Ammoniacal Nitrogen – A water soluble nitrogen source. While some is taken up directly by the plant, most needs to be converted to the nitrate form by microorganisms in the soil before it gets into the plant. As ammoniacal nitrogen is converted to nitrate, it acidifies the soil – a very useful characteristic in areas with soils of high pH.


Bridge Fertilizer – Fertilizer products that have elements of both organic and synthetic fertilizers.

Cold Water Insoluble Nitrogen (CWIN) – Also known as Water Insoluble Nitrogen (WIN) – Insoluble nitrogen fertilizer fractions associated with urea reaction fertilizers that are insoluble in cold water (72 F). Cold Water Insoluble Nitrogen sources become available by microbial action that converts the nitrogen first to ammonium and then to the nitrate form. CWIN usually releases in 10 to 24 weeks.

Matrixed Technology – Urea polymer embedded nutrients.

Micronutrients – Elements needed by plants to maintain growth. Without them, the plant can’t live. They are needed in small amounts. Examples are Iron, Copper, Zinc, Magnesium, Manganese, etc.

Natural Organic Nitrogen – When used in reference to fertilizers, natural organic generally means that the nutrients contained in the product are derived solely from natural products such as meat and bone meal, blood meal, corn gluten, soybean meal, fish meal, etc.

Urea, Methylenediurea, and Dimethylenetriurea – Synthetic organic fertilizers with different Nitrogen release properties.

Water Soluble Controlled-Release Nitrogen (WSCRN) – Soluble controlled-release nitrogen fertilizer fractions associated with urea reaction fertilizers that are soluble in cold water (72 F). WSCRN usually releases in 3 to 12 weeks.