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Herbicide Question
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<blockquote data-quote="simme" data-source="post: 1790945" data-attributes="member: 40418"><p>A little more info. Grazon Next label does list dog fennel as a "broadleaf weed controlled", but there is a note on the dog fennel line that "<em>Spot treatment at rates up to 4.2 pints (68 fl oz) per acre of GrazonNext HL may be particularly effective against dense patches of perennial broadleaf plants</em>". I try to avoid any use at more than 1 qt/acre rate due to the residual effect that persists and affects germination for many months out. Next at 1 qt/acre has not worked for me on dog fennel.</p><p></p><p>Duracor label only lists dogfennel control when duracor is used in combination with Pasturegard. Duracor alone has burned it and severely stunted it for me. But, did not kill it.</p><p></p><p>2,4-D alone has not worked for me on dogfennel here. Maybe we have a tough version in this area. I don't see dog fennel listed on 2,4-d amine label. But there are a lot of variables - size of plant and state of growth, soil moisture, application rate, droplet size, etc. Dicamba has worked well for me but is under scrutiny for effects on nearby crops. An issue with dog fennel is timing. Dog fennel starts growing here several weeks after most other spring broadleaf weeds. Usually spray in March for thistle and such. The dogfennel is not big enough to catch much chemical at that time.</p></blockquote><p></p>
[QUOTE="simme, post: 1790945, member: 40418"] A little more info. Grazon Next label does list dog fennel as a "broadleaf weed controlled", but there is a note on the dog fennel line that "[I]Spot treatment at rates up to 4.2 pints (68 fl oz) per acre of GrazonNext HL may be particularly effective against dense patches of perennial broadleaf plants[/I]". I try to avoid any use at more than 1 qt/acre rate due to the residual effect that persists and affects germination for many months out. Next at 1 qt/acre has not worked for me on dog fennel. Duracor label only lists dogfennel control when duracor is used in combination with Pasturegard. Duracor alone has burned it and severely stunted it for me. But, did not kill it. 2,4-D alone has not worked for me on dogfennel here. Maybe we have a tough version in this area. I don't see dog fennel listed on 2,4-d amine label. But there are a lot of variables - size of plant and state of growth, soil moisture, application rate, droplet size, etc. Dicamba has worked well for me but is under scrutiny for effects on nearby crops. An issue with dog fennel is timing. Dog fennel starts growing here several weeks after most other spring broadleaf weeds. Usually spray in March for thistle and such. The dogfennel is not big enough to catch much chemical at that time. [/QUOTE]
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