2. WHAT IS ORGANIC FERTILIZERS
• Organic fertilizers are the result of a decomposition process of the
organic remainders, by the diverse organisms action.
• The remainders are transformed in assimilabie nourishments to the
plants.
• Organic fertilizers are rich in nourishment, and low cost because their
raw material is generally found in the farm.
• Fertilizers derived from animal or vegetables(e.g compost , manure).
• Naturally occuring include manure, slurry, worm castings, peat,
seaweed, humic acid, and guano.

3. PLANT
MINERAL
TYPES OF
ORGANIC
FERTILIZER
COMPOST
ANIMAL

4. PLANT

5. ANIMAL

6. COMPOST

7. ADVANTAGES
SLOW RELEASE OF NUTRIENTS
LONG-TERM BENEFITS TO THE SOIL
LONG-TERM BENEFITS TO THE
ENVIRONMENT
CHEAP AND COST-EFFECTIVE
SAFETY

9. REFERENCES
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Meaning of organic fertilizer – princeton.edu
Organic farming | argriculture |US EPA
http://www.ewg.org/reports/sludgememo
calOrganic farms news
Acta horticulturae
AZ master gardener manual : organic fertilizers
Soil microbial biomass and activity in organic tomato farming systems :
effects of organic inputs and straw mulching 10.1016/j.soilbio.2005.05.002 :
soil biology and biochemistry
Plantsfood.com
Eutrophication
Costs of slurry manure application and transport
Ciwmb.ca.gov – organics document
Basics of gardening.com
EDU.UDYM.com