Descubre y comparte nuestro conocimiento público

Se han encontrado 30 recursos

Resultados de búsqueda

Journal Article 2006

Autor: Ojiambo, P.S. Scherm, H.

In a 3-year field study, Premier rabbiteye blueberry plants were sampled at three hierarchical levels (leaf, shoot, and bush) to assess severity of Septoria leaf spot (caused by Septoria al- bopunctata) and incidence of defoliation. A positive linear relationship (R2= 0.977, P< 0.0001, n = 2127) ...

Enlace original: https://cgspace.cgiar.org/handle/10568/99936

Investigación en Agricultura
Enlace permanente
Ojiambo, P.S. ,  Scherm, H. ,  [Optimum sample size for determining disease severity and defoliation associated with Septoria leaf spot of blueberry] ,  Optimum sample size for determining disease severity and defoliation associated with Septoria leaf spot of blueberry
Journal Article 2011

Autor: Rios, A.A. Kroschel, J.
Enlace original: https://cgspace.cgiar.org/handle/10568/67712

Investigación en Agricultura
Enlace permanente
Rios, A.A. ,  Kroschel, J. ,  [Evaluation and implications of Andean potato weevil infestation sources for its management in the Andean region.] ,  Evaluation and implications of Andean potato weevil infestation sources for its management in the Andean region.
Journal Article 2012

Autor: Kissa, D.O. Sheil, D.

Good density estimates for low abundance tree species are costly to achieve especially in rugged or disturbed forest landscapes. More efficient methods would be of considerable value to managers and conservationists. Here we assess a method that has been neglected in this context. We examine and ...

Enlace original: https://cgspace.cgiar.org/handle/10568/20926

Investigación en Agricultura
Enlace permanente
Kissa, D.O. ,  Sheil, D. ,  [Visual detection based distance sampling offers efficient density estimation for distinctive low abundance tropical forest tree species in complex terrain] ,  Visual detection based distance sampling offers efficient density estimation for distinctive low abundance tropical forest tree species in complex terrain
Journal Article 2006

Autor: Ogutu, J. Bhola, N. Piepho, Hans-Peter Reid, Robin S.

Effective management and conservation of wildlife populations require reliable estimates of population size, which can be difficult and costly to obtain. We evaluated how precision in estimates of herd size and abundance varies with sample size and strip width using two field surveys and bootstra...

Enlace original: https://cgspace.cgiar.org/handle/10568/33026

Investigación en Agricultura
Enlace permanente
Ogutu, J. ,  Bhola, N. ,  Piepho, Hans-Peter ,  Reid, Robin S. ,  [Efficiency of strip- and line-transect surveys of African savanna mammals] ,  Efficiency of strip- and line-transect surveys of African savanna mammals
Journal Article 2016-10

Autor: Okiro, L.A. Nyanjom, S.G. Parker, M.

Bacterial wilt caused by Ralstonia solanacearum is considered among the most damaging diseases of potato in Sub-Saharan Africa. In Kenya, majority of farmers visually select and save seed from harvested potato tubers and reuse the same tubers for several seasons. Latently infected seed tubers whi...

Enlace original: https://cgspace.cgiar.org/handle/10568/81125

Investigación en Agricultura
Enlace permanente

Okiro, L.A. ,  Nyanjom, S.G. ,  Parker, M. ,  [Coring method of sampling potato tubers to detect ralstonia solanacearum.] ,  Coring method of sampling potato tubers to detect ralstonia solanacearum.
Journal Article 2005

Autor: Ephraim, E. Odenyo, A.A. Ashenafi, M.

Tannins limit the use of fodder trees as feed for ruminants. Removal of the effects of tannins would thus improve the nutritional quality of these trees. This prompted the study to evaluate the effect of rumen or faecal mixed cultures from different animals on tannin degradation. Tannin extracts,...

Enlace original: https://cgspace.cgiar.org/handle/10568/33268

Investigación en Agricultura
Enlace permanente
Ephraim, E. ,  Odenyo, A.A. ,  Ashenafi, M. ,  [Screening for tannin degradation by rumen and faecal samples of wild and domestic animals in Ethiopia] ,  Screening for tannin degradation by rumen and faecal samples of wild and domestic animals in Ethiopia
Journal Article 2001

Autor: Sheil, Douglas

The relationship between succession and tropical forest diversity has been much debated. A fundamental disagreement hinges on whether high local species richness is a transient successional property, albeit one that can be maintained by disturbance, or is rather a property of stable late successi...

Enlace original: https://cgspace.cgiar.org/handle/10568/18463

Investigación en Agricultura
Enlace permanente
Sheil, Douglas ,  [Long-term observations of rain forest succession, tree diversity and responses to disturbance] ,  Long-term observations of rain forest succession, tree diversity and responses to disturbance
Journal Article 1996

Autor: Rege, J.E.O. Sherington, J.

The maximum likelihood parameters estimated in logistic analysis are in terms of a transformation of the original response variable and, although inferences are easily made about the sources of variation in the linearized model using standard procedures applied in regression analysis, the varianc...

Enlace original: https://cgspace.cgiar.org/handle/10568/28452

Investigación en Agricultura
Enlace permanente
Rege, J.E.O. ,  Sherington, J. ,  [A method for estimating sampling variances of predicted probabilities from maximum likelihood estimates in logit response function] ,  A method for estimating sampling variances of predicted probabilities from maximum likelihood estimates in logit response function
Journal Article 1992

Autor: Bekele, T. Kasali, O.B. Wolde-Mariam, W.A.

Presents a study conducted in five different sites, Debre Berhan, Dejen, Deneba, Tulu Meko and Wereilu in the highlands of Ethiopia, from June 1988 to December 1989, to determine the prevalences of endoparasites of the highland sheep in Ethiopia. Analyses data to determine nematode log egg counts...

Enlace original: https://cgspace.cgiar.org/handle/10568/29528

Investigación en Agricultura
Enlace permanente
Bekele, T. ,  Kasali, O.B. ,  Wolde-Mariam, W.A. ,  [Endoparasite prevalences of the highland sheep in Ethiopia] ,  Endoparasite prevalences of the highland sheep in Ethiopia
Journal Article 2016

Autor: Piikki, Kristin Söderström, Mats Eriksson, Jan Muturi, John Jamleck Muthee, Patrick Ireri Wetterlind, Johanna Lund, Eric

Four proximal soil sensors were tested at four smallholder farms in Embu County, Kenya: a portable X-ray fluorescence sensor (PXRF), a mobile phone application for soil color determination by photography, a dual-depth electromagnetic induction (EMI) sensor, and a LED-based soil optical reflectanc...

Enlace original: https://cgspace.cgiar.org/handle/10568/78258

Investigación en Agricultura
Enlace permanente
Piikki, Kristin ,  Söderström, Mats ,  Eriksson, Jan ,  Muturi, John Jamleck ,  Muthee, Patrick Ireri ,  Wetterlind, Johanna ,  Lund, Eric ,  [Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya] ,  Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso
Marcar todos
Limpiar todo