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The disease cycle begins with the overwintering structures. The grape black rot pathogen overwinters in many parts of the grape vine, especially mummies and lesions, and is able to overwinter on the vineyard floor. [3] In fact, "Viable lesions capable of producing conidia can persist in wood for at least 2 years."
Noble rot on Riesling grapes (Rheingau, Germany, 2005). Noble rot (French: pourriture noble; German: Edelfäule; Italian: Muffa nobile; Hungarian: Aszúsodás) is the beneficial form of a grey fungus, Botrytis cinerea, affecting wine grapes. [1]
Download QR code; Print/export Download as PDF; Printable version; In other projects ... This is a list of diseases of grapes (Vitis spp.). Bacterial diseases
Fungicide sprays applied in a timely manner are highly effective against the rust diseases during the apple cycle. [12] Most protective fungicide sprays are applied four times at 7- to 10-day intervals, starting with pink bud on crabapples. These applications are to protect the apples from spores being released from the cedar host in mid-spring.
Botrytis cinerea is a necrotrophic fungus that affects many plant species, although its most notable hosts may be wine grapes. In viticulture, it is commonly known as "botrytis bunch rot"; in horticulture, it is usually called "grey mould" or "gray mold". The fungus gives rise to two different kinds of infections on grapes.
The fungus spreads by oospores on diseased leaves and/or on infected seed. The disease spreads in environments with high humidity and favors temperatures between 20-22 °C. Tufts of grayish to pale-colored sporangiophores on the underside of leaves easily distinguish the infection from other foliar diseases. [17]
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Anthracnose tends to develop late in the harvesting season, and is not a common soybean disease. It is caused by the fungus Colletotrichum truncatum. The fungus infects soybean by attaching to the surface of the plant and penetrating the tissue wall. From here anthracnose is able to spread spores throughout the plant, killing branches, pods ...