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Q. |
The element absorbed both in cation and anion form is – |
A. | Sulphur |
B. | Nitrogen |
C. | Calcium |
D. | Phosphorus |
Answer» B. Nitrogen | |
Explanation: Nitrogen, required in large quantities for healthy plant growth, is supplied either as a cation (ammonium) or an anion (nitrate). The ratio of these two forms of nitrogen in the nutrient solution can have large effects on both the rate and direction of pH changes with time. |
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