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Cadophora gregata (brown stem rot of soybean )
Cadophora gregata
brown stem rot of soybean
Phialophora gregata, Cephalosporium gregatum
Africa: Egypt; Asia: Japan; Europe: Croatia, Serbia; North America: Canada, Puerto Rico, USA; South America: Argentina, Brazil.
FL, IL, IN, IA, KY, MN, MO, NY, NC, OH, SD, VA, WI.
2025-02-08
fungus
China, Korea
Main: soybean, adzuki bean, mung bean
PHIAGR
Transmission of Cadophora gregata is primarily through plant debris and infected soil.
2 Known Hosts
Glycine max
soybean
uncertain
PHIAGR-3, PHIAGR-5, NSHS USDA
The first two references found this pathogen on or in seed, but there was little or no evidence of seed transmission. Additionally, research was done with seed produced under conditions favorable to disease development or with inoculated seed. No toothed references found indicating seed transmission.
Yes
Culture plating
Culture plating is the NSHS standard method.
NSHS USDA
Chemical, cultural
Soil amendments with Trichoderma were compared with benomyl seed treatments, however, no references found on direct seed treatments. It was found that a conventional tillage system significantly decreased the inoculum density of the pathogen. Use of resistant varieties.
PHIAGR-2, EPPO, PHIAGR-7, PHIAGR-8
2025-02-08 15:38:48
PHIAGR-3
Ellis MA, Paschal EH, Powell PE, Tenne FD, 1979. Internally seedborne fungi of soya bean in Puerto Rico and their effect on seed germination and field emergence. Tropical Agriculture, 56:171-174
PHIAGR-5
Abo-El-Dahab, M. 1968. Occurrence of the brown stem rot disease of Soybean in Egypt (U.A.R.). Phytopathologia Mediterranea, 7:28-33.
NSHS USDA
United Stated Department of Agriculture, Animal and Plant Health Protection Service National Seed Health System (USDA-APHIS NSHS) www.seedhealth.org
PHIAGR-2
Yehia AH, Abd-El-Kader DA, Salem DE, Sayed-Ahmed AA, 1994. Biological soil treatment with Trichoderma harzianum to control brown stem rot of soybean in Egypt. Egyptian Journal of Phytopathology, 22:143-157
EPPO
OEPP/EPPO Global Database - European and Mediterranean Plant Protection Organization
PHIAGR-7
Gray LE, 1989 . Brown stem rot. In: Sinclair JB, Backman PA, eds. Compendium of Soybean Diseases. St Paul, Minnesota, USA: American Phytopathological Society, pp. 29-30.
PHIAGR-8
Adee, E.A.; Grau, C.R. (1992) Influence of tillage method on inoculum density of Phialophora gregata in overwintering soybean residue.
Vigna spp.
mung bean, cowpea
No
No references found indicating seed is a pathway.
2025-02-08 15:40:21
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