Polymeric microcapsules of the herbicides atrazine and metribuzin: Preparation and evaluation of controlled-release properties

Atrazine and metribuzin were microencapsulated within 5 different polymers by the solvent evaporation process using two different emulsifiers (for a total of 20 formulations). Herbicide efficacy studies on Florida beggarweed, smallflower morningglory, tall morningglory, and Palmer amaranth were cond...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1993-09, Vol.41 (9), p.1517-1522
Main Authors: Dailey, Oliver D, Dowler, Clyde C, Mullinix, Ben G
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
AMARANTHUS
ATRAZINA
ATRAZINE
Biological and medical sciences
Chemical control
CONVOLVULACEAE
DESHERBAGE
DESMODIUM
ESCARDA
FORMULACIONES
FORMULATION
Fundamental and applied biological sciences. Psychology
GERMINACION
GERMINATION
HERBICIDAS
HERBICIDE
METHODE D'APPLICATION
METODOS DE APLICACION
METRIBUZINA
METRIBUZINE
Parasitic plants. Weeds
PHARBITIS
Phytopathology. Animal pests. Plant and forest protection
POLIMEROS
POLYMERE
Weeds
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Summary:Atrazine and metribuzin were microencapsulated within 5 different polymers by the solvent evaporation process using two different emulsifiers (for a total of 20 formulations). Herbicide efficacy studies on Florida beggarweed, smallflower morningglory, tall morningglory, and Palmer amaranth were conducted in the greenhouse. Nine of the 10 atrazine formulations were at least as effective as a commercial dry flowable formulation, and 5 exhibited superior herbicidal activity and controlled-release properties for over 32 weeks after treatment. The polymers demonstrating the most efficacy were cellulose acetate butyrate and ethylcellulose. Five of the 10 metribuzin formulations had activities comparable to or slightly less than the commercial formulation and exhibited controlled-release properties; the other 5 had moderate to low herbicidal activity
ISSN:0021-8561
1520-5118
DOI:10.1021/jf00033a031