Phytophthora root rot of soybean
Abstract
Phytophthora root rot is one of the most destructive diseases of soybeans. The disease was first observed in northeastern Indiana and northwestern Ohio in the late 1940s, although the cause of the disease was not known at that time. The disease became very destructive in the eary 1950s when the highly susceptible cultivars Harosoy, Hawkeye, and Lindarin occupied over 75% of the soybean acreage in the heaviest production areas of midwestern United States of America. The first noticeable symptoms of the disease, except for a poor stand, often are yellowing and wilting of the leaves. The lateral roots are almost completely destroyed and the main root becomes dark brown. Physiologic specialization was reported by Morgan and Hartwig who isolated Race 2 from the soybean strain D60–9647. Phytophthora root rot is a wet soil disease because the zoospores, the main source of root infection, move in the soil water.
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RS (clay red soil) may be unsuitable for growing fava beans in pots due to its tendency to compact and retain excess water, leading to poor drainage and increased risk of root rot.
“RS (clay red soil) may be unsuitable for growing fava beans in pots due to its tendency to compact and retain excess water, leading to poor drainage and increased risk of root rot (Athow, 2022; Chilakala et al., 2022).”
From Fava bean plant performance and fertility dynamics in Mars regolith simulant-based substrates for space farming (2025) · cites this paper as Athow, 2022
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Caporale, A. G., Paradiso, R., Arouna, N., Amitrano, C., Tagliamonte, S., Chiacchio, M. F., Vitaglione, P., De Pascale, S., & Adamo, P. (2025) · Frontiers in Plant Science · doi:10.3389/fpls.2025.1676285 · Cited by 1 · see citing works
- Authors
- Athow, K. L.
- Corresponding author
- Athow, Kirk L.
- Venue
- World Soybean Research Conference III: Proceedings
- Publisher
- CRC Press
- Published
- 2022-02-16
- Pages
- 575-581
- OpenAlex
- W4213250245
- Cited by
- 5
- References
- 0
- Citations by year
- 2025: 1
- FWCI
- 0.43
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- CRC Press eBooks (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Pathogens and Resistance
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Plant Pathogens and Fungal Diseases
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Fungal Plant Pathogen Control
- Keywords
- Phytophthora root rot, soybean, Phytophthora, root rot, disease history, susceptible cultivars, Harosoy, Hawkeye, root damage, zoospores, race 2
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