Dug 4 x 5-gallon buckets of knotweed from Future Cider Orchard. Fixed the pump on the tow-behind sprayer (just an air bubble lock in the supply line), filled it up w 40 gal water and 4 cup 2,4-D / 3,6-D, and hit spots of poison ivy I'd missed in road pasture and cross pasture
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5/ this map shows trees on a 15' grid ; if this actually works in practice (I'm not 100% sure that the left / west boundary is accurate ; that might be placing trees on a 45 degree slope in shade), then up to 50 treespic.twitter.com/H1ICdXYDRP
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8/ It's a multi-year process. The first year inject every single (EVERY. SINGLE.) knotweed cane with concentrated glyphosate (Roundup) between the first and second nodal ridges. This kills the knotweed; it turns brown or black Also kills 98% of root >https://twitter.com/Ecolocation_san/status/1406638022012162051 …
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9/ but 98% isn't 100%. The next year I come back and wait for baby knotweed to grow up from the sections of root that didn't die. I dig these up with a pick, try to get as much root as possible, and throw it in a dumpster. Third year I do the same. In the 4th year I rototill
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10/ At this point the knotweed is 99.99% gone, but small little stragglers spring up here and there. Because I tilled, the few surviving pieces of root are small and in loose friable soil; quite easy to watch for knotweed and then weed by hand.
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11/ oh, and let me add that one does not EVER EVER EVER compost the knotweed throw that !@# in a dumpster, or burn it
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