proceedings of the SixthTriennial sym ISTRC Oct 1995.csv

1Opening/Welcome addresses17-20
2keynote address21-23
3Cassava:Africa`s cinderella cropN.D.Hahn24-27Cassava
4Cassava and sweet potatoes for poverty alleviation in MalawiA.S.Kumwenda28-30
5PROAMYL (Promotion des amylaces tropicaux);acquis du CIRAD et de I`ORSTOMD.Griffon et C.Brabet31-37
6Transfer of root crop technology for alleviation of poverty;the contribution of Shell,NigeriaP.I.Osagie38-41
7Strategies for enhancing the availability of roots crops planting material to smallholder farmers in MalawiJ.H.Luhanga42-43
8Diseases and nematodes of cassava and sweet potato in MalawiA.T.Daudi44-46
9Traning for root and tuber crop research and production in AfricaM.T.Ajayi,J.L.Gulley and I.R.Obubo47-50
10Multiplication and distribution of cassava and sweet potato planting material.lessons from Malawi and implications for the regionJ.Mkumbira51-54
11ODA`s crop post-harvest research programme in Africa-a revised strategy for sustainable developmentN.Poulter55-56
12The potential role of root crops in SwazilandM.H.Nxumalo57-61
13Techniques and methodologies of cassava and sweet potato multiplicationI.R.M.Benesi,P.J.Mtambalika and J.Mkumbira62-64
14Inter-relationships between yield components and cyanogenic potential and their influence on selectionB.W.Khizzah,J.B.A.Whyte and R.Van der Grift65-68
15Experience faite par le centre national de technologies alimentaires en conception,adaptation et fabrication de petits equipements alimentairesZ.Irabahaye69-73
16Artisinal production of maltoseJ.E.Cecil74-75
17Dry matter production and partitioning in cassava (Manihot esculenta) intercropped with maize or groundnutsD.S.O.Osiru and S.K.Hahn76
18The use of needs assessment methodologies to focus technical interventions in root and tuber crop post-harvest systems:a case study to improve the marketing and post-harvest handling of cassava entering Dar-es-Salaam,TanzaniaG.T.Ndunguru,F.Modaha,R.D.Bancroft,P.D.Digges,U.Kleih,A.Westby and F.Mashamba76-82Cassava
19Yam-soya bean intercropping in the guinea savanna zone of north GhanaA.Y.Alhassan83-84
20Potentials of root crop residues for livestock feeding in tropical AfricaO.O.Tewe85-87
21SARRNET:cassava and sweet potato network for mitigation against drought and for food security in SADC regionJ.M. Teri,I.J.Minde,J.Mkumbira & S.Sam88-94
22Cassava and sweet potato processing and utilization in TanzaniaA.Kapande,R.Kapinga and E.Rwiza95-101
23The role of root crops in poverty alleviation in AfricaF.Nweke102-109
24Collaborative study of cassava in Africa;some findings in MalawiJ.Mkumbira110-112Cassava
25Cassava processing as a determinant of commercialization and farmers` varietal requirements in GhanaJ.A.Otoo,R.Al-Hassan,A.F.K.Kissiedu and A.Y.Alhassan113-114Cassava
26Quelques causes du faible rendement du manioc en racines tubereuses au ZaireD.Lutete,M.Bidiaka et K.Landu115-117
27Some determinants of cassava yield in NigeriaO.Ajobo and B.O.Ugwu118-120Cassava
28Comparative study of production labor for selected tropical food crops(cassava,yam,maize and upland rice)M.Tshiunza121-125
29The viruses and virus diseases of cassava in Africa:what is the magnitude of the problem?J.M.Thresh,G.W.Otim-Nape and D.Fargette126-129Cassava
30Biological control as an integrated pest management(IPM) strategy to control caassava mealybug(Phenacoccus manihoti)Matile-ferrero(Hemiptera: Pseudococcidae)and cassava green mite(Mono-nychellus tanajoa)(Bondar)(Acari:tetranichidae) in Zambia.M.K.Sakala,J.Chakupurakal,C.Malambo,M.Mebelo and S.Kunda130-135Cassava
31Identification and characterization of Fusarium spp.associated with cassava chipsW.Msikita,J.S.Yaninek,J.Green,M.Ahounou,R.Fagbemissi and F.Hountondji136-139Cassava
32A survey of weeds of cassava(Manihot esculenta Crantz)in Salima district in central MalawiB.C.Munthali140-142Cassava
33Description d`une methode d`evaluation du pouvoir pathogene des isolats de Armillaria heimii,agent pathogene du pourridie du maniocC.Makambila et V.U.Loubacky143-145
34The pathogenicity of Neozygites cf.Floridana(Zygomycetes:entmophthorales) to the cassava green mite,Mononychellus tanajoa(Acari: tetranychidae)G.I.Oduor,J.S.Yanineke and Moraes146-149Cassava
35Effect of soil fertility and planting time on the incidence of cassava green mite (CGM (Mononychellus tanajoa Bondar)M.Gethi and A.S.Aziz150-152Cassava
36Outbreak of a new tuberous root mealybug(Stictococcus vaysierier)(Homoptera:Stictococcidae)of cassava(Manihot esculenta Crantz) in CameroonJ.M.Ngeve153-156Cassava
37Rate of re-infection and prospects for control of African cassava mosaic disease in Southern Africa.A.Muimba-Kankolongo,J.M.Teri,N.M.Mahungu,M.C.M.Porto,C.Jerico,J.Mukumbira,A.Zacaria and E.Kanju157-162Cassava
38Characterization of isolates of Colletotrichum gloeosporioides Penz.f.sp.manihotis from susceptible cassava cultivars in CameroonD.N.Akonumbo and J.M.Ngeve163-166Cassava
39Importance de l`acariose et m‚canismes de r‚sistance des diff‚rentes vari‚t‚s de manioc contre l`acarien vert.P.Ndayiragije167-175
40The role of amino acids in field resistance of cassava to green spider mite(Mononychellus tanajoa Bondar)E.N.Nukenine,A.T.Hassan and A.G.O.Dixon176-182Cassava
41Rhizosphere microorganisms of cassava and their effects on plant healthA.F.Sanusi and T.Ikotun183-189Cassava
42Mycorrhizal inoculation and mulching applications for continuous cassava production in alley cropping systemsO.Osonubi,I.E.Okon,O.Fagbola and I.J.Ekanayake190-193Cassava
43Performance in three agroecologies of virus-tested cassava genotypes derived from meristem cultureA.Akano,S.Ng R.Asiedu and G.Atiri194-197Cassava
44An overview of the present situation of cassava diseases in West AfricaK.Wydra and W.Msikita198-206Cassava
45Evaluation of newly improved cassava varieties for Nigeria ecologiesE.C Nnodu,J.E.Okeke and A.G.O.Dixon207-215Cassava
46Genotype x environment interaction and stability analysis of 10 cassava genotypes evaluated in GhanaR.Sagoe,J.E.Otoo,A.F.K.Kissiedu,J.J.Afuakwa,A.A.Asare-Bediako,E.Okai,O.O.Okoli and A.G.O.Dixon216-219Cassava
47A linkage map of cassava(Manihot esculenta Crantz):a genetic tool for the enhancement of virus resistance and culinary qualities of cassavaM.Fregene,M.Bonierbale,F.Angel,R.Gomez,F.Rodriguez,M.Maya,J.Tohme,C.Iglesias,W.Roca,A.G.O.Dixon,G.Thottappilly and M.Quin220-227Cassava
48Les ressources phytogenetiques sur le manioc en republique du Benin:collecte,conservation et utilisationA.O.Sanni228-230
49Yield evaluation of cassava clones in Ghana using additive main effects and multiplicative interaction effects(AMMI) modelE.Okai.A.F.K.Kissiedu,J.A.Otoo,J.J.Afuakwa,A.Asare-Bediako,A.Missah,R.Sagoe,O.O.Okoil and A.G.O.Dixon231-235Cassava
50Diversity of cassava germplasm and morphological characterization in MalawiJ.C.Ngoma,N.M. Mahungu,J.Mkumbira and K.L.Salipira236Cassava
51Genotype stability analysis and its application to cassava regional trialsH.Ojulong,A.G.O.Dixon,P.Ntawuruhunga and G.Ssemakula237-241Cassava
52Genetic Variability among cassava genotypes and its growth performance over timeP.Ntawuruhunga H.Ojulong and A.G.O.Dixon242-248Cassava
53Characterization morphologique des clones de manioc cultivars en Afrique de l`ouest et du centre(B‚nin,Ghana,Nig‚ria et Cameroun)N.G.Maroya,K.Aihou,K.A.Okeleye,E.Dosoo and A.Tumanteh249-254
54Genotype x environment interaction,phenotypic stability of cassava yields,and heritability estimates for production and pestd resistance triats in Nigeria .R.E.C.Mba and A.G.O. Dixon255-261Cassava
55Correlation studies among yield and various stability parameters and an enlarged rank-sum method for identifying high stable cassava clonesR.E.C.Mba and A.G.O. Dixon261-265Cassava
56Am‚lioration des cultivars africains de maniocJ.Mabanza et J.M.Mingui266-269
57Les cultivars Africains de maniocJ.Mabanza et J.M.Mingui270
58Sustainable root yields and cassava breeding in AfricaM.O.Akoroda271-276Cassava
59Systeme traditionnel de transformation et utilization du manioc en milieu rural au TChadK.L.Mbailao and M.Koumaro277-278
60Biochemical studies of cassava root post-harvest physiological deteriorationG.M.O`Brien,J.E.Mayer,A.L.Chavez,O.Orozco,C.C.Wheatley and J.E.Wenham279-282Cassava
61Processing of cassava and quality of reconstituted miondo,bobolo and mintumbaG.Tiky-Mpondo and N.Mvondo283-286Cassava
62Quantitative separation of the products of the reaction of cyancide toxicity researchP.N.Okoh and H.Rosling287-289
63The importance of cassava as sustenance for Ibadan small-scale gari processorsM.O.Sanni,A.O.Sobamiwa,H.Rosling and C.M.Eyinla290-292Cassava
64The promotion of cassava as a food industry:case study in NigeriaA.O.Onabolu and M.Bokanga293-295Cassava
65An improved acid-hydrolysis method for the determination of total cyanogens in cassavaA.R.K.Mhone and J.D.K.Saka296-299Cassava
66The human health benefits of research to reduce the hydrogen cyanide potential in cassava cultivars in AfricaG.Lubulwa300-312Cassava
67Reasons for use of "bitter" cassava-a priority in cassava production in MalawiL.Chiwona-Karltun,T.Tylleskar,H.Rosling,J.Ngoma,N.M.Mahungu and J.Saka313-314Cassava
68Cassava processing and dietary cyanide exposure in TanzaniaN.V.Mlingi315-318Cassava
69Economics of biological control of the cassava mealybug Phenacoccus manihoti(Mat-Ferr.)(Hom.,Pseudococcidae) in AfricaR.P.Schaab,P.Neuenschwander,J.Zeddies and H.R.Herren319-327Cassava
70Cassava and wheat consumption in Africa: new opportunities for cassava in the 21st centuryL.H.Ouraga-Djoussou and M.Bokanga328-332Cassava
71A socio-economic study of the adoption and sustainability of improved cassava varieties among resource-poor farmers in south-eastern forest zone of NigeriaC.C.Chinaka,D.O.Chikwendu and G.N.Asumugha333-336Cassava
72The national cassava develoment project of Zimbabwe (NCDP)D.Kwenda337-341Cassava
73Farmers participatory evalution of post harvest aspect of elite clones in MalawiK.L.Salipira,D.R.Kalua and J.Mkumbira342
74An update of Cassava Program in KenyaJ.W.Kamau,P.J.Ndolo,A.Mambiri,C.M.Githunguri,S.T.Gichuki,B.A.Bugusu,F.Omari and F.Kusewa.343-346Cassava
75Yield of cassava varieties in two agro-ecological zones in coastal region of KenyaT.L.Munga and S.T.Gichuki347-348Cassava
76Effects of location and age at harvest on yield and culinary qualities of cassava(Manihot esculenta Crantz)J.M.Ngeve349-352Cassava
77Relative effectiveness of sweet potato,melon and pumpkin as live-mulch in cassavaM.T.Dahniya and A.Jalloh`353-355
78The effect of time of intercropping cassava with rice on dry matter partitioning in cassava and total productivity of the intercropsM.T.Dahniya and A.Jalloh356-358Cassava
79Influence of storage of cassava planting material on subsequent plant growth and vigor: a preliminary analysisP.Bieler,I.J.Ekanayake and I.N.Kasele359Cassava
80Early vegetative growth response of four improved cassava(Manihot esculenta Crantz)clones to varying temperature regimesS.O.Akparobi,I.J.Ekanayake and M.O.Akoroda360-365Cassava
81Association among leaf area index,crop growth rate and dry matter partitioning of six cassava genotypes in three diverse agro-ecological zones of NigeriaC.M.Githunguri,I.J.Ekanayake,A.G.O.Dixon and J.A.Chweya366-374Cassava
82Growth and yield of three cassava cultivars in an inland valley swamp in Sierra LeoneJ.B.George,M.T.Lahai,M.T.Dahniya and I.J.Ekanayake.375-381Cassava
83Growth rates and yield of three cassava clones on the Njala gravelly upland soils in Sierra LeoneJ.B.George,M.T.Lahai,M.T.Dahniya and I.J.Ekanayake.382-387Cassava
84Influence of planting season on incidence and severity of African cassava mosaic disease in the sub humid zone of NigeriaE.Okogbenin,M.C.M.Porto and A.G.O. Dixon.388-392Cassava
85Evaluation of cowpea varieties for intercropping with cassava in southeast NigeriaJ.E.G.Ikeorgu,O.N.Eke-Okoro and S.O.Odurukwe393-394Cassava
86Effect of selection of planting materials on performance of cassava in the dry savannasE.Okogbenin, M.C.M.Porto , C.Iglesias and .J.Ekanayake395-399Cassava
87Forage value of cassava foliage:effects of spacing and interval of cutting on yieldsC.Ebong,Y.K.Baguma,P.Lusembo and J.Kigongo400-401Cassava
88Dry season dust alters photosynthetic characteristics of field grown cassava during the dry season into two agroecozones of NigeriaI.J.Ekanayake,U.C.Okarter and M.T.V.Adeleke402Cassava
89Preliminary investigations on photosynthetic capacity and nutrient uptake of polyploid cassava(Manihot esculenta Crantz)I.N.Kasele, I.J.Ekanayake and A.G.O.Dixon403Cassava
90Cassava biotechnology network,uptake to the ISTRC/AB:network activities and scientific progressA.M.Thro404-408Cassava
91Potential of seed storage for long-term conservation of yam germplasmI.O.Daniel,N.Q.Ng and T.O.Tayo409-411Yam
92Importance of Rhizoctonia solani as a pathogen of yam(Dioscorea spp.) in NigeriaT.E.Sangoyomi and N.A.Amusa412-417Yam
93La production et l`utilisation de cossettes d`igname(D.cayenensis-rotundata)au Benin: situation actuelle et perspectivesP.Vernier et R.Dumont et P.Zohouri418-423
94Am‚lioration des systems traditionnels de conservation de l`ignameA.M.Kouakou,R.Dumont et P.Zohouri424-425
95S‚lection au sein du groupe d`ignames Krengl‚(Dioscorea cayenensis-rotundata)G.Tokpa et R.Dumont426-428Yam
96Molecular taxonomy of Guinea yams and their wild relativesH.D.Mignouna,R.Asiedu and G.Thottappilly429Yam
97Les determinants agro-ecologiques et socio-economiques de la production et de l`offre en igname en Cote d`IvoireP.S.Doumbia430-434
98Acclimatization of in vitro yam plantlets:transition from tubes to fieldS.Y.C.Ng and R.Asiedu435-438Yam
99Distribution and severity of foliar diseases of yam (Dioscorea spp.) in NigeriaK.R.Green439-444Yam
100Preliminary studies of seed yam production from minisetts with different thickness of cortex parenchyma in white yam (Dioscorea rotundata)B.A.Aighewi,M.O.Akoroda and R.Asiedu445-447Yam
101Potential use of aerial tubers for water yam germplasm conservation and productionN.Q.Ng448-449Yam
102Assessment of the potential for sweet-potato processed product (dough nuts) for diversified utilisation of sweet potatoes in UgandaC.Owori and V.Hagenimana450-452Sweet-potato
103Effect of host resistance and application of cow manure on yield of sweetpotato weevil damageM.J.Muhanna and W.W.Collins453-456Sweet-potato
104Sweet potato virus in Uganda and Kenya: results of a surveyE.E.carey,S.T.Gichuki,R.O.M.Mwanga,S.Kasule,S.Fuentes,C.Macharia and R.Gibson457-460Sweet-potato
105Evaluation of sweetpotato seedling progenies in Kenya,Uganda and Tanzania E.E.carey,S.T.Gichuki,R.O.M.Mwanga,R.Kapinga,P.J.Ndolo and J.W.Kamau461-465Sweet-potato
106Evaluation of sweetpotato storage roots for storability at room temperature in KenyaA.W.Kihurani .S.T.Gichuki and E.E Carey466-467Sweet-potato
107Chingovwa:a sweet potato variety,emerging as a cash crop in North-Western ZambiaR.Namposya468-470Sweet-potato
108Multilocational testing of sweet potato clones in KenyaE.E.carey,S.T.Gichuki,P.J.Ndolo J.Ngungi,J.W.Irungu D.K.Maina and J.W.Kamau471-474Sweet-potato
109The effect of watering frequencey on sweet potato fresh vine yield in the lowland and upland(Ipomea batatas Lam.)D.C.Chitundu475-478Sweet-potato
110Survey on storage pest complex of dried sweet potato chips in UgandaJ.Ambrose-Agona479-482Sweet-potato
111Sweet potato consumption and utilization in major sweet potato growing districts of UgandaR.O.M.Mwanga,C.O.P`Obwoya,B.Bashaasha and P.T.Ewell483-489Sweet-potato
112Consumer acceptance of boiled sweet potato clones in KenyaJ.N.Maling`a,P.J.Ndolo,S.T.Gichuki,V.Hagenimana,E.Carey and G.Maisiba490-493Sweet-potato
113Processing characteristics of promising sweet potato clones in KenyaJ.N.Maling`a,,S.T.Gichuki,V.Hagenimana,E.Carey and M.A.Oyunga494-497Sweet-potato
114Oil content in fried sweet potato processed productsV.Hagenimana and M.A.Oyuunga498-501Sweet-potato
115The performance of sweet potato(Ipomea batatas L.) and common bean (Phaseolus vulgaris)under the traditional intercropping system in the lowland areas of UgandaC.Ocitti-P`Obwoya502-511Sweet-potato
116Postharvest losses and the potential of the pit storage of sweet potato(Ipomea batatas)in MalawiH.F.Mbeza and M.Kwapata508-511Sweet-potato
117Women`s role in local sweet potato crisps processing in Nairobi-KenyaR.W.Gatumbi and V.Hagenimana512-514Sweet-potato
118Determinants of sweet potato commercialization in south Nyanza,KenyaJ.W.Low515-523Sweet-potato
119Storability of sweet potatoes (Ipomoea batatas) under traditional Malawian conditionsS.C.M.Munthali524-527Sweet-potato
120Sweet potato in Tanzanian farming and food systemsR.E.Kapinga,S.C.Jeremiah,R.Kileo and P.T.Ewell528-534Sweet-potato
121Nutrient disorders of sweet potato and taro:advances in diagnosis and correction in the PacificJ.N.O`Sullivan,C.J.Asher,F.P.C.Blamey,S.Halavatau and L.G.G.Yapa535-541Sweet-potato
122Performance in Ghana (West Africa) of sweetpotato varieties bred and selected in East and Southern Africa environmentsJ.A.Otoo,A.Missah,A.F.K.Kissiedu,J.J.Afuakwa,J.Adu-Mensah,A.K.Danso,E.Okai,A.Asare-Bediako and R.Sagoe542-544Sweet-potato
123Genetic diversity and germplasm maintenance of cocoyam Xanthosoma sagittifolium(L.)SchottA.Agueguia545-550Cocoyam
124Yield of potato as influenced by crop resistance,sanitation and fungicidal treatments against late blightD.A.Fontem551-554Potato
125Advances in potato research in eastern and central AfricaN.B.Lutaladio,P.T.Ewell and H.Kidanemariam555-560Potato
126Performance de trois nouvelles vari‚t‚s de pomme de terre,Solanum tuberosum L.dans le kivu montagneux,a l`est du ZaireT.Mutombo,P.Phemba,N.Feruzi et N.B.Lutaladio561-565
127Transfer of potato production and storage technologies:an experience of the central zones of EthiopiaG.Weldegiorgis,E.Zerfu and B.Lemaga566-568Potato
128Resistance of some promising potato clones to potao leafroll virus(PLRV) and its vectors Myzus persicae Sul.and Macrosiphum euphorbiae Thom.H.K.Were,R.D.Narla,J.H.Nderitu and H.M.Kidanemariam569-574Potato
129Evalution of promising potato clones under seed and ware storage conditions at Tigoni,KenyaA.Walingo,J.N.Kabira,H.M.Kidanemariam and P.T.Ewell575-578Potato
130Seedling tuber yield as affected by density of plants grown from true potato seed(TPS) during two contrasting seasonsB.T.Tuku,P.C.Struik and H.Kidanemariam579-583Potato
131The effect of seed tuber sizes derived from TPS on yield of ware potatoes(Solanum tuberosum L.)A.Gebremariam,J.A.Chweya and H.M.Kidanemariam584-586Potato
132Adaptability trial of potato advanced clones in the north rift valley province of KenyaC.M.Lusweti,J.W.Nandasaba and H.M.Kidanemarian587-591Potato
133Breeding for quality and quantity592-594
134Closing Speech595
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