How to grow BIG potatoes?
What do I need to do to grow a handful of BIG potatoes vs. 4 handfuls of small potatoes?
I'm not sure if it's just my memory playing tricks on me, but (the way I remember it) a few years ago I used to get maybe 3 or 4 BIG Kennebec (for instance) potatoes but last year it seemed like I was getting 6 or 8 small to medium sized ones. I've been growing them the same way over the years, but last year I added so 10-10-10 fertilizer that I had laying around.
My soil is very good for patotes....light and very good drainage, but it's probably low in organic matter. My neighbor down the road grows his is raised beds he made out of hay bales and compost and gets much bigger spuds. For instance, when I grew All Red a few years ago, I ended up with a bunch of small to medium sized potatoes, but when my neighbor grew the same type last year, he ended up with some very big potatoes that I couldn't believe were the same type.
Should I just line my trenches with compost above and below my seed potatoes? I usually dig the trench, add the potatoes and sprinkle a light layer of compost along the entire trench. Maybe I should just bury the seed potatoes in compost?
Any thoughts or suggestions for bigger potatoes would be appreciated.