HERBICIDE COMPOSITION AND WEED CONTROL METHOD
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United States of America Patent
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app pub date -
Jul 9, 2014
filing date -
Mar 25, 2008
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Abstract
A method for producing a herbicidal composition containing an oily extract as an active ingredient. The method includes collecting cooled steam generated during a drying step of a lumber of trees belonging to the order Pinales to produce condensed water containing the oily extract, and obtaining the oily extract from the condensed water. Also disclosed is a method which includes distilling a lumber belonging to the order Pinales with steam and a method which includes extracting a lumber belonging to the order Pinales with hot water.
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