Oilseed rape
New oilseed rape variety rewrites Clearfield rules
• UK’s highest yielding variety to date • Four disease and yield protection traits • Best agronomic package available
new Clearfield oilseed rape is the first ever variety to layer four complex traits together without compromising yield, claims breeder DSV. Added to the AHDB Candidate List for 2021/22, the variety is a significant advance in Clearfield winter oilseed rape and addresses many of the short- comings of previous varieties, says the company’s Michael Farr. Based on a oilseed rape varieties resistant to the herbicide Imazamox, Clearfield technology has proved ben- eficial to growers in recent years be- cause it makes it easy to control perni- cious brassica weeds, he says. “The system has provided reliable control of problem weeds such as char- lock, runch and hedge mustard – but has also opened up significant man- agement opportunities for many grow- ers in recent years including reducing erucic acid levels at harvest.”
A
Good efficacy Clearfield’s efficacy is so good that even fields which have been out of produc- tion for many years – often due to large weed burdens – can be made suitable for growing oilseed rape again, adds Mr Farr.
“The added flexibility Clearfield
provides around early weed control strategies means the technology can also be used help fine-tune time of drill- ing and reduce competition during es- tablishment.” In the past, the price for all these
benefits has often been reduced yield. Although varieties like DSV Plurax CL have done much to address this in re- cent years, it has still remained an is- sue for many growers.
“What has been missing from the market is a fully featured hybrid oil- seed rape combining the very best ag- ronomic package available featuring layered disease and yield protection traits with Clearfield technology but without the yield penalties. “The introduction of Matrix CL al- lows the grower to choose powerful post emergence Clearfield chemistry with- out facing the potential drop in perfor- mance shown in the previous genera- tions of varieties.
Impressive numbers “The variety’s production figures are impressive to say the least. Matrix CL is one of a few varieties selected as a candidate for the whole of the UK mak- ing it suitable for growing in both the North, and East and West regions.” But it has performed particularly
Trio of firsts for DSV
The inclusion of the variety on the AHDB Candidate List for 2021/22 concludes a trio of firsts for DSV recently with DSV Duplo and DSV Dart also making it on to the new candidate list. DSV Duplo has an oil content of 46.8% and a yield
of 109% for the East and West region plus RLM7+ multi-gene phoma stem canker resistance, turnip yellow virus (TUYV) resistance and pod shatter resistance. DSV Dart has an oil content of 45.7% plus a gross
output of 113% in the East and West region and is the first of the company’s varieties to feature the new HarvestMax technology to reduce harvest losses.
The production figures are impressive to say the least
“
well in the East/West region where it has achieved a gross output of over 108% and an oil content of 46.0% over- all, says Mr Farr. “It’s definitively the highest yield- ing Clearfield variety currently avail- able to UK growers but its superiori- ty doesn’t stop there. It’s got the best agronomic package seen in any Clear- field variety to date.”
Matrix CL is the first commercially
available UK variety to combine Clear- field technology with TuYV resistance, pod shatter resistance and RLM7+ re- sistance to phoma stem canker. “With improved vigour over even DSV Plurax CL and mirroring the vig- our profiles of the top performing hy- brids in both autumn and early spring, Matrix CL has performed particular- ly well in our high pressure flea bee- tle trials.”
Boasting high winter hardiness, Matrix CL also achieves top standing scores including 9 for lodging and 8 for stem stiffness with a medium flow- ering score of 5 and an early maturi- ty score of 6.
44 ANGLIA FARMER • JULY 2021
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