Peony Common Problems, Pests and Diseases - Gardenia
Description: White mold, caused by the fungus Sclerotinia sclerotiorum, is a common plant disease. It manifests as a white, fluffy fungal growth on plant tissues, often in cool, moist conditions.
Peony Diseases - Penn State Extension
2023年4月3日 · Can cause stem rot on peony. The entire plant may wilt, or only a portion of it. Infected areas of the stem turn a light tan color and may become withered and stringy. Under wet conditions, fluffy white fungal growth (mycelium) often appears. Sclerotinia sclerotiorum: Do not replant in infested areas. Maintain good air circulation.
fungus, Sclerotinia sclerotiorum, can also cause brown leaf spots on foliage that closely resemble Botrytis infections, but without the fuzzy gray growth. Infected stems often appear soggy light brown underneath the fungal growth and hard, black structures a few millimeters in length can develop along infected tissue in later stages of infection.
Sclerotinia disease is most serious in the cool, wet regions of the world. Depending on the crop or weed host, the Sclerotinia fungi can cause a blighting or rotting of any above-or below-ground part of the plant (Figures 1-20). Initially, disease outbreaks are usually patchy and spasmodic.
The fungus lives over winter in the form of small, black, pimple-like resting bodies, called sclerotia, which are formed on dead foliage and stems. When the diseased plant parts decay, the sclerotia pass into the soil and thus serve as a source of infection of the young shoots during their emergence the following spring.
Peony Stem Rots by Neopestalotiopsis clavispora and Sclerotinia ...
2024年6月30日 · The two fungal species, Neopestalotiopsis clavispora and Sclerotinia sclerotiorum, causing peony stem rots, are newly reported in South Korea in our current study, based on cultural, morphological, phylogenetical identification and pathogenicity assay.
Sclerotinia sclerotiorum can cause stem rot on peony as well as on many different herbaceous plants found in the garden. The entire plant or portion of the plant may wilt.
Peony Stem Rots by Neopestalotiopsis clavispora and Sclerotinia ...
The pathogenicity of the two isolates was confirmed in detached peony leaves, according to Koch's postulates. To our knowledge, this is the report of Neopestalotiopsis clavispora and Sclerotinia sclerotiorum as the causal agents of peony stem rots.
There are two fungi that can cause stem rot, typically near the soil line, on peony. These diseases, white mold ( Sclerotinia sclerotiorum ) and southern blight ( Sclerotium rolfsii ) both result in stem wilt and death.
Neopestalotiopsis clavispora and Sclerotinia sclerotiorum as the causal agents of peony stem rots. Antifungal activity of chemical fungicide propineb and rhizobacterium Bacillus siamensis H30-3 was shown against the two plant pathogenic fungi N. clavispora and S. sclerotiorum. Unidentified diffusible and volatile compounds