The essential elements (also called essential plant nutrients) are those that your plants require in order to grow. The three primary macronutrients are nitrogen, phosphorus and potassium. The three secondary macronutrients are calcium, sulfur and magnesium. Your plants need larger amounts of these nutrients than they need of micronutrients.
Chemical symbol: Mg Magnesium is a secondary essential macronutrient, it helps your plants activate enzymes and metabolize carbohydrates. Symptoms of magnesium deficiency include older leaves suffering from chlorosis and younger leaves failing to thrive.
Chemical symbol: Mn Manganese is a micronutrient that activates enzymes in plants. It also is essential for plants during photosynthesis in order to manufacture chlorophyll. Along with iron, manganese works to create chlorophyll.
Microbial inoculants are products that introduce beneficial bacteria and/or fungi to the root zone (or rhizosphere) of your plants. They assist your plants in building up root mass, which results in greater nutrient uptake.
The essential micronutrients (also called trace minerals or trace elements) are boron, chlorine, manganese, iron, zinc, copper, molybdenum and nickel. Although required in lower quantities than primary and secondary macronutrients, they are just as essential for plant growth.
Chemical symbol: Mo Molybdenum is an essential micronutrient that helps plants utilize available nitrogen. A minimal amount of molybdenum is required in plant tissues for normal growth. Crops high in molybdenum can be toxic to ruminant animals.