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Qus: Yellow spots on citrus leaves is due to the deficiency of:
Qusखट्टे पत्तों पर पीले धब्बे किसकी कमी के कारण होते हैं:
A. बोरोन
B. ज़िंक
C. लोहा
D. मैगनीशियम
Solution
D. Magnesium
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