To treat brown rot on peach trees, we recommend a spray of Mancozeb Plus in winter to control the issue, then again at full bloom, petal fall and every three weeks until 2 weeks prior to harvest. Collect and destroy any fruit affected with brown rot to stop the spread of infection.

Try 'Yates Mancozeb Plus Garden Fungicide & Miticide'. It is a multi-purpose, dual-active formulation combining the benefits of mancozeb and wettable sulfur. Both actives have a contact fungicidal action, helping to control and prevent the entry and spread of a range of common fungal diseases. 

Click here for more info on this product: https://www.yates.com.au/product/garden-pest-control/yates-mancozeb-plus-garden-fungicide-miticide 

Mix 5g (1 level cap) to 1 litre of water OR 50g (10 level caps) to 10 litres of water. Agitate regularly during spraying to avoid settling.