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Revision as of 01:21, 23 July 2002 by 217.168.172.202 (talk)(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 either be created from nature material such as manure or compost or it can created artificially as through the Haber-Basch process which creates ammonia.