Which primary plant macronutrient is primarily responsible for vigorous leafy vegetative growth and dark green leaves?
Answer and explanation
Correct answer: D. Nitrogen (N)
- Step 1: Nitrogen is an essential constituent of amino acids, proteins, and chlorophyll. Step 2. Adequate nitrogen promotes rapid vegetative growth, tillering, and healthy green foliage. Answer: Nitrogen (N). Why not the others: Phosphorus stimulates root development and flowering; potassium regulates stomatal opening and disease resistance; calcium strengthens cell walls.
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