biology plant deficiencies Y9

Magnesium (Mg) Deficiency: Causes yellowing of older leaves (chlorosis) and poor growth, as magnesium is essential for photosynthesis.

Phosphorus (P) Deficiency: Results in stunted growth, dark green leaves with purple veins, and poor root development; phosphorus is important for energy transfer and root growth.

Potassium (K) Deficiency: Leads to yellowing or browning of leaf edges, weak stems, and reduced disease resistance, as potassium is crucial for water regulation and enzyme activation.

Nitrate (N) Deficiency: Causes yellowing of older leaves, stunted growth, and poor yield, since nitrates are vital for protein synthesis and overall plant growth.