Nutrient deficiency hints
Rough leaf symptom patterns.
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How to use
Deficiencies
Confirm with tests.
Educational use only. Biology models are simplified; clinical and field decisions need appropriate expertise and measurement.
Rough leaf symptom patterns.
Confirm with tests.
Educational use only. Biology models are simplified; clinical and field decisions need appropriate expertise and measurement.
Model / formula
Leaf symptoms (rough guide)
Hints
N: older leaves pale/yellow; P: dark/purple tint; K: marginal burn. Mg: interveinal chlorosis older leaves; Fe: interveinal on young leaves. Confirm with soil/test — many stresses look alike.