Volume 52 Issue 11
Environmental benefits of using clay granules in pesticide applications
, 2000, Vol. 52, No. 11, pp. 25-30
Taylor, D.R.; Goss, R.G.
The history of using clay granules as carriers for pesticides dates back at least 40 to 50 years (Fig. 1). The first important application for a granular formulation was for a mosquito larvacide, where the use of granules insured penetration through the foliage in swampy areas (Loeffler, 1961). Granular soil insecticides using chlorinated hydrocarbons gave way to carbamates and phosphate esters by the 1950s due to concerns about the long-lived persistence of the chlorinated pesticides in the environment. By the early 1960s, most remaining modern-day applications for granular carriers including broadcast herbicides, corn borer control and bait formulations were in at least limited use.
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