Development Of Controlled-Release Polymer Systems Containing Pendant Metribuzin

Mccormick, Charles L., 1946-; Savage, K. E.; Hutchinson, Brewer

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

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Development Of Controlled-Release Polymer Systems Containing Pendant Metribuzin

1977
By Mccormick, Charles L., 1946- ; Savage, K. E. ; Hutchinson, Brewer
Series: MASGP

[PDF-404.24 KB]

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Personal Author:

Mccormick, Charles L., 1946- ; Savage, K. E. ; Hutchinson, Brewer

Mccormick, Charles L., 1946- ; Savage, K. E. ; Hutchinson, Brewer Less -
NOAA Program & Office:

Sea Grant ; OAR (Oceanic and Atmospheric Research)

Sea Grant ; OAR (Oceanic and Atmospheric Research) Less -
Sea Grant Program:

MASGC (Mississippi-Alabama Sea Grant Consortium)
Description:

Recently, there has been a growing interest in developing technology for controlled release of pesticides. Much of the impetus has resulted from demands for enhanced agricultural product ion with greater efficiency and lower levels of environmental risk. Most of the activity has been directed toward formulations in which the herbicide is physically dissolved or dispersed in a polymer matrix. Polymers have been prepared in our laboratories which contain labile covalent bends of the polymer to metribuzin [4-amino-6-tertbutyl-3- (methy1thio)-as-triazin-5 (4H)-one]. These linkages are susceptible to aqueous and/or bacterial break-down resulting in release of the herbicide into the biosphere. Solution studies indicated more rapid rates of herbicide release from linear than from cross-linked polymer, systems. This difference was also apparent in soil thin-layer mobility studies. Linear systems exhibited a definite release mechanism as compared to metribuzin alone. The cross-linked systems failed to release a measurable quantity of the herbicide in this system. Phytotoxicity studies verified that the parent herbicide was being released. Increased residual phytotoxicity resulted from use of these linear polymer systems containing pendant metribuzin.
Keywords:

[+]

Herbicides Metribuzin Polymerization Polymers
Series:

MASGP
Sea Grant Document Number:

MASGC-T-77-004
Document Type:

Technical Report
Rights Information:

Public Domain
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Library
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[+]

urn:sha256:217a008017345a360313242fc8a6d24752a2993655a9b82339b5b646197e9d80
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https://repository.library.noaa.gov/view/noaa/40284/noaa_40284_DS1.pdf
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Development Of Controlled-Release Polymer Systems Containing Pendant Metribuzin

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