Question

Reclamation and little leaf disease is caused by deficiency of

• A. Zn and Mo
• B. Cu and Zn
• C. Cu and B
• D. Mn and Cu

Answer 1

The correct option is B Cu and Zn

Deficiency symptoms of zinc causes little leaf disease, leaf rosette, mottled leaf, interveinal chlorosis and necrosis.
Zinc is a mobile, micro mineral essential element. It is an activator for carboxylase. It is needed for the synthesis of auxins. It is absorbed in the form of $Z{n}^{2+}$
Deficiency disease of copper is die back disease of shoots in Citrus, necrosis of young leaf tips, exanthema, reclamation diseaase of cereals and legumes, blackening potato tubers.