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so, the better control can be expected. 2, 4-D is ineffective after plants start to shoot, but very effective at 1 1/2 lbs./acre when properly applied and properly timed. If you don’t get the spray job done this spring, rob plants of their bloom buds and spray in November. Be sure mid day temperature is 60 degrees or higher in the fall. These are but a few of the pointers in effective thistle control. If you did not get a copy of leaflet 328, January 1968 issue, call 675-3619 and get your copy.
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