2021 · Q27
Fertilizers are used to obtain higher yields of crops. However, all nutrients are usually not available in fertilizers. Which one of the following nutrients is usually not available in fertilizers?
General KnowledgeIndian Economy
- AIron
- BPotassium
- CNitrogen
- DPhosphorus
Explanation
Standard fertilisers supply the primary macronutrients nitrogen, phosphorus and potassium (the NPK trio) needed in large amounts for crop yield. Iron is a micronutrient required by plants only in minuscule traces and is not ordinarily supplied through fertilisers. Hence iron is the nutrient usually not available in fertilisers.