So over the last 18 months I have added 4 cover crops.. Oats, peas , rye and Mustard. Several truck loads of compost. 20 straw bales (For weeds..ugh) Patch size 3500 sq. I also used Kelp meal, Azos , soluble seaweed, cracked corn and managed to bring the OM up to 4 percent. I need to keep better notes.