Question

Deficiency symptoms of sulphur first appear in which part of leaf ?

Answer 1

Due to sulphur deficiency...

Purple or red-brown pigmentation may develop on both young and old leaves. In cultivars with normally green shoot tips, the petiole and margins of young leaves may become red, and this may extend in a mottled pattern over interveinal areas of the upper leaf surface. A similar pattern is seen on the oldest leaves, although it is often confined to the tips of lobes rather than extending around the entire margin. Leaves of intermediate age generally lack purple pigmentation. In plants which normally have purple-pigmented shoot tips, pigment is lost in the normal manner as leaves mature (in contrast with nitrogen deficiency).