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Journal Article 2019-12

Autor: Gitari, H.I. Nyawade, S. Kamau, S. Karanja, N.N. Gachene, C.K.K. Schulte-Geldermann, Elmar

Phosphorus (P) is an essential element and its efficient use is of global importance. This study evaluated the effect of growing potato under legume intercrops on P uptake and use efficiency indices: P harvest index (PHI), P uptake efficiency (PuPE), P partial factor productivity (PPFP) and P par...

Enlace original: https://cgspace.cgiar.org/handle/10568/106273

Investigación en Agricultura
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Gitari, H.I. ,  Nyawade, S. ,  Kamau, S. ,  Karanja, N.N. ,  Gachene, C.K.K. ,  Schulte-Geldermann, Elmar ,  [Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops.] ,  Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops.
Book Chapter 2020

Autor: Forbes, G. Charkowski A Andrade-Piedra, J.L. Parker, M. Schulte-Geldermann, Elmar

Good quality seed is almost universally considered a requirement for high productivity in all potato production systems. Much of the yield gap currently constraining productivity in low-income countries is attributed to the poor quality of seed. Potato seed sector development is thus a major conc...

Enlace original: https://cgspace.cgiar.org/handle/10568/106180

Investigación en Agricultura
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Forbes, G. ,  Charkowski A ,  Andrade-Piedra, J.L. ,  Parker, M. ,  Schulte-Geldermann, Elmar ,  [Potato seed systems.] ,  Potato seed systems.
Poster 2012

Autor: Atieno, E. Schulte-Geldermann, Elmar Narla, R.

Conventional potato production is not possible without fungicide and the commonly used fungicides are expensive and are considered as environmental and human hazards. The aim of the experiment was to evaluate the efficacy of Phosphonate fungicides, the potential of combination with potato cultiva...

Enlace original: https://cgspace.cgiar.org/handle/10568/66295

Investigación en Agricultura
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Atieno, E. ,  Schulte-Geldermann, Elmar ,  Narla, R. ,  [Integrating varietal resistance and phosphonate fungicide in management of foliar late blight in potato] ,  Integrating varietal resistance and phosphonate fungicide in management of foliar late blight in potato
Journal Article 2018-09-15

Autor: Nyawade, Shadrack Karanja, Nancy M. Gachene, Charles Parker, Monica Schulte-Geldermann, Elmar

Soil organic matter (SOM) losses due to soil erosion may be considered low in continuous potato (Solanum tuberosum L.) cropping systems, but cumulated over time may cause considerable soil degradation. A field study was conducted in Kabete, Kenya, during the 2014 to 2015 rainy seasons to determin...

Enlace original: https://cgspace.cgiar.org/handle/10568/100250

Investigación en Agricultura
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Nyawade, Shadrack ,  Karanja, Nancy M. ,  Gachene, Charles ,  Parker, Monica ,  Schulte-Geldermann, Elmar ,  [Susceptibility of soil organic matter fractions to soil erosion under potato-legume intercropping systems in central Kenya] ,  Susceptibility of soil organic matter fractions to soil erosion under potato-legume intercropping systems in central Kenya
Conference Paper Abstract 2015-11-25

Autor: Atieno, E. Schulte-Geldermann, Elmar Parker, M. Kreuse, T. Brenneis, K. Muchoki, J.

In Kenya, smallholder potato farmers endeavor to increase their production through various approaches, most commonly by expanding areas under production and repeatedly planting potato on the same site, with the latter resulting in build-up of diseases. Compounded with limited access to options to...

Enlace original: https://cgspace.cgiar.org/handle/10568/69082

Investigación en Agricultura
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Atieno, E. ,  Schulte-Geldermann, Elmar ,  Parker, M. ,  Kreuse, T. ,  Brenneis, K. ,  Muchoki, J. ,  [Evaluation of adoption potential of modern technologies in potato value chain by smallholder farmers in Kenya: Nyandarua County pilot case study.] ,  Evaluation of adoption potential of modern technologies in potato value chain by smallholder farmers in Kenya: Nyandarua County pilot case study.
Journal Article 2018-08

Autor: Aguk, J.A. Karanja, N. Schulte-Geldermann, Elmar Bruns, C. Kinyua, Z. Parker, M.

Bacterial wilt disease, race 3 biovar 2A, is a devastating disease of potato and other important solanaceous crops, with no chemical control method. The current studies were, therefore, undertaken to assess the efficacy of biocontrol agent (BCA) and organic amendments to manage bacterial wilt (BW...

Enlace original: https://cgspace.cgiar.org/handle/10568/98364

Investigación en Agricultura
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Aguk, J.A. ,  Karanja, N. ,  Schulte-Geldermann, Elmar ,  Bruns, C. ,  Kinyua, Z. ,  Parker, M. ,  [Control of bacterial wilt (Ralstonia solanacearum) in potato (Solanum tuberosum) using rhizobacteria and arbuscular mycorrhiza fungi.] ,  Control of bacterial wilt (Ralstonia solanacearum) in potato (Solanum tuberosum) using rhizobacteria and arbuscular mycorrhiza fungi.
Book Chapter 2015

Autor: Demo, P. Lemaga, B. Kakuhenzire, R. Schulz, S. Borus, D. Barker, Ian Woldegiorgis, G. Parker, M. Schulte-Geldermann, Elmar
Enlace original: https://cgspace.cgiar.org/handle/10568/72564

Investigación en Agricultura
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Demo, P. ,  Lemaga, B. ,  Kakuhenzire, R. ,  Schulz, S. ,  Borus, D. ,  Barker, Ian ,  Woldegiorgis, G. ,  Parker, M. ,  Schulte-Geldermann, Elmar ,  [Strategies to improve seed potato quality and supply in sub-Saharan Africa: Experience from interventions in five countries.] ,  Strategies to improve seed potato quality and supply in sub-Saharan Africa: Experience from interventions in five countries.
Book Chapter 2015

Autor: Lung'aho, C. Kipkoech, D. Ng'ang'a, N. Kaguongo, W. Nyongesa, M. Schulte-Geldermann, Elmar
Enlace original: https://cgspace.cgiar.org/handle/10568/72577

Investigación en Agricultura
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Lung'aho, C. ,  Kipkoech, D. ,  Ng'ang'a, N. ,  Kaguongo, W. ,  Nyongesa, M. ,  Schulte-Geldermann, Elmar ,  [Unlocking the potential of the potato subsector in Kenya - a roadmap for revitalizing the subsector.] ,  Unlocking the potential of the potato subsector in Kenya - a roadmap for revitalizing the subsector.
Conference Paper 2014

Autor: Aguk, J. Schulte-Geldermann, Elmar Karanja, K. Kinyua, Z.M. Jefwa, J.M. Parker, M.

Bacterial wilt is an important soil borne disease that threatens potato production. It is difficult to control due to the large number of hosts, high genetic and phenotypic variability of the pathogen, systemic localization of the pathogen, and lack of chemical control. Use of antagonistic microo...

Enlace original: https://cgspace.cgiar.org/handle/10568/67140

Investigación en Agricultura
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Aguk, J. ,  Schulte-Geldermann, Elmar ,  Karanja, K. ,  Kinyua, Z.M. ,  Jefwa, J.M. ,  Parker, M. ,  [Application of rhizobacteria inoculants in biocontrol of Bacterial wilt (Ralstonia solanacearum) in potato (Solaum tuberosum) production.] ,  Application of rhizobacteria inoculants in biocontrol of Bacterial wilt (Ralstonia solanacearum) in potato (Solaum tuberosum) production.
Book Chapter 2015

Autor: Kinyua, Z.M. Schulte-Geldermann, Elmar Namugga, P. Ochieng-Obura, B Tindimubona, S. Bararyenya, A. Kashaija, I.N. Rwomushana, I. Opio, F.
Enlace original: https://cgspace.cgiar.org/handle/10568/72567

Investigación en Agricultura
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Kinyua, Z.M. ,  Schulte-Geldermann, Elmar ,  Namugga, P. ,  Ochieng-Obura, B ,  Tindimubona, S. ,  Bararyenya, A. ,  Kashaija, I.N. ,  Rwomushana, I. ,  Opio, F. ,  [Adaptation and improvement of the seed-plot technique in smallholder potato production.] ,  Adaptation and improvement of the seed-plot technique in smallholder potato production.

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