Good Landlord of the Tang Dynasty.

Summary

The sixth update discusses Zhang Chao's efforts to change the perception of manure use among farmers. He explains the importance of decomposing manure before application to avoid harming crops. Despite resistance from experienced farmers, Zhang Chao constructs a fermentation pit to produce biogas fertilizer. This involves layering ash and partially fermented manure, sealing the pit to facilitate fermentation while managing gas pressure. The process aims to create nutrient-rich fertilizer and biogas, though the biogas must be used quickly to retain potency. Zhang Chao's ultimate goal is to establish a profitable fertilizer business while managing the complexities of fermentation.

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