Name any three minerals whose deficiency causes diseases in plants. Give the symptoms of each deficiency.

The nutrient elements i.e. minerals are essential for the plants to grow well and complete their life-cycle properly. 

The minerals are divided into two main categories: 

(i) Macro-Nutrients: They are required in larger concentrations and they are obtained from soil. 

The three macro-nutrients (minerals) whose deficiency causes diseases in plants are: 

1. Nitrogen (N) – Yellowing of leaves,wrinkling of cereal grains. 

2. Phosphorus (P) – Purple and red spots on leaves, delay in seed germination. 

3. Potassium (K) – Poor Growth 

(ii) Micro Nutrients: They are required in small amounts and they are also obtained from soil. 

The three micro-nutrients(minerals) whose deficiency causes diseases in plants are: 

1. Iron (Fe) – Yellowing of Leaves. 

2. Manganese (Mn) – Yellowing of leaves, with grey spots. 

3. Zinc (Zn) Desphaped leaves, yellowing of leaves, stunted plant growth.