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PLANT
FOOD SOURCES
NITROGEN
For soils that are nitrogen deficient, treat, manure,
weeds, grass clippings, and other garden wastes with CBPA
and add the resulting compost to the soil. This will
result in a simultaneous improvement in humus and
nitrogen content.
PHOSPHORUS
A natural phosphate rock product can be the best source
of phosphorus. Phosphate rock is most effective when
applied in combination with manure (3 to 5 lbs. of manure
per pound of phosphate). Treat the manure with CBPA and
work into the soil. Wait 20 to 30 days and work the
phosphate rock into the top layer of soil.
POTASSIUM
Sources of potassium include, dead plant material, manure
, compost, granite dust, greensand, and seaweed.
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