Granular pesticides

Pesticide Dispersants. Modified ligaosulfates are used ia the formulatioa of pesticides, la wettable powders, suspeasioa coaceatrates, and water dispersible granules, they act as dispersants and prevent sedimentation. They also act as biaders ia the productioa of granular pesticides. Typical usage levels ia these types of products range from 2—10%. 

Granular applicators are used mainly in agricultural, ornamental turf, forestry, and aquatic pest control. They distribute granular pesticides by several different methods, including ... 

The salt is packaged ia 45-kg multiwaH bags or fiber dmms of 45, 170, or 181 kg. It is available ia both powdered and granular forms with densities of 1.04 and 1.44 g/cm (65 and 90 lb/fT), respectively. Only the powdered grade is authorized by and registered with the EPA for use ia pesticide formulations, with the further proviso that it must be tinted blue or green, or otherwise discolored. The word poison appears on all labels together with first-aid information. 

Clays composed of attapulgite, montmorillonite, and kaoHnite are used for pesticides in finely pulverized or granular form. Granular formulations are reportedly less expensive, more easily handled, reduce loss caused by wind drift, and produce a more effective coverage. 

U.S. Fish and Wildlife Service (USFWS). 1967. Effects of Granular Application of Dursban on Some Estuary and Salt Marsh Organisms. U.S. Fish. Wildl. Serv. Spec. Rep., Pesticide Surveillance Program, Atlanta, Georgia. Mimeo. 34 pp. 

Activated carbon adsorption is a well-established process for adsorption of organics in wastewater, water, and air streams. Granular activated carbon (GAG) packed in a filter bed or of powdered activated carbon (PAG) added to clarifiers or aeration basins is used for wastewater treatment. In the pesticide industry, GAG is much more widely used than PAG. Figure 10 shows the process flow diagram of a GAG system with two columns in series, which is common in the pesticide industry [11]. 

Strychnine was once used liberally as a pesticide, especially to control vertebrates. It is used as a salt in granular bait formulations. In the United States its use has been... 

Suffet coedited with M. J. McGuire ADVANCES IN CHEMISTRY SERIES No. 202, Treatment of Water by Granular Activated Carbon, as well as a two-volume set, Activated Carbon Adsorption of Organics from the Aqueous Phase. He also edited a two-volume treatise, The Fate of Pollutants in the Air and Water Environments he was a journal editor for a special issue of the Journal of Environmental Science and Health, Part A—Environmental Science and Engineering and he served on the editorial board of the companion journal, Journal of Environ-mental Science and Health, Part B—Pesticides, Food Contaminants, and Agricultural Wastes. He serves on the editorial boards of the journals Chemosphere and CHEMTECH. He is now completing a 4-year term as treasurer of the ACS Division of Environmental Chemistry. 

Polyurethane foam (PUF) offers a much lower resistance to air flow than granular sorbents such as XAD-2 and it is inexpensive and easy to use (Lewis, 1989). However, PUF cannot retain SVOCs with high vapor pressure and should be backed up by for example, XAD-2. It has been shown that PUF quantitatively retain a series of household pesticides (Elflein et al., 2003). 

No conduit-controlled flow of water occurred between the backfill site and the well area. Possible flow through a granular medium retarded pesticide contaminants by fixation to the soil. 

Pesticide Formulations for Use with Conservation Tillage (22). Rising fuel costs and the need to prevent soil erosion and to save soil water has spurred interest in conservation tillage techniques. These techniques often require special granular formulations capable of penetrating plant residue and preventing pesticide evaporation and UV attack while the granules remain on the soil surface. 

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