ORGANIC FERTILIZERS

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.

TYPES OF ORGANIC

FERTILIZER

PLANT

ANIMAL

COMPOST

MINERAL

PLANT

ANIMAL

COMPOST

ADVANTAGESSLOW RELEASE OF NUTRIENTS

LONG-TERM BENEFITS TO THE SOIL

LONG-TERM BENEFITS TO THE ENVIRONMENT

CHEAP AND COST-EFFECTIVE

SAFETY

DIS

ADVA

NTA

GES Takes longer

time

High demand, low supply

Simple but messy and inconvenience

REFERENCES• 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

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