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
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Format: | biblioteca |
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1969
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Subjects: | COFFEA ARABICA, ENFERMEDADES FUNGOSAS, COLLETOTRICHUM, CONTROL QUIMICO, FUNGICIDAS, ESTIMULANTES DEL CRECIMIENTO, GLOMERELLA, COLLETOTRICHUM COFFEANUM, EFECTOS DE LOS FUNGICIDAS, GLOMERELLA CINGULATA, |
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KOHA-OAI-BVE:765112020-02-03T21:43:55ZThe stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease 99950 Nutman, F.J. 111395 Roberts, F.M. 1969The 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 pathogenThe 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 pathogenCOFFEA ARABICAENFERMEDADES FUNGOSASCOLLETOTRICHUMCONTROL QUIMICOFUNGICIDASESTIMULANTES DEL CRECIMIENTOGLOMERELLACOLLETOTRICHUM COFFEANUMEFECTOS DE LOS FUNGICIDASGLOMERELLA CINGULATAAnnals of Applied Biology (RU) |
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Costa Rica |
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biblioteca |
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America Central |
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COFFEA ARABICA ENFERMEDADES FUNGOSAS COLLETOTRICHUM CONTROL QUIMICO FUNGICIDAS ESTIMULANTES DEL CRECIMIENTO GLOMERELLA COLLETOTRICHUM COFFEANUM EFECTOS DE LOS FUNGICIDAS GLOMERELLA CINGULATA COFFEA ARABICA ENFERMEDADES FUNGOSAS COLLETOTRICHUM CONTROL QUIMICO FUNGICIDAS ESTIMULANTES DEL CRECIMIENTO GLOMERELLA COLLETOTRICHUM COFFEANUM EFECTOS DE LOS FUNGICIDAS GLOMERELLA CINGULATA |
spellingShingle |
COFFEA ARABICA ENFERMEDADES FUNGOSAS COLLETOTRICHUM CONTROL QUIMICO FUNGICIDAS ESTIMULANTES DEL CRECIMIENTO GLOMERELLA COLLETOTRICHUM COFFEANUM EFECTOS DE LOS FUNGICIDAS GLOMERELLA CINGULATA COFFEA ARABICA ENFERMEDADES FUNGOSAS COLLETOTRICHUM CONTROL QUIMICO FUNGICIDAS ESTIMULANTES DEL CRECIMIENTO GLOMERELLA COLLETOTRICHUM COFFEANUM EFECTOS DE LOS FUNGICIDAS GLOMERELLA CINGULATA 99950 Nutman, F.J. 111395 Roberts, F.M. The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease |
description |
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 |
format |
|
topic_facet |
COFFEA ARABICA ENFERMEDADES FUNGOSAS COLLETOTRICHUM CONTROL QUIMICO FUNGICIDAS ESTIMULANTES DEL CRECIMIENTO GLOMERELLA COLLETOTRICHUM COFFEANUM EFECTOS DE LOS FUNGICIDAS GLOMERELLA CINGULATA |
author |
99950 Nutman, F.J. 111395 Roberts, F.M. |
author_facet |
99950 Nutman, F.J. 111395 Roberts, F.M. |
author_sort |
99950 Nutman, F.J. |
title |
The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease |
title_short |
The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease |
title_full |
The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease |
title_fullStr |
The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease |
title_full_unstemmed |
The stimulating effect of some fungicides on Glomerella cingulat in relation to the control of coffee berry disease |
title_sort |
stimulating effect of some fungicides on glomerella cingulat in relation to the control of coffee berry disease |
publishDate |
1969 |
work_keys_str_mv |
AT 99950nutmanfj thestimulatingeffectofsomefungicidesonglomerellacingulatinrelationtothecontrolofcoffeeberrydisease AT 111395robertsfm thestimulatingeffectofsomefungicidesonglomerellacingulatinrelationtothecontrolofcoffeeberrydisease AT 99950nutmanfj stimulatingeffectofsomefungicidesonglomerellacingulatinrelationtothecontrolofcoffeeberrydisease AT 111395robertsfm stimulatingeffectofsomefungicidesonglomerellacingulatinrelationtothecontrolofcoffeeberrydisease |
_version_ |
1756058203681980417 |