Long-term control of root growth

Patent · Tue May 26 00:00:00 EDT 1992

OSTI ID:868305

Burton, Frederick G ^[1]; Cataldo, Dominic A ^[2]; Cline, John F ^[3]; Skiens, W Eugene ^[4]

---

1. West Richland, WA
2. Kennewick, WA
3. Prosser, WA
4. Richland, WA

A method and system for long-term control of root growth without killing the plants bearing those roots involves incorporating a 2,6-dinitroaniline in a polymer and disposing the polymer in an area in which root control is desired. This results in controlled release of the substituted aniline herbicide over a period of many years. Herbicides of this class have the property of preventing root elongation without translocating into other parts of the plant. The herbicide may be encapsulated in the polymer or mixed with it. The polymer-herbicide mixture may be formed into pellets, sheets, pipe gaskets, pipes for carrying water, or various other forms. The invention may be applied to other protection of buried hazardous wastes, protection of underground pipes, prevention of root intrusion beneath slabs, the dwarfing of trees or shrubs and other applications. The preferred herbicide is 4-difluoromethyl-N,N-dipropyl-2,6-dinitro-aniline, commonly known as trifluralin.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): US 5116414
• Application Number: 06/555,113
• OSTI ID: 868305
• Country of Publication: United States
• Language: English

Related Subjects

long-term
control
root
growth
method
killing
plants
bearing
roots
involves
incorporating
6-dinitroaniline
polymer
disposing
desired
results
controlled
release
substituted
aniline
herbicide
period
herbicides
property
preventing
elongation
translocating
plant
encapsulated
mixed
polymer-herbicide
mixture
formed
pellets
sheets
pipe
gaskets
pipes
carrying
water
various
forms
applied
protection
buried
hazardous
wastes
underground
prevention
intrusion
beneath
slabs
dwarfing
trees
shrubs
applications
preferred
4-difluoromethyl-n
n-dipropyl-2
6-dinitro-aniline
commonly
trifluralin
hazardous waste
hazardous wastes
controlled release
root growth
underground pipe
long-term control
root control
roots involves
plants bearing
involves incorporating
/504/