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Ragwort
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<blockquote data-quote="Kiwi Pete" data-source="post: 7719591" data-attributes="member: 63856"><p>Hi! </p><p></p><p>Ragwort toxicity is one of those things that builds up in stock. Some stock won't touch it (eg, horses won't) and this helps it get away.</p><p></p><p>Other animals (eg, sheep) keep it under control by defoliating it at rosette stage. It's a biennial plant, so if it can't grow in its first year, it doesn't turn into a great big yellow monster with tens of thousands of seeds <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite24" alt="(y)" title="Thumbs Up (y)" loading="lazy" data-shortname="(y)" /></p><p></p><p>However, the rosettes are flat to the ground, mowing will take out the second-year (flowering year) plants and tip the rosettes, but that's about it. </p><p>Really needs a good flock of ewes in there every year, or cutting and spraying every year, once they become a nuisance.</p><p></p><p>Winter spraying can be quite effective so long as the field is dry enough to get on (broadleaf weed sprays knock clover, by spraying when the field is grazed tight and the clover is dormant, it limits the collateral damage).</p><p></p><p>Possibly the worst danger is to cut the field (topping) and then have hungry stock break in and eat the wilted ragwort - the toxins are condensed, but the horrid taste seems to go when wilted. </p><p></p><p>But, if your neighbour's ewes got in to a field with growing ragwort in it, it probably won't hurt them much at all.</p></blockquote><p></p>
[QUOTE="Kiwi Pete, post: 7719591, member: 63856"] Hi! Ragwort toxicity is one of those things that builds up in stock. Some stock won't touch it (eg, horses won't) and this helps it get away. Other animals (eg, sheep) keep it under control by defoliating it at rosette stage. It's a biennial plant, so if it can't grow in its first year, it doesn't turn into a great big yellow monster with tens of thousands of seeds (y) However, the rosettes are flat to the ground, mowing will take out the second-year (flowering year) plants and tip the rosettes, but that's about it. Really needs a good flock of ewes in there every year, or cutting and spraying every year, once they become a nuisance. Winter spraying can be quite effective so long as the field is dry enough to get on (broadleaf weed sprays knock clover, by spraying when the field is grazed tight and the clover is dormant, it limits the collateral damage). Possibly the worst danger is to cut the field (topping) and then have hungry stock break in and eat the wilted ragwort - the toxins are condensed, but the horrid taste seems to go when wilted. But, if your neighbour's ewes got in to a field with growing ragwort in it, it probably won't hurt them much at all. [/QUOTE]
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