I think I will try covering the grass for one week with a tarp. I was told this works well for killing grass. I would prefer this over a product like roundup.
I will have to admit that the early planted crops seems to be doing noticeably better than in the past
Did you seed the rye egon or is it just "volunteer"?
I think you are maybe referring to 'solarization'? This only works if the temps underneath are high enough to sterilize soil/seeds etc. Ever pick up a board on the ground and all the grass is still there but just yellow? That's what will happen if the temps are not high enough.
Killing with roundup etc certainly helps but it is not a total requirement. If you have a grass that comes back from rhizomes it probably is. Otherwise you will just get some grass clumps that comes back and are easily pulled from the loose soil. Grass and weed seeds etc aren't going away with roundup anyway.
I prefer to not broadcast fertilizer and work it in... the stuff that ends up between the rows etc just helps the weeds grow. I like to use Osmocote slow-release and just sprinkle it around the plants.
Do you use the hamburger as an armrest 8^) ?