I won't harvest the produce until a month or so from now, I want to grow mix lettuce, Mizuna, and other fast growing crops, then of course the nightshades and such that won't be ready until July or so. So basically I won't to be able to harvest within a month if possible.
I have heard fresh cow manure burns the plants. Also since I will be growing mix lettuce and such, and if it only gets tilled (not plowed), then will I have to worry about disease or contamination? I assume roto-tilling will get 4 to 6 inches deep.
How fast does cow manure decompose once tilled?