DrKiz
Well-Known Member
In my dissertation for my masters, I covered how to mitigate this problem in the planting depth and seed orientation section.
Pretty much this. I’ve found you can place a seed in a rapid rooter pointy side down where the root pops out.
And at proper depth so that the seed doesn’t pop out of the rapid rooter too soon.
If you plant it too shallow you get what OP has, a helmet head that dries and hardens when it breaks surface and won’t come off.