Photo by Melody

Definition of organic fertilizer

Categorized under "General"

Definition as written by Terry:

Fertilizers derived from animal or vegetable waste, or minerals occurring in nature. The table below (courtesy of Mel Bartholomew's Square Foot Gardening information) shows the percentage (by weight) of nitrogen postassium and phosphate of several common organic fertilizer substances.

Material______________N%____P%___K%

blood meal
........................15.0.........1.3........0.7

bone meal
......................... 4.0........21.0........0.2
cocoa shell meal .............. 2.5.........1.5..........2.5
composted horse manure 0.7.........0.3..........0.6
composted leaf mould .... 0.6.........0.2..........0.4
corn stalks ........................ 0.8.........0.4..........0.9

cottonseed meal
.............. 7.0.........2.5..........1.5

dried blood
......................13.5.........3.0..........0.0
dried cattle manure ......... 2.0.........1.8..........2.2
dried coffee grounds ....... 2.0.........0.4..........0.7

fish emulsion
..................... 5.0.........2.0..........2.0
fresh cattle manure ........... 0.3.........0.2..........0.4
fresh horse manure .......... 0.4.........0.2..........0.4

greensand
......................... 0.0.........1.5..........5.0
maple leaves ..................... 0.5.........0.1..........0.5
oak leaves ......................... 0.8.........0.4..........0.2

rock
phosphate ................. 0.0.......39.0..........4.5
seaweed ........................... 1.7...........0.8.........5.0

soybean meal
.................... 6.0.........1.2..........1.5

wood
ash ........................... 0.0.........1.5..........7.0


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