Array · collection · 1994

Estimates of herbicide use for the forty-first through the sixtieth most-used herbicides in the conterminous United States

Listed in NASA Earthdata CMR

The herbicide-use estimates in this coverage are intended for use as a means for estimating regional herbicide use, and for producing maps showing relative rates of herbicide use across broad regions of the United States.

Description

This coverage contains estimates of herbicide use for the forty-first through the sixtieth most-used herbicides in the conterminous United States as reported in Gianessi and Puffer (1991). Herbicide-use estimates in this coverage are reported for each county polygon as acres treated, pounds of active ingredient used, and pounds used per square mile.

The herbicide-use estimates provided by Gianessi and Puffer (1991) list acres treated and pounds of active ingredient applied for a given crop in each county for which use has been estimated. Cropping data are from the 1987 Census of Agriculture, and are subject to occasional suppressions of acreage estimates at the county level due to problems of confidentiality and census disclosure rules. The herbicide-use estimates included in this coverage are totals of use on all crops treated in a given county.

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The polygons representing county boundaries in the conterminous United States, as well as lakes, estuaries, and other nonland-area features were derived from the Digital Line Graph (DLG) files representing the 1:2,000,000-scale map in the National Atlas of the United States (1970). [Summary provided by USGS]

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Stated by source: Herbicides · Not provided

Provenance · 1 source records, 10 field assertions

Source	Key	Last seen	Raw
NASA Earthdata CMR	C2231549121-CEOS_EXTRA	13 d ago	JSON v1

Field	Assertion	Extractor	Evidence
access_level	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/agriculture/agricultural-chemicals/pesticides/herbicides	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[platform].gcmd_platform:not-provided	source · NASA CMR	connector:nasa_cmr@1.0.0
description	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/Abstract
license_text	source · NASA CMR	connector:nasa_cmr@1.0.0
publication_date	source · NASA CMR	connector:nasa_cmr@1.0.0
spatial	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/SpatialExtent
temporal	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/TemporalExtents
title	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/EntryTitle
version_label	source · NASA CMR	connector:nasa_cmr@1.0.0

Open at cmr.earthdata.nasa.gov ↗

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License: HERBICIDE-USE DATA Estimates of herbicide use by county were generated by Gianessi and Puffer (1991) by using the following procedure: (1) collect statistics by State, by crop, on percentage of acres treated with a given herbicide, and average annual application rate of the herbicide from surveys sent to Extension Service weed scientists in 1987 and 1989; (2) augment survey data with published information from some States; (3) establish herbicide-use profiles, by State, by crop, containing the percentage of acres treated, and average annual application rates; (4) apply data in herbicide-use profiles to county-level crop-acreage estimates from the 1987 Census of Agriculture (U.S. Department of Commerce, 1989a); and (5) tabulate pounds of active ingredient of herbicides used by crop, by county. Eighty-four crops were profiled, resulting in usage estimates for 96 herbicide active ingredients. This coverage contains estimates of use for forty-first through the sixtieth the most-used herbicides in the conterminous United States. Although crop-acreage data represent the 1987 growing year, the herbicide-use estimates generally reflect 1989 usage amounts (Gianessi and Puffer, 1991). Estimates of herbicide use by county were generated from a combination of data collected from surveys of weed scientists and from surveys of farmers. Herbicide-use profile data were generated from ancillary data sources or were calculated from profiles in neighboring states when no responses to surveys or published reports were available (Gianessi and Puffer, 1991). Sampling and statistics were used to account for nonresponding farm operations. Thus, the information describing crop acreage is subject to sampling variability as well as reporting and coverage errors (U.S. Department of Commerce, 1989b). Census disclosure rules also prevent the publication of information that would disclose the operation of individual farms. Before herbicide-use estimates entered into this coverage, the total use of individual herbicides on all crops for each county was calculated. COUNTY BOUNDARIES The original files for this map were provided in 15 sections. Boundaries near the edges of sections have been adjusted in edgematching. Polygons that extend into the water (an ocean or the Great Lakes) should be considered arbitrary.
Published: 1994-01-01
Version: 1.0
Formats: ArcInfo export format, SDTS
Coverage: 1970-01-01 → ?
Area: 22.67775°–48.26194° lat, -128.07002°–-65.25698° lon
Platforms: Not provided
Processing level: Not provided
Languages: en

CMR concept: C2231549121-CEOS_EXTRA
CMR short name: USGS_herbicide3.v1.0

Estimates of herbicide use for the forty-first through the sixtieth most-used herbicides in the conterminous United States

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