Didn't Florida have a big problem in the 80s/90s with some citrus tree disease?
Yes and there were multiple freezes fairly close together that wiped out the citrus groves in the 1983-85 time frame if I remember right. Florida citrus has had freezes going back over a century that have wiped out the citrus groves. However, the freezes, Global Warming don't you know, all but wiped out citrus in the central and northern Florida. The groves moved south but many farmers were wiped out.
Pre Freeze, one could drove the back roads of Florida and only see lovely small towns and citrus for miles and miles and miles. After the freezes, the groves looked like a battle had been fought in them. Utter destruction. Miles and miles of dead trees. It was horrible to see and really looked like a battlefield from WWI. Once lovely groves looked like death and the farm houses soon followed.
Given the land prices, the need to build houses, and the years it would take to produce fruit again, farmer sold the land. They really had no choice.
The various citrus diseases did not help either. My parents had a few citrus trees and the state cut them down to stop the spread of one of the citrus viruses.
Regarding sugar cane. Florida produces quite a bit of cane sugar and there used to be tariffs in place to protect the large company farms around Lake Okeechobee. At some point, the fields will be down to bed rock, because the muck soil they consist of, degrades when exposed to air. There is, or was, a post in the agricultural area of West Palm Beach that was installed in the 1930's are there abouts. The post was driven to bedrock and left flush with the ground. I saw a photo of the post 30ish years ago, and the top of the post was a good six feet above ground...
Places I grew up in in South East Florida grew truck crops, but those fields have been turned into houses and strips malls. Springs and rivers we used to go swimming, fishing, and canoeing, that were in the middle of no where, and were gorgeous spots surrounded by live oaks forest, pine forest and citrus groves now grow houses, highways, malls, and parking lots...
They paved paradise and put up a parking lot
With a pink hotel, a boutique, and a swinging hot spot
Don't it always seem to go
That you don't know what you got 'til it's gone
They paved paradise and put up a parking lot
I knew what we had but there was no way to save paradise...