I believe I had read at one time that its anything over 1 inch. LUCKILY, ALB doesn't spread as fast as the emerald ash borer for which that darn thing has showed up in Wisconsin now. Its not a easy thing for any of us, no matter where you live. With the mass transit just about every place, I always fear of waking up every day to find out they found it at XYZ.
The ALB was found in Chicago several years ago and for all I know they believe that it has been fully eradicated there. Thats not to say that it isn't in another location just waitint to be found.
I am investing $20,000 + this year, so I know what your talking about. Its not a good feeling, yet I think I am safe for at least 10 years.
Mark
Where we made syrup long before the trendies made it popular, now its just another commodity.
John Deere 4000, 830, and 420 crawler
1400 taps, 600 gph CDL RO, 4x12 wood-fired Leader, forced air and preheater. 400 gallon Sap-O-Matic vacuum gathering tank, PTO powered. 2500 gallon X truck tank, 17 bulk tanks.
No cage tanks allowed on this farm!