How does calcium deficiency manifest in plants?

Calcium deficiency in plants primarily manifests through two notable symptoms: weak stems and blossom end rot. Calcium plays a crucial role in the structural integrity of plant cells, meaning that insufficient calcium can lead to weakened cell walls, which in turn results in stunted and brittle stems. Additionally, blossom end rot affects fruits, particularly tomatoes and peppers, leading to rotten spots at the blossom end of the fruit. This condition arises because calcium is vital for proper cell division and growth at the fruit's tip.

The other symptoms associated with calcium deficiency, such as yellowing leaves, stunted growth, and leaf drop, can be related to various nutrient deficiencies or environmental stresses, but are not as specific to calcium as weak stems and blossom end rot. Therefore, recognizing the distinct manifestations of calcium deficiency is key for effective plant management and intervention.