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Some Things to Know About Secondary Nutrients

The secondary nutrients…sulfur (S), magnesium (Mg), and calcium (Ca)…do not always get the recognition of some others, but they are essential and play key roles in the growth and health of plants, animals, and humans. They have been called the “synthesizers” because of their functions in living organisms.Many factors can affect the availability of these three nutrients to plants. The best estimates of their availability can be determined by soil analysis or a combination of soil and plant analyses. However, field observations and deficiency symptoms are also important diagnostic tools.

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 Research focused on S
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Research focused on Mg


Nutrient Source Specifics Series

New this August ...Single Superphosphate (NSS #21) and Ammonium NItrate (NSS#22)

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Magnesium: A Forgotten Element in Crop Production

Magnesium nutrition of plants is frequently overlooked and shortages will adversely impact plant growth. Many essentialplant functions require adequate Mg supplies, the most visible being its role in root formation, chlorophyll, and photosynthesis. Many less visible reactions are also dependent on an adequate supply of Mg. This review briefly summarizes some of the essential roles of Mg for plants.

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Soil and Fertilizer Magnesium

Magnesium (Mg) is an essential plant nutrient that is too frequently overlooked. Althoughweathering of primary and secondary minerals may provide adequate Mg in some soils, thereare some soils that benefit from Mg additions. There are various soluble and slowly soluble Mgsources available to meet crop demands.

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