i am going to apply about a 1/2 inch of compost on a really hard clay/rocky soil in a week. should i wait until right after it rains to apply it so it will absorb into the soil better? or should i apply it right before it rains? does it matter? the lady doesn't wanted to aerate or i would do that. also, on a previous thread i read to follow a compost application up with protein sources. do you have to do this even if i just applied an organic fertilizer today that contains soybean meal and alfalfa meal?