Another problem is a more pervasive albeit lower-intensity source of cadmium: phosphate fertilizer.

WSJ: Review & Outlook: China's Toxic Rice Bowl

The country's key export industries are phosphate mining, fertilizer production, and commercial fishing.

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So, if you want to help the trout stream that runs through your vacation property, Macintosh recommends making the switch to phosphate-free detergent and organic lawn fertilizer.

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Fertilizer producer Mosaic (MOS) said late yesterday it plans to reduce phosphate production, because prices have fallen to levels that are unsustainable.

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Even if some cadmium remains in phosphate, it shouldn't be a major threat to health as long as fertilizer is used in the proper amounts and with good drainage.

WSJ: Review & Outlook: China's Toxic Rice Bowl