Abstract

Human urine as alternative natural slow reiease fertilizer

Organically agricultural products are gaining popularities through out of the world as it gives the consumer satisfaction with a basket of safer and better trusted foods. Besides this fact, organic crops contain fewer nitrates, nitrates, pesticides residues and trace elements than conventional crops. One of the major constrains of organic forming is decrease of raw organic matters to prepare compost. The second and the most constrain of organic forming in Egypt is the high temperature most of the year. This causes decrease in using of organic matters only four months in the year. In Egypt, scientists are looking forward for different organic source which are plenty in nature and available at little – to – no cost. Human urine is one of them, and has been gaining popularities as a raw material for organic cultivation. However, the direct use of human urine as agricultural fertilizer is problematic and controversial with regard to hygiene, storage, and transport and spreading. By addition of small amount of MgO or Bittern to synthetic or natural human urine a crystalline structure of {Mg (NH4) (PO4). 6H2O} which is known as struvite precipitates as major component. XRD- analysis and EMS- EDS analysis were used to determine fertilizer quality. The test for slow release Fertilizer and the Activity index are studied to assists struvite as slow release fertilizer which fits the Egyptian whether and soil.


Author(s): Sh. El Rafie, M. S. Mohamed, S. Hawash

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