Main Title |
Rhizotron and field test of a root biobarrier technique--methods and first year results |
Other Authors |
|
Publisher |
E.I. du Pont de Nemours & Co., Savannah River Laboratory, |
Year Published |
1988 |
Report Number |
DP-1767 |
OCLC Number |
19372781 |
Subjects |
Radioactive waste disposal in the ground--Environmental aspects ;
Roots (Botany)--Development--Research ;
Growth inhibiting substances--Evaluation
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBM |
TD899.A8S38 no.1767 |
|
Headquarters Library/Washington,DC |
02/28/2007 |
|
Collation |
33 p. : ill. ; 28 cm. |
Abstract |
Vegetation is commonly used to stabilize the ground covering buried waste sites.^However, constituents of buried waste can be brought to the surface if the waste is penetrated by plant roots.^An ideal waste burial system would allow the use of vegetation to stabilize the soil above the buried waste but would exclude roots from the waste.^One system which shows promise of accomplishing this objective is a root biobarrier.^The biobarrier consists of a slow release encapsulation of a root growth inhibitor (Trifluralin).^The capsules are bounded on a geofabric sheet.^Tests were conducted in a rhizotron and in the glass walled trenches in the field to observe the effect of the root biobarrier on the growth of a variety of plant species.^The preliminary results indicate that roots of soybean (Glycine max (L).^Merr.) and Bermuda grass (Cynodon dactylon (L).^Pers.) do not grow within one inch of the barrier.^Analysis of the level of root inhibitor in the soil confirms that the concentration of inhibitor near the biobarrier is high enough to stop root growth.^If further tests continue to show that the biobarrier can exclude roots for extended periods of time it appears the biobarrier should be considered for inclusion in buried waste systems. |
Notes |
"DP-1767." "UC-702." "August 1988." Bibliography: p. 16. |