Nitrogen deficiency
Crop: Onion Nutritional deficiency disorder
SYMPTOMS AND SIGNS
CONTROL
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Older mature leaves turn paler green colour. As the deficiency progresses these older leaves become uniformly yellow (chlorotic). Bulb size becomes small and unmarketable.
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Leaves become yellowish green erect and upright curled, wilted and dwarf. At maturity tissue above bulbs become soft and unmarketable.