Hahn, S. K.    

Firstname:S. K. 
Surname:Hahn 
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Institute:IITA 
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144 publications (0 read)





Publications as Author



2008

Cassava improvement in sub-Saharan Africa: contributions of IITA and its partners, Dixon, A., Okechukwu, R., Ssemakula, G., Hanna, R., Thresh, J. M., Hughes, J., Ingelbrecht, I., Fregene, M.*, Legg, J., Mahungu, N., Nweke, F., Ntawuruhunga, P., Fauquet, C., Manyong, V., Neuenschwander, P., Whyte, J., Wydra, K., Asiedu, R., Egesi, C. N.*, Bandyopadhyay, R., Winter, S., Tarawali, G., Bokanga, M., Ezedinma, C., Sanni, L., Ferguson, M., Ogbe, F., Akoroda, M., Maziya-Dixon, B., Ilona, P., Ekanayake, I. J., Ariyo, O., Onyeka, J.*, Otim-Nape, G.*, Dahniya, M. T., Ortiz, R., Hahn, S. K. and Hartmann, P., 2008.
 

2003

Development and evaluation of hybrid yams (Dioscorea rotundata Poir.) in pre-release multilocational trials in Nigeria, Orkwor, G. C., Asiedu, R., Hahn, S. K., Surma, D., Udensi, U. and Chukwu, G. O., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 353-355, 2003.
 

1997

Traditional processing and utilization of cassava in Africa: IITA research guide, No. 41, Hahn, S. K., IITA research guide, No. 41, ISBN 978-131-115-0, 1997.
 

1996

Susceptibility of yam cultivars to minisett rot pathogens, Osai, E. O., Ikotun, T.*, Asiedu, R. and Hahn, S. K., in: Tropical Science, volume 36, pages 201-205, 1996.
 
Morphological changes in cassava as affected by leaf vegetable picking, Simwambana, M.*, Hahn, S. K. and Ferguson, T. U., in: Roots Newsletter, volume 3, number 1, pages 4-8, 1996.
 

1995

Production of yams: present role and future prospects: IITA research guide, No. 46, Hahn, S. K., Osiru, D., Akoroda, M. and Otoo, J., IITA research guide, No. 46, International Institute of Tropical Agriculture (IITA), 1995.
 

1994

Genotype x environment interaction studies with cassava, Otoo, J., Dixon, A., Asiedu, R., Okeke, J. E., Maroya, N., Tougnon, K., Okoli, O., Tetteh, J. P. and Hahn, S. K., in: Acta Horticulturae, volume 380, pages 146-148, ISSN 0567-7572, 1994.
 
Genotype environment interaction studies with cassava, Otoo, J., Dixon, A., Asiedu, R., Okeke, J. E., Maroya, N., Tougnon, K., Okoli, O., Tetteh, J. P. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 10-16 October 1991, Accra, Ghana, pages 146-148, International Society for Tropical Root Crops, 1994.
 
Effect of time to first shoot removal and the amount of shoots removed on the yield and quality of cassava leaves and tubers, Simwambana, M.*, Ferguson, T. U., Osiru, D.* and Hahn, S. K., in: Tropical Agriculture, volume 71, number 1, pages 41-48, 1994.
 
Response of yam (Dioscorea rotundata Poir.) to various periods of weed interference in an intercropping with maize (Zea mays L.), okra (Abelmoschus esculentus L. Moench), and sweet potato (Ipomoea batatas L. Lam), Orkwor, G. C., Okereke, O. U., Ezedinma, C., Hahn, S. K., Ezumah, H. C. and Akobundu, I., in: Acta Horticulturae, volume 380, pages 349-354, ISSN 0567-7572, 1994.
 
Correlated response and use of selection index in cassava, Mahungu, N., Chheda, H. R., Aken 'Ova, M.* and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 114-117, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Genetic diversity and phylogenetic relationships in the genus Dioscorea using PCR-RAPD, Mignouna, H., Asiedu, R., Thottappilly, G. and Hahn, S. K., in: Invited paper at the symposium of the International Society for Tropical Root Crops (ISTRC), Brazil, November 14-19, 1994, 1994.
 
Distribution and disease recovery of African cassava mosaic virus (ACMV) in stems of resistance and susceptible cassava, Njock, T. E., Atiri, G.*, Thottappilly, G. and Hahn, S. K., in: Root croops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-African Branch, 22-28 November 1992, Kampala, Uganda, pages 149-152, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.
 
An agroecologically-oriented introduction of cassava germplasm from Latin America into Africa, Porto, M. C. M., Asiedu, R., Dixon, A. and Hahn, S. K., in: Tropical root crops in a developing ecnomy: Proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 october 1991, Accra, Ghana, pages 118-128, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
The genetics of resistance to cocoyam root rot blight complex disease in Xanthosoma sagittifolium(L.)Schott, Agueguia, A, Fatokun, C. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th symposium of the International Society for Tropical RootCrops 20-26 October 1991, Accra Ghana, pages 438-442, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Effectiveness of the polyethylene plastic mulch as a control measure against sweet potato weevils (Cylas spp., Coleoptera: Curculionidae), Lema, K., Osiru, D.* and Hahn, S. K., in: Root crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-African Branch 22-28 November 1992, Kampala, Uganda, pages 302-306, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.
 
Germination of cassava (Manihot esculenta Crantz) pollen, Mbahe, R. E., Aken 'Ova, M.* and Hahn, S. K., in: Tropical root crops in a developing economy: procedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 october 1991, Accra Ghana, pages 172-177, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low-input agriculture, Dixon, A., Asiedu, R. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 130-137, ISTRC; Government of Ghana; Internatinal Institute of Tropical Agriculture (IITA), 1994.
 
Introgression of ceara rubber (Manihot glaziovii Muell-Arg) into cassava (M. esculenta Crantz): a morphological and electrophoretic evidence, Wanyera, N., Hahn, S. K. and Aken 'Ova, M.*, in: Root crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch, 22-28 November 1992, Kampala, Uganda, pages 125-130, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.
 
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, Gyansa-Ameyyaw, C. E., Hahn, S. K., Alvarez, M. N. and Doku, E. V., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 335-341, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Effects of mulching materials on the growth, development and yield of white yam, Osiru, D.* and Hahn, S. K., in: African Crop Science Journal, volume 2, number 2, pages 153-160, ISSN 1021-9730, 1994.
 
Screening cassava cultivars for resistance to the cassava anthracnose disease (CAD), Ikotun, T.* and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 178-183, ISTRC; Government of Ghana; International Institue of Tropical Agriculture (IITA), 1994.
 
Cyanide and cassava breeding, Mahungu, N., Hahn, S. K. and Chheda, H. R., in: Root crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-African Branch, 22-28 November 1992, Kampala, Uganda, pages 101-105, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.
 
Interspecific hybridization in the genus Manihot - progress and prospects, Asiedu, R., Hahn, S. K., Bai, K. V. and Dixon, A., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 10-16 October 1991, Accra, Ghana, pages 110-113, International Society of Tropical Root Crops, 1994.
 
Circumstances of rapid spread of cultivation of improved cassava varieties in Nigeria, Nweke, F., Hahn, S. K. and Ugwu, B., in: Journal of Farming Systems Research-Extension, volume 4, number 3, pages 93-119, 1994.
 
Production des ignames; role actuel et perspectives: Guide de recherche de l'Iita, No. 46 d'avenir, Hahn, S. K., Osiru, D., Akoroda, M. and Otoo, J., Guide de recherche de l'Iita, No. 46, International Institute of Tropical Agriculture (IITA), 1994.
 
Root crops for food security in sub-Saharan Africa, Hahn, S. K., in: Root crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch, 22-28 November 1992, Kampala, Uganda, pages 16-21, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.
 
Polyploid breeding of cassava, Hahn, S. K., Bai, K. V., Chukwuma, E., Asiedu, R., Dixon, A. and Ng, S. Y. C., in: Acta Horticulturae, volume 380, pages 102-109, ISSN 0567-7572, 1994.
 

1993

The relevance of stomatal frequency, type and size in the delimitation of three complex species of Dioscorea L. (Dioscoreaceae), Ugborogho, R. E., Ng, N. Q., Thottappilly, G. and Hahn, S. K., in: Feddes Repertorium, volume 104, number 7-8, pages 485-496, 1993.
 
Lutte contre les maladies de l'igname: Guide de recherche de l'Iita, No. 39, Hahn, S. K., Guide de recherche de l'Iita, No. 39, International Institute of Tropical Agriculture (IITA), 1993.
 

1992

Status of wide crosses in cassava and yam, Asiedu, R., Bai, K. V., Terauchi, R., Dixon, A. and Hahn, S. K., pages 63-68, CTA; International Institute of Tropical Agriculture (IITA), 1992.
 
Analysis of the need for biotechnology research on cassava, yam, and plantain, Asiedu, R., Ng, S. Y. C., Vuylsteke, D., Terauchi, R. and Hahn, S. K., pages 27-32, CTA; International Institute of Tropical Agriculture (IITA), 1992.
 
Studies on the reproductive biology of white yam (Dioscorea rotundata Poir.), Segnou, , Fatokun, C., Akoroda, M. and Hahn, S. K., in: Euphytica, volume 64, pages 197-203, ISSN 0014-2336, 1992.
 
Assessment of dry-matter content in cassava, Adeyeye, S. O., Dixon, A., Asiedu, R. and Hahn, S. K., in: Promotion of root crop-based industries: an incentive for research and development: proceedings of the 4th Triennial symposium of the International Society for Tropical Root Crops-Africa Branch held in Kinshasa, Zaire, 5-8 December 1989, pages 111-112, International Society for Tropical Root Crops, 1992.
 
Studies of weeding frequency in cassava in cameroon, Ambe, J. T., Agboola, A. A. and Hahn, S. K., in: Tropical Pest Management, volume 38, number 3, pages 302-304, 1992.
 
Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA), Dixon, A., Asiedu, R. and Hahn, S. K., in: Promotion of root crop-based industries: an incentive for research and development: proceedings of the Fourth Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch held in Kinshasa, Zaire, 5-8 December 1989, pages 83-87, International Society for Tropical Root Crops (ISTRC), 1992.
 
Cytogenetics and crop improvement, Bai, K. V. and Hahn, S. K., pages 81-88, CTA; Intenational Institute of Tropical Agriculture (IITA), 1992.
 
Introgression of genes from wild relatives into cassava, Asiedu, R., Hahn, S. K., Bai, K. V. and Dixon, A., pages 89-91, ISTRC-AB; International Institute of Tropical Agriculture (IITA), 1992.
 
Introgression of genes from wild relatives into cassava, Asiedu, R., Hahn, S. K., Bai, K. V. and Dixon, A., in: Promotion of root crop-based industries: an incentive for research and development: proceedings of the 4th Triennial symposium of the International Society for Tropical Root Crops-Africa Branch held in Kinshasa, Zaire, 5-8 December 1989, pages 89-91, International Society for Tropical Root Crops, 1992.
 
Spontaneous somatic tetraploids in cassava, Hahn, S. K., Bai, K. V. and Asiedu, R., in: Japanese Journal of Breeding, volume 42, number 2, pages 303-308, 1992.
 
Management of yam diseases: IITA research guide, No. 39, Hahn, S. K., IITA research guide, No. 39, International Institute of Tropical Agriculture (IITA), 1992.
 

1991

Host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa Bondar) at IITA, Kanno, H., Dixon, A., Asiedu, R. and Hahn, S. K., in: The role of root crops in regional food security and sustainable agriculture. Proceedings, Fourth Eastern and Southern Africa Regional Workshop on Root and Tuber Crops, Mansa, Zambia, 29 Oct to 2 Nov 1990, edited by M.N. Alvarez and R. Asiedu, pages 103-106, International Institute of Tropical Agriculture (IITA), 1991.
 
Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA, Kanno, H., Dixon, A., Asiedu, R. and Hahn, S. K., in: The role of root crops in regional food security and sustainable agriculture: proceedings of the Fourth Eastern and Southern Africa Regional Root Crops Workshop, 29 Oct - 2 Nov. 1990, Mansa, Zambia, pages 99-102, 1991.
 
Cassava germplasm strategies for Africa, Allem, A.C. and Hahn, S. K., volume II, pages 127-149, chapter 3.3, International Institute of Tropical Agriculture (IITA); IBPGR; UNEP; CNR, ISBN 978 131 0634, 1991.
 
Cassava in Africa: towards a broader genetic base, Hahn, S. K., Asiedu, R., Dixon, A., Porto, M. C. M. and Bai, K. V., in: The role of root crops in regional food security and sustainable agriculture: Proceedings, Fourth Eastern and Southern Africa Regional Workshop on Root and Tuber Crops, Mansa, Zambia, 29 Oct to 2 Nov 1990, edited by M.N. Alvarez and R. Asiedu, pages 50-54, International Institute of Tropical Agriculture (IITA), 1991.
 
Biotechnology in reproductive biology, Hahn, S. K., Bai, K. V., Asiedu, R., Dixon, A. and Tavaolleti, S., pages 340-346, Springer-Verlag, 1991.
 
Cassava in Africa: towards a broader genetic base, Hahn, S. K., Asiedu, R., Dixon, A., Porto, M. C. M. and Bai, K. V., in: The role of root crops in regional food security and sustainable agriculture: proceedings of the Fourth Eastern and Southern Africa Regional Root Crops Workshop, 29 Oct - 2 Nov. 1990, Mansa, Zambia, pages 45-52, 1991.
 
Breeding cassava for multiple pest resistance in Africa, Hahn, S. K., Dixon, A. and Asiedu, R., in: Integrated pest management in root and tuber crops: proceedings of a workshop held at the Biological Control Center for Africa, 10-14, Dec. 1990, Cotonou, Republic of Benin, International Institute of Tropical Agriculture (IITA), 1991.
 

1990

Population of nitrogen-fixing bacteria in sweet potato fibrous roots, Dodo, H. W., Hill, W. A., Mulongoy, K., Adeyeye, S. O. and Hahn, S. K., volume 2, pages 99-104, Collection Actes de I'ISRA, 1990.
 
Sweet potato root and biomass production with and without nitrogen fertilization, Hill, W. A., Dodo, H. W., Hahn, S. K., Mulongoy, K. and Adeyeye, S. O., in: Agronomy Journal, volume 82, number 6, pages 1120-1122, ISSN 0002-1962, 1990.
 
Data collection and organization, Osiru, D.* and Hahn, S. K., pages 121-137, International Institute of Tropical Agriculture (IITA), 1990.
 
First reactions to ABB cooking bananas distributed in southeastern Nigeria, Hahn, S. K., Vuylsteke, D. and Swennen, R., in: Sigatoka leaf spot diseases of bananas, edited by R.A. Fullerton and R.H. Stover: proceedings of an international workshop in San Jose, Costa Rica, 28 Mar - 1 Apr 1989, pages 306-315, International Network for the Improvement of Banana and Plantain (INIBAP), 1990.
 
Tetraploids, triploids and 2n pollen from diploid interspecific crosses with cassava, Hahn, S. K., Bai, K. V. and Asiedu, R., in: Theoretical and Applied Genetics, volume 79, pages 433-439, 1990.
 
Breeding, Hahn, S. K. and Asiedu, R., pages 21-28, International Institute of Tropical Agriculture (IITA), 1990.
 
Tetraploids, triploids, and 2n pollen from diploid interspecific crosses with cassava, Hahn, S. K., Bai, K. V. and Asiedu, R., in: Theoretical and Applied Genetics, volume 79, pages 433-439, 1990.
 
Integrated pest management for tropical root and tuber crops, Hahn, S. K. and Caveness, F. E., International Institute of Tropical Agriculture (IITA), 1990.
 
Breeding cassava and sweet potato for pest and disease resistance in Africa, Hahn, S. K., Caveness, F. E., Lema, K. and Theberge, R. L., pages 66-72, International Institute of Tropical Agriculture (IITA), 1990.
 

1989

Combatting the black Sigatoka threat to plantains, Swennen, R., Vuylsteke, D. and Hahn, S. K., in: IITA Research Briefs, volume 9, number 2, pages 2-4, 1989.
 
Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, Hahn, S. K., Isoba, J. C. G. and Ikotun, T.*, in: Crop Protection, volume 8, number 3, pages 147-168, ISSN 0261-2194, 1989.
 
In praise of cassava, Hahn, S. K., UNICEF, 1989.
 
Root and tuber crops: food security in Central Africa, Hahn, S. K. and Theberge, R. L., 1989.
 
An overview of African traditional cassava processing and utilization, Hahn, S. K., in: Outlook on Agriculture, volume 18, number 3, pages 110-118, ISSN 0030-7270, 1989.
 

1988

Cassava-groundnut intercropping in Zaire, Lutaladio, N. B., Brockman, F., Landu, K. B., Wahua, T. A. T.* and Hahn, S. K., pages 144-155, International Institute of Tropical Agriculture (IITA), 1988.
 
Biotechnology of plantain and banana, Vuylsteke, D. and Hahn, S. K., IITA meeting reports series 1988/2, pages 55-57, 1988.
 
Constraints on cassava and yam research and production in Africa, Hahn, S. K., 1988.
 

1987

Reduction of cyyanide during processing of cassava into some traditional African foods, Mahungu, N., Yamauchi, M., Almazan, A. M. and Hahn, S. K., in: Journal of Food and Agriculture, volume 1, pages 11-15, 1987.
 
Techniques ameliorees de production de semenceaux d'igname, Otoo, J., Osiru, D.*, Ng, S. Y. C. and Hahn, S. K., in: IITA, Ibadan, pages -57 p., 1987.
 
An in invtro cassava-innoculation method for the selection of anthracnose-resistant cultivars, Bruggen, P., Maraite, H. and Hahn, S. K., in: In: Tropical Root Crops: Root Crops and the African Food Crisis; Proceedings of the Third Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch, pages 113-116, IDRC, 1987.
 
Effect of mulching material and plant density on growth, development and yield of white yam minisetts, Osiru, D.*, Hahn, S. K. and Lal, R., in: Tropical Root Crops: Root Crops and the African Food Crisis: Proceedings of the Third Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch, pages 43-47, IDRC, 1987.
 
Gari from unpeeled cassava tubers, Almazan, A. M. and Hahn, S. K., in: Nigerian Food Journal, volume 5, pages 108-111, ISSN ISSN: 0189-7241, 1987.
 
Most probable numbers of nitrogen-fixing bacteria associated with sweet potato roots, Hill, W. A., Hahn, S. K. and Mulongoy, K., IDRC, 1987.
 
Evaluation of ten sweet potato cultivars at eight sites in southern Nigeria, Ezumah, H. C., Hahn, S. K. and Terry, E. R., in: Samaru Journal of Agricultural Research, volume 5, number 1-2, pages 87-96, 1987.
 
Cassava and the African food crisis., Hahn, S. K., Mahungu, N., Otoo, J., Maabaha, M. A. M., Lutaladio, N. B. and Dahniya, M. T., in: In: Tropical Root Crops: Root Crops and the African Food Crisis: Proceedings of the Third Triennial Symposium of the Interational Society for Tropical Root Crops, pages 24-29, IDRC, African Branch, 1987.
 
Yam production and its future prospects, Hahn, S. K., Osiru, D.*, Akoroda, M. and Otoo, J., in: Outlook on Agriculture, volume 16, pages 105-110, 1987.
 
Book Review of Land Clearing and Dvelopment in the Tropics, Hahn, S. K., in: Agriculture, Ecosystems and Environment, volume 18, pages 382-383, 1987.
 

1985

Cassava: a basic food of Africa, Hahn, S. K. and Keyser, J., in: Outlook on Agriculture, volume 14, number 2, pages 95-99, 1985.
 

1984

An automated enzymatic assay for determining the cyanide content of cassava (Manihot esculenta) and cassava products, Rao, P. V. and Hahn, S. K., in: Journal of the Science of Food and Agriculture, volume 35, number 4, pages 426-436, ISSN 0022-5142, 1984.
 

1983

Description of crops: sweet potato, yam and cocoyam, Caveness, F. E., Hahn, S. K. and Alvarez, M. N., 1983.
 
Effect of shoot removal on shoot and tuberous root yields and yield components of sweet potatoes, Dahniya, M. T., Hahn, S. K. and Oputa, C. O.*, in: Experimental Agriculture, 1983.
 
Progress of root and tuber improvement at IITA, Hahn, S. K., in: Paper presented at the Sixth Symposium of the International Society for Tropical Root Crops, 21-26 February 1983,CIP,Lima, Peru, pages 21-26, 1983.
 
Sweet potato improvement at IITA, Hahn, S. K., Caveness, F. E., Alvarez, M. N. and Ng, S. Y. C., 1983.
 
Breeding low cyanide cassava varieties and effect of traditional processing method on the residual cyanide content in the final product, Hahn, S. K., Mahungu, N., Chukwuma, E., Rao, P. V. and Almazan, A. M., in: Paper presented at First African Conference of Food Science and Technology,14-17 November 1983, Cairo, Egypt, pages 14-17, 1983.
 
The impact of biottechnology on food production in Africa: the cassava story, Hahn, S. K., Terry, E. R. and Russell, N., 1983.
 
The physiology of sweet potato, Hahn, S. K. and Hozyo, Y., 1983.
 
Sweet potato and yam, Hahn, S. K. and Hozyo, Y., pages 319-340, 1983.
 

1982

Investigating Source-Sink Relations in Cassava by Reciprocal Graft, Dahniya, M. T., Oputa, C. O.* and Hahn, S. K., in: Experimental Agriculture, volume 18, pages 399-402, 1982.
 
Tissue culture of root and tuber crops at the International Institute of Tropical Agriculture, Ng, S. Y. C. and Hahn, S. K., in: Paper presented at West African Regional Root Crop Workshop 27 June-2 July 1982, 1982.
 
Increasing and Stabilising Cassava and Sweet Potato Productivity by Disease Resistance and Crop hygiene", Terry, E. R. and Hahn, S. K., in: Root Crops in Eastern Africa: proceedings of a workshop, pages 47-52, 1982.
 
Cassava mealybug control strategy: IITA's approach, Hahn, S. K. and Herren, H. R., in: Paper presented at NAFPP Workshop,NRCRI, 21-26 February 1982, Umudike, Canada, 1982.
 
Screening Sweet Potato for Source Potential, Hahn, S. K., in: Euphytica, volume 31, pages 13-18, 1982.
 
Research Priorities, Techniques, and Accomplishments in Cassava Breeding at IITA, Hahn, S. K., in: Root Crops in Eastern Africa. Proceedings of a workshop, pages 19-22, 1982.
 
Research Priorities, Techniques and Accomplishments in Sweet potato Breeding at IITA, Hahn, S. K., in: Root Crops in Eastern Africa. Proceedings of a workshop, pages 23-26, 1982.
 

1981

Effects of harvesting frequency on leaf and root yields of cassava, Dahniya, M. T., Oputa, C. O.* and Hahn, S. K., in: Experimental Agriculture, volume 17, number 1, pages 91-95, ISSN 0014-4797, 1981.
 
Breeding sweet potato for resistance to weevils, Hahn, S. K. and Leuschner, K., in: Paper presented at the International symposium on sweet potato, AVRDC, 23-27 March 1981, 1981.
 
Cassava research program at IITA, Hahn, S. K., in: Paper presented at the Workshop on the use of cassava as animal feed. XII International Congress of Nutrition, San Diego. 16-21 August 1981, 1981.
 
A preliminary report on cassava mealbug research at IITA, Hahn, S. K., in: Paper presented at the International Workshop on cassava mealbug and green spider mite, Umudike, 12-16 October 1981, 1981.
 
Resistance of sweet potato cultivars to African sweet potato weevil, Hahn, S. K. and Leuschner, K., in: Crop Science, volume 21, pages 499-503, ISSN 0011-183X, 1981.
 
Resistance of sweet potato viruses (SPVD), Hahn, S. K., Terry, E. R. and Leuschner, K., in: Horticultural Science, volume 16, number 4, pages 535-537, ISSN 0862-867X, 1981.
 
Cassava varietal response to mycorrhizal fungi in phosphate-deficient soils, Hahn, S. K., Kang, B. and Ayanaba, A., GIAM VI, Academic Press, 1981.
 

1980

Cassava varietal response to mycorrhizal fungi in phosphate deficient soils, Kang, B. T., Hahn, S. K. and Ayanaba, A., 1980.
 
Increasing and stabilising cassava and sweet potato productivity by disease resistance and crop hygiene, Terry, E. R. and Hahn, S. K., 1980.
 
Effect of cassava mosaic disease on growth and yield of a local and an improved variety of cassava, Terry, E. R. and Hahn, S. K., in: Tropical Pest Management, volume 26, number 1, pages 34-37, ISSN 0143-6147, 1980. [DOI]
 
Cassava breeding for resistance to cassava mosaic disease, Hahn, S. K., Terry, E. R. and Leuschner, K., 1980.
 
Sweet potato and yams, Hahn, S. K. and Hozyo, Y., 1980.
 
Cassava varietal response to mycorrhizal fungi in phosphate deficient soils, Hahn, S. K., Kang, B. T. and Ayanaba, A., 1980.
 
Priorities, techniques and achievements in sweet potato improvement at IITA, Hahn, S. K., 1980.
 
Priorities, techniques and achievements in cassava improvement at IITA, Hahn, S. K., 1980.
 
Cassava improvement at IITA in relation to National Programs in Africa, Hahn, S. K., 1980.
 
Breeding cassava for resistance to cassava mosaic disease, Hahn, S. K. and Leuschner, K., in: Euphytica, volume 29, number 3, pages 673-683, ISSN 0014-2336, 1980.
 
Correlated resistance of cassava mosaic and backterial blight disease, Hahn, S. K., Howland, A. K. and Terry, E. R., in: Euphytica, volume 29, pages 306-311, ISSN 0014-2336, 1980.
 
Resistance of cassava clones to cassava green mite, Hahn, S. K., in: Tropical Pest Management, 1980.
 
Cassava improvement strategies for resistance to major economic diseases and pests in Africa, Hahn, S. K., Terry, E. R., Leuschner, K. and Singh, T.P., in: Proceedings of First Symposium International Society of Tropical Root Crops, Africa Branch, 8-12 September 1980, Ibadan, Nigeria, pages 25-28, 1980.
 

1979

Cassava improvement in Africa, Hahn, S. K., Terry, E. R., Leuschner, K., Akobundu, I., Okali, C. and Lal, R., in: Field Crops Research, volume 2, number 3, pages 193-226, ISSN 0378-4290, 1979.
 
Effects of viruses (SPVD) on growth and yield of sweet potato, Hahn, S. K., in: Exploration of Agriculture, volume 15, pages 253-256, 1979.
 

1978

Breeding of Cassava for Resistance to Cassava Bacterial Blight (CBB). PANS. 1978, Hahn, S. K., 1978.
 
Effects of Sweet Potato Viruses (SPVD) on Growth and Yield of Sweet Potato, Hahn, S. K., Experimental Agriculture, 1978.
 
Breeding cassava for resistance to Cassava Bacterial Blight., Hahn, S. K., in: Proceedings on an Interdisciplinary Workshop, IITA, Ibadan, Nigeria. June 26 -30, 1978, pages 34, Centre for Overseas Pest Research (Ministry of Overseas Development), London, UK., IITA, 1978.
 
Cassava Improvement in Africa, Hahn, S. K., 1978.
 
Breeding of Root and Tuber Crops at IITA, Hahn, S. K., IITA, 1978.
 
Breeding of Root and Tuber Crops at IITA, Hahn, S. K., IITA, 1978.
 

1977

Effect of method of seed bed preparation, mulching and time of planting on yam (Dioscorea rotundata) in Western Nigeria, Lal, R. and Hahn, S. K., in: Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 2-9 December, 1973, edited by C. L. A. Leakey, pages 293-306, International Society for Tropical Root Crops (ISTRC); International Institute of Tropical Agriculture (IITA), 1977.
 
Cassava breeding at IITA: proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 2-9 December, 1973, Hahn, S. K., Howland, A. K. and Terry, E. R., in: Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 2-9 December, 1973, pages 4-10, 1977.
 
Breeding of root and tuber crops, Hahn, S. K., Howland, A. K. and Wilson, J. E., in: Proceedings of the First National Seminar on Root and Tuber Crops, Umudike, 21-25 March, 1977, pages 36-47, 1977.
 
Breeding for resistance to cassava bacterial blight, Hahn, S. K. and Howland, A. K., in: Cassava bacterial blight: report of an interdiciplinary workshop held at IITA, Ibadan, Nigeria, 1-4 November 1976, pages 23, International Development Research Centre (IDRC), Ottawa, Canada, 1977.
 

1976

Cooperative testing and selection, Hahn, S. K., in: The International Exchange and Testing of Cassava Germ Plasm in Africa: proceedings of an interdisciplinary workshop held at IITA, Ibadan, Nigeria, 17-21 November, 1975 edited by Terry, E. and R. MacIntyre, pages 39-40, International Development Research Centre (IDRC), Ottawa, Canada, 1976.
 
Improvement of cassava at the IITA: proceedings of an interdisciplinary workshop held at IITA, Ibadan, Nigeria, 17-21 November, 1975, Hahn, S. K., in: The International Cassava Germ Plasm in Africa: proceedings of an interdisciplinary workshop held at IITA, Ibadan, Nigeria, 17-21 November, 1975 edited by Terry, E. and R. MacIntyre, pages 21-22, International Development Research Centre (IDRC), Ottawa, Canada, 1976.
 
Progress of cassava breeding at IITA, Hahn, S. K., 1976.
 

1975

Sweet potato productivity in relation to enviromental and genectic factors, Hahn, S. K., 1975.
 

1974

Screening for acyanogenesis in cassava; Manihot esculanta, Sadik, S., Okereke, O. U. and Hahn, S. K., in: IITA Technical Bulletin, volume 4, 1974.
 
Screening for photosynthetic efficiency in sweet potato, Sadik, S., Okereke, O. U. and Hahn, S. K., 1974.
 
Screening sweet potatoes for survival at low carbon dioxide concentration, Sadik, S., Okereke, O. U. and Hahn, S. K., 1974.
 
Screening for acyanogenesis in cassava, Sadik, K.*, Okereke, O. U. and Hahn, S. K., 1974.
 
Screening for Acyanogenesis in Cassava: IITA Technical Bulletin No 4, Sadik, S., Okereke, O. U. and Hahn, S. K., 1974.
 
Breeding for resistance to cassava bacterial blight at IITA: proceedings of the First Workshop on Cassava Bacterial Blight in Nigeria, Umudike, 28th April - 1st May 1974, Hahn, S. K., Howland, A. K. and Okoli, C., in: Proceedings of the First Workshop on Cassava Bacterial Blight in Nigeria, held at the Federal Agrictural Research and Training Station, Umudike, 28th April - 1st May 1974 edited by Okpala, E. U. and H. J. Glaser, pages 11-14, 1974.
 

1973

Cyanide toxicity and cassava research at the International Institute of Tropical Agriculture, Ibadan, Nigeria, Sadik, S. and Hahn, S. K., in: Chronic cassava toxicity: proceedings of an interdisciplinary workshop, London, England, 29-30 January 1973, edited by Nestel, B. and Reginald MacIntyre, pages 41-42, International Development Research Centre (IDRC, International Development Research Centre (IDRC), Ottawa, Canada, 1973.
 
Breeding for resistance to cassava mosaic: proceedings of Cassava Mosaic Workshop, International Institute of Tropical Agriculture, Ibadan, Nigeria, 11-12 December, 1972, Hahn, S. K. and Howland, A. K., in: Proceedings of Cassava Mosaic Workshop, International Institute of Tropical Agriculture, Ibadan, Nigeria, 11-12 December, 1972, pages 37-39, 1973.
 

Publications as Editor

1994

The genetics of resistance to cocoyam root rot blight complex disease in Xanthosoma sagittifolium(L.)Schott, Agueguia, A, Fatokun, C. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th symposium of the International Society for Tropical RootCrops 20-26 October 1991, Accra Ghana, pages 438-442, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Cassava-based foods: how safe are they?, Bokanga, M. and Otoo, E.*, in: Tropical root crops in developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops 20-26 October 1991, Accra, Ghana, pages 225-232, ISTRC; Govrenment of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Intercrop yields of cassava and rice as influenced by cassava variety and population, Dahniya, M. T., Jalloh, A.* and Ezumah, H. C., in: Tropical root crops in developing economy: proceedings of the 9th Symposium of the Internationl Society fo Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 194-199, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
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, Gyansa-Ameyyaw, C. E., Hahn, S. K., Alvarez, M. N. and Doku, E. V., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 335-341, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Screening cassava cultivars for resistance to the cassava anthracnose disease (CAD), Ikotun, T.* and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 178-183, ISTRC; Government of Ghana; International Institue of Tropical Agriculture (IITA), 1994.
 
Productivity of cassava intercrop as influenced by cassava variety and time of introducingrice into cassava, Jalloh, A.*, Dahniya, M. T. and Ezumah, H. C., in: Tropical root crops in a developing economy: proccedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 200-204, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Correlated response and use of selection index in cassava, Mahungu, N., Chheda, H. R., Aken 'Ova, M.* and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 114-117, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Germination of cassava (Manihot esculenta Crantz) pollen, Mbahe, R. E., Aken 'Ova, M.* and Hahn, S. K., in: Tropical root crops in a developing economy: procedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 october 1991, Accra Ghana, pages 172-177, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low-input agriculture, Dixon, A., Asiedu, R. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 130-137, ISTRC; Government of Ghana; Internatinal Institute of Tropical Agriculture (IITA), 1994.
 
Production and distribution of virus-free yam (Dioscorea rotundata Poir.), Ng, S. Y. C., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Rooy Crops, 20-26 October 1991, Accra, Ghana, pages 324-328, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Alternative breads from cassava flour, Eggleston, G. and Omoaka, P., in: Proceedings of the 9th Symposium of the International Society for Tropical Root Crops (ISTRC-AB), 20-26 October 1991, Accra, Ghana, pages 243-248, ISTRC; Governmeny of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Deleterious influence of water-logging on potato in warm climates, Ekanayake, I. J., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops 20-20 October 1991, Accra, Ghana, pages 506-510, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
Interspecific hybridization in the genus Manihot - progress and prospects, Asiedu, R., Hahn, S. K., Bai, K. V. and Dixon, A., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 10-16 October 1991, Accra, Ghana, pages 110-113, International Society of Tropical Root Crops, 1994.
 
Cassava production trends in Africa, Nweke, F., Polson, R. and Strauss, J., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 311-321, ISTRC; Government of Ghana; International Institute of Tropical Agricultuer (IITA), 1994.
 
Genotype environment interaction studies with cassava, Otoo, J., Dixon, A., Asiedu, R., Okeke, J. E., Maroya, N., Tougnon, K., Okoli, O., Tetteh, J. P. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 10-16 October 1991, Accra, Ghana, pages 146-148, International Society for Tropical Root Crops, 1994.
 
Technical performance of a root crop chipping machine, Jeon, Y. W. and Halos, L. S., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 94-100, RTB; Root and Tuber.; ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.
 
An agroecologically-oriented introduction of cassava germplasm from Latin America into Africa, Porto, M. C. M., Asiedu, R., Dixon, A. and Hahn, S. K., in: Tropical root crops in a developing ecnomy: Proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 october 1991, Accra, Ghana, pages 118-128, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.