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Question
Which of the following does not come under the category of ‘secondary nutrient’ for plant growth?
Which of the following does not come under the category of ‘secondary nutrient’ for plant growth?
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Solution
The correct option is C Oxygen
The secondary nutrients are calcium, magnesium, and sulphur. For most crops, these three are needed in lesser amounts than the primary nutrients. At least 17 elements are known to be essential nutrients for plants. In relatively large amounts, the soil supplies nitrogen, phosphorus, potassium, calcium, magnesium, and sulphur; these are often called the macronutrients.
The secondary nutrients are calcium, magnesium, and sulphur. For most crops, these three are needed in lesser amounts than the primary nutrients. At least 17 elements are known to be essential nutrients for plants. In relatively large amounts, the soil supplies nitrogen, phosphorus, potassium, calcium, magnesium, and sulphur; these are often called the macronutrients.
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