Grease spot, St Lucia Minimize

December 2008. A problem on passioinfruit from St Lucia. the plants are growing in a heavy clay soil and there was some waterlogging problems recently.

A member thought the problem was grease spot, caused by a bacterium, Psuedomonas passiflorae. This is one of the most serious diseases of passionfruit in New Zealand. It can be managed by copper sprays.