Citrus > Citrus General Discussion
huanglongbing disease
Kalopa Guy:
The plant hopper (asian citrus psyllid)that spreads it carries the bacterium. Control the plant hopper and control the problem good luck with that, homopterans are impossible to eradicate difficult to control. Luckily modern science has gene editing technology that should be of help. Only problem is that means cutting and chipping susceptible trees and planting genetically modified ones, developing new resistant cvs is going to take decades. I wonder if the Chinese have done any work on this. It's their darn disease.
Kalopa Guy:
Didn't think of that, I guess if you have uninfected plant mtl and keep it screened that would work. There is a millionaire in Kohala Estates who has a giant screened poly house with mangos inside. A few years ago I tried that with my cannabis it kept every thing out except the 2 spotted spider mite. Funny how $ solves many problems. Really sad how modern agriculture is increasingly moving indoors.
Yorgos:
I lost a star ruby grapefruit, moro orange, meyer lemon and a ujukitsu lemon to HLB in 2020. Then the ice storm Uri hit Feb '21 and took out the rest of my trees. I replanted in 2022(of course!) and things are developing. I hope the cold of Winter Storm Uri (Feb '20) followed by Winter Storm Elliot (Dec '22), and the latest Jan '25 cold will set the ACP populations back to give the upper Texas Gulf Coast a breather at least.
a_Vivaldi:
Interesting, do cold weather events have a significant impact on ACP numbers? I had read a study at some point suggesting they could colonize as far north as zone 7 or 6 iirc, but this suggests that they probably can't, or at least not reliably or in great numbers.
FruitGrower:
--- Quote from: Kalopa Guy on March 18, 2025, 01:55:08 AM ---Kinda wondering if any hobbyists on this forum has encountered this in their backyards yet. AKA / Citrus Greening Disease
Wondering if maybe USDA / Fla. St, Dept of Ag is stepping up to save the industry.
Pretty sure death nell there for Fla Citrus. next Ca... headed to Hawaii zero doubt.
Maybe contact congressional reps and demand exemptions to USDA /UDAID cuts to research and plant quarantine.
--- End quote ---
I had HLB wipe all my citrus out the first time I tried growing them in 2016. In 2020, I started growing them again under protective screening and I have no signs of infection on any of my trees (~30). Though the screening does present its own set of problems, it's better than watching them slowly die from hlb.
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