Results 181 to 190 of about 4,857 (210)
Some of the next articles are maybe not open access.

Roya anaranjada: Hemileia vastatrix Berk. y Br.

2003
Por su distribución mundial, los daños económicos que ocasiona y la capacidad del hongo /Hemileia vastatrix/ para sobreponer la resistencia de materiales mejorados, hacen que esta enfermedad sea catalogada como la principal del cultivo del café en el Mundo.
exaly   +2 more sources

Studies on the biology of Hemileia vastatrix Berk. & Br

Transactions of the British Mycological Society, 1963
Germination of the uredospores of Hemileia vastatrix can occur only in the presence of liquid water, either in the dark or in light of low intensity, the latter stimulating the onset of germination at low, but not at optimal temperatures. On agar the optimum is 22° C, the minimum 15·5° and the maximum 28·5°.
F.J. Nutman, F.M. Roberts, R.T. Clarke
openaire   +1 more source

6. Variation for incomplete resistance to Hemileia vastatrix in Coffea arabica

Euphytica, 1983
Variation for incomplete resistance to coffee leaf rust was studied in Coffea arabica. Disease level in the field was scored by a 0 to 9 scale. Components of resistance observed in laboratory and greenhouse tests were latency period (LP), lesion density (LD) and leaf retention period (LRP). LRP determines the duration of sporulation.
A. B. ESKES, A. Carvalho
openaire   +1 more source

Possible insect vectors of the uredospores of Hemileia vastatrix in Kenya

Transactions of the British Mycological Society, 1963
Evidence is presented that two species of parasitic Hymenoptera, Leptacis kivuensis and Synopeas sp., are vectors of the uredospores of the coffee leaf-rust fungus Hemileia vastatrix Berk. & Br. in Kenya. Their chief importance is probably in carrying the initial spore inoculum to new plantations remote from other coffee.
openaire   +1 more source

Dispersal of uredospores of Hemileia vastatrix under field conditions

Transactions of the British Mycological Society, 1962
The number of uredospores of Hemileia vastatrix Berk. & Br. in the air at times which are critical for seasonal build-up of infection is excessively low; this, together with the effect of spore density on infection, suggests that wind plays no part in dispersal.
openaire   +1 more source

Contributions to the Biology of Hemileia vastatrix.

Journal of Phytopathology, 1978
J. Harr, R. Guggenheim
openaire   +1 more source

Modelling coffee rust (Hemileia vastatrix)

2009
Plant disease epidemiologists have built models in order to describe, explain or predict development of epidemics, taking into account the multiple factors that can affect a disease. Indeed, the existence and severity of a disease are determined by the effects of a host, a pathogen, an environment, a cropping system and their interactions.
openaire   +1 more source

Hemileia vastatrix (coffee leaf rust)

PlantwisePlus Knowledge Bank, 2022
openaire   +1 more source

The effect of light intensity on incomplete resistance of coffee to Hemileia vastatrix

Netherlands Journal of Plant Pathology, 1982
Resistance of coffee to race II ofHemileia vastatrix was tested in different environments at light intensities (LI) from 17 to 100% of total outdoor radiation. Nine treatments, in which three levels of LI before inoculation were combined with three levels of LI after inoculation, were applied to seedlings of the susceptible cv. Mundo Novo.
openaire   +1 more source

Home - About - Disclaimer - Privacy