Organic compost curing on tea estates: C:N ratios and Eisenia fetida vermicomposting?

Producing certified organic compost on high-elevation tea estates requires establishing a strict carbon-to-nitrogen (C:N) ratio of 25:1 to 30:1 in windrow heaps. Estates blend high-nitrogen green materials (fresh loppings of Gliricidia and Erythrina shade trees, cow dung slurry, and factory tea fluff waste) with high-carbon brown biomass (shredded Mana grass, dry Grevillea leaves, and spent wood shavings). The compost piles are turned every two weeks to maintain internal aerobic thermophilic temperatures (55-65°C), killing weed seeds and pathogens before transferring to shaded vermicomposting beds stocked with Eisenia fetida worms to produce finished vermicastings.