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Nutrient Values of Common Compost Materials

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Material
% Nitrogen
% Phosphorous
% Potassium
Banana skins
-
3.25
41.76
Cantaloupe rinds
-
9.77
12.21
Castor bean pomace
5.00
2.00
1.00
Cattail reeds
2.00
.81
3.43
Coffee grounds
2.08
.32
.28
Corncobs
-
-
50.00
Corn stalks and leaves
.30
.13
.33
Crabgrass, green
.66
.19
.71
Eggs, rotten
2.25
.40
.15
Feathers
15.30
-
-
Fish Scraps
2.0-7.50
1.5-6.0
-
Grapefruit skins
-
3.58
30.60
Oak leaves
.80
.35
.15
Orange culls
.20
.13
.21
Pine needles
.46
.12
.03
Ragweed
.76
.26
-
Tea grounds
4.15
.62
.40
Wood ashes
-
1.00
4.0-10.00
 

Source - Organic Vegetable Gardening, James M. Stephens, Circular 375, Florida Cooperative Extension Service

Copyright 2003-2007 Betsy S. Franz - All rights reserved