<p>Sulphur deficiency shows a yellowing between the veins and around the margins of the youngest leaves and can increase a plant susceptibility to a range of diseases like powdery mildew and blackspot on roses.</p>
Sulphur deficiency shows a yellowing between the veins and around the margins of the youngest leaves and can increase a plant susceptibility to a range of diseases like powdery mildew and blackspot on roses.
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