Complete the following box with reference to symptoms of mineral deficiency:
Abscission: Pre-mature fall of flowers, fruits and leaves
______: Appearance of green and non-green patches on leaves
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Necrosis (tissue death) causes patchy discoloration; chlorosis is yellowing, while necrosis involves browning/dead spots.
Necrosis refers to the death of leaf tissues, often appearing as green and non-green patches due to mineral deficiencies (e.g., calcium or potassium). Abscission is premature shedding linked to deficiencies like boron.