This paper comprises mineral analysis of
Cestrum diurnum lin leaves infected by powdery mildew
fungus Oidium sp. The dried leaf samples of healthy
and infected leaves were subjected to tri-acid digestion,
according to method prescribed by Toth et al., (1948).
The digested sample were used for analysis of minerals
by atomic absorption spectrophotometer (Thermo
scientific AAS 2003 model). The elements such as
sodium, potassium and calcium were estimated by flame
photometer, while phosphorous by Sekine et al., (1966)
method. The elements such as iron, manganese, calcium,
sodium and phosphorus were considerably enhanced in
the infected leaves while potassium, zinc, copper and
sulphur were reduced in infected leaves, reveals a great
Keywords : Cestrum diurnum L minerals, Oidium sp., AAS Spectrophotometer, Flame photometer.