International Ag Labs has found a good source of chicken manure that comes from cage layers. It's dried and pelletized and put into a granule. The analysis is 4-3-2 11% Ca -- this is a pretty significant calcium source.
Chicken manure provides a good form of natural boron and a lot of trace minerals as well. Due to the high heat and the processing of this, there would be no biology in it, but the minerals and the organic materials would make for a very good enhancement in soil.
This product is very good to be used along with the other minerals needed to remineralize the soil, particularly soft rock phosphate and limestone. The reason this assists in that is that the chicken manure will begin to break down in the soil fairly quickly. As it does, it creates organic acids and those organic acids help break down the mineral fertilizers that are nearby. So the acids would help to break down the soft rock phosphate and the limestone, making both the calcium and the phosphorus more quickly available to the crop.
The chicken manure provides some good organic material as well and this would actually release some carbon dioxide into the soil which can be picked up by the root and can be an in-soil source of carbon dioxide, which is many times lacking in many fertility programs.
This product is available by bulk semiload at present, and in the future it may be available in tote bags.
If you have any further questions, you can call Gary for pricing at the number above, or if you want to know more about the impact of chicken manure, you can send your request to International Ag Labs via the form below.