In this particular area, I noticed that a section had lighter colored soil and it was actually DRY. I had to think about it for a second, then recalled that I had not used this light colored spot for gardening last year. Instead, I stored the buckets and trash cans there instead.
Without the benefit of tilled in compost, mulch, and manures, the soil isn't retaining moisture like the rest of the soil around it. Wow, it's quite a good example of the benefits of adding organic material to garden soil.
After I finished the initial tilling, I retrieved a wheelbarrowful of compost to add to that dry area.