Nutrient Deficions in plants
A Quick Guide
Symptoms appear first in the oldest leaves:
Nitrogen : general yellowing; stunting; premature maturity
Magnesium : patchy yellowing; brilliant colours especially around edge
Potassium : schorced margins; spots surrounded by pale zones
Phosphorus : yellowing erect habit; lack lustre look; blue - green, purple colours
Molybdenum : mottling over whole leaf but little pigmentation; cupping of leaves and distortion of stems
Cobalt : legumes only, as for nitrogen
( excess salt marginal scorching, generally no spotting )
taken from food from plants by csiro division of soils
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