While all options are plant nutrients and can be found in fertilizers, Nitrogen, Phosphorus, and Potassium are the primary macronutrients (needed in large quantities) and form the basis of most common fertilizers. Iron is a micronutrient (needed in smaller quantities).
Which one of the following nutrients is *not* available in fertilizers?
Asked in UPSC CISF AC EXE 2020 · Topic: Plant Nutrition (Essential Mineral Elements: Criteria for essentiality and classification)
More Biology questions
- With reference to 'earthworms', which of the following statements is/are correct? 1. Earthworms improves soil fertility and are known as farmer's friends. 2. Earthworm has two pair of hearts. Select the correct answer from the code given below : Code :
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