.Dixon and G.I.Atiri.541-544Cassava
87Nematode problems and solutions of root and tuber crops in Nigeria.E.C.Nwauzor545-552
88Adavances in research on severe cassava mosaic epidemic in UgandaG.W.Otim-Nape,J.Legg,J.M.thresh and T.Alica.553-558Cassava
89Release of the entomopathogenic fungus,Neozygites floridana(Zygomycetes:Entomophthorales) for control of the casava green mite,Mononychellus tanajoa(Acari:Tetranychidae):an in vivo approach.S.K.Dara,C.J.Lomer, and F.C.C.Hountondji559-561Cassava
90Effect of cassava bacterial blight on cassava root yield in different ecozones and influence of the environment on symptom development.K.Wydra,A.Fanou,A.G.O.Dixon and K.Rudolph562-568Cassava
91Studies on the survival mode of Xanthomonas campestris pv.manihotis and the dissemination of cassava bacterial blight through weeds plant debris and an insect vector.A.Fanou,K.Wydra,M.Zandjanakou,P.LeGall and K.Rudolph569-574Cassava
92Culturing Scutellonema bradys on yam tuber slices.C.Kwoseh,R.A.Plowright,J.Stanfield and R.Asiedu575-576Yam
93Histopathology of cassava infected by Xanthomonas campestris pv.manihotis:defense reactions.K.E.Kpemoua,B.Boher and M.Nicole577-579Cassava
94Whiteflies and associated viruses on sweetpotato in Uganda:prevalence,distribution and importance.V.Aritua,J.Legg,P.Sseruwagi,N.E.J.M.Smit and R.W.Gibson580-585Sweetpotato
95Facilitating safe movement of yam (Dioscorea spp.)germplasm.Current knowledge,facilities,cost,and international collaboration.B.Malaurie,M.Bousalem,Jean Dubern and Julien Berthaud586-594Yam
96Utilisation du "manipueira"comme pesticide biologique contre les cochenilles du manioc du genre Phenacoccus manihoti.C.Razafindrakoto595--599
97Host resistance as a potential component for integrated management of late blight in East Africa highland tropics.P.S.Ojiambo,C.Lung`aho,J.K.Karinga and H.M.Kidanemariam601-607
98The role of Bemisia tabaci (Gennadius) in the epidemiology of the current cassava mosaic virus disease epidemic in Uganda:vector population dynamic and epidemic progress.C.A.Omongo,J.Colvin,G.W.Otim-Nape,J.M.Thresh and R.J.Cooter608-612Cassava
99Characterization and Colletotrichum gloeosporioides Penz.from yams (Dioscorea spp.) in Nigeria.M.M.Abang,K.R.Green,N..Wanyera and C.Iloba613-614Yam
100Virus diseases of sweetpotato and cassava in the Lake Zone of Tanzania.S.C.Jeremiah,R.W.Gibson and R.P.Msabaha615-619Sweetpotato
101Perspectives for large scale distribution of nematode disinfested yam planting material in southern Nigeria.J.C.Meerman and P.R.Speijer.620-621Yam
102Influence du potentiel cyanogenique des feuilles de manioc sur l`abondance et les d‚gƒts de l`acarien vert.N.G.Maroya622-630
103Yam viruses of Nigeria.B.O.Odu,S.A.Shoyinka,J.d`A.Hughes,R.Asiedu and O.A.Oladiran631-633Yam
104Control of the yam nematode (Scutellonena bradys) with neem fruit powder.J.I.Onalo,R.Asiedu and S.O.Adesiyan634-636Yam
105Pratylenchus,the dominant genus affecting yam (Dioscorea spp.) in Uganda.J.Mudiope,P.R.Speijer,N.R.Maslen and E.Adipala.637-638Yam
106Plant parasitic nematodes associated with soils,intercrops and tubers of yam in Ghana.A.Missah and J.C.Peters639-644Yam
107Integrated control of sweetpotato weevil,Cylas puncticollis (Boh) in southeastern Nigeria.T.O.Ezulike,S.C.Anoike and S.O.Odurukwe645-647Sweetpotato
108Reactions of elite cassava genotypes to root rot disease and the role of different micro-organisms.T.J.Onyeka,A.G.O.Dixon,T.Ikotun and K.Wydra648-651Cassava
109Three new isometric viruses infecting yams in Nigeria.L.N.Dongo,J.d`A.Hughes and G.I.Atiri652-654Yam
110Post harvest technology for root crops:gender implications and strategies for the 21st century.J.A.S.Haleegoah655-660
111Effect of varying stages of harvest on tuber yield,dry matter,starch and harvest index of cassava in two ecological zones in Nigeria.M.Ngendahayo and A.G.O.Dixon661-666Cassava
112Developing value-added markets for cassava in East and Southern Africa.R.S.B.Ferris,G.Ntibarikure,S.Kolijn and A.K.Muganga667-681Cassava
113Etude de l`am‚lioration du stockage traditionnel de l`igname en Cote d`Ivoire:‚valuation economique des m‚thodes am‚lior‚es de conservation et d‚cision des producteurs.D.Dao682-685
114Use of African cassava varieties in Benin for producing sour starch:a traditional latin-American baking product.C.Brabet,N.Bricas,J.Hounhouigan,M.Nago and A.L.Wack686-693Cassava
115Investigating the potential for vertical integration of primary casava flour producers with secondary confectionery processors in Uganda.R.M.Gensi,M.Bokanga,A.Nayiga and R.S.B. Ferris694-698Cassava
116Development of sweetpotato snack products in rural areas:case study of Lira district of Uganda.C.Owori699-707Sweetpotato
117Dietary exposure to cassava cyanogens and the development of tropical ataxic polyneuropathy.O.S.A.Oluwole,A.O.Onabolu and H.Rosling708-710Cassava
118The dynamics of the accumulation of cyanogenic glucosides in cassava during its growth cycle.Y.Chukwumah and M.Bokanga711-718Cassava
119L`enrichissement proteine du manioc par fermentation fongique.D.Nkeshimana719-722
120Agro-ecological determinants of cassava root taste and cyanogenic glucoside content: preliminary findings.J.Mkumbira,L.Chiwona-Karltun,J.Saka,A.R.K.Mhone,N.M.Mahungu,M.Bokanga,L.Brimer,H.Rosling and U.Gullberg723-729Cassava
121Relative cost of using cassava as a substitute for maize in poultry feed production.O.C.Aniedu and D.N.Udozuwe730-734Cassava
122Impact of the high quality cassava flour technology in Nigeria.A.B.Abass,A.O.Onabolu and M.Bokanga735-740Cassava
123Variation within Lactobacillus plantarum concerning the degradation of cyanogenic glycosides(e.g.linamarin) in plant tissues.Towards better starter cultures.Vicki Lei,Mogens Jakobsen and Leon Brimer741
124Production of ethanol from cassava in Nigeria.O.T.Bamikole and M.O.Bokanga.742-743Cassava
125Effect of waxing on the food quality of yam (Dioscorea spp.) tubers in storage.A.U.Achidi,O.Ojeba and M.Bokanga744-747Yam
126Increasing vitamin A intake through promotion of orange-fleshed sweetpotatoes in western Kenya:a women centered approach.M.A.Oyunga,V.Hagenimana,K.Kurz and J.Low748-754Sweetpotato
127Screening cassava varieties for the linamarin-synthesizing enzyme complex activitity.I.Dossou-Yovo,Y.Chukwumah and M.Bokanga755-758Cassava
128Analyse comparee de la production d`igname pour la transformation en cossette au Benin,Nigeria et Togp:un exemple de sedentarisation de la culture de l`igname.P.Vernier,K.E.N`Kpenu and G.C.Orkwor759
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