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AssigneeBattelle Memorial Institute
InventorsFrederick G. Burton, Dominic A. Cataldo, John F. Cline, W. Eugene Skiens, Peter Van Voris
Estimating the term…
In accordance with this invention, a porous sheet material is provided at intervals with bodies of a polymer which contain a 2,6-dinitroaniline. The sheet material is made porous to permit free passage of water. It may be either a perforated sheet or a woven or non-woven textile material. A particularly desirable embodiment is a non-woven fabric of non-biodegradable material. This type of material is known as a "geotextile" and is used for weed control, prevention of erosion on slopes, and other landscaping purposes. In order to obtain a root repelling property, a dinitroaniline is blended with a polymer which is attached to the geotextile or other porous material.
A material for preventing entry of unwanted roots into a volume of soil, comprising a flexible sheet of water-permeable fabric carrying discrete spaced-apart bodies of a polymer containing a herbicidal dinitroaniline and carbon black, the concentration of said dinitroaniline in said bodies being from about 2 wt. % to about 30 wt. %, and the concentration of said carbon black being effective to retain and control the release rate of said dinitroaniline, said bodies being attached to said flexible sheet and distributed thereon in spaced-apart relationship such that when said sheet is buried in soil, said dinitroaniline will diffuse into the volume of soil at such a rate, and over such a period of time, as to exclude roots over a period of years without killing plants beyond the seedling stage.
Dependencies are inferred from the claim text.