Monday, August 19, 2019

Seven new varieties added to 2020 recommended list

June 4, 2019 by  
Filed under Crops

Seven new varieties from three breeders have been added to the Recommended List (RL) for 2020 –  including the first ALS herbicide tolerant sugar beet variety.

Published last month, additions to the new recommended list are Advena KWS and Smart Janninka KWS, both from KWS UK; BTS 4100 from Limagrain UK; and Vixen, Conger, Puffin and Lightning – all from SESVanderHave UK.

The new varieties reflect ongoing improvements in yield and other key characteristics, such as early-sown bolting. Notable this year is the introduction of ALS herbicide tolerant sugar beet variety Smart Janninka KWS to the UK market.

Challenging season

Despite a challenging growing season, control varieties in the trials achieved a mean yield of 112t/ha (adjusted) with new varieties offering up to a 4.0% yield increase above that, highlighting the resilience of sugar beet in difficult conditions.

Recommended list chairman Mike May said 2018 was a difficult growing season for the commercial crop and trials alike. “Adverse weather delayed drilling followed by a prolonged drought and a late burst of nitrogen when the drought finally broke in the autumn.”

Breeders had put much effort into producing low bolting varieties specifically for UK conditions, said Mr May. Six of the new varieties did not bolt in any of the RL normal sown trials drilled after 15 March during any of the three years of testing from 2016 to 2018.

Specific traits

These were Advena KWS, BTS4100, Vixen, Conger, Puffin and Smart Janninka KWS. However Smart Janninka KWS did bolt when sown early and Mr May said it was not recommended for sowing before 15 March.

That said, it was good to see Smart Janninka KWS on the list as the first ALS herbicide tolerant variety. “The herbicides for use with this variety – as an integral part of the Smart Conviso system – have now been approved and should be available for the 2020 sowings,” said Mr May.

Before ordering BCN, AYPR partially resistant or ALS tolerant varieties, growers are advised to discuss options with their contract managers, agronomists or breeders who will have more information on varietal performance and use in the presence of specific challenges.

Further details

The recommended list table can be found on the BBRO website at bbro.co.uk with supplementary tables showing three-year data for each variety, plus seed provenance, juice impurities and vernalisation experienced during early-sown bolter trials over the last three years.

The average plant population harvested in the 2020 recommended list table was 106,000/ha and average sugar content 17.9%. Numbers of early-sown bolters are from trials sown in  late February and up to the first five days of March.

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