Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1976-12-17
1978-04-25
Gotts, Lewis
Chemistry: fertilizers
Processes and products
Forms or conditioning
260651R, A01N 932
Patent
active
040860817
ABSTRACT:
Method of preventing, for a time, growth of perennial grasses and sedges in which a halostyrene compound selected from .alpha.-(2,2,2-trichloroethyl)-m-chlorostyrene and .alpha.-(2,2,2-trichloroethyl)-m-bromostyrene is incorporated into a surface layer of the soil of a field plot infested with the tubers and/or underground stems of the said perennial grasses and sedges at a concentration in the range of about 0.25 to about 50 ppm, and more preferably about 1 to about 25 ppm within the layer, and the layer being about 1/8 to about 6 inches in thickness and the dosage rate of halostyrene compound being at least about 0.5 pound per acre and up to about 10 pounds per acre and preferably below about 4 pounds per acre. Essentially a substantial portion of the compound is incorporated in the soil above most of the tubers and/or underground stems of the perennial grasses and sedges to be controlled, or directly contacted with said tuber and/or stems.
REFERENCES:
patent: 3373011 (1968-03-01), Mussell
Barrons Keith C.
Holmsen Theodore W.
Smith, Jr. Leonard L.
Gotts Lewis
Mills Catherine L.
Schilling Edward E.
The Dow Chemical Company
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