Richard

Here are the N-P-K percentages of composted guanos

Manure, Guano, etc. N - P - K
(composted) cu. ft. / yr. / tree
Cow 0.2 - 0.1 - 0.2 10.5
Steer 0.7 - 0.3 - 0.4 3.5
Horse 0.7 - 0.3 - 0.6 3.5
Sheep 0.7 - 0.3 - 0.9 3.5
Sea Bird 1 - 10 - 1 0.2
Chicken 1.1 - 0.8 - 0.5 0.8
Shredded Alfalfa 2 - 0 - 3 1.5
Rabbit 2.4 - 1.4 - 0.6 1.75
Desert Bat 8 - 4 - 1 5.8
High-Nitrogen Sea Bird 13 – 12 - 2 0.3


You choose something where the N is high, the P is low, and the K is high.

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