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Sustainable Fertilizer: Urine And Wood Ash Produce Large Harvest

Date:
September 17, 2009
Source:
American Chemical Society
Summary:
Results of the first study evaluating the use of human urine mixed with wood ash as a fertilizer for food crops has found that the combination can be substituted for costly synthetic fertilizers to produce bumper crops of tomatoes without introducing any risk of disease for consumers.

Human urine and wood ash appear to make a potent, inexpensive fertilizer combination for boosting the productivity of food crops, scientists say.
Credit: iStockphoto/Jim Jurica

Results of the first study evaluating the use of human urine mixed with wood ash as a fertilizer for food crops has found that the combination can be substituted for costly synthetic fertilizers to produce bumper crops of tomatoes without introducing any risk of disease for consumers.

In the study, Surendra Pradhan and colleagues point out that urine, a good source of nitrogen, has been successfully used to fertilize cucumber, corn, cabbage, and other crops. Only a few studies, however, have investigated the use of wood ash, which is rich in minerals and also reduces the acidity of certain soils. Scientists have not reported on the combinaton of urine and wood ash, they say.

The new study found that plants fertilized with urine produced four times more tomatoes than nonfertilized plants and as much as plants given synthetic fertilizer. Urine plus wood ash produced almost as great a yield, with the added benefit of reducing the acidity of acid soils. "The results suggest that urine with or without wood ash can be used as a substitute for mineral fertilizer to increase the yields of tomato without posing any microbial or chemical risks," the report says.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Pradhan et al. Stored Human Urine Supplemented with Wood Ash as Fertilizer in Tomato (Solanum lycopersicum) Cultivation and Its Impacts on Fruit Yield and Quality. Journal of Agricultural and Food Chemistry, 2009; 57 (16): 7612 DOI: 10.1021/jf9018917

Cite This Page:

American Chemical Society. "Sustainable Fertilizer: Urine And Wood Ash Produce Large Harvest." ScienceDaily. ScienceDaily, 17 September 2009. <www.sciencedaily.com/releases/2009/09/090902112750.htm>.
American Chemical Society. (2009, September 17). Sustainable Fertilizer: Urine And Wood Ash Produce Large Harvest. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2009/09/090902112750.htm
American Chemical Society. "Sustainable Fertilizer: Urine And Wood Ash Produce Large Harvest." ScienceDaily. www.sciencedaily.com/releases/2009/09/090902112750.htm (accessed July 29, 2014).

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