Gardeners keen to boost their crop of tomatoes may be surprised to learn they can turn to an unusual and free source of fertilizer.
Allotment growers can enrich the soil and therefore their plants using their own wee, according to a new study.
Scientists discovered the unusual addition made crops up to four times larger.
A team of Finnish researchers found that sprinkling tomatoes with human urine mixed with wood ash was the ultimate eco-friendly fertilizer.
It worked just as well with cucumber, corn, cabbage and other crops.
Although scientists have previously tested urine on plants, this is the first one to mix it with wood ash.
Read more: at the dailymail
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