Must lead to price increases noticeable by the average person.
Must affect something significantly relied on by consumers (eg wheat), or several less-important crops. Food for livestock counts, but diseases directly infecting livestock don't.
Will be a subjective resolution at the end of the day, so I won't trade in this market.
@brubsby avian flu is also causing egg prices to be high https://www.forbes.com/sites/anthonytellez/2023/01/12/why-are-egg-prices-still-so-high-its-not-the-reason-you-think/?sh=2ae01abb7c6b
@brubsby I wouldn’t count Avian flu since it directly infects animals. Added to description to clarify this.
How bad is citrus greening? Does it just affect citrus plants?
@IC citrus greening does only affect citrus, and it's hard to pinpoint exact studies of the total economic effect of citrus greening in Florida in recent years, but a reference to an estimate written in february reads:
"The Florida citrus industry has been severely impacted by this invasive species. Throughout the 1990s and early 2000s, before the detection of citrus greening, overall citrus production annually topped 200 million boxes. For the 2022-2023 season, USDA projects the state will only produce 20 million boxes of oranges, 1.8 million boxes of grapefruit and 600,000 boxes of specialty fruit, marking the smallest overall crop since 1929-1930."
https://www.dtnpf.com/agriculture/web/ag/crops/article/2023/02/24/wreaking-havoc-four-invasive-species
Also the citrus industry is estimated at a $6.8 billion annual economic impact, so a reduction to 6.4% output seems significant. (from here: https://www.freshfruitportal.com/news/2023/06/14/u-s-house-passes-florida-citrus-relief-for-hurricane-damage/ )