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johnson grass
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<blockquote data-quote="Running Arrow Bill" data-source="post: 773829" data-attributes="member: 9"><p>Johnsongrass spreads via aggressive rhizomes as well as seeds. Animals grazing JG hay and/or heads in mature grass can spread it in feces.</p><p></p><p>Unless EVERY JG plant has been killed with herbicide, it will spread. Roundup translocates via leaves & stems to roots. If any given plant is missed, it will continue to spread. The absolutely worst thing to do with JG is to plow it since doing such will only chop up the roots and each nodule will create another plant.</p><p></p><p>In past I have heard that with a JG infested field, it can take 3 to 5 years of spraying to 99% eradicate it, assuming no seeds have hit the ground.</p><p></p><p>Hope this helps and good luck!</p></blockquote><p></p>
[QUOTE="Running Arrow Bill, post: 773829, member: 9"] Johnsongrass spreads via aggressive rhizomes as well as seeds. Animals grazing JG hay and/or heads in mature grass can spread it in feces. Unless EVERY JG plant has been killed with herbicide, it will spread. Roundup translocates via leaves & stems to roots. If any given plant is missed, it will continue to spread. The absolutely worst thing to do with JG is to plow it since doing such will only chop up the roots and each nodule will create another plant. In past I have heard that with a JG infested field, it can take 3 to 5 years of spraying to 99% eradicate it, assuming no seeds have hit the ground. Hope this helps and good luck! [/QUOTE]
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