Growers could see a repeat of 2020 this season when it comes to the virus yellows threat to sugar beet. Then, 38.1% of the national crop was infected with virus, estimated to have cost growers £43m and British Sugar a further £24m. The 2020 epidemic was caused by early and sustained aphid pressure, with the first virus symptoms observed by mid-June. Widespread symptom development continued throughout the summer, with infection levels varying between the four factory areas, ranging from 7% at Cantley to 61% at Wissington. Again, aphids have appeared early, and it is possible that it could be the…