BTS 5770 BTS 5770 has one of the best disease resistance packages available along with high sugar content, says Ron Granger, arable technical manager for Limagrain.
“Sitting among the pack for highest yields [101.5%], BTS 5770 offers flexibility in drilling, showing excellent early sown bolters and normal sown bolters characteristics.
“BTS 5770’s robust disease resistance profile illustrates how sugar beet breeders are raising the bar when it comes to breeding for disease resistance.
“The variety has an 8.1 rating for rust, 5.2 for powdery mildew and the limited available data from both Betaseed trials and the RL trials suggests it has better than average cercospora resistance.”
BTS 3020 BTS 3020 joins the RL as the early bird variety in the Limagrain portfolio having consistently delivered three years of very low bolter counts in the early sowing period before March 5, says Mr Granger.
“This result has been consistent over the last three years, including data from 2020, which we know was a higher year for bolting.
“BTS 3020 has high adjusted tonne yields of 102.2%, the third highest yielding variety on the RL, and again also offers a very good disease resistance package with a rating of 7.5 for rust and 4.6 for powdery mildew.”
Katjana KWS With an adjusted yield of 102.7% of controls, Katjana KWS is the highest yielding variety with tolerance to beet cyst nematode (BCN).
Ben Bishop, KWS country manager for sugar beet in the UK, says: “Katjana KWS is our highest-yielding BCN-tolerant variety and, with its excellent low-bolting performance, will appeal to those seeking to reduce their risk from this pest for which there are few conventional methods of control.
“We expect it to find interest among those with a history of BCN as well as those looking to protect the viability of land for the long term.”
Smart Rixta KWS As growers ponder weed control strategies without desmedipham, the appeal of the Conviso Smart system continues to grow, says Mr Bishop.
“The addition of Smart Rixta to the BBRO RL marks the solid progress KWS is making in bringing varieties to market with tolerance to ALS herbicides.
Smart Rixta KWS is a good fit to this system, with low bolting when sown in the main drilling window and an adjusted yield close to the average of control when grown under the Conviso Smart system.”
Smart Rixta KWS offers a yield of 92.2% compared with existing RL variety Smart Janninka KWS at 88.6%.
Maruscha KWS Sugar beet growers will have the option of growing virus yellows-tolerant beet in 2022 with the addition of Maruscha KWS to the BBRO RL.
But the distinct nature of the viruses involved means that tolerance to one form of the virus does not necessarily confer equal protection against another, says Mr Bishop.
“Maruscha KWS is the first variety to come through the KWS breeding programme with a level of tolerance that supports commercially-viable yields. It has recorded minimal losses to beet mild yellowing virus infection and respectable losses with beet yellows virus compared to those seen in susceptible varieties,” says Mr Bishop.
The introduction of varieties with tolerance to yellowing viruses represents an opportunity to protect yields but exploiting this possibility will also involve the continued use of cultural measures, such as good field hygiene, adds Mr Bishop.
Wren Wren, from SESVanderHave, has been developed and tested under UK conditions and tailored to the needs of Britain’s sugar beet growers, according to the company.
SESVanderHave UK managing director Ian Munnery says: “UK growers face the twin challenges of an uncertain market and variable weather patterns every season.
“Wren has been selected from our extensive breeding programme, in which we have invested in more than 25,000 trial plots each year in the UK over the 10 years it takes with conventional breeding to bring a new variety to market. Therefore, we are confident it will perform consistently well regardless of what the environment throws at it and show the durability you would expect from our varieties.”
Wren has the highest root yield (104.5%) of the new entrants, second to BTS 1915 (107.3%) on the RL.