Have you seen any drop off or is it too soon to tell this year? We started with 100 plants last year in two 100' by 42" wide beds bordered by my tractor prints that are about a foot wide that I wood mulch. We also did the pinch thing year 1. This year, we have given up controlling them on three sides and just try to control them on the fourth side so that they don't overrun the rest of the garden. You can't even tell that there is a row of wood mulch between the two beds or around the edge. So, we end up with 12'x100' of mayhem and the critters are enjoying what makes it through the fence on the three sides. Your raised beds must be a huge advantage when it comes to control.
So, I'm thinking that I will transplant 100 plants into the bottom of the upper terrace year 3 to start the process over. Then, after production dies off, till the bottom of the lower terrace under and plant some kind of cover crop to build up the soil. I may eventually convert to raised beds but the tiller on the back of the tractor makes quick work of cleanup in the fall, prep in the spring and the subsoiler does a nice job of breaking up the clay/glacial till we are so blessed with.
So, I'm thinking that I will transplant 100 plants into the bottom of the upper terrace year 3 to start the process over. Then, after production dies off, till the bottom of the lower terrace under and plant some kind of cover crop to build up the soil. I may eventually convert to raised beds but the tiller on the back of the tractor makes quick work of cleanup in the fall, prep in the spring and the subsoiler does a nice job of breaking up the clay/glacial till we are so blessed with.