![]() ![]() There is a minimum of a one day pre-harvest interval for these fungicides (that is, the time between spraying and harvesting). Always apply all pesticides according to directions on the label. See Table 1 for examples of brands and specific fungicide products. These fungicides are only effective if complete and thorough coverage of the tree(s) can be obtained. Select a fungicide containing captan or propiconazole that is labeled for use on peaches. Starting a spray program when rotten fruit is already evident will result in poor disease control. It is important to begin spraying in 7-day intervals (typically, three times until harvest) when the fruit turns color from green to yellow and red. Fungicides are also required when the fruit ripens. Spray during full bloom and two subsequent sprays at 10 to 14-day intervals to prevent infections of flowers and young fruit. ![]() During pruning in winter, remove all cankerous parts of the tree. In the fall, remove all dried fruit mummies from the tree since this is where the fungus survives the winter. Collect and dispose of any diseased fruit on the ground. Prevention & Treatment: Collect and remove diseased fruit from the tree as it appears. The fungus survives the winter on fruit mummies (on the tree and on the ground) and twig cankers. Infected fruit turns into a mummy on the tree. Some infections only show when fruit begins to ripen.įruit rot starts with a small, round brown spot, which expands to eventually rot the entire fruit. Once infected, fruit remains attached to the tree and provides an additional source of spores for more infections instead of dropping off in a normal fashion. Spores from infected flowers and cankers infect healthy green fruit during long wet periods. Shoot infections (usually from flower infections) result in small (1 to 3 inches) gummy cankers, which provide the source of infection for fruit rot. Infected flowers wilt and turn brown very quickly. It is caused by the fungus Monilinia fructicola, and can also infect flower blossoms and shoots. Clemson University – USDA Cooperative Extension Slide Seriesīrown rot is one of the most common and serious diseases affecting peach fruits. ![]()
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