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Revision as of 12:38, 15 September 2002 by 217.168.172.202 (talk) (slight re-wording)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)Fertilizer are substances brought with the intent of promoting plant growth.
Fertilizer typically adds to the soil major elements nitrogen, potassium, or phosphorus, secondary elements calcium, sulfur, magnesium, sodium and sometimes trace elements. Fertilizer can be created either from nature material such as manure or compost, or artificially as through the Haber-Basch process which creates ammonia.