Record Display for the EPA National Library Catalog


Main Title Losses of fertilizers and pesticides from claypan soils /
Author Smith, George E.
Other Authors
Author Title of a Work
Whitaker, Fred D.,
Heinemann, Herman G.,
Publisher Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Superintendent of Documents, U.S. Government Printing Office
Year Published 1974
Report Number EPA-660/2-74-068; EPA-R-801666; EPA-ROAP-21AYP-14
Stock Number PB-239 931
OCLC Number 01141424
Subjects Runoff ; Soil erosion ; Fertilizers ; Pesticides
Additional Subjects Water pollution ; Clay soils ; Fertilizers ; Pesticides ; Farm management ; Surface water runoff ; Inorganic phosphates ; Inorganic nitrates ; Erosion ; Losses ; Sediments ; Experimental data ; Sampling ; Grain crops
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 660-2-74-068 Headquarters Library/Washington,DC 06/11/2012
EJBD  EPA 660-2-74-068 Headquarters Library/Washington,DC 12/29/2014
EKBD  EPA-660/2-74-068 Research Triangle Park Library/RTP, NC 03/29/1996
ELBD  EPA 660-2-74-068 AWBERC Library/Cincinnati,OH 03/22/2017
NTIS  PB-239 931 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, 75 pages : illustrations ; 27 cm.
Analyses of runoff and sediment were made from 33 instrumented plots at the Midwest Claypan Experiment Station. Nitrogen compounds, phosphates and some specific pesticides were determined where fertilizer treatments, cropping and cultural practices varied. The results show the losses of nitrogen and phosphate compounds that may be expected under practical field conditions on soils that have a minimum slope and where percolation rates are slow. Results from three seasons are reported. In all three years rainfall during the critical period, where there was minimum ground cover, was below long time averages. Optimum fertilization treatments that produced a vigorous canopy, or a good residue cover reduced both erosion and nutrient losses. In none of the three years did the optimum use of fertilizer or pesticides produce large losses of chemicals. The results point to systems of soil management that will produce optimum yields of grain crops with a minimum contamination of receiving water by chemicals.
"July 1974." "Project officer, Arthur Burks, Southeast Environmental Research Laboratory." U.S. G.P.O. sales statement incorrect in publication. Includes bibliographical references (pages 62-64). Prepared for Office of Research and Development, U.S. Environmental Protection Agency