Element               Symbol               Element               Symbol

Nitrogen- - - - - - - - -N                       Iron- - - - - - - - - - - Fe

Phosphorus- - - - - - -P2O2                   Manganese- - - - - - -Mn 

Potassium- - - - - - - -K2O                     Molybdenum- - - - - Mo

Calcium- - - - - - - - -Ca                        Zinc- - - - - - - - - - Zn

Magnesium- - - - - - - Mg                       Carbon- - - - - - - - -C

Sulfur- - - - - - - - - - S                          Hydrogen- - - - - - - H

Boron- - - - - - - - - - B                        Oxygen- - - - - - - - - O

Copper- - - - - - - - - Cu                      

Nitrogen: Promotes dark, green color and rapid growth; Improves yield and quality of leaf crops; enhances protein content of food crops; aids in stress tolerance.

Phosphorus: Stimulates early root growth; promotes early plant vigor; hastens plant maturity; influences blooming seed formation; imparts winter-hardiness in grasses and perennials.

Potassium: Impacts vigor and encourages rooting; aids in protein formation and fruit quality and stem or stalk stiffness; essential in formation and translocation of plant starches, sugars and oils.

Magnesium: Essential part of chlorophyll; necessary for plant sugar formation; acts as phosphorus carrier in plant and helps regulate uptake of other nutrients.

Sulfur: Essential protein ingredient; stimulates seed formation and plant growth vigor; helps maintain dark green color; aids in use of nitrogen.

Boron: Improves yield and quality of fruits, vegetables; important for seed production; assists in calcium and phosphorus use and, likely, sugar transfer in plant

Copper: Enzyme activator; may be needed in muck or high organic soils

Iron: Associated with chlorophyll production; availability adversely influenced by overlimited, alkaline, wet or cold soils. Grass blades, for instance, tend to lose color and become almost white when iron is lacking.

Manganese: Influences germination, plant maturity; aids in photosynthesis, carbohydrate transformation; needed for carbon dioxide absorption.

Molybdenum: Likely needed as enzyme activator for nitrate regulation; essential in nitrogen fixation process.

Zinc: Necessary for chlorophyll production and plant growth; functions in plant reproduction.

Carbon: Combines with hydrogen to form simple sugars, the first building blocks of all organic material (the means of storage of sun energy for later use by plants and animals).

Hydrogen: Combines with carbon and oxygen to form simple sugars.

Oxygen: Combines with carbon and hydrogen to form simple sugars in the photosynthesis process.

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