QUIZ – Storage risks

1. Canola Watch had a reader question a few years ago asking if chlorophyll content (green) in canola seeds will diminish in the bin. What is the answer?

Farmers can count on significant improvement in storage.

Farmers should not count on significant improvement in storage.

2. Under what scenario can green content in canola seeds be reduced after swathing (and before combining)? 

It can’t. Green seed is locked in after swathing

Warm temperatures and seed moisture above 20%

Cool temperatures (less than 10°C) will trigger green removal

Green percentage is related to moisture: Lower moisture is lower green

3. Concentrated areas of chaff can be a start point for spoilage, even in a bin where the seeds test dry. The risk from high-moisture dockage tends to be higher in what situation?

Straight-combined canola

Swathed canola

4. Canola binned hot can spoil even if moisture is 10% or “dry”. What is the recommended safe maximum temperature for long-term storage? 

25°C

20°C

15°C

10°C

5. In a new Canola Digest article called Flatten the peak for better airflow, Chandra Singh, senior research chair in agricultural engineering and technology at Lethbridge College, says his research showed airflow rates through grain along the sides of bins were ____________ than airflow rates closer to the centre where grain depth is greater. (Fill in the blank.)

50 per cent higher

two to three times higher

up to five times lower

considerably less

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Five questions on storage risks for 2022 canola, including green seed, hot harvest days, harvest method and airflow.