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Only macronutrients were added in which ...

Only macronutrients were added in which nutrient solution?

A

Amon's

B

Knop's

C

Hoagland's

D

All of these

Text Solution

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The correct Answer is:
To answer the question "Only macronutrients were added in which nutrient solution?", we can follow these steps: ### Step-by-Step Solution: 1. **Understand Macronutrients**: Begin by identifying what macronutrients are. Macronutrients are essential elements required by plants in larger quantities. There are nine macronutrients: Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), Phosphorus (P), Potassium (K), Calcium (Ca), Magnesium (Mg), and Sulfur (S). 2. **Identify Nutrient Solutions**: Recognize that there are various nutrient solutions used in plant nutrition studies. Notable examples include the solutions developed by researchers like Knop, Hoagland, and Arnon. 3. **Review Solutions**: - **Knop's Solution**: This solution contains macronutrients such as Calcium Nitrate and Potassium Nitrate, which are rich in macronutrients. - **Hoagland's Solution**: This solution is also known for containing a variety of macronutrients necessary for plant growth. - **Ammons Solution**: Similar to Hoagland's, this solution is designed to provide essential macronutrients. 4. **Conclusion**: Since all three solutions (Knop, Hoagland, and Ammons) are formulated to include only macronutrients, the answer to the question is that these solutions contain macronutrients. 5. **Final Answer**: Therefore, the correct response to the question is that the nutrient solutions developed by Knop, Hoagland, and Ammons all contain only macronutrients.
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