This is interesting
Eggs were most susceptible to low temperatures that were higher than 5°C.
Larvae acquired cold tolerance during exposure to 15°C for 1 mo.
These acclimated larvae were the most tolerant of all.
As the most susceptible stage, egg susceptibility to moderately low temperatures (16–20°C) was specifically examined. At 20°C, most eggs (80%) normally hatched within 4 wk, but all eggs died within 6 wk at temperatures less than 18°C.
This fact indicates that the reproductive cycle can be blocked at temperatures less than 18°C, and that tobacco stored in such conditions will never become infested, even if eggs are deposited by invading adults.
Consequently, if the tobacco temperature is reduced to 5°C for 3 mo in winter and is subsequently
maintained below 18°C throughout the rest of the year, tobacco can become and remain pest-free without any chemical control.
18 C ..........64.4 F
http://www.cubancigarwebsite.com/cigar-pests.pdf
Roaster Dude wrote: