QUIZ - Blackleg - Canola Watch

1. What is the blackleg disease severity rating for these canola stem cross sections?

1

2

3

4

2. When cutting canola stems for blackleg disease severity ratings, what is the standard protocol for cut location?

10" above ground level

1" above ground level

At ground level

1" below ground level

3. Blackleg seems to be worse this year (although we don't have official survey results to prove it). Why might blackleg be worse this year?

Wet spring combined with dry, hot finish are ideal for blackleg

Major gene resistance may not align with major races in the field

Rotations are tight

All three