Thats a new one on my
My Dad dug the garden over, left it for the frost to break it up, he left it over the winter, then come spring, just raked it over, broke up any clods that didnt break down
He like planting spuds, he tried cabbages once but the caterpillars ate the lot
Tried carrots, plenty of foliage, nothing below the surface
He dragged us over the fields gathering horse and cow manure (non of us liked going over there, but we were kids