Urine as pesticide and fertilizer

•Pesticide•Fertilizer•Preparing organic urine fertilizer•Graph on growth rate / plant damages•Extraction of fertilizer from urine

• A pesticide is a substance or mixture of substances used to kill a pest.

• Pests include insects, plant pathogens, weeds, birds, mammals, fish, nematodes (roundworms), microbes and people that destroy property, spread or a vector for disease or cause a nuisance.

•Fertilizer (or fertiliser) is any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a soil to supply one or more plant nutrients essential to the growth of plants.

Pesticide use raises a number of environmental concerns. Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, including non-target species, air, water, bottom sediments and food.

• . Pesticides are one of the causes of water pollution, and some pesticides are persistent organic pollutants and contribute to soil contamination.

•Hence the shift to a more environment-friendly pesticide is encouraged. • This organic pesticide utilizes human

urine and plant spices such as:

Plant spices for urine pesticideCurcuma longa (dulaw) pithecellobium jiringa (jering seeds)

Tinospora crispa(Brotowali)

Parkia speciosa (bitter bean)

Plant spices for urine pesticide

Procedure of pesticide preparation:

1. Grind the plant mixture mentioned above.2. Boil .3. Add urine to the mix.4. Ferment for 2-3 weeks.5. Add a grinded red pepper and red onion to the fermented

mixture.6. Close the container for 3-4 days.

This prepared pesticide could now be diluted with water for spray or sprinkled over the plant.

Urine as fertilizer

• Urine has a fertilizer value of N/P/K 18:2:5 (2).• Each individual produces 1.5 L of urine per

day.• In general, pure human urine contains

very few enteric microorganisms . • The nutrient content present in human

urine may mean it can be a good fertilizer for plants.

Growth rate compared

Damages compared

The Recycling of Nutrients from Human Urine

I. Phosphorus Recovery• Phosphorus can be recovered by mixing the urine with

magnesium, which binds with the phosphorus and the nitrogen.

• The generated precipitate is composed of struvite or MAP (magnesium ammonium phosphate), a solid mineral fertilizer.

The Recycling of Nutrients from Human Urine

II. Nitrogen Recovery • When the temperature and the pH of urine are increased, the

nitrogen prevails in the form of volatile ammonia. • Ammonia can easily be removed from the liquid phase

through air stripping and subsequently be absorbed in sulfuric acid to form ammonium sulfate, a liquid fertilizer.

Thank You