Descubre y comparte nuestro conocimiento público

Se han encontrado 55 recursos

Resultados de búsqueda

Journal Article 1985

Autor: King, J.M. Sayers, A.R. Chara, P. Leeuw, P.N. de Peacock, C.P.

Describes use of low - level aeral census in counting livestock in Kenya's Maasailand Group Ranches, concentrating on survey designs & efforts made to improve reliability of population estimates, Compares efficiency & precision of aerial & ground counts.

Enlace original: https://cgspace.cgiar.org/handle/10568/28088

Investigación en Agricultura
Enlace permanente
King, J.M. ,  Sayers, A.R. ,  Chara, P. ,  Leeuw, P.N. de ,  Peacock, C.P. ,  [Improving aerial counts of Maasai livestock] ,  Improving aerial counts of Maasai livestock
Journal Article 1994

Autor: Hiernaux, Pierre H.Y. Leeuw, P.N. de Diarra, L.

Plant density and tiller cunts were done in several Sahelian rangelands in Mali, under a variety of soil, rainfall and grazing situations. Numeric models were developed to explain the dynamic relationship between grass tillering and herb density. Tests of application of these models to the plant ...

Enlace original: https://cgspace.cgiar.org/handle/10568/28095

Investigación en Agricultura
Enlace permanente
Hiernaux, Pierre H.Y. ,  Leeuw, P.N. de ,  Diarra, L. ,  [Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics] ,  Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics
Journal Article 1989

Autor: Leeuw, P.N. de Mureithi, J.G.

Discusses a practical non-destructive sampling procedure of experimental Napier grass populations (Pennisetum purpureum) which is determined by the number of stools per row of planted Napier grass, the number of tillers per stool and the number, height and thickness of each tiller, the latter bei...

Enlace original: https://cgspace.cgiar.org/handle/10568/4574

Investigación en Agricultura
Enlace permanente
Leeuw, P.N. de ,  Mureithi, J.G. ,  [Sampling procedures of experimental Napier grass populations] ,  Sampling procedures of experimental Napier grass populations
Working Paper 1978

Autor: Leeuw, P.N. de Magaji, S.O.

Presents results of a survey to reconnaitre the physiography and woody & herbaceous vegetation cover, determine forage production & estimate carrying capacity of the Kachia Grazing Reserve, Kaduna State, Nigeria, w. an appendix on types & relative abundance of perennial & annual grasses in the 8 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/4374

Investigación en Agricultura
Enlace permanente
Leeuw, P.N. de ,  Magaji, S.O. ,  [A reconnaissance survey of the Kachia grazing reserve, Kaduna state, Nigeria] ,  A reconnaissance survey of the Kachia grazing reserve, Kaduna state, Nigeria
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
Enlace permanente
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
Enlace permanente
Leeuw, P.N. de ,  [Potential environmental impacts] ,  Potential environmental impacts
Conference Paper 1995

Autor: Leeuw, P.N. de Reid, Robin S.

The impact of human endeavours on the environment in the struggle to eke out a living through crop and animal agriculture is examined in a holistic context. Analyses focus on all the sources of pressure that modify the vegetation cover of rural Africa, including the effects of fires and burning o...

Enlace original: https://cgspace.cgiar.org/handle/10568/49990

Investigación en Agricultura
Enlace permanente

Leeuw, P.N. de ,  Reid, Robin S. ,  [Impact of human activities and livestock on the African environment: An attempt to partition the pressure] ,  Impact of human activities and livestock on the African environment: An attempt to partition the pressure
Conference Paper 1988

Autor: Leeuw, P.N. de Nyambaka, R.
Enlace original: https://cgspace.cgiar.org/handle/10568/49882

Investigación en Agricultura
Enlace permanente
Leeuw, P.N. de ,  Nyambaka, R. ,  [The prediction of rangeland production from rainfall data in arid and semi-arid eastern Africa] ,  The prediction of rangeland production from rainfall data in arid and semi-arid eastern Africa
Book Chapter 1996

Autor: Ndikumana, J. Leeuw, P.N. de

In tropical Africa, the most common and most extensively evaluated Brachiaria species as cultivated pastures are B. brizantha, B. ruziziensis, B. decumbens, and B. mutica. In recent years, B. dictyoneura cv. Llanero, B. humidicola, and B. platynota have also received increased attention. The firs...

Enlace original: https://cgspace.cgiar.org/handle/10568/82038

Investigación en Agricultura
Enlace permanente

Ndikumana, J. ,  Leeuw, P.N. de ,  [Regional experience with Brachiaria: Sub-Saharan Africa] ,  Regional experience with Brachiaria: Sub-Saharan Africa
Journal Article 1995

Autor: Leeuw, P.N. de McDermott, John J. Lebbie, S.H.B.

We begin by stressing that relevant and adequate information is an essential ingredient of efficient decision-making processes aimed at optimising the performance of livestock enterprises. Such decisions are universally made, so that though different approaches may be required, animal health and ...

Enlace original: https://cgspace.cgiar.org/handle/10568/29511

Investigación en Agricultura
Enlace permanente
Leeuw, P.N. de ,  McDermott, John J. ,  Lebbie, S.H.B. ,  [Monitoring of livestock health and production in sub-Saharan Africa] ,  Monitoring of livestock health and production in sub-Saharan Africa

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso
Marcar todos
Limpiar todo