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Originally, cutting or crushing largely controlled bracken, using ground based machinery or cutters. However, in most cases there was either to much bracken or it chose to grow in areas not accessible to ground machines.
For the past 35 years, the main means of control is by spraying bracken with Asulox.
Asulox is non-toxic and will therefore do no harm to birds, insects or wildlife when in contact. It is a highly selective herbicide, which is usually applied by aerial or ground based application. A successful kill will still leave 10- 15% subsequent regrowth. This needs to be attacked with ground spraying or weed wiping.
There have been many changes over the years in legislation, rules and regulations and even manufacturers, when it comes to spraying bracken.
The manufacturer of the pesticide ASULOX used to be May and Baker then it changed to Rhone- Poulenc. After various company take overs and mergers the manufacturers name changed again to Bayer but now in 2007 we see United Phosphorus Limited being the new owners of the molecule "Asulam".
(For the latest update and further information please go to http://www.upleurope.com/)
The product Asulox was first commercialised in 1965 and was reported by H.J Cottrell and BJ Heywood

Ever since the late 1970’s we have been involved with aerial bracken spraying. We have seen many changes. However even today the only approved pesticide that will kill bracken is Asulox. Spraying with Asulox is well proven and is relatively safe
Nearly 80% of the UK sales of this product are applied by air. There is huge pressure to have this approval-removed. If this approval was lost then moor land and open high ground would see bracken spread at an alarming rate.
This would create huge problems.
So let’s remember this and let us do the job professionally and reliably and let us help keep this aerial approval.
Asulox label download
Msds sheet download
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