Is there any method to prevent the leaves of my rose plants from crinkling?Shreya M. NairNagerkoil, Tamil NaduAbout 2ml of dichlorovase and 2gm of copper oxycholride diluted in one litre of water may be sprayed once every three days for fifteen days.Readers are invited to send their queries with full postal address to `Farm Queries,' The Hindu, Kasturi Buildings, 859/860, Anna Salai, Chennai 600002 or email to