• Beets fertilized with human urine were 10 percent larger, and those fertilized with urine/ash were 27 percent larger than those grown with conventional fertilizer
• Urine is naturally rich in nitrogen, potassium and phosphorus – the same ingredients in conventional fertilizers
• Urine is sterile, free and readily available, although urine-separating toilets required for widespread collection are rarely used
• Urine represents a viable natural alternative to chemical fertilizers, as do other sustainable options, like enriching the microorganisms in the soil

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