Has little to do with the flax itself but the residue. Or lack of it, esp if its harrowed and burnt. If you have lots of residue or a system like seeding into tall stubble, moisture is not an issue for the canola crop. Just don't grow liberty after flax.
Flax depends strongly on mycorrhizal fungi in the soil to bring nutrients like phosphorus back to the plant’s roots. Because canola is not a mycorrhizae host, it does not leave behind a network of mycorrhizal strands capable of colonizing the new flax roots early in the season. As a result, the young flax plants have a tough time getting all the nutrients they need. Crops like wheat, barley, corn and pulses are mycorrhizae hosts and are more likely to leave behind a mycorrhizal network for the next crop.
from Guy L's work on flax and rotation...
http://www.agannex.com/agronomy/what-is-the-best-stubble-for-flax
Flax depends strongly on mycorrhizal fungi in the soil to bring nutrients like phosphorus back to the plant’s roots. Because canola is not a mycorrhizae host, it does not leave behind a network of mycorrhizal strands capable of colonizing the new flax roots early in the season. As a result, the young flax plants have a tough time getting all the nutrients they need. Crops like wheat, barley, corn and pulses are mycorrhizae hosts and are more likely to leave behind a mycorrhizal network for the next crop.
from Guy L's work on flax and rotation...
http://www.agannex.com/agronomy/what-is-the-best-stubble-for-flax
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