Note
This paper summarizes the results of study and determine the assimilation capacity of malathion in the Indian River. The malathion was applied by airplane or truck as ultra low volume (ULV) sprays conducted by the Brevard County Mosquito Control District. The application rate for malathion was approximately 213 g/ha and 44.2 g/ha for both aerial and truck spray. The field spray was performed in September and October 1986, in St. Lucie County Impoundment No. 23, located on the west side of North Hutchinson Island.