Great info Grouse. One other mistake I may have made. I think I overseeded my brassica hunt plot causing too much competition between the plants.
Brassicas are VERY sensitive to being too crowded. See the post “Don’t be that guy” on the Midwest Monster Blog where I show what happens when someone (in this case, um, me) seeds too heavily.
This is a really common mistake with brassicas. Food plotters complain all the time to me, “Yeah, I tried brassicas but all I got was little itty bitty golf ball-sized turnips and such.”
Then I ask them to show me how far apart where these brassicas. They usually show me a couple of inches apart. That’s way, way too close.
A brassicas plot should NOT look like a green carpet when it is young. You should see plenty of bare dirt around every plant. Brassicas are fast-growing, but as such they need space because they suck up a LOT of fertilizer. Crowd them and they’ll never forgive you.
And BTW, the second issue I see constantly with brassicas is lack of fertilizer. Guys don’t believe me when I tell them that the MINIMUM fertilizer routine I recommend is:
1. At planting – 20-20-20 at 100 to 150 pounds per acre.
2. When plants are 6-8 inches high on average – 64-0-0 (also called Urea) at 100 to pounds per acre.
3. Monitor plants for yellowing leaves that are not attributable to drought. Top dress as needed to maintain green plot.
So that’s at least 200 pounds of fertilizer per acre of brassicas. Really. And often they need more. Some food plotters find this hard to believe so they skimp and then are finally surprised at how big their brassicas get when they finally do follow the recommendation.