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Persistence and distribution of three benzimidazole fungicides in pear trees sprayed for the control of venturia pirina
Year:
1974
Source of publication :
Phytoparasitica
Authors :
Aharonson, Nadav
;
.
Shabi, Ezra
;
.
Volume :
2
Co-Authors:
Ben-Azize, A., Killed in action on Oct. 11. 1973, near the Suez Canal. Dr. Ben-Aziz had worked as Senior Researcher at the Pesticide Chemistry and Residue Research Laboratory, ARO, Volcani Center, since its establishment in April 1971, Bet Dagan, Israel, Pesticide Chemistry and Residue Research Laboratory, Bet Dagan, Israel
Shabit, E., Div. of Plant Pathology, ARO, The Volcani Center, Bet Dagan, Israel
Aharonson, N., Pesticide Chemistry and Residue Research Laboratory, Bet Dagan, Israel
Ben-Azize, A., Residue Research Laboratory, ARO,The Volcani Center, Pesticide Chemistry and Residue Research Laboratory, Bet Dagan, Israel
Shabit, E., Div. of Plant Pathology, ARO,The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
117
To page:
125
(
Total pages:
9
)
Abstract:
The persistence and distribution in leaves and fruits of benomyl, carbendazim and methylthiophanate were investigated, following fungicide spray treatments in pear orchards. Chemical analysis and bioassays showed that basal leaves sprayed more than once with benomyl, contained 50 ppm of methyl benzimidazole carbamate (MBC) 4 days after the last spray. Seven months later. 8 ppm MBC was detected in the basal leaves, just before normal abscission. In apical leaves, the fungicide levels were lower than in the basal ones. Analyses of basal leaves showed that the residue level of MBC, 5 and 7 months after the last treatment with benomyl. carbendazim or methylthiophanate, was very similar in all treatments. Bound MBC was not detected in the leaves and only low concentrations of 2-amino benzimidazole (2-AB) were detected. There was no translocation of these fungicides from treated leaves to new young leaves. Chemical analysis of pear fruits from an orchard sprayed with benomyl revealed that 3 weeks after the last spray treatment, the residue level of MBC was 0.4 ppm. About 85% of the fungicide was found in the peel, and only 15% in the pulp. The more infected fruits consistently contained a lower concentration of MBC than the less infected fruits. © 1974, Springer Science + Business Media B.V.. All rights reserved.
Note:
Related Files :
benomyl
Benzimidazole fungicides
Distribution
MBC
methyl thiophanate
pear leaves and fruits
Persistence
residues
Show More
Related Content
More details
DOI :
10.1007/BF02980295
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
22303
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:50
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Scientific Publication
Persistence and distribution of three benzimidazole fungicides in pear trees sprayed for the control of venturia pirina
2
Ben-Azize, A., Killed in action on Oct. 11. 1973, near the Suez Canal. Dr. Ben-Aziz had worked as Senior Researcher at the Pesticide Chemistry and Residue Research Laboratory, ARO, Volcani Center, since its establishment in April 1971, Bet Dagan, Israel, Pesticide Chemistry and Residue Research Laboratory, Bet Dagan, Israel
Shabit, E., Div. of Plant Pathology, ARO, The Volcani Center, Bet Dagan, Israel
Aharonson, N., Pesticide Chemistry and Residue Research Laboratory, Bet Dagan, Israel
Ben-Azize, A., Residue Research Laboratory, ARO,The Volcani Center, Pesticide Chemistry and Residue Research Laboratory, Bet Dagan, Israel
Shabit, E., Div. of Plant Pathology, ARO,The Volcani Center, Bet Dagan, Israel
Persistence and distribution of three benzimidazole fungicides in pear trees sprayed for the control of venturia pirina
The persistence and distribution in leaves and fruits of benomyl, carbendazim and methylthiophanate were investigated, following fungicide spray treatments in pear orchards. Chemical analysis and bioassays showed that basal leaves sprayed more than once with benomyl, contained 50 ppm of methyl benzimidazole carbamate (MBC) 4 days after the last spray. Seven months later. 8 ppm MBC was detected in the basal leaves, just before normal abscission. In apical leaves, the fungicide levels were lower than in the basal ones. Analyses of basal leaves showed that the residue level of MBC, 5 and 7 months after the last treatment with benomyl. carbendazim or methylthiophanate, was very similar in all treatments. Bound MBC was not detected in the leaves and only low concentrations of 2-amino benzimidazole (2-AB) were detected. There was no translocation of these fungicides from treated leaves to new young leaves. Chemical analysis of pear fruits from an orchard sprayed with benomyl revealed that 3 weeks after the last spray treatment, the residue level of MBC was 0.4 ppm. About 85% of the fungicide was found in the peel, and only 15% in the pulp. The more infected fruits consistently contained a lower concentration of MBC than the less infected fruits. © 1974, Springer Science + Business Media B.V.. All rights reserved.
Scientific Publication
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