|NPK = PLANT FOOD SOURCES
|N = 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.
|P = 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.
|K = POTASSIUM - Sources of potassium include, dead plant material, manure , compost, granite dust, greensand, and seaweed.
|PLANT NUTRIENT REQUIREMENTS -
|Nitrogen - An over abundance of nitrogen can delay flowering while a deficiency can reduce yield.
|Phosphorus - is necessary for almost all
aspects of plant growth and is essential for flower and
|Potassium - is necessary for the formation of
sugars, starches, carbohydrates, protein synthesis and
cell division in roots and other parts of the plant.|
|Sulfur - is a structural component and is required for the production of chlorophyll.|
|Magnesium - is necessary for seed germination and the production of carbohydrates, sugars etc.
|Calcium - is a structural component of cell walls and is necessary for cell growth and division.
|Iron - is essential for the young growing plants and is necessary for many enzyme functions.|
|Manganese - is involved in plant enzyme activity for photosynthesis, respiration, and nitrogen
metabolism. In highly acid soils an over abundance of iron can result in toxicity.
|Boron - is necessary for cell wall formation, membrane integrity and calcium uptake. The
functions affected by boron include flowering, pollen germination, fruiting, cell division, water relationships
and the movement of hormones.|
|Zinc - is essential to carbohydrate
metabolism, protein synthesis and stem growth. Zinc
deficiency may lead to iron deficiency. Lowering soil pH
can result in an over abundance of zinc.
|Copper - is concentrated in roots of
plants and plays a part in nitrogen metabolism. An over
abundance of copper can cause toxicity.
|Molybdenum - is a structural component of
the enzyme that reduces nitrates to ammonia. Without it, the synthesis of proteins is blocked and plant growth ceases.
|Chlorine - is involved in osmosis, the
ionic balance necessary for plants to take up mineral elements and in photosynthesis.|
|Nickel - is an essential trace element for
plants. It is required to break down urea to liberate the
nitrogen into a usable form for plants. Nickel is
required for iron absorption. Seeds need nickel in order to germinate.|
|Sodium - is involved in water movement and ionic balance in plants.
|Cobalt - is required for nitrogen fixation
in legumes and in the root nodules of non-legumes. The demand
for cobalt is much higher for nitrogen fixation than for ammonium nutrition.|
|Silicon - is found as a component of cell
walls. Plants with supplies of soluble silicon produce stronger and tougher cell walls.