0141600 



NOAA National Oceanic and Atmospheric Administration 



NR Not reported 



NRC National Research Council 



NS Not significant 



OM Organic Matter Content 



pH Negative logarithm, base 10, of H + concentration 



PMA Phenyl mercuric acetate 



RNAA Radiochemical neutron activation analysis 



SCS U.S. Soil Conservation Service 



SSMS Spark source mass spectrometry 



USDA United States Department of Agriculture 



USGS United States Geological Survey 



WW Wet weight basis 



Wks Weeks 



XRFL X-ray fluorescence 



YR Yield reduction 



Terms 



acute - Sharp; poignant. Having a short and relatively 



severe course. 



chronic - Persisting over a long period of time. 



phytotoxic - Pertaining to a phytotoxin. Inhibiting the growth 



of plants. 



toxicosis - Any disease condition due to poisoning. 



criterion - A standard by which something may be judged. 



V I I 



