What do I do to kill buttercup?

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15 years 5 months ago #233675 by jeannielea
Would using dolomite instead of lime alone help? We have used lime in the past but the dolomite we spread in the autumn and again this spring (we used half what we needed each time) has seen the clover and good grasses really come to life and therefore less weeds. We did it because a soil test showed we needed lime and magnesium so it seemed the best thing to do.

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15 years 5 months ago #233680 by sundaysbest
Nothing wrong with dolomite also - and it's generally a tad cheaper - but again, you will need loads...
Sundays

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15 years 5 months ago #233928 by Jo-Otago
We used harmony for buttercup with good success. Maybe we were just lucky but we sprayed it and limed once and that was about 6 years ago and it never came back. It was only in one small paddock though so that certainly helped. Actually we didn't use a commercial lime, we used some crushed up lime rock leftovers from a quarry and it must have had some good stuff in it as that paddock went from being a weedy crap paddock to a really awesome one, and that was the only treatment it has ever had in 8 years. Wish we knew what was in the rock or could get some more.
The one good thing with buttercup is that once it has died off it is safe for stock to eat (and it's also safe in hay). Unlike ragwort! It also doesn't have nasty spiky bits like thistles! [;)]

[SIGPIC][/SIGPIC]

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15 years 5 months ago #233931 by LongRidge
The maximum lime that grass and WORMS can handle comfortably is until the pH reaches about 6.0. If you lime to over pH 6.0, then other plants will do better than the grasses, and the worm population will reduce. Over 6.0 other elements become available to the plants, which also are not good for the animal in excess.
DO NOT over-lime. For most soils, you need 1 tonne of lime per hectare to raise the pH by 0.1 .

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