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Journal Article 1994

Autor: Orkwor, G. Okereke, O. Ezedinma, C. Hahn, S. Ezumah, H. Akobundu, I.

Yam was intercropped with maize, okra, and sweet potato and subjected to various periods of weed interference and weed-free regimes. The field trials were conducted for two cropping seasons at the research farm of the National Root Crops Institute, Umudike, Nigeria, 5° 29' N latitude and 7° 32' E...

Enlace original: https://cgspace.cgiar.org/handle/10568/97385

Investigación en Agricultura
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Orkwor, G. ,  Okereke, O. ,  Ezedinma, C. ,  Hahn, S. ,  Ezumah, H. ,  Akobundu, I. ,  [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)] ,  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)
Journal Article 1994

Autor: Osiru, D. Hahn, S.

Two similar experiments are described in which the effects of different mulching materials and staking on the growth, development and yield of white yam (Dioscorea rotundata) Minisetts were studied. One white yam cultivar TDR 131 was used and the treatments were: black and white embossed polyethy...

Enlace original: https://cgspace.cgiar.org/handle/10568/97399

Investigación en Agricultura
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Osiru, D. ,  Hahn, S. ,  [Effects of mulching materials on the growth, development and yield of white yam] ,  Effects of mulching materials on the growth, development and yield of white yam
Journal Article 1994

Autor: Otoo, J. Dixon, A. Asiedu, Robert Okeke, J. Maroya, N. Tougnon, K. Okoli, O. Tetteh, J. Hahn, S.

Multilocational trials were conducted in several agroecological zones in West Africa to assess the magnitude of genotype x environment (G x E) interaction and to identify stable varieties which could be used in breeding programs in the region. The reaction of the varieties to major cassava diseas...

Enlace original: https://cgspace.cgiar.org/handle/10568/97369

Investigación en Agricultura
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Otoo, J. ,  Dixon, A. ,  Asiedu, Robert ,  Okeke, J. ,  Maroya, N. ,  Tougnon, K. ,  Okoli, O. ,  Tetteh, J. ,  Hahn, S. ,  [Genotype x environment interaction studies with cassava] ,  Genotype x environment interaction studies with cassava
Journal Article 1994

Autor: Hahn, S. Bai, K. Chukwuma, E. Asiedu, Robert Dixon, A. Ng, S.

Spontaneous sexual and asexual polyploids occur in cassava. The cassava polyploid breeding strategies using these polyploidization processes are discussed. Sexual polyploidization has advantages over asexual polyploidization in terms of viability of gametes, heterosis, vigor, plant architecture, ...

Enlace original: https://cgspace.cgiar.org/handle/10568/97367

Investigación en Agricultura
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Hahn, S. ,  Bai, K. ,  Chukwuma, E. ,  Asiedu, Robert ,  Dixon, A. ,  Ng, S. ,  [Polyploid breeding of cassava] ,  Polyploid breeding of cassava
Report 1988

Autor: Hahn, S.

The major tropical root crops cassava (Manilwt esculenta Crantz) and yams (Dioscorea spp.)-are widely grown and are mostly used as subsistence staples in many parts of the tropics and subtropics in Africa. They are the major source of energy for well over 200 million people on the continent. The ...

Enlace original: https://cgspace.cgiar.org/handle/10568/98797

Investigación en Agricultura
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Hahn, S. ,  [Constraints on cassava and yam research and production in Africa] ,  Constraints on cassava and yam research and production in Africa
Journal Article 1989

Autor: Hahn, S.

Cassava is grown in 31 African countries and consumption per capita averages just over 100 kg/year. This article reviews traditional cassava processing and utilization as now practised by small-scale farmers and processors in Africa, and examines the opportunities for improving post-harvest opera...

Enlace original: https://cgspace.cgiar.org/handle/10568/98610

Investigación en Agricultura
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Hahn, S. ,  [An overview of African traditional cassava processing and utilization] ,  An overview of African traditional cassava processing and utilization
Journal Article 1989

Autor: Hahn, S. Isoba, J. Ikotun, T.

Despite the advantages of root crops as important staple food crops in the tropics, research and development of such crops has been neglected. There is, therefore, the need for production, processing and utilization techniques to be developed, evaluated and made available to farmers. However, bec...

Enlace original: https://cgspace.cgiar.org/handle/10568/98689

Investigación en Agricultura
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Hahn, S. ,  Isoba, J. ,  Ikotun, T. ,  [Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria] ,  Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
Book Chapter 1992

Autor: Asiedu, Robert Ng, S. Vuylsteke, D.R. Terauchi, R. Hahn, S.

Cassava, yam, and plantain are staple food crops essential to food security in the humid and Sub-humid tropics of Africa. However, these crops have long growth cycles, high perishability and slow multiplication rates of propagation materials, and they are subject to a number of biological stresse...

Enlace original: https://cgspace.cgiar.org/handle/10568/98747

Investigación en Agricultura
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Asiedu, Robert ,  Ng, S. ,  Vuylsteke, D.R. ,  Terauchi, R. ,  Hahn, S. ,  [Analysis of the need for biotechnology research on cassava, yam, and plantain] ,  Analysis of the need for biotechnology research on cassava, yam, and plantain
Report 1974

Autor: Sadik, S. Okereke, O. Hahn, S.

The sodium picrate test for hydrocyanic acid was used (0 evaluate BB.S10cassava plants for cyanogenic content. Acyanogenic plants were not found in spite of the large number of plants rested. A small number of plants exhibited low to medium degree of cyanogenesis while the rest of [he plants show...

Enlace original: https://cgspace.cgiar.org/handle/10568/98788

Investigación en Agricultura
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Sadik, S. ,  Okereke, O. ,  Hahn, S. ,  [Screening for Acyanogenesis in cassava: IITA Technical Bulletin No 4] ,  Screening for Acyanogenesis in cassava: IITA Technical Bulletin No 4
Journal Article 1992

Autor: Segnou, M. Fatokun, C. Akoroda, M.O. Hahn, S.

Investigations were conducted on the identification and distribution of yam natural pollinators, flowering pattern and hybridization of white yam (Dioscorea rotundata Poir.) at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, in order to provide informations for produc...

Enlace original: https://cgspace.cgiar.org/handle/10568/98694

Investigación en Agricultura
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Segnou, M. ,  Fatokun, C. ,  Akoroda, M.O. ,  Hahn, S. ,  [Studies on the reproductive biology of white yam (Dioscorea rotundata Poir.)] ,  Studies on the reproductive biology of white yam (Dioscorea rotundata Poir.)

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