Alum (Patika) for Lemon Plants

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Alum (Patika in telugu) is good for lemon plants.

https://www.vedantu.com/chemistry/alum

Alum is an inorganic compound composed of Water molecules, Aluminum, other Metal than Aluminium, and Sulphates. Alum is a double salt in the hydrated form. Alum exists in different forms: Potash Alum, Soda Alum, ammonium Alum, and chrome Alum. The general chemical formula for Alum is XAl(SO4)2·12H2O.

Aluminium Sulphate  Alum