Authorities warned not to harvest crops or drink well water. Slave labor demands varied based on region and on the type of harvest crop. This will eventually lead to water scarcity and cutbacks in grain harvest. There are spirits who come to help the reapers in gathering the harvest. Mature date palms can produce of dates per harvest season. These include decisions about pruning, irrigation and selecting time of harvest. However, alcohol production was dependent upon the potato harvest. Altair was also the star that ruled the annual sweet potato harvest. Recreational fishing accounts for an insignificant portion of the spiny dogfish harvest. Tasmania supplies about 25% of the yearly world abalone harvest. In 2005, China accounted for 80% of the global oyster harvest. Fonio is labor intensive to harvest and process. Multiple generations would often harvest the same Camas plot. It was equivalent to a harvest festival. Lono is the god of peace, rain, harvest, and fertility.