Calcium (Ca)
Magnesium (Mg)
Potassium (K)
Phosphorus (P)
Sulfur (S)
Sulfur is essential for protein synthesis, enzyme function, and nitrogen efficiency. Maintaining proper sulfur levels supports healthy growth and helps maximize yield potential, especially in soils with low organic matter.
Boron (B)
Boron supports cell wall development, nutrient movement, and reproductive growth. Even in small amounts, it plays a critical role in flowering and seed development, making it essential for maximizing yield and crop quality.
Manganese (Mn)
Manganese plays a key role in photosynthesis and enzyme activation. It supports the plant’s ability to process nutrients efficiently and contributes to overall growth, development, and stress tolerance.
Copper (Cu)
Copper supports enzyme activity and plant metabolism while contributing to structural strength and reproductive development. Proper copper levels help maintain plant vigor and support overall crop health.
Zinc (Zn)
Zinc is essential for hormone production, enzyme function, and early root development. It plays a critical role in crop establishment, and deficiencies can limit growth and reduce yield potential.
Our Book Recommendations
At SI Micronutrients, we believe better results start with better understanding. That’s why we’ve curated a collection of foundational resources for growers who want to deepen their knowledge of soil health and fertility. From Introduction to Agriculture by Neal Kinsey to the influential works of William Albrecht—the pioneer behind the percent base saturation model—these readings provide valuable insights into nutrient balance and soil biology.