Vermicomposting is a way to recycle agricultural waste using earthworms. Researchers studied how different types of organic waste affect earthworm populations. They found that earthworms did well in rice straw, garden waste, and cattle dung, but struggled in tea residues and herb waste. The earthworms' growth was linked to the amount of nitrogen in the waste. When nitrogen levels got too high, the earthworms didn't do as well. The researchers suggest monitoring the waste regularly and removing the earthworms when the nitrogen levels get too high. This will help keep the earthworm populations healthy and the vermicomposting process efficient.