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Book Chapter 1992

Autor: Leeuw, P.N. de

As the problems of impact assessement are rather intractable, a fairly simple dual approach is proposed. First the major components of environmental impact of current agricultural production systems in Africa (i.e. impact of cropping, livestock keeping, fuelwood and timber extraction and burning)...

Enlace original: https://cgspace.cgiar.org/handle/10568/11112

Investigación en Agricultura
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Leeuw, P.N. de ,  [Impact potentiel sur l'environnement] ,  Impact potentiel sur l'environnement
Book Chapter 1992

Autor: Leeuw, P.N. de

As the problems of impact assessement are rather intractable, a fairly simple dual approach is proposed. First the major components of environmental impact of current agricultural production systems in Africa (i.e. impact of cropping, livestock keeping, fuelwood and timber extraction and burning)...

Enlace original: https://cgspace.cgiar.org/handle/10568/4373

Investigación en Agricultura
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Leeuw, P.N. de ,  [Potential environmental impacts] ,  Potential environmental impacts
Working Paper 1982

Autor: Leeuw, P.N. de Peacock, C.P.

Describes the research approach adopted by an interdisciplinary ILCA team to study a pastoralist production system, summarizing the methodology & results of research on small ruminants' productivity in the Maasai pastoral system, and outlining dif. features of current smallstock research in Kenya...

Enlace original: https://cgspace.cgiar.org/handle/10568/4375

Investigación en Agricultura
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Leeuw, P.N. de ,  Peacock, C.P. ,  [The productivity of small ruminants in the Maasai pastoral system, Kajiado District, Kenya. An introduction to current research] ,  The productivity of small ruminants in the Maasai pastoral system, Kajiado District, Kenya. An introduction to current research
Conference Proceedings 1994

Autor: Leeuw, P.N. de Mohamed-Saleem, M.A. Nyamu, A.M.

This report is divided into seven sections. The first section deals with biology of Stylosanthes and its importance in West Africa and Latin America. The second section presents papers on the screening and evaluation of Stylosanthes germplasm. This includes genetic diversity, genetic resources, s...

Enlace original: https://cgspace.cgiar.org/handle/10568/2720

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Leeuw, P.N. de ,  Mohamed-Saleem, M.A. ,  Nyamu, A.M. ,  [Stylosanthes as a forage and fallow crop. Proceedings of a regional workshop on the use of Stylosanthes in West Africa] ,  Stylosanthes as a forage and fallow crop. Proceedings of a regional workshop on the use of Stylosanthes in West Africa
Book 1999

Autor: Kristjanson, Patricia M. Rowlands, G.J. Swallow, B.M. Kruska, R.L. Leeuw, P.N. de Nagda, S.M.

This study illustrates how productivity impacts resulting from livestock research can be measured using a herd simulation model, how the results of this model can be extended spatially using geographic information systems (GIS) to determine the potential increase in livestock production that woul...

Enlace original: https://cgspace.cgiar.org/handle/10568/498

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Kristjanson, Patricia M. ,  Rowlands, G.J. ,  Swallow, B.M. ,  Kruska, R.L. ,  Leeuw, P.N. de ,  Nagda, S.M. ,  [Using the economic surplus model to measure potential returns to international livestock research. The case of trypanosomosis vaccine research] ,  Using the economic surplus model to measure potential returns to international livestock research. The case of trypanosomosis vaccine research
Conference Paper 1988

Autor: Tessema, S. Emojong, E.E. Maluti, M. Leeuw, P.N. de
Enlace original: https://cgspace.cgiar.org/handle/10568/49876

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Tessema, S. ,  Emojong, E.E. ,  Maluti, M. ,  Leeuw, P.N. de ,  [A strategy of livestock research adapted to semi-arid small-scale mixed farming system - The Katumani experience] ,  A strategy of livestock research adapted to semi-arid small-scale mixed farming system - The Katumani experience
Journal Article 1999

Autor: Kristjanson, Patricia M. Swallow, B.M. Rowlands, G.J. Kruska, R.L. Leeuw, P.N. de

This paper addresses issues surrounding measurment of the potential productivity gains from new livestock technologies and the returns to international livestock research. The approach, applicable to many livestock production constraints and technologies, uses geographic information systems (GIS)...

Enlace original: https://cgspace.cgiar.org/handle/10568/30008

Investigación en Agricultura
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Kristjanson, Patricia M. ,  Swallow, B.M. ,  Rowlands, G.J. ,  Kruska, R.L. ,  Leeuw, P.N. de ,  [Measuring the costs of African animal trypanosomosis, the potential benefits of control and returns to research] ,  Measuring the costs of African animal trypanosomosis, the potential benefits of control and returns to research
Conference Paper 1983

Autor: Milligan, K. Leeuw, P.N. de

Discusses how low level aerial survey can be used to diagnose constraints within pastoral systems and the relative cost effectiveness of such operations, with particular reference to flight & sample procedures and information collection and analysis; presents some results from low-altitutde aeria...

Enlace original: https://cgspace.cgiar.org/handle/10568/50027

Investigación en Agricultura
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Milligan, K. ,  Leeuw, P.N. de ,  [Low altitude aerial surveys in pastoral systems research] ,  Low altitude aerial surveys in pastoral systems research
Conference Paper 1983

Autor: Leeuw, P.N. de Milligan, K.

Reviews most recent applications of methodologies for resource surveys appropriate to pastoral & agro-pastoral regions in Africa, with particular reference to remote sensing methodologies, viz. satellite imagery, aerial photography, side-looking radar (SLR), spectral radiance and low-altitutde ae...

Enlace original: https://cgspace.cgiar.org/handle/10568/50021

Investigación en Agricultura
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Leeuw, P.N. de ,  Milligan, K. ,  [Integration of remote sensing techniques for resource evaluation in pastoral systems research] ,  Integration of remote sensing techniques for resource evaluation in pastoral systems research
Conference Paper 1986

Autor: Agishi, E.C. Leeuw, P.N. de

Summarises the performance of three species of stylosanthes, viz, S. guianensis cvs Cook and Schofield, S. hamata cv. Verano and S. humilis under different production systems in Nigeria, such as in pure legume pastures, mixed pastures, with crops, in rangeland and under seed production.

Enlace original: https://cgspace.cgiar.org/handle/10568/49936

Investigación en Agricultura
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Agishi, E.C. ,  Leeuw, P.N. de ,  [The performance of stylosanthes species in different production systems in Nigeria] ,  The performance of stylosanthes species in different production systems in Nigeria

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