
My experience with taking clay based, compact soil to a loose texture garden soil in a year.
First year was cardboard over lawn and about a 6" top dressing with a compost mix and a good broadfork over the area before planting. Great results year 1.
Last fall I covered the plot with leaves and some wheat straw plus manure. This spring about an inch of compost mix and a good broadfork before planting.
You can see the soil texture I now have compared to what I started with last spring. Maybe not the method for everybody but works great for me.