What is calcium?
Four nutrient elements – N, P, K, Ca...Calcium in crops ? Calcium in soil ?
Structure of Cell
Causes of Calcium Deficiency?
High temperature, low temperature, too humid, dry, excessive N, lack of sunshine
Why do we have to use calcium fertilizer?
Most affected by environments (temperature, humid, etc) - Severely affected by deficiency disorder among 16 elements
More than 70% affected by calcium deficiency symptom due to excessive nitrogen in soil.
Strengthening cell walls to increase resistance to invasive fungous pathogens .(powdery mildew, anthrax, gray...