I have an approx 1000sf bermuda lawn in a 30yr old home I purchased few years ago. Previous owner didn't do much anywhere on the property for soil improvement so underneath the grass is pretty much alkaline clay. I've been slowly converting my whole yard to organic methods.
This last week I spike aerated the whole area, spread some gypsum to soften it up before the rains came and just spread out 10cf of composted steer manure. The lawn should be greening up in about a month but what else should I do to "add organic matter to the soil."? I just spent hours aerating so I wanna get the goods down in there before the holes are closed up.
Next on my list is to get a 25lb bag of alfalfa pellets this week. I don't have enough compost to cover the area. Is there anything else cost effective? Is spraying some hydrolyzed fish effective for improving the soil itself? I can get a big 20lb bag of worm castings for like $12. What about pelleted pasteurized chicken poop?