Assertion: fertilizer's blend | /r/HasProperty | 5% magnesium
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Source sentences:
text: It has a balanced blend of NPK ratio of 18-18-21 macro-nutrients and essential micronutrients: 5% magnesium, 0.05% copper, 0.10% iron, 0.05% manganese, and 0.05% zinc, which provides the perfect amount of nourishment to help your plants grow and flourish.