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פותח על ידי קלירמאש פתרונות בע"מ -
Significance of leaf infection by Botrytis cinerea in stem rotting of tomatoes grown in non-heated greenhouses
Year:
1998
Authors :
אלעד, יגאל
;
.
ניב, אריאלה
;
.
ניצני, יהודה
;
.
קירשנר, בני
;
.
שטיינברג, דני
;
.
Volume :
104
Co-Authors:
Shtienberg, D., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Elad, Y., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Niv, A., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Nitzani, Y., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Kirshner, B., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
753
To page:
763
(
Total pages:
11
)
Abstract:
The most serious symptom of Botrytis cinerea in tomatoes grown in greenhouses is stem rotting. Lesions on the stem may result from direct infection or from progression of the rot along infected leaves, until infection approaches the stem. In a set of experiments conducted in commercial greenhouses, an experimental greenhouse and growth chambers, the significance of the two types of stem infections was studied. In non-heated greenhouses most of the stem lesions originated from progression of the pathogen along infected petioles. The rate at which B. cinerea had progressed on infected petioles was 0.3-0.5 cm/day, an average of ca. 6 weeks was needed for a leaf infection to approach the stem. Application of Trichoderma harzianum T39 extended this time by 1-2 weeks and application of chemical fungicides by 3 weeks. Influence of the environment on the progression of B. cinerea along infected petioles was then determined. Within range of 5-30 °C, the higher the temperature, the more rapid was the rate of disease progression. The fungus progressed more rapidly on tomato petioles incubated at high vapour pressure deficit (VPD) rather than at low VPD. The source-sink relationship of the plant governed the rate of B. cinerea progression along the petioles as well: it was more rapid when the source was restricted (by shading) and slower when the sink was restricted (by removal of flowers and small fruits). The possibility that sanitation of infected leaflets would reduce the incidence of stem rotting was examined in two experiments. In plots not treated with a fungicide, the sanitation treatment substantially decreased the incidence of stem lesions and this treatment was as effective as weekly application of chemical fungicides.
Note:
Related Files :
crop plant
Cultural control
integrated pest management
mycosis
sanitation
stem rot
עוד תגיות
תוכן קשור
More details
DOI :
10.1023/A:1008690925443
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25646
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:16
Scientific Publication
Significance of leaf infection by Botrytis cinerea in stem rotting of tomatoes grown in non-heated greenhouses
104
Shtienberg, D., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Elad, Y., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Niv, A., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Nitzani, Y., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Kirshner, B., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Significance of leaf infection by Botrytis cinerea in stem rotting of tomatoes grown in non-heated greenhouses
The most serious symptom of Botrytis cinerea in tomatoes grown in greenhouses is stem rotting. Lesions on the stem may result from direct infection or from progression of the rot along infected leaves, until infection approaches the stem. In a set of experiments conducted in commercial greenhouses, an experimental greenhouse and growth chambers, the significance of the two types of stem infections was studied. In non-heated greenhouses most of the stem lesions originated from progression of the pathogen along infected petioles. The rate at which B. cinerea had progressed on infected petioles was 0.3-0.5 cm/day, an average of ca. 6 weeks was needed for a leaf infection to approach the stem. Application of Trichoderma harzianum T39 extended this time by 1-2 weeks and application of chemical fungicides by 3 weeks. Influence of the environment on the progression of B. cinerea along infected petioles was then determined. Within range of 5-30 °C, the higher the temperature, the more rapid was the rate of disease progression. The fungus progressed more rapidly on tomato petioles incubated at high vapour pressure deficit (VPD) rather than at low VPD. The source-sink relationship of the plant governed the rate of B. cinerea progression along the petioles as well: it was more rapid when the source was restricted (by shading) and slower when the sink was restricted (by removal of flowers and small fruits). The possibility that sanitation of infected leaflets would reduce the incidence of stem rotting was examined in two experiments. In plots not treated with a fungicide, the sanitation treatment substantially decreased the incidence of stem lesions and this treatment was as effective as weekly application of chemical fungicides.
Scientific Publication
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