Gail Thelin 20051004 Version 2.0, October 06, 2005 digital data Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?pesticide_use92 This dataset includes information for 200 pesticides on the average amount (pounds) applied to 87 agricultural crops and the acres of crops treated for counties within the conterminous United States. These data were derived by combining published state pesticide use coefficients published by the National Center for Food and Agricultural Policy (NCFAP) and county harvested crop acres available from the 1992 Census of Agriculture. A description of the methods used to develop the county database is published in USGS OFR 00-250, "Method for Estimating Pesticide Use" and is available online from: http://pubs.er.usgs.gov/pubs/ofr/ofr00250. Maps showing the geographic distribution of use patterns for 199 compounds (BT was not mapped) area available from http://ca.water.usgs.gov/pnsp/. The pesticide use estimates contained in this file represent average usage patterns for the years 1990-1993 and do not represent a specific year. The key limitations of the data include the following: (1) state use coefficients represent an average for the entire state and consequently do not reflect the local variability of pesticide management practices found within states and counties, (2) pesticide use estimates are not for a specific year, but represent typical use patterns for a four year period, (3) state pesticide use coefficients many not have been available for all states where a pesticide may have been applied to agricultural land, and therefore, are not included, and (4) the county crop acreage use to estimate county pesticide use is from the 1992 Census of Agriculture and may not represent all crop acreage because of Census nondisclosure rules. These data are useful for estimating pesticide use by crop and compound at National, state and regional scales. County estimates for 200 compounds and 87 crops are based on information reported by the National Center for Food and Agricultural Policy (NCFAP). NCFAP has compiled pesticide use information including the percent of crop acres treated and the average pounds of a pesticide applied for each of the 48 states. Information was obtained by NCFAP from USDA reports, surveys of farmers, expert opinions of USDA extension specialists, and others. Use coefficients represent average use rates and are based on information from 1991 to 1993. Use coefficients are available for cropland only and do not include greenhouse, livestock, ornamental plant and post harvest applications nor information on the use of rodenticides or animal repellants. A report detailing the database and state pesticide use coefficients are available online from: http://pestdata.ncsu.edu/ncfap/search.cfm. The USGS Pesticide National Synthesis Project (PNSP) applied NCFAP state pesticide coefficients to 1992 Census of Agriculture county harvest crop acreage to develop a database of county estimates of pesticide use for 200 compounds and 87 crops. The USGS county pesticide use database contains 450,806 records. Each record is a unique combination of a pesticide, crop, and county. Each record includes a FIPS code, state name, pesticide name, pesticide type, crop name, the estimated average annual pounds applied, and the acres treated for each county. A description of the methods used to develop the county database is published in USGS OFR 00-250, "Method for Estimating Pesticide Use" and is available online from: http://pubs.er.usgs.gov/pubs/ofr/ofr00250. The 200 compounds and their type that are contained in the data file are listed below. 1,3-D other pesticide 2,4-D herbicide 2,4-DB herbicide ABAMECTIN insecticide ACEPHATE insecticide ACIFLUORFEN herbicide ALACHLOR herbicide ALDICARB insecticide AMETRYN herbicide AMITRAZ insecticide ANILAZINE fungicide ASULAM herbicide ATRAZINE herbicide AZINPHOS-METHYL insecticide BENEFIN herbicide BENOMYL fungicide BENSULFURON herbicide BENSULIDE herbicide BENTAZON herbicide BIFENTHRIN insecticide BROMACIL herbicide BROMOXYNIL herbicide BT insecticide BUTYLATE herbicide CACODYLIC ACID other pesticide CAPTAN fungicide CARBARYL insecticide CARBOFURAN insecticide CARBOXIN fungicide CHLORAMBEN herbicide CHLORIMURON herbicide CHLOROPICRIN other pesticide CHLOROTHALONIL fungicide CHLORPYRIFOS insecticide CHLORSULFURON herbicide CLETHODIM herbicide CLOFENTEZINE insecticide CLOMAZONE herbicide CLOPYRALID herbicide COPPER fungicide CRYOLITE insecticide CYANAZINE herbicide CYCLOATE herbicide CYFLUTHRIN insecticide CYPERMETHRIN insecticide CYROMAZINE insecticide CYTOKININS other pesticide DCNA fungicide DCPA herbicide DESMEDIPHAM herbicide DIAZINON insecticide DICAMBA herbicide DICHLOBENIL herbicide DICLOFOP herbicide DICOFOL insecticide DICROTOPHOS insecticide DIETHATYL ETHYL herbicide DIFENZOQUAT herbicide DIFLUBENZURON insecticide DIMETHIPIN other pesticide DIMETHOATE insecticide DINOCAP fungicide DIPHENAMID herbicide DIQUAT herbicide DISULFOTON insecticide DIURON herbicide DODINE fungicide DSMA herbicide ENDOSULFAN insecticide ENDOTHALL herbicide EPTC herbicide ESFENVALERATE insecticide ETHALFLURALIN herbicide ETHEPHON other pesticide ETHION insecticide ETHOFUMESATE herbicide ETHOPROP insecticide ETHYL PARATHION insecticide ETRIDIAZOLE fungicide FENAMIPHOS insecticide FENARIMOL fungicide FENBUTATIN OXIDE insecticide FENOXAPROP herbicide FENPROPATHRIN insecticide FENVALERATE insecticide FERBAM fungicide FLUAZIFOP herbicide FLUOMETURON herbicide FOMESAFEN herbicide FONOFOS insecticide FORMETANATE HCL insecticide FOSETYL-AL fungicide GIBBERELLIC ACID other pesticide GLYPHOSATE herbicide HEXAZINONE herbicide IMAZAMETHABENZ herbicide IMAZAQUIN herbicide IMAZETHAPYR herbicide IPRODIONE fungicide ISOPROPALIN herbicide LACTOFEN herbicide LAMBDACYHALOTHRIN insecticide LINDANE insecticide LINURON herbicide MALATHION insecticide MALEIC HYDRAZIDE other pesticide MANCOZEB fungicide MANEB fungicide MCPA herbicide MCPB herbicide MCPP herbicide MEPIQUAT CHLORIDE other pesticide METALAXYL fungicide METALDEHYDE insecticide METAM SODIUM other pesticide METHAMIDOPHOS insecticide METHAZOLE herbicide METHIDATHION insecticide METHOMYL insecticide METHOXYCHLOR insecticide METHYL BROMIDE other pesticide METHYL PARATHION insecticide METIRAM fungicide METOLACHLOR herbicide METRIBUZIN herbicide METSULFURON herbicide MEVINPHOS insecticide MOLINATE herbicide MSMA herbicide MYCLOBUTANIL fungicide NAA other pesticide NAD other pesticide NALED insecticide NAPROPAMIDE herbicide NAPTALAM herbicide NICOSULFURON herbicide NORFLURAZON herbicide OIL insecticide ORYZALIN herbicide OXAMYL insecticide OXYDEMETON-METHYL insecticide OXYFLUORFEN herbicide OXYTETRACYCLINE fungicide OXYTHIOQUINOX insecticide PARAQUAT herbicide PCNB fungicide PEBULATE herbicide PENDIMETHALIN herbicide PERMETHRIN insecticide PHENMEDIPHAM herbicide PHORATE insecticide PHOSMET insecticide PICLORAM herbicide PRIMISULFURON herbicide PROFENOFOS insecticide PROMETRYN herbicide PRONAMIDE herbicide PROPACHLOR herbicide PROPANIL herbicide PROPARGITE insecticide PROPICONAZOLE fungicide PYRAZON herbicide PYRIDATE herbicide QUINCLORAC herbicide QUIZALOFOP herbicide SETHOXYDIM herbicide SIDURON herbicide SIMAZINE herbicide SODIUM CHLORATE other pesticide STREPTOMYCIN fungicide SULFUR fungicide SULFURIC ACID other pesticide SULPROFOS insecticide TEBUTHIURON herbicide TEFLUTHRIN insecticide TERBACIL herbicide TERBUFOS insecticide THIABENDAZOLE fungicide THIDIAZURON other pesticide THIFENSULFURON herbicide THIOBENCARB herbicide THIODICARB insecticide THIOPHANATE METHYL fungicide THIRAM fungicide TRALOMETHRIN insecticide TRIADIMEFON fungicide TRIALLATE herbicide TRIASULFURON herbicide TRIBENURON herbicide TRIBUFOS other pesticide TRICHLORFON insecticide TRICLOPYR herbicide TRIDIPHANE herbicide TRIFLURALIN herbicide TRIFORINE fungicide TRIMETHACARB insecticide TRIPHENYLTIN HYD fungicide VERNOLATE herbicide VINCLOZOLIN fungicide ZIRAM fungicide Census of Agriculture crop acreage for 1992 was used for the crops listed below. Note, please consult OFR 000-250 for a description of crops that are comprised of multiple crop acreages, for example blueberries is comprised of both tame and wild blueberries. ALFALFA ALMONDS APPLES APRICOTS ARTICHOKES ASPARAGUS AVOCADOS BARLEY BEETS BLACKBERRIES BLUEBERRIES BROCCOLI BRUSSEL SPROUTS CABBAGE CANOLA CANTALOUPES CARROTS CAULIFLOWER CELERY CHERRIES TOT CITRUS COLLARDS CORN COTTON CRANBERRIES CUCUMBERS DATES DRY BEANS DRY PEAS EGGPLANT FALLOWLAND FIGS FLAX GARLIC GRAPES GREEN BEANS GREEN ONIONS GREEN PEAS HAZELNUTS HOPS HOT PEPPERS KIWI LETTUCE MELONS MILLET MINT NECTARINES OATS OKRA OLIVES ONIONS OTHER HAY PARSLEY PASTURE PEACHES PEANUTS PEARS PECANS PISTACHIOS PLUMS/PRUNES POMEGRANATES POTATOES PUMPKINS RADISHES RASPBERRIES RICE RYE SAFFLOWER SEED CROPS SOD SORGHUM SOYBEANS SPINACH SQUASH STRAWBERRIES SUGARCANE SUGARBEETS SUNFLOWERS SWEET CORN SWEET PEPPERS SWEET POTAOTES TOBACCO TOMATOES WALNUTS WATERMELONS WHEAT WILD RICE Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 1991 1993 Use coefficients are derived from information collected from 1991 to 1993 and Census of Agriculture data were collected for the 1992 calendar year. Complete None Planned -127.977 -65.118 48.283 23.0933 none inlandWaters agricultural pesticide use herbicide insecticide fungicide fumigants agriculture Census of Agriculture harvested crop acres National Water Quality Assessment Program NAWQA none Conterminous United States none These data are appropriate for making National, statewide or regional assessments of pesticide use. County estimates are only available for counties with reported crop acreage from the Census of Agriculture and may be effected by Census non-disclosure rules. In some instances, pesticide use coefficients for a neighboring state may have been used. Gail Thelin NAWQA Pesticide National Synthesis, U.S. Geological Survey GIS specialist mailing

6000 J St. Suite 3000

Sacramento CA 95819 916-278-3095 gpthelin@usgs.gov State use coefficients were developed by Leonard Gianessi and Earl Anderson National Center for Food and Agricultural Policty (NCFAP). Gail Thelin, USGS Pesticide National Synthesis Project, produced the county database of pesticide use. Naomi Nakagaki performed data checks to insure the accuracy of the data. Microsoft Windows XP Professional Version 2002 Service Pack 1, Arc 9.1, ACCESS 2002 Leonard Gianessi and Earl Anderson 20020101 ACCESS database Washington, D.C. NCFAP http://pestdata.ncsu.edu/ncfap/search.cfm Thelin, Gail P.; Gianessi, Leonard P 2000 Open-File Report 2000-250 Reston, VA U.S. Geological Survey http://pubs.er.usgs.gov/pubs/ofr/ofr00250 Cross-checked state use coefficients obtained from the CD-ROM with use coefficients published online (http://pestdata.ncsu.edu/ncfap/search.cfm) Compared Census crop acres in the county data file with hard copy published numbers and with data available from the Census of Agriculture database. Summed county data for each compound up to the state level and compared with state totals provided by NCFAP. Some minor differences exist but were linked to the source of crop acreage--NCFAP used USDA NASS state totals and USGS used Census of Agriculture county acreage. Differences were reported and verified by NCFAP. The occurence of pesticide use for a crop and the use coefficients were cross checked with data available online (http://pestdata.ncsu.edu/ncfap/search.cfm). see decription of limitations of data National Center for Food and Agricultural Policy 20020101 ACCESS database Washington, D.C. National Center for Food and Agricultural Policy digital files 19920101 as of date of publication NCFAP National Pesticide Use Database State use coefficients for compounds and crops were used to derive county pesticide estimates. U.S. Department of Agriculture 19990601 ACCESS database Washington, D.C. USDA - NASS digital files 19920101 as of date of publication 1992 Census of Agriculture county harvested crop acreage was used to calculate county pesticide use Processing steps are detailed in OFR-2000-250 and are summarized here. State pesticide use coefficients were obtained as an ACCESS database on a PC-compatiable CD-ROM from NCFAP. The ACCESS database was exported as a text file and imported into ARC/INFO using the IMPORT command. The resulting INFO file contained 15,763 records. Each record included the state name, pesticide name, pesticide type, crop name, state acres, percent of acres treated, application rate, pounds applied, acres treated and the source of the use coefficient. County crop acreage was retrieved from the 1992 Census of Agriculture for all crops contained in NCFAP state database. Some use coefficients were applied to several types of the same crop, for example pesticide treatments on blueberries included both tame and wild blueberries, therefore blueberry acreage in the county file includes both tame and wild blueberries and pesticide treatments on blueberries include both types of blueberries. Please see OFR 2000-250 for a complete description of the crops that were combined. An ARC/INFO aml was written to apply a use coefficient for each crop and compound to county crop acreage. The county file of pesticide use contains 1,158,618 records and includes one record per pesticide and crop combination for each county and state within the conterminous U.S. 20051004 Metadata created by gpthelin@usgs.gov using FGDCMETA.AML ver. 1.3 06/22/98 20051004 Albers Conical Equal Area 29.5 45.5 -96.00 23.00 0.00000 0.00000 coordinate pair 30.00 30.00 Meters North American Datum of 1983 Geodetic Reference System 80 6378137.00 298.257 The county pesticide use data file contains the following data items: PEST92_CNTY.DAT >COLUMN ITEM NAME WIDTH OUTPUT TYP N.DEC > 1 FIPS 5 5 I - > 6 STATE 23 23 C - >29 CMPND 18 18 C - >47 TYPE 18 18 C - >65 CROP 25 25 C - >90 AC92 12 12 I - >102 LBSAI_APPLD 4 16 F 2 >106 AC_TRTD 4 16 F 2 PEST92_CNTY.DAT U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ARC/INFO format, this metadata file may include some ARC/INFO-specific terminology. Export coverage Win zip 7.24 MB http://water.usgs.gov/GIS/dsdl/PESTICIDE_USE92.DAT.e00.zip Export coverage gzip 8 MB http://water.usgs.gov/GIS/dsdl/PESTICIDE_USE92.DAT.e00.gz None. This dataset is provided by USGS as a public service. 20051026 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998