The compost in-placer system is a static pile that is passively aerated. All the composting occurs in the wooden chamber and it is never turned. The system is lined with chicken wire and a lid is placed on top to prevent rodents from entering. Before starting the weekly feedings, a small layer of soil with greens was spread over the bottom of the system.
System Details
Over time, the leachate and decomposed material in the system sinks into the raised bed that the composter sits on. This creates a nutrient rich, moist, and active soil just beneath the compost in-placer.
Once the soil beneath the compost in-placer has been thoroughly enriched, the system can be placed in another section of the garden bed that is in need of soil nourishment.
The lid does not seal the system and there are gaps in the wood, so air is able to pass through easily.
Curing and Harvesting
Once the system is filled to the desired level, the compost will need to cure for about 6 months.
We suggest having two of these systems to allow for continuous feeding. The idea is that while the first system cures, the next system is started. Then once the first system is done curing and is emptied, it can be restarted.
System Takeaways
After a few months, the soil just beneath the system hosted plenty of earthworms, isopods, and other soil actors. The moisture level was adequate and and there was little to no aggregation.
The compost maintenance crew had no issues with this system and it was easy to maintain.