QUIZ – Aster yellows

Four questions on a canola disease that often shows up here and there in a few plants. Sometimes it flares up to more serious levels. Are you the master at aster yellows?

1. Which image shows aster yellows symptoms?

2. Aster yellows disease is the result of phytoplasma infection. How does the phytoplasma enter canola?
3. University of Saskatchewan researchers Sean Prager and Berenice Romero made a recent discovery about aster yellows. What was the discovery?
4. Tyler Wist, insect research scientist with Agriculture and Agri-Food Canada, says leafhopper numbers and phytoplasma infection rates are high for 2023. This could mean more symptoms in canola fields. The last year that Canola Watch reported high levels of aster yellows was when?