Micro- and secondary macronutrients

Using Boron in a fertilizer program can produce substantial production increases of a very limited number of crops, resulting in improved net profit to the grower. In this boron guide, we cover:

• Boron’s role in plants

• Boron deficiency

• Deficiency symptoms in alfalfa, corn, soybean, sugarbeet and cauliflower

• Crops that respond to boron

• Soil testing and recommendation for boron in Minnesota

• Boron field studies in Minnesota

• Boron fertilizer and application

• Boron toxicity and tolerance

Sulfur plays a major role in the formation of the proteins needed to sustain life in all biological organisms. Read our sulfur guide for:

• Sulfur sources in plants

• Removal from the soil system

• Deficiency symptoms in crops

• Sulfur fertilizers

• Application recommendations and methods

Read our guide to copper for agricultural crop production. This guide includes:

• Copper deficiency symptoms and diagnosis

• Crop response to copper in Minnesota

• Fertilizer Management

• Copper toxicity

Magnesium is the central core of the chlorophyll molecule in plant tissue and helps activate enzyme systems. Read our guide to magnesium for crop production, which includes:

• The role of magnesium in the soil

• The relationship between magnesium and calcium in the soil

• Deficiency symptoms

• Predicting the need for magnesium

• Sources of magnesium

Manganese in Minnesota soils

• Manganese (Mn) is required for photosynthesis, nitrogen metabolism, lignin synthesis, root growth, and activation of many enzymatic systems.
• Deficiency of Mn in crops can lead to significant yield loss if not corrected properly.
• Most Minnesota soils supply an adequate amount of Mn for crop production.

Zinc is a recommended micronutrient in fertilizer programs for production of corn, sweet corn, and edible beans. Read this guide to zinc for crop production to find:

• Natural sources of zinc

• The role of zinc in the plant

• Zinc deficiency symptoms

• Crops that respond to zinc

• Tissue and soil tests for zinc deficiency

• Zinc research in Minnesota

• Zinc fertilizer and application

• Zinc toxicity