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Journal Article 2007

Autor: Ojiem, JO Vanlauwe, Bernard Ridder, N.A. de Giller, Ken E.

Nitrogen (N) deficiency is a major constraint to the productivity of the African smallholder farming systems. Grain, green manure and forage legumes have the potential to improve the soil N fertility of smallholder farming systems through biological N2-fixation. The N2-fixation of bean (Phaseolus...

Enlace original: https://cgspace.cgiar.org/handle/10568/43889

Investigación en Agricultura
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Ojiem, JO ,  Vanlauwe, Bernard ,  Ridder, N.A. de ,  Giller, Ken E. ,  [Niche-based assessment of contributions of legumes to the nitrogen economy of Western Kenya smallholder farms] ,  Niche-based assessment of contributions of legumes to the nitrogen economy of Western Kenya smallholder farms
Journal Article 2012

Autor: Guto, Samuel Ridder, N.A. de Giller, Ken E. Pypers, Pieter Vanlauwe, Bernard

The sub-humid zone of Central Kenya is water deficient due to regular intra-seasonal dry spells that constrain rain-fed crop production. A study was initiated to investigate the effects of minimum tillage and vegetative barriers on soil and water conservation and crop yield. There were two tillag...

Enlace original: https://cgspace.cgiar.org/handle/10568/43860

Investigación en Agricultura
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Guto, Samuel ,  Ridder, N.A. de ,  Giller, Ken E. ,  Pypers, Pieter ,  Vanlauwe, Bernard ,  [Minimum tillage and vegetative barrier effects on crop yields in relation to soil water content in the Central Kenya highlands] ,  Minimum tillage and vegetative barrier effects on crop yields in relation to soil water content in the Central Kenya highlands
Journal Article 2010-03-04

Autor: Karanja Ng'ang'a, Stanley Kungu, J. Ridder, N.A. de Herrero, Mario T.

Production inefficiency is usually analyzed by economical efficiency, which is composed of two components-technical and allocative efficiencies. This study provided a direct measure of production efficiency of the smallholder milk producers in Kenya using a stochastic profit frontier and ineffici...

Enlace original: https://cgspace.cgiar.org/handle/10568/2314

Investigación en Agricultura
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Karanja Ng'ang'a, Stanley ,  Kungu, J. ,  Ridder, N.A. de ,  Herrero, Mario T. ,  [Profit efficiency among Kenyan smallholders milk producers: A case study of Meru-South district, Kenya] ,  Profit efficiency among Kenyan smallholders milk producers: A case study of Meru-South district, Kenya
Journal Article 1986

Autor: Ridder, N.A. de Benjamin, R.W. Keulen, H. van
Enlace original: https://cgspace.cgiar.org/handle/10568/28877

Investigación en Agricultura
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Ridder, N.A. de ,  Benjamin, R.W. ,  Keulen, H. van ,  [Forage selection and performance of sheep grazing dry annual range] ,  Forage selection and performance of sheep grazing dry annual range
Journal Article 2011

Autor: Guiller, KE Tittonell, Pablo A. Rufino, Mariana C. Wijk, Mark T. van Zingore, Shamie Mapfumo, Paul Adjei-Nsiah, Samuel Herrero, Mario T. Chikowo, Regis Corbeels, Marc Rowe, EC Baijukya, Frederick P. Mwijage, A Smith, J. Yeboah, E. Burg, W.J. van der Sanogo, O.M. Misiko, Michael T. Ridder, N.A. de Karanja, S. Kaizzi, C Kungu, J. Mwale, M Nwaga, D Pacini, C. Vanlauwe, Bernard

African farming systems are highly heterogeneous: between agroecological and socioeconomic environments, in the wide variability in farmers’ resource endowments and in farm management. This means that single solutions (or ‘silver bullets’) for improving farm productivity do not exist. Yet to date...

Enlace original: https://cgspace.cgiar.org/handle/10568/43277

Investigación en Agricultura
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Guiller, KE ,  Tittonell, Pablo A. ,  Rufino, Mariana C. ,  Wijk, Mark T. van ,  Zingore, Shamie ,  Mapfumo, Paul ,  Adjei-Nsiah, Samuel ,  Herrero, Mario T. ,  Chikowo, Regis ,  Corbeels, Marc ,  Rowe, EC ,  Baijukya, Frederick P. ,  Mwijage, A ,  Smith, J. ,  Yeboah, E. ,  Burg, W.J. van der ,  Sanogo, O.M. ,  Misiko, Michael T. ,  Ridder, N.A. de ,  Karanja, S. ,  Kaizzi, C ,  Kungu, J. ,  Mwale, M ,  Nwaga, D ,  Pacini, C. ,  Vanlauwe, Bernard ,  [Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development] ,  Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development
Journal Article 2014

Autor: Ojiem, J.O. Franke, A.C. Vanlauwe, Bernard Ridder, N.A. de Giller, Ken E.

Agricultural intensification of farming systems in sub-Saharan Africa is a prerequisite to alleviate rural poverty and improve livelihoods. Legumes have shown great potential to enhance system productivity. On-farm experiments were conducted in different agro-ecological zones (AEZ) in Western Ken...

Enlace original: https://cgspace.cgiar.org/handle/10568/76061

Investigación en Agricultura
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Ojiem, J.O. ,  Franke, A.C. ,  Vanlauwe, Bernard ,  Ridder, N.A. de ,  Giller, Ken E. ,  [Benefits of legumemaize rotations: assessing the impact of diversity on the productivity of smallholders in Western Kenya] ,  Benefits of legumemaize rotations: assessing the impact of diversity on the productivity of smallholders in Western Kenya
Journal Article 1986

Autor: Ridder, N.A. de Wagenaar, K.T.

Compares energy and crude protein balances of cattle in traditional and ranching systems in eastern Botswana. Considers animal gross energy produced per unit, productivity at different stocking rates, liveweight, biological efficiency and pasture degradation & drought. Shows calculations of gross...

Enlace original: https://cgspace.cgiar.org/handle/10568/28106

Investigación en Agricultura
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Ridder, N.A. de ,  Wagenaar, K.T. ,  [Energy and protein balances in traditional livestock systems and ranching in eastern Botswana] ,  Energy and protein balances in traditional livestock systems and ranching in eastern Botswana
Journal Article 1987

Autor: Bourn, D.M. Denda, I. Ridder, N.A. de Wagenaar, K.T. Wint, W.

Discusses, based on aerial surveys taken before and after the drought, the magnitude of population changes, both human & animal, that took place in west Central Niger during the drought and how the drought has affected different ethnic groups. Includes data on estimates of livestock population & ...

Enlace original: https://cgspace.cgiar.org/handle/10568/10923

Investigación en Agricultura
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Bourn, D.M. ,  Denda, I. ,  Ridder, N.A. de ,  Wagenaar, K.T. ,  Wint, W. ,  [Secheresse et exode pastoral au Niger] ,  Secheresse et exode pastoral au Niger
Journal Article 2010

Autor: Ebanyat, Peter Ridder, N.A. de Jager, A. de Delve, Robert J. Bekunda, Mateete A. Giller, Ken E.
Enlace original: https://cgspace.cgiar.org/handle/10568/42754

Investigación en Agricultura
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Ebanyat, Peter ,  Ridder, N.A. de ,  Jager, A. de ,  Delve, Robert J. ,  Bekunda, Mateete A. ,  Giller, Ken E. ,  [Drivers of land use change and household determinants of sustainability in smallholder farming systems of Eastern Uganda] ,  Drivers of land use change and household determinants of sustainability in smallholder farming systems of Eastern Uganda
Journal Article 2009-10-10

Autor: Wijk, Mark T. van Tittonell, Pablo A. Rufino, Mariana C. Herrero, Mario T. Pacini, C. Ridder, N.A. de Giller, Ken E.

African smallholder farming systems are complex, dynamic systems with many interacting biophysical subcomponents. In these systems the major inputs and outputs are managed by human agency – the farmers. To analyse potential developmental pathways of smallholder farming systems in sub-Saharan Afri...

Enlace original: https://cgspace.cgiar.org/handle/10568/387

Investigación en Agricultura
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Wijk, Mark T. van ,  Tittonell, Pablo A. ,  Rufino, Mariana C. ,  Herrero, Mario T. ,  Pacini, C. ,  Ridder, N.A. de ,  Giller, Ken E. ,  [Identifying key entry-points for strategic management of smallholder farming systems in sub-Saharan Africa using the dynamic farm-scale simulation model NUANCES-FARMSIM] ,  Identifying key entry-points for strategic management of smallholder farming systems in sub-Saharan Africa using the dynamic farm-scale simulation model NUANCES-FARMSIM

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