Peronospora manshurica is an oomycete in the family Peronosporaceae that causes downy mildew, also called leaf spot, on soybeans and other crop plants, and is found wherever soybeans are grown. As a biotrophic pathogen it requires a living host to survive and reproduce, producing pale green to light yellow leaf spots that enlarge into bright yellow lesions before turning brownish with a yellowish-green border. The disease is historically considered low risk and rarely warrants fungicide treatment in the United States, but it consistently reduces seed weight and can cause yield loss in infected soybean crops. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Caused By Agent Kind
Entity-backed identity for the agent-kind enum value this pest or disease already carries, resolved to an agriculture concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The agent-kind fact itself stays on the pest or disease unchanged.
Sources
1. Peronospora manshurica (Wikipedia)
lead descriptionQuote, lead description
Peronospora manshurica is an oomycete in the family Peronosporaceae that causes downy mildew, also called leaf spot, on soybeans and other crop plants, and is found wherever soybeans are grown.
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