Agriculture · Nutrient Deficiency Diseases in Plants
आलू का 'ब्लैक हट रोग' (Blackheart) किस तत्व की कमी से होता है?
- 1कैल्शियम
- 2बोरॉन
- 3ऑक्सीजन (O2)✓
- 4पोटैशियम
सही उत्तर देखें
ऑक्सीजन (O2)
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