The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease
The non-parasitic strain of Colletotrichum coffeanum Noack which colonizes the maturing wood of Coffea arabica produces its perfect stage (Glomerella cingulata) on the branches. Assessments of the relative abundance of this in relation to preceding rainfall have shown that for unsprayed branches, but rarely for sprayed ones, the correlation is negative and highly significant. Various fungicides stimulate G. cingulata greatly, and this stimulation persists for many months. One other saprophytic component of the micro-flora is similarly stimulated, but with two others all the fungicides used depress sporulation. It is suggested that when the main source of infection of coffee berries is the pathogenic conidia from the wood, the mechanism of longterm control by early-season sprays may lie partly in this stimulation of some fungal competitors of the pathogen
Main Authors: | 99950 Nutman, F.J., 111395 Roberts, F.M. |
---|---|
Format: | biblioteca |
Published: |
1969
|
Subjects: | COFFEA ARABICA, ENFERMEDADES FUNGOSAS, COLLETOTRICHUM, CONTROL QUIMICO, FUNGICIDAS, ESTIMULANTES DEL CRECIMIENTO, GLOMERELLA, COLLETOTRICHUM COFFEANUM, EFECTOS DE LOS FUNGICIDAS, GLOMERELLA CINGULATA, |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Contribution a la mise au point des methodes de lutte contre l'anthracnose des baies du cafeier d'Arabie (Coffea arabica) due a une forme de Colletotrichum coffeanum Noack au Cameroun
by: 97351 Muller, R.A., et al.
Published: (Abr-) -
The ability of American and African Colletotrichum isolates to cause coffee berry disease symptoms and the association of some isolates with Glomerella cingulata
by: 71629 Gielink, A.J., et al.
Published: (1983) -
El CBD y su significado para nuestra caficultura
by: 68162 Flores, M.A.
Published: (Ene ) -
Anthracnose and berry disease of coffee in Puerto Rico
by: 94169 Mignucci, J.S., et al.
Published: (Ene ) -
Breeding for resistance to coffee berry disease in Coffea arabica L., 2: Inheritance of the resistance
by: 129834 Vossen, H.A.M. van der, et al.
Published: (1980)