Napier grass (Pennisetum purpureum), the most important forage crop in East Africa, has recently been affected by a devastating disease named Napier Grass Stunt (NGS). A phytoplasma of group 16SrI has been associated with NGS in Kenya and Uganda, whereas in Ethiopia, group 16SrIII was previously ...
Arocha, Y.
,
Zerfy, T.
,
Abebe, G.
,
Proud, J.
,
Hanson, Jean
,
Wilson, M.
,
Jones, Peter G.
,
Lucas, J.
,
[Identification of potential vectors and alternative plant hosts for the phytoplasma associated with Napier grass stunt disease in Ethiopia]
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Identification of potential vectors and alternative plant hosts for the phytoplasma associated with Napier grass stunt disease in Ethiopia
Making decisions in natural resource management involves an understanding of the risk and uncertainty of the outcomes, such as crop failure or cattle starvation, and of the normal spread of the expected production. Hedging against poor outcomes often means lack of investment and slow adoption of ...
Jones, Peter G.
,
Thornton, Philip K.
,
[Spatial modeling of risk in natural resource management]
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Spatial modeling of risk in natural resource management
A software package to generate daily weather data for Latin America and Africa is described. The program is based on a stochastic weather generator that uses a third-order Markov process to model daily weather data. The model has been fitted to data from more than 9200 stations with long runs of ...
Jones, Peter G.
,
Thornton, Philip K.
,
[MarkSim: Software to generate daily weather data for Latin America and Africa]
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MarkSim: Software to generate daily weather data for Latin America and Africa
We developed interpolated climate surfaces for global land areas (excluding Antarctica) at a spatial resolution of 30 arc s (often referred to as 1-km spatial resolution). The climate elements considered were monthly precipitation and mean, minimum, and maximum temperature. Input data were gather...
Hijmans R.J.
,
Cameron, S.E.
,
Parra, JL
,
Jones, Peter G.
,
Jarvis, Andy
,
[Very high resolution interpolated climate surfaces for global land areas]
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Very high resolution interpolated climate surfaces for global land areas
The conservation status of wild Arachis spp. is not well characterized for its maintenance and possible future exploitation for the improvement of cultivated peanut, Arachis hypogaea L. Our objectives were to use 2175 georeferenced observations of wild peanut (Arachis spp.) to assess the conserva...
Jarvis, Andy
,
Ferguson, Morag E.
,
Williams, D.E.
,
Guarino, Luigi
,
Jones, Peter G.
,
Stalker, H.T.
,
Valls, JFM
,
Pittman, RN
,
Simpson, CE
,
Bramel-Cox, P.J.
,
[Biogeography of wild Arachis: Assessing conservation status and setting future priorities]
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Biogeography of wild Arachis: Assessing conservation status and setting future priorities
The struggle to find sustainable formal insurance for droughts in developing countries captures the attention of many in the development community for good reason. Droughts disrupt the development process, and the impacts of drought are exacerbated by an unwillingness on the part of the poor to i...
Díaz Nieto, J.
,
Cook, Simon E.
,
Läderach, Peter
,
Fisher, Myles J.
,
Jones, Peter G.
,
[Rainfall index insurance to help smallholder farmers manage drought risk]
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Rainfall index insurance to help smallholder farmers manage drought risk
Jones, Peter G.
,
Arocha, Y.
,
Zerfy, T.
,
Proud, J.
,
Abebe, G.
,
Hanson, Jean
,
[A stunting syndrome of Napier grass in Ethiopia is associated with a 16SrIII Group phytoplasma]
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A stunting syndrome of Napier grass in Ethiopia is associated with a 16SrIII Group phytoplasma
The impacts of climate change on agriculture may add significantly to the development challenges of ensuring food security and reducing poverty. We show the possible impacts on maize production in Africa and Latin America to 2055, using high-resolution methods to generate characteristic daily wea...
Jones, Peter G.
,
Thornton, Philip K.
,
[The potential impacts of climate change on maize production in Africa and Latin America in 2055]
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The potential impacts of climate change on maize production in Africa and Latin America in 2055
Climate change science has been discussed and synthesized by the world's best minds at unprecedented scales. Now that the Kyoto Protocol may become a reality, it is time to be realistic about the likelihood of success of mitigation activities. Pastoral lands in the tropics hold tremendous sequest...
Reid, Robin S.
,
Thornton, Philip K.
,
McCrabb, G.J.
,
Kruska, R.L.
,
Atieno, F.
,
Jones, Peter G.
,
[Is it possible to mitigate greenhouse gas emissions in pastoral ecosystems of the tropics?]
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Is it possible to mitigate greenhouse gas emissions in pastoral ecosystems of the tropics?
The world s poorest and most vulnerable farmers on the whole have not benefited from international agricultural research and development. Past efforts have tried to increase the production of countries in more favourable environments; farmers with relatively higher potential for improvement benef...
Hyman, Glenn
,
Fujisaka, Sam
,
Jones, Peter G.
,
Wood, S.
,
Vicente, M.C. de
,
Dixon, John A.
,
[Strategic approaches to targeting technology generation: assessing the coincidence of poverty and drought-prone crop production]
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Strategic approaches to targeting technology generation: assessing the coincidence of poverty and drought-prone crop production