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Choice of variety can make or break rotation


Growers need to feel confi dent when introducing any new va- riety to the rotation because genetics can make or break a profi table year. “Resilience has been high on the agenda for growers – with yellow rust and septoria resistance a key part of this,” says NIAB cereal variety spe- cialist Clare Leaman.


Signifi cant pressures “It has been a diffi cult few years for crops, with signifi - cant pressures from weath- er extremes, pest and disease challenge, and changes in poli- cy. But no one size fi ts all so it’s important that growers look at individual profi les.”


Septoria is the UK’s most damaging foliar disease in winter wheat.


disease levels were observed. The variety was removed from the 2016/17 list. A later study con- cluded that the resistance loss was limited to Cougar, with oth- er varieties unaffected. Wheat breeder Bill Angus, of


Angus Wheat Consultants, said the demise of resistance on Cou- gar was highly predictable. “If we are not careful, we will follow the same ‘boom and bust’ cycle which has existed for yellow rust for over 60 years,” he added.


Related species “Breeders have done a really good job by accumulating minor genes for septoria resistance and this has the potential to be un- done by utilising major genes – often introduced from related species.”


Mr Angus added: “There has been a migration by growers to varieties with high levels of dis- ease resistance – but many of the resistances being deployed pres- ent high risks of variety break- down, and sadly we are now see- ing this in the fi eld. “We are likely to see variation


in resistances within the Cougar derivatives as we discover just


The right varieties can re- duce risk. “They increase the choice and range of crop pro- fi les, which allows growers to select varieties which are bet- ter suited to their conditions, as well as expanding their marketing options.” AHDB senior fi eld trial manager Mark Bollebakker says: “There are some excit- ing new varieties on the list this year – but growers need to be looking at their own specif- ic disease pressures and crop challenges rather than focus- ing on yield.” Four out of fi ve newly listed Group 3 wheat varieties were on display at last month’s Ce- reals event in Lincolnshire. “A development for this group is a notable improvement in Sep- toria resistance,” says Mr Bol- lebakker.


which minor genes have been car- ried through. A look at the ped- igrees will help as just crossing Cougar with an already suscepti- ble variety is a high risk strategy.” Growers needed to select di-


versity when it came to choosing varieties, said Mr Angus. To help them do so, there needed to to be a return to publishing variety pedigrees on the Recommend- ed List.


SHINING BRIGHT


IN ALL SITUATIONS


LG ILLUMINATE WINTER WHEAT


Casts new light on flexibility of drilling, market options, growing regions & conditions


lgseeds.co.uk/lg-illuminate @LGSeedsUK


Tel: 01472 371471 lgseeds.co.uk enquiries@limagrain.co.uk


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