Showing you my grit/oyster shell feeder I made today. The lid flips up to fill the tubes and is slanted to discourage chicken roosting. The wood is unfinished and all edges are sanded for the chicken's safety.
Rotating crops is necessary for maintaining healthy soils. Crop rotation is when different plant groups are planted in a field every year. Crop rotation makes the soil more fertile and helps to mitigate crop failure and soil erosion.