
Calcium Clarified: Corn
Calcium is an important nutrient for proper corn plant nutrition. Even though it is a secondary nutrient, calcium is critical for optimizing plant strength, ear and kernel development and plays a key role in numerous physiological processes throughout the plant.

More specifically, calcium supports corn plants in the following ways:
Cell Division & Elongation:
Calcium acts as a secondary messenger to regulate the cell cycle and promote proper cell expansion in corn plants. Calcium ions also help to activate enzymes that facilitate cell division and elongation, contributing to the overall growth and development of corn plants.
Cell Wall Development & Strength:
Calcium plays a pivotal role in forming pectin, an integral component of the cell wall matrix. Adequate calcium levels contribute to strong and well-developed cell walls, providing rigidity to the corn plant structure. This strength is especially important during the reproductive stages when the developing kernels require structural support.
Nitrogen Uptake & Metabolism:
Calcium helps to regulate nitrate uptake and metabolism in corn plants. It influences the activity of transport proteins responsible for the uptake of nitrate from the soil. Calcium also modulates enzymes involved in nitrate assimilation within the plant, ensuring proper nitrogen utilization for various physiological processes, including ear kernel development.
Abiotic Stress Reduction:
Calcium helps maintain cell membrane stability and integrity to mitigate abiotic stressors in corn plants. This is vital for preventing cellular damage and ensuring the plant’s resilience to adverse conditions, such as drought or extreme temperatures.
Disease Resistance & Defense Mechanisms:
Calcium contributes to the activation of defense responses, including the synthesis of antimicrobial compounds and reinforcement of cell walls. Ample calcium levels enhance corn plants’ ability to resist infections, adding a layer of protection from common diseases that can impact kernel development.
Soil Structure & Biological Activity:
Calcium is vital for maintaining soil structure health and promoting biological activity in the rhizosphere, the sheath of soil immediately surrounding the corn roots. Calcium also facilitates nutrient availability and microbial activity to foster a healthy environment for plant growth.
Overall, calcium is integral to the overall health and productivity of corn crops. Understanding the multifaceted role calcium plays in corn production is essential for enabling optimal growth and development. With soil-stable, readily available sulfur and calcium, SUL4R-PLUS® calcium-sulfate is an excellent option for helping corn plants meet their calcium and sulfur requirements for optimal crop growth and robust yields.
Get expert insights, company news & trial data.
Here’s a few similar resources we think you may find interesting.

Nourish the Population and the Planet
When you work in agriculture, you see the importance of a stable and thriving local ecosystem first-hand, every day. You depend on the natural cycles of the earth for good yields and healthy crops. You also become aware of the immense threat climate change presents to our way of life.
Read More
Breaking Ground on New Opportunities for SUL4R-PLUS & Marissa, IL
We’re excited to announce that SUL4R-PLUS is coming to Marissa, IL! The new plant location will reside on 34 acres of the former Quad County Ready Mix concrete plant near the Prairie State power plant at 655 Washington County Line Road. Our goal with this expansion is to help meet growing sales needs and increase product availability to better support our growers.
Read More
Don’t Lose Young Crops to Salt Burn
Virtually all fertilizer materials are salts. And while fertilizer can make an enormous, positive difference in the quality of your crops, it can also sometimes cause salt burn.
Read More