Zinc Deficiency
In onion, if plant shows zinc deficiency symptom then foliar application of Zinc sulphate should be done 1st at 35 DAT and 2nd at 50 DAT with a sticker dose of 0.33 ml per litre water.
Plant parts affected
Leaves
Initial diagnosis:
Younger leaves become yellow and pitting develops in the interveinal upper surfaces of the mature leaves.
Symptoms:
Intense interveinal necrosis occurs but the main veins remain green.
Damage type:
Growth restricted. The leaves show interveinal necrosis.
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