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פותח על ידי קלירמאש פתרונות בע"מ -
Influence of rate of soil fertilization on Alternaria leaf blight (Alternaria dauci) in carrots
Year:
1999
Source of publication :
Phytoparasitica
Authors :
בן-נון, ארז
;
.
וינטל, חיים
;
.
ירמיהו, אורי
;
.
שטיינברג, דני
;
.
Volume :
27
Co-Authors:
Vintal, H., Dept. of Plant Pathology, ARO, Volcani Center, Bet Dagan 50250, Israel
Ben-Noon, E., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100, Israel
Shlevin, E., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100, Israel
Yermiyahu, U., ARO, Gilat Experiment Station, Mobile Post Negev 2, 85280, Israel
Shtienberg, D., Dept. of Plant Pathology, ARO, Volcani Center, Bet Dagan 50250, Israel
Dinoor, A., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100, Israel
Facilitators :
From page:
193
To page:
200
(
Total pages:
8
)
Abstract:
The possibility of suppressing Alternaria dauci (Kuhn) Groves and Skolko, the causal agent of Alternaria leaf blight in carrot, by excess application of fertilizer was examined in greenhouse and field experiments. Reducing the rate of fertilization by one half from the optimal rate (100 ppm N, 19 ppm P and 74 ppm K) resulted in a 23-30% increase in the severity of Alternaria leaf blight. However, doubling the rate of fertilization resulted in only a 10-15% decrease in disease severity. Inoculating with different concentrations of A. dauci spores (103 or 104 spores/ml) did not alter the response of the plants to the fertilization rate, although significantly higher disease severity was observed in plants inoculated with the higher spore concentration. These results were corroborated in the field, where neither disease severity nor harvested yield was significantly affected by tripling the amount of soil fertilization. Application of foliar fungicides, on the other hand, had substantial effects on both disease and yield. Therefore, it was concluded that carrot crops should be fertilized and maintained for optimum yield, and that A. dauci should be managed by properly timed applications of fungicides during the growing season.
Note:
Related Files :
Alternaria
Alternaria dauci
Alternaria leaf blight
Carrots
fertilizer
IPM
leaf blight
soil
soil fertilization
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
28862
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:42
You may also be interested in
Scientific Publication
Influence of rate of soil fertilization on Alternaria leaf blight (Alternaria dauci) in carrots
27
Vintal, H., Dept. of Plant Pathology, ARO, Volcani Center, Bet Dagan 50250, Israel
Ben-Noon, E., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100, Israel
Shlevin, E., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100, Israel
Yermiyahu, U., ARO, Gilat Experiment Station, Mobile Post Negev 2, 85280, Israel
Shtienberg, D., Dept. of Plant Pathology, ARO, Volcani Center, Bet Dagan 50250, Israel
Dinoor, A., Dept. Plant Pathol. and Microbiol., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100, Israel
Influence of rate of soil fertilization on Alternaria leaf blight (Alternaria dauci) in carrots
The possibility of suppressing Alternaria dauci (Kuhn) Groves and Skolko, the causal agent of Alternaria leaf blight in carrot, by excess application of fertilizer was examined in greenhouse and field experiments. Reducing the rate of fertilization by one half from the optimal rate (100 ppm N, 19 ppm P and 74 ppm K) resulted in a 23-30% increase in the severity of Alternaria leaf blight. However, doubling the rate of fertilization resulted in only a 10-15% decrease in disease severity. Inoculating with different concentrations of A. dauci spores (103 or 104 spores/ml) did not alter the response of the plants to the fertilization rate, although significantly higher disease severity was observed in plants inoculated with the higher spore concentration. These results were corroborated in the field, where neither disease severity nor harvested yield was significantly affected by tripling the amount of soil fertilization. Application of foliar fungicides, on the other hand, had substantial effects on both disease and yield. Therefore, it was concluded that carrot crops should be fertilized and maintained for optimum yield, and that A. dauci should be managed by properly timed applications of fungicides during the growing season.
Scientific Publication
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