With fertilizer prices jumping nearly 50% per metric ton over the last year in some places, human waste is an attractive, and often necessary, alternative.

It will drive producers of chemical fertilizers out of business.

In cases where sewage mud is used, expensive chemical fertilizer use can be avoided.

Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage ( ' , 下 水道污水) to irrigate and fertilize nearly 49 million acres of cropland, according to a new report—and it may not be a bad thing.

But frequently untreated human waste harvested from lavatories is delivered to farms and spread as fertilizer.

Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage to irrigate and fertilize nearly 49 million acres of cropland, according to a new report—and it may not be a bad thing.

These practices include grazing animals on grasses grown from the pastureland's natural seed bunk, and fertilized by the cows' own fertilizer.

with fertilizer prices jumping nearly 50% per metric ton over the last year in some places, human waste is an attractive, and often necessary, alternative.