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Report 2017

Autor: Sommer, Rolf Gholkar, Madhav Kumbhar, Nitin

Rationale The Soil Protection and Rehabilitation for Food Security global program, commissioned by the German Federal Ministry for Economic Cooperation and Development (BMZ) and implemented by GIZ and partners in Benin, Burkina Faso, Ethiopia, India and Kenya, addresses the issue of soil degrada...

Enlace original: https://cgspace.cgiar.org/handle/10568/89840

Investigación en Agricultura
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Sommer, Rolf ,  Gholkar, Madhav ,  Kumbhar, Nitin ,  [Yield and soil nitrous oxide emissions of Vigna radiata under contrasting fertilizer management practices in Maharashtra, India] ,  Yield and soil nitrous oxide emissions of Vigna radiata under contrasting fertilizer management practices in Maharashtra, India
Journal Article 2017

Autor: Ntukamazina, Nepomuscene Onwonga, Richard N. Sommer, Rolf Mukankusi, Clare Mugisha Mburu, John Rubyogo, Jean-Claude

Water stress is a major crop production constraint for common bean (Phaseolus vulgaris L). The response of bush and climbing bean to excessive and minimal soil moisture at various plant growth stages was investigated under greenhouse for two growing periods; September-February 2016 and March-July...

Enlace original: https://cgspace.cgiar.org/handle/10568/83334

Investigación en Agricultura
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Ntukamazina, Nepomuscene ,  Onwonga, Richard N. ,  Sommer, Rolf ,  Mukankusi, Clare Mugisha ,  Mburu, John ,  Rubyogo, Jean-Claude ,  [Effect of excessive and minimal soil moisture stress on agronomic performance of bush and climbing bean (Phaseolus vulgaris L.)] ,  Effect of excessive and minimal soil moisture stress on agronomic performance of bush and climbing bean (Phaseolus vulgaris L.)
Poster 2017

Autor: Sommer, Rolf Kihara, Job Ketter, Christina Smith, Georgina
Enlace original: https://cgspace.cgiar.org/handle/10568/88043

Investigación en Agricultura
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Sommer, Rolf ,  Kihara, Job ,  Ketter, Christina ,  Smith, Georgina ,  [Tropical soils can help us make agriculture carbon neutral and meet climate targets] ,  Tropical soils can help us make agriculture carbon neutral and meet climate targets
Working Paper 2015-12

Autor: Paul, Birthe K. Birnholz, Celine A. Timler, Carl J. Michalscheck, Mirja Koge, J. Groot, Jeroen C.J. Sommer, Rolf
Enlace original: https://cgspace.cgiar.org/handle/10568/69149

Investigación en Agricultura
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Paul, Birthe K. ,  Birnholz, Celine A. ,  Timler, Carl J. ,  Michalscheck, Mirja ,  Koge, J. ,  Groot, Jeroen C.J. ,  Sommer, Rolf ,  [Assessing and improving organic matter, nutrient dynamics and profitability of smallholder farms in Ethiopia and Kenya: proof of concept of using the whole farm model FarmDESIGN for prioritization of GIZ development interventions] ,  Assessing and improving organic matter, nutrient dynamics and profitability of smallholder farms in Ethiopia and Kenya: proof of concept of using the whole farm model FarmDESIGN for prioritization of GIZ development interventions
Journal Article 2018

Autor: Margenot, Andrew J. Sommer, Rolf Parikh, Sanjai J.
Enlace original: https://cgspace.cgiar.org/handle/10568/92926

Investigación en Agricultura
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Margenot, Andrew J. ,  Sommer, Rolf ,  Parikh, Sanjai J. ,  [Soil Phosphatase Activities across a Liming Gradient under Long-Term Managements in Kenya] ,  Soil Phosphatase Activities across a Liming Gradient under Long-Term Managements in Kenya
Presentation 2017

Autor: Sommer, Rolf Silva, Mayesse A. da Söderström, Mats Piikki, Kristin Mukalama, John Mutua, John Kihara, Job Desta, Lulseged Tamene Desta, Evan Verchot, Louis V.

CIAT Soil Carbon Sequestration Research by Rolf Sommer, CGIAR Research Program on Water, Land and Ecosystems. Presentation made at Soil Carbon Sequestration: Supporting NDCs and donor action. A CGIAR-wide workshop held 12 Nov 2017 at ZEF Center for Development Research, University of Bonn. Works...

Enlace original: https://cgspace.cgiar.org/handle/10568/92099

Investigación en Agricultura
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Sommer, Rolf ,  Silva, Mayesse A. da ,  Söderström, Mats ,  Piikki, Kristin ,  Mukalama, John ,  Mutua, John ,  Kihara, Job ,  Desta, Lulseged Tamene ,  Desta, Evan ,  Verchot, Louis V. ,  [CIAT Soil Carbon Sequestration Research] ,  CIAT Soil Carbon Sequestration Research
Dataset 2019-07-02

Autor: Piikki, Kristin Söderström, Mats Sommer, Rolf Silva, Mayesse da

General: Lab determined topsoil bulk density, contents of sand, clay and organic carbon in Murugusi, W. Kenya, together with spatial coordinates of where the soil samples were taken (rounded to the closest center point of a 250 m × 250 m raster). All lab analyses were carried out at the ILRI/CIAT...

Enlace original: https://cgspace.cgiar.org/handle/10568/102151

Investigación en Agricultura
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Piikki, Kristin ,  Söderström, Mats ,  Sommer, Rolf ,  Silva, Mayesse da ,  [Physical topsoil properties in Murugusi, Western Kenya] ,  Physical topsoil properties in Murugusi, Western Kenya
Working Paper 2018-10

Autor: Kihara, Job Bolo, Peter Omondi Ayaga, George Mukulama, John Margenot, Andrew J. Sommer, Rolf

The provision of food requirements for current and future generations can be guaranteed through agricultural intensification options that safeguard the production resource base. Over the years, the debate on sustainable agricultural intensification has not been matched with due regard to how the ...

Enlace original: https://cgspace.cgiar.org/handle/10568/97847

Investigación en Agricultura
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Kihara, Job ,  Bolo, Peter Omondi ,  Ayaga, George ,  Mukulama, John ,  Margenot, Andrew J. ,  Sommer, Rolf ,  [Agronomic management controls microbial populations in soils of western Kenya] ,  Agronomic management controls microbial populations in soils of western Kenya
Journal Article 2017-08-11

Autor: Margenot, Andrew J. Sommer, Rolf Mukalama, John Parikh, Sanjai J.

Phosphate rock (PR) is an alternative fertilizer to increase the P content of P-deficient weathered soils. We evaluated the effects of fertilizer form on indicators of biological cycling of P using an on-farm trial on a Rhodic Kandiudox in western Kenya. Treatment plots were sampled after 13 crop...

Enlace original: https://cgspace.cgiar.org/handle/10568/83158

Investigación en Agricultura
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Margenot, Andrew J. ,  Sommer, Rolf ,  Mukalama, John ,  Parikh, Sanjai J. ,  [Biological P cycling is influenced by the form of P fertilizer in an Oxisol] ,  Biological P cycling is influenced by the form of P fertilizer in an Oxisol

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