Vilken temperatur dodar whiteflies

It takes about 3 hours of 21 degree Fahrenheit to kill 90% of whitefly adults, but would take 57 hours of 21 degree Fahrenheit to kill 90% of whitefly nymphs (even longer for eggs). So, we’re probably not going to kill nymphs with south Georgia temperatures. On the bright side, if you kill the plant, you kill the eggs and nymphs. 1 2 Advertisement It takes about 3 hours of 21 degree Fahrenheit to kill 90% of whitefly adults, but would take 57 hours of 21 degree Fahrenheit to kill 90% of whitefly nymphs (even longer for eggs). How do you get rid of whiteflies? A simple solution made from liquid dish soap and water will kill adult whiteflies without harming plants. 3 4 According to the National Gardening Association, the following simple homemade mixture should be helpful to control and deter whiteflies: Use a mix of dish soap and water. A good squirt of soap to a gallon of water should work. As mentioned above, only spray in cooler temperatures; late in the day is best. 5 1 Answer Sorted by: 6 "Whitefly" is actually many different species of insect which cannot be distinguished visually but do not interbreed with each other. It is quite likely that different species have different temperature tolerances. This study showed about 90% survival of adult whitefly at 4C, and about 60% survival at 0C. 6 Try horticultural oil: Horticultural oils such as neem oil are also effective. This remedy will kill whiteflies at all life stages and discourage black sooty mold. (Read more on how to use neem oil.) Use yellow sticky traps: For indoor or outdoor infestations, yellow sticky traps can detect and control pests. 7 8 En temperatur av 28 ° C, % relativ fuktighet och en 14 timmar fotoperiod kommer att ge en koloni som utvecklas fran agg till vuxen framvaxt. 9 Du kan doda insekter genom att sanka temperaturen i rummet. 10 11