QUIZ – This week in agronomy – August 6

While out scouting this week, you might come across a few scenarios like these. The detailed answers will provide some good agronomy tips.

1. What is this grasshopper doing?

Eating canola, of course

Hanging on in a heavy wind

Suffering from fungal infection

Resting in the heat

2. What caused the stem damage within the red circle?

Blackleg

Hail

Sclerotinia stem rot

Verticillium stripe

3. What caused this leaf lesion?

Blackleg

Hail

Diamondback moth larvae

Sclerotinia stem rot

4. What is this insect?

Aphid

Cabbage seedpod weevil

Dirt-coloured seed bug

Lygus nymph

5. You still want to scout clubroot-resistant hybrids for clubroot because they won't have resistance to all the clubroot pathotypes. How many clubroot pathotypes are known in Canada?

5-10

11-20

21-30

30+

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If any insects or diseases need to be sprayed this week, check the pre-harvest interval for each product and make sure the timing is correct for good management.