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פותח על ידי קלירמאש פתרונות בע"מ -
Adsorption, decomposition and movement of oxamyl in soil
Year:
1984
Source of publication :
Pesticide Science
Authors :
גרסטל, זאב
;
.
Volume :
15
Co-Authors:
Gerstl, Z., Division of Soil Residues Chemistry, Institute of Soils and Water, Agricultural Research Organization, Volcani Center, P.O.B. 6, Bet Dagan, 50–250, Israel
Facilitators :
From page:
9
To page:
17
(
Total pages:
9
)
Abstract:
A study was conducted of the behaviour of oxamyl in Israeli soils of varying clay and organic matter contents. The adsorption isotherms for oxamyl were linear, and the adsorption coefficient (Kd) could be correlated to the clay content of the soils, as well as to the organic matter content of the soil. Oxamyl adsorption was underestimated by using published correlations between the adsorption and the chemical properties of pesticides, such as their solubility or octan‐1‐ol‐water partition coefficient. The decomposition of oxamyl in soils followed first‐order kinetics. The half‐life ranged from 4 to 33 days in a Bet Dagan soil. The reaction rate increased with increasing moisture content of the soil until field capacity was reached, at which point it levelled off. The Arrhenius relationship was followed, with degradation proceeding more rapidly at higher temperatures. In several soils of varying composition, which were kept at field capacity, no difference in the degradation rates was observed. Oxamyl was applied to a Bet Dagan soil from a point source in a single pulse, as a split application, and on a continuous basis. The distribution patterns of oxamyl under the various treatments differed significantly. After the single‐pulse application, oxamyl was leached out of the emitter zone. While the split application decreased the oxamyl‐free zone, the best results were obtained by continuous application, which gave a nearly uniform distribution of oxamyl in the soil. Copyright © 1984 John Wiley & Sons, Ltd
Note:
Related Files :
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More details
DOI :
10.1002/ps.2780150103
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
19089
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:26
Scientific Publication
Adsorption, decomposition and movement of oxamyl in soil
15
Gerstl, Z., Division of Soil Residues Chemistry, Institute of Soils and Water, Agricultural Research Organization, Volcani Center, P.O.B. 6, Bet Dagan, 50–250, Israel
Adsorption, decomposition and movement of oxamyl in soil
A study was conducted of the behaviour of oxamyl in Israeli soils of varying clay and organic matter contents. The adsorption isotherms for oxamyl were linear, and the adsorption coefficient (Kd) could be correlated to the clay content of the soils, as well as to the organic matter content of the soil. Oxamyl adsorption was underestimated by using published correlations between the adsorption and the chemical properties of pesticides, such as their solubility or octan‐1‐ol‐water partition coefficient. The decomposition of oxamyl in soils followed first‐order kinetics. The half‐life ranged from 4 to 33 days in a Bet Dagan soil. The reaction rate increased with increasing moisture content of the soil until field capacity was reached, at which point it levelled off. The Arrhenius relationship was followed, with degradation proceeding more rapidly at higher temperatures. In several soils of varying composition, which were kept at field capacity, no difference in the degradation rates was observed. Oxamyl was applied to a Bet Dagan soil from a point source in a single pulse, as a split application, and on a continuous basis. The distribution patterns of oxamyl under the various treatments differed significantly. After the single‐pulse application, oxamyl was leached out of the emitter zone. While the split application decreased the oxamyl‐free zone, the best results were obtained by continuous application, which gave a nearly uniform distribution of oxamyl in the soil. Copyright © 1984 John Wiley & Sons, Ltd
Scientific Publication
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