1.

Write the role of different nutrients like nitrogen, phosphorus, potassium, magnesium, Iron, manganese and zinc and effects of their deficiency on plants.

Answer»

Role of nutrients and effects of their deficiency on plants:

NutrientsFunctionEffects of deficiency
NitrogenImportant components of proteins, chlorophyll and cytoplasm.Retarded/stunted growth, yellowing of leaves.
PhosphorusConversion of light energy into chemical energy.Early leaf-fail, late flowering, slow growth of roots.
PotassiumNecessary for metabolic activities.Weak stem, wilting of leaves, failure to produce carbohydrates.
MagnesiumProduction of chlorophyllSlow/retarded growth, yellowing of leaves.
IronProduction of chlorophyllYellowing of leaves
ManganeseProduction of main plant hormonesRetarded growth, spotted leaves
ZincProduction of hormones and their intermediatesRetarded growth, yellowing of leaves


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