Fruit Rot


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Fruit Rot

 

a disease of fruit trees, caused by parasitic Fungi Imperfecti of the genus Monilla and characterized primarily by the rotting, wrinkling, and desiccation of the fruits. In the USSR it is most widespread among drupe and small-seeded crops. Fruit rot of drupe crops (causative agent Monilia cinerea) is one of the most harmful diseases of apricots, peaches, plums, mazzard cherries, cherries, and cherry plums. Fruit rot of crops with small seeds is less damaging than that of drupe crops. Fruit rot of apple and pear trees is caused by the fungus M. fructigena (some apples in the Far East are parasitized by M. malt); fruit rot of quince is caused by M. cydonia.

The causative agents of fruit rot penetrate the plant primarily when there are mechanical injuries; they develop inside the tissues and winter in the organs of the trees. With the onset of warm, humid weather, the spores are carried to healthy trees by the wind, raindrops, and insects (mainly by fruit moths and snout beetles). Severe affection of fruits is fostered by dense plantings, dense tree crowns, planting orchards in lowlands, and cool, moist weather during blossoming.

Control measures include planting orchards on well-ventilated plots, gathering and packing fruits without mechanical injury, gathering and destroying diseased fruits, pruning and destroying diseased branches in the autumn or spring, turning over the soil around the trunks, and spraying trees with fungicides.

M. V. GORLENKO

References in periodicals archive ?
Weeding should be regularly done to reduce competition of nutrients, lights and space to curb pests and diseases.Once the crop has started fruiting, mulching should be done to prevent the direct contact of the first fruits with the soil, which causes fruit rot.
The summer months were characterized as warm and dry; however, the post-veraison period (late August through October) was characterized as wet and cool, which led to slowed ripening and increased fungal disease pressure (fruit rot).
awamori was reported for the first time as a guava fruit rot pathogen from Pakistan.
The Strawberry Advisory System (SAS) (http://agroclimate.org/tools/sas/) informs producers about the risk for Anthracnose fruit rot and Botritys fruit rot, which significantly affect the production of strawberries in central Florida and worldwide.
It prevents or treats apical rot/bruising, drying of leaves, tip burn and fruit rot. Boron, on the other hand, is also needed by plants, especially in producing high quality fruits with long storage life.
Unchecked use of unhealthy seeds form diseased seedlings, Insect attack (Mango mealy bug, fruit fly, Mango weevil, scales, mites), alternate bearing, Mango malformation(vegetative or reproductive) and diseases (powdery mildew, anthracnose, quick decline, sooty mold, fruit rot and stem blight) are the greatest threat to the industry in major Mango producing countries, including Pakistan.
The fruit rot caused by a fungi Phomopsis vexans, is becoming severe disease in northern dry zone.
The REGALIA MAXX label was developed by FMC in Chile for three important exported crops: table and wine grapes -- powdery mildew (Erysiphe necator) and a complex of plant pathogens that cause and contribute to fruit rot (Botrytis cinerea, Cladosporium herbarium, Penicillium expansum, Rhizopus stolonifer); blueberries -- blossom blight (Botrytis cinerea); and walnuts -- walnut blight (Xanthomonas arboricola pv.
This pathogen has become important because it cause numerous diseases, including seed rot (Gure et al., 2005), stem canker canker, dieback, root rot, fruit rot, leaf spot and witches' broom (Punithalingam, 1980).