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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Controlled Release of Pesticides into Soils from Clay - Polymer Formulations
Year:
1998
Authors :
גרסטל, זאב
;
.
מינגלגרין, אורי
;
.
נאסר, אחמד
;
.
Volume :
46
Co-Authors:
Gerstl, Z., Inst. Soil, Water and Environ. Sci., ARO, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Nasser, A., Inst. Soil, Water and Environ. Sci., ARO, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Mingelgrin, U., Inst. Soil, Water and Environ. Sci., ARO, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Facilitators :
From page:
3797
To page:
3802
(
Total pages:
6
)
Abstract:
Alachlor was released from a controlled-release formulation (CRF) when applied to a sandy loam soil under conditions of constant temperature and moisture and achieved concentrations of 0.1-0.2 mg/kg after 1 week. Soil concentrations of 0.2-0.8 mg/kg were maintained for at least an additional 8 weeks. A large portion (35-70%) of the active ingredient was still present in the CRFs at the conclusion of the experiment. Application of alachlor as the commercial formulation resulted in 50% dissipation after only 3-4 days. Alachlor released from CRFs with a smaller diameter resulted in higher soil concentrations (1.2 mg/kg) after 18 days. In column leaching studies the leaching of alachlor, atrazine, and trifluralin from CRFs was considerably reduced with respect to leaching of the same compounds from commercial formulations. The release of alachlor from an Al-pillared clay CRF and its subsequent transport in soil columns showed that pillared clays can be used for controlled release of herbicides, but more work is necessary before the effects of the many factors involved in the release of the active ingredients from pillared clays are completely understood.
Note:
Related Files :
Alachlor
Alginate
Atrazine
Clay
Controlled release
Degradation
diffusion
herbicides
pectin
Pillared clays
Trifluralin
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20968
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:40
Scientific Publication
Controlled Release of Pesticides into Soils from Clay - Polymer Formulations
46
Gerstl, Z., Inst. Soil, Water and Environ. Sci., ARO, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Nasser, A., Inst. Soil, Water and Environ. Sci., ARO, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Mingelgrin, U., Inst. Soil, Water and Environ. Sci., ARO, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Controlled Release of Pesticides into Soils from Clay - Polymer Formulations
Alachlor was released from a controlled-release formulation (CRF) when applied to a sandy loam soil under conditions of constant temperature and moisture and achieved concentrations of 0.1-0.2 mg/kg after 1 week. Soil concentrations of 0.2-0.8 mg/kg were maintained for at least an additional 8 weeks. A large portion (35-70%) of the active ingredient was still present in the CRFs at the conclusion of the experiment. Application of alachlor as the commercial formulation resulted in 50% dissipation after only 3-4 days. Alachlor released from CRFs with a smaller diameter resulted in higher soil concentrations (1.2 mg/kg) after 18 days. In column leaching studies the leaching of alachlor, atrazine, and trifluralin from CRFs was considerably reduced with respect to leaching of the same compounds from commercial formulations. The release of alachlor from an Al-pillared clay CRF and its subsequent transport in soil columns showed that pillared clays can be used for controlled release of herbicides, but more work is necessary before the effects of the many factors involved in the release of the active ingredients from pillared clays are completely understood.
Scientific Publication
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