Human Urine a Sustainable Fertilizer for Vegetable Production
Call it urine therapy or “Father Riwa’s Dose, urine is a
good source of Nitrogen and it is useful for growing tomatoes. It is a good way
to solve sanitation problems, improve the environment and increase food
production.
A study has found that plants fertilized with urine produce
four times more tomatoes than unfertilized plants. Urine, a good source of
nitrogen, has successfully been used to fertilize cucumber, corn cabbages and
other food crops.
Wood ash, another source of minerals works well when added
to the urine and helps to check the acidity of the soils.
The results, in the study done by Surendra Pradhan and
colleagues in Nepal, suggests that human urine, with or without wood ash can be
used as a substitute as mineral fertilizers to increase the yields of tomatoes
without posing any microbial or chemical risk.
In conclusion, human urine and wood ash can be used instead
of synthetic fertilizers (which are very expensive) or animal manures as a dose
of 4 litres of urine is equal to the 1kg of dry manure.
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