PDA

View Full Version : LD50


JeffC
02-04-2001, 11:21 PM
What does LD50 stand for

jrblawncare
02-05-2001, 03:39 AM
Jeff,Pesticide toxicity is rated by determining the amount,or lethal dose,that will kill 50% of the test population of animals this is referred to as the LD50.Hope this helps.John...{page 4 in the KY training manual for ornamental and turf pest control}

UrbanEarth
02-05-2001, 08:49 PM
Actually, LD50 is used to rate ANY substance's ability to be lethal. It is usually in grams per kilogram of body weight of subject, therefore if something has an LD50 of 15mg, consuming 15 mg per kg of body weight will kill 50% of the test population.
I can't remember or find the number but sugar has an LD50 rating as well (it's insanely high, force feeding would be required).

Hope this helps.

Alan

Garry
02-05-2001, 09:11 PM
It is expressed in milligrams of toxin to Kilograms of body weight. Pesticides labled Danger will have a lower LD-50 than those labled Caution. It's involved in all pesticide training, so a good understanding will only benefit you.

G. William Lamar