MODEL FOR RAPID FIELD EVALUATION OF THE TOXICITY OF PESTICIDES TO HONEYBEE COLONIES

publication date: Apr 19, 2013
Send a summary of this page to someone via email.
Journal of Apicultural Research
Vol. 21 (1) pp.57-61
DOI
          ___
Date
March 1982
Article Title
MODEL FOR RAPID FIELD EVALUATION OF THE TOXICITY OF PESTICIDES TO HONEYBEE COLONIES
Author(s)
J. BACILEK
Abstract
Honeybee colonies were exposed to sprays of pirimicarb, ethiofencarb and fenitrothion under model field conditions. The hives were placed in an area without food sources, and then attracted to a feeder with sucrose solution up to 20 m from hives. The hives, flying bees and feeder, were sprayed with the test product as soon as the bees started flying to the feeder. At 18°C, pirimicarb, ethiofencarb and fenitrothion (each 25 g a.i. in 10 litres of water) killed 8'6, 6'5 and 41'1%, respectively, of the bees in the colonies. At 22-23°, ethiofencarb at 50 g a.i. in 10 litres of water was more toxic than pirimicarb at the same dosage. The effect of pesticides was evaluated by counting the dead bees in the hives and in the test area, and live colony populations were subjectively evaluated.
Keywords

 

Full text
pdf
Free to Subscribers Download button     Buy Now Download Button