Blood, sweat, tears and success of technology transfer long-term controlled-release of herbicides
The problems encountered, the technical difficulties that had to be overcome, and the successful transfer of technology related to controlled-release of pesticides is reviewed. Research on control-release of pesticides to date has resulted in products designed to extend bioactivity for periods of several days, months, or at most, several years. However, research supported by the U.S. Department of Energy directed toward solving problems associated with plant-root penetration through caps and liners engineered to minimize leaching or movement of buried nuclear and chemical wastes has resulted in development of a long-term controlled-release herbicide delivery system designed to stop root growth for periods of up to 100 years. Through the unique combination of polymers with a herbicidally active dinitroaniline, a cylindrical pellet was developed that continuously releases a herbicide for a period of up to 100 years. Equilibrium concentration of the herbicide in soil adjacent to the pellet and the bioactive lifetime of the device can be adjusted by changing the size of the pellet; the type of polymer; the type, quality, and quantity of carrier; and/or the concentration and type of dinitroaniline was used.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (US)
- OSTI ID:
- 6467263
- Report Number(s):
- CONF-880631-
- Journal Information:
- Nucl. Mater. Manage. Annu. Meet. Proc.; (United States), Vol. 17; Conference: 29. annual meeting of the Institute of Nuclear Materials Management, Las Vegas, NV, USA, 26 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LEACHING
MINIMIZATION
PESTICIDES
CONTROL SYSTEMS
ROOTS
PLUGGING AGENTS
US DOE
RESEARCH PROGRAMS
CLAYS
CONCRETES
REMEDIAL ACTION
REVIEWS
SOILS
TECHNOLOGY TRANSFER
BUILDING MATERIALS
DISSOLUTION
DOCUMENT TYPES
MATERIALS
NATIONAL ORGANIZATIONS
SEPARATION PROCESSES
US ORGANIZATIONS
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)