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Journal Article 2005

Autor: Ojiambo, P. Scherm, H.

In the southeastern United States, Septoria leaf spot, caused by Septoria albopunctata, can result in premature defoliation of blueberry plants during summer and fall, thereby reducing yield potential for the following year. The effects of disease severity and leaf attributes (leaf age and leaf l...

Enlace original: https://cgspace.cgiar.org/handle/10568/91897

Investigación en Agricultura
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Ojiambo, P. ,  Scherm, H. ,  [Survival analysis of time to abscission of blueberry leaves affected by Septoria leaf spot] ,  Survival analysis of time to abscission of blueberry leaves affected by Septoria leaf spot
Journal Article 2005

Autor: Ojiambo, P. Scherm, H.

Septoria leaf spot, caused by Septoria albopunctata, is an important disease on blueberry in the southeastern United States, yet its epidemiology is largely unknown. Disease severity and dissemination of pycnidiospores were monitored from 2002 to 2004 in a planting of susceptible Premier rabbitey...

Enlace original: https://cgspace.cgiar.org/handle/10568/91896

Investigación en Agricultura
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Ojiambo, P. ,  Scherm, H. ,  [Temporal progress of Septoria leaf spot on rabbiteye blueberry (Vaccinium ashei)] ,  Temporal progress of Septoria leaf spot on rabbiteye blueberry (Vaccinium ashei)
Journal Article 2008

Autor: Atehnkeng, J. Ojiambo, P. Donner, M. Ikotun, T. Sikora, R.A. Cotty, P. Bandyopadhyay, Ranajit

Maize samples were collected during a survey in three agro-ecological zones in Nigeria to determine the distribution and aflatoxin-producing potential of members of Aspergillus section Flavi. The three agro-ecological zones were, Derived Savannah (DS) and Southern Guinea Savannah (SGS) in the hum...

Enlace original: https://cgspace.cgiar.org/handle/10568/90780

Investigación en Agricultura
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Atehnkeng, J. ,  Ojiambo, P. ,  Donner, M. ,  Ikotun, T. ,  Sikora, R.A. ,  Cotty, P. ,  Bandyopadhyay, Ranajit ,  [Distribution and toxigenicity of Aspergillus species isolated from maize kernels from three agroecological zones in Nigeria] ,  Distribution and toxigenicity of Aspergillus species isolated from maize kernels from three agroecological zones in Nigeria
Journal Article 2007

Autor: Bandyopadhyay, Ranajit Ojiambo, P. Twizeyimana, M. Asafo-Adjei, B. Frederick, R.D. Pedley, K.F. Stone, C.L. Hartman, G.

Nigeria is the only country in West Africa where soybean rust, caused by Phakopsora pachyrhizi, has been officially reported (1). During a disease survey in Ghana during October 2006, soybean (Glycine max) leaves with rust symptoms (tan, angular lesions with erumpent sori exuding urediniospores) ...

Enlace original: https://cgspace.cgiar.org/handle/10568/92183

Investigación en Agricultura
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Bandyopadhyay, Ranajit ,  Ojiambo, P. ,  Twizeyimana, M. ,  Asafo-Adjei, B. ,  Frederick, R.D. ,  Pedley, K.F. ,  Stone, C.L. ,  Hartman, G. ,  [First report of soybean rust caused by Phakopsora pachyrhizi in Ghana] ,  First report of soybean rust caused by Phakopsora pachyrhizi in Ghana
Journal Article 2007

Autor: Ojiambo, P. Bandyopadhyay, Ranajit Twizeyimana, M. Lema, A. Frederick, R.D. Pedley, K.F. Stone, C.L. Hartman, G.

Nigeria (1) and Uganda (3) are the closest countries to the Democratic Republic of Congo (DRC) where soybean rust caused by Phakopsora pachyrhizi has been reported. In February 2007, during a disease survey in DRC, soybean (Glycine max) leaves with rust symptoms (tan, angular lesions with erumpen...

Enlace original: https://cgspace.cgiar.org/handle/10568/92182

Investigación en Agricultura
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Ojiambo, P. ,  Bandyopadhyay, Ranajit ,  Twizeyimana, M. ,  Lema, A. ,  Frederick, R.D. ,  Pedley, K.F. ,  Stone, C.L. ,  Hartman, G. ,  [First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo] ,  First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo
Journal Article 2007

Autor: Bandyopadhyay, Ranajit Williams, J.H. Ojiambo, P.

Mycotoxins are toxic to humans and animals when present in food and feed above tolerance limits. Reduction in mycotoxin exposure of humans and animals has necessitated regulatory interventions by some national governments and international agencies. Conservative estimates of lost crop revenues, a...

Enlace original: https://cgspace.cgiar.org/handle/10568/92186

Investigación en Agricultura
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Bandyopadhyay, Ranajit ,  Williams, J.H. ,  Ojiambo, P. ,  [Social and political challenges in the regulation of mycotoxin contamination] ,  Social and political challenges in the regulation of mycotoxin contamination
Book Chapter 2012

Autor: Olanya, M. Nyankanga, R. Ojiambo, P. Lemaga, B. Kakuhenzire, R. Fontem, D.
Enlace original: https://cgspace.cgiar.org/handle/10568/65690

Investigación en Agricultura
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Olanya, M. ,  Nyankanga, R. ,  Ojiambo, P. ,  Lemaga, B. ,  Kakuhenzire, R. ,  Fontem, D. ,  [Optimization of late blight and bacterial wilt management in potato production systems in the highland tropics of Africa.] ,  Optimization of late blight and bacterial wilt management in potato production systems in the highland tropics of Africa.
Journal Article 2006

Autor: Scherm, H. Ngugi, H. Ojiambo, P.

We review trends and advances in three specific areas of theoretical plant epidemiology: models of temporal and spatial dynamics of disease, the synergism of epidemiology and population genetics, and progress in statistical epidemiology. Recent analytical modelling of disease dynamics has focused...

Enlace original: https://cgspace.cgiar.org/handle/10568/100009

Investigación en Agricultura
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Scherm, H. ,  Ngugi, H. ,  Ojiambo, P. ,  [Trends in theoretical plant epidemiology] ,  Trends in theoretical plant epidemiology
Journal Article 2006

Autor: Olanya, O. Ojiambo, P. Nyankanga, R.

Host resistance is an important component for the management of late blight [Phytophthora infestans] on potato, in the highland tropics, where effective fungicide use is limited because of the cost of application. Potato cultivars with major resistance genes to late blight (population A) and mino...

Enlace original: https://cgspace.cgiar.org/handle/10568/99985

Investigación en Agricultura
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Olanya, O. ,  Ojiambo, P. ,  Nyankanga, R. ,  [Dynamics of late blight development and comparative resistance of potato varieties in Kenya] ,  Dynamics of late blight development and comparative resistance of potato varieties in Kenya
Journal Article 2013

Autor: Zandjanakou-Tachin, M. Ojiambo, P. Vroh Bi, Irie Tenkouano, A. Gumedzoe, Y.M. Bandyopadhyay, Ranajit

Mycosphaerella species that cause the ‘Sigatoka disease complex’ account for significant yield losses in banana and plantain worldwide. Disease surveys were conducted in the humid forest (HF) and derived savanna (DS) agroecological zones from 2004 to 2006 to determine the distribution of the dise...

Enlace original: https://cgspace.cgiar.org/handle/10568/76026

Investigación en Agricultura
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Zandjanakou-Tachin, M. ,  Ojiambo, P. ,  Vroh Bi, Irie ,  Tenkouano, A. ,  Gumedzoe, Y.M. ,  Bandyopadhyay, Ranajit ,  [Pathogenic variation of Mycosphaerella species infecting banana and plantain in Nigeria] ,  Pathogenic variation of Mycosphaerella species infecting banana and plantain in Nigeria

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