PAN Pesticides Database - California Pesticide Use

Pesticide Use on Corn in 2009

Note: See Working with the Information on this Page section below for important notes about this data.

Identifying information about Corn, including commodity group and code number.
Top 50 pesticides used on Corn, with information on the identity, use type and toxicity of each pesticide, as well as gross pounds used, application rate, acres planted, and number of applications.
Pesticide use on Corn by county for all counties in California, with information on gross pounds used, application rate, acres planted, and number of applications.

Crop or Site information for Corn

Basic Identification Information About This Crop or Site
Name
CDFA Commodity Group
Use Category
EPA Site Code
DPR Site Code
Corn, General
Field Crops
AG
29119
29119

There are two types of corn reported in the PUR data: for human consumption and for forage. Due to inconsistencies in how these are reported, actual variability in acres planted, and possibly errors in the original data as well, reported corn acreage is

 

Top 50 Pesticides Used on Corn in California in 2009


Totals for 2003 and later may be under-reported due to omission of adjuvants in DPR's data since that time.
Chemical Name
(CA Chem Code)
Chemical Class PAN Bad Actor Gross
Pounds
Application Rate
Pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated
All Chemicals (00)
Not Listed 267,014 0.23 42,046 1,171,210
Uses:
Methomyl (383)
N-Methyl Carbamate Yes 44,354 0.41 21,350 107,715
Uses: Insecticide, Breakdown product
Sulfur (560)
Inorganic Not Listed 42,353 27.6 1,587 1,537
Uses: Fungicide, Insecticide
Polyoxyethylene sorbitol, mixed ethyl ester (1178)
Polyalkyloxy Compound Not Listed 26,890 1.04 5,150 25,925
Uses: Adjuvant
Propargite (445)
Unclassified Yes 23,632 2.33 9,971 10,149
Uses: Insecticide
Glyphosate, isopropylamine salt (1855)
Phosphonoglycine Not Listed 11,863 1.32 7,821 8,953
Uses: Herbicide
Pendimethalin (1929)
2,6-Dinitroaniline Not Listed 8,679 1.08 7,392 8,025
Uses: Herbicide
Atrazine (45)
Triazine Yes 7,711 1.22 6,205 6,316
Uses: Herbicide
Bifenthrin (2300)
Pyrethroid Yes 6,271 0.36 9,997 17,576
Uses: Insecticide
Nonyl phenoxy poly (ethylene oxy) ethanol (1743, 1397, 3999, 5755)
Polyalkyloxy Compound Not Listed 6,054 0.10 17,408 61,937
Note! Data for Nonyl phenoxy poly (ethylene oxy) ethanol summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Adjuvant, Plant Growth Regulator, Adjuvant, Soap/Surfactant
MCIAL code 401 (2045)
Petroleum derivative Not Listed 5,829 0.22 5,692 26,402
Uses: Insecticide, Adjuvant
Fatty Acids, C16-C18 and C18-unsaturated, methyl esters (5881)
Fatty acid ester Not Listed 5,780 0.15 4,318 37,808
Uses: Adjuvant
Mineral oil (401, 2687, 473)
Petroleum derivative Yes 5,774 0.68 2,467 8,488
Note! Data for Mineral oil summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Insecticide, Adjuvant
Metolachlor, (S) (5133)
Chloroacetanilide Yes 5,264 1.32 4,431 3,982
Uses: Herbicide
Methyl soyate (3519)
Fatty acid ester Not Listed 5,243 0.20 6,347 25,590
Uses: Adjuvant
Esfenvalerate (2321)
Pyrethroid Not Listed 3,819 0.05 16,690 82,169
Uses: Insecticide
Lecithin (3264)
Botanical Not Listed 3,756 0.14 3,322 27,388
Uses: Fungicide
Propionic acid (505)
Unclassified Yes 3,349 0.13 3,322 26,473
Uses: Fungicide, Microbiocide, Preservative
Metolachlor (1996)
Chloroacetanilide Yes 3,037 1.95 1,631 1,556
Uses: Herbicide
Chlorpyrifos (253)
Organophosphorus Yes 2,452 0.62 4,513 3,927
Uses: Insecticide, Nematicide
Oxydemeton-methyl (382)
Organophosphorus Yes 2,338 0.53 4,025 4,381
Uses: Insecticide
Petroleum oil, unclassified (765)
Petroleum derivative Not Listed 2,219 2.28 820.0 973.5
Uses: Insecticide, Herbicide, Fungicide, Adjuvant
Undecyl polyoxyethylene (5 moles ethylene oxide) (3929)
Polyalkyloxy Compound Not Listed 2,192 0.13 3,324 16,771
Uses: Adjuvant
Diazinon (198)
Organophosphorus Yes 2,000 0.82 2,222 2,440
Uses: Insecticide
Poly (methylene para nonylphenoxy) - poly (oxypropylene) propanol (1788)
Polyalkyloxy Compound Not Listed 1,966 0.05 4,543 38,050
Uses: Adjuvant
Bacillus thuringiensis (berliner), subsp. Kurstaki, strain SA-11 (3862)
Microbial Not Listed 1,926 0.49 1,068 3,938
Uses: Insecticide
Alachlor (678)
Chloroacetanilide Yes 1,897 2.94 1,082 644.2
Uses: Herbicide
Flubendiamide (5948)
Anthranilic diamide Not Listed 1,749 0.08 6,642 21,604
Uses: Insecticide
Poly oxyethylated tallow amine (2807)
Polyalkyloxy Compound Not Listed 1,548 0.04 4,301 37,808
Uses: Adjuvant
Malathion (367)
Organophosphorus Yes 1,421 1.10 705.0 1,295
Uses: Insecticide
Glyphosate, potassium salt (5820)
Phosphonoglycine Not Listed 1,272 1.03 1,384 1,234
Uses: Herbicide
Carbaryl (105)
N-Methyl Carbamate Yes 1,229 1.82 410.0 675.0
Uses: Insecticide, Plant Growth Regulator, Nematicide
Spiromesifen (5858)
Keto-enol Not Listed 1,220 0.17 7,032 7,371
Uses: Insecticide
Indoxacarb, S-isomer (5331)
Unclassified Not Listed 1,190 0.06 5,078 20,543
Uses: Insecticide
Oleic acid, methyl ester (2266)
Fatty acid ester Not Listed 1,183 0.48 2,409 2,472
Uses: Adjuvant
Cyhalothrin, lambda (2297)
Pyrethroid Not Listed 1,148 0.03 10,184 38,607
Uses: Insecticide
Citric acid (142)
Unclassified Yes 1,143 0.05 5,415 22,833
Uses: pH Adjustment, Fungicide, Microbiocide
Polybutenes (1040)
Polymer Not Listed 1,032 0.03 4,301 37,808
Uses: Rodenticide
Phosphoric acid (871)
Inorganic Not Listed 995.1 0.04 9,545 22,699
Uses: Fungicide, pH Adjustment, Herbicide, Microbiocide
Fatty acids, mixed (2069)
Fatty acid Not Listed 909.9 0.04 4,075 22,538
Uses: Adjuvant
Aluminum phosphide (484)
Inorganic Yes 824.1 0.0042 162.0 162.0
Uses: Fumigant, Fungicide
Cyfluthrin, beta (3956)
Pyrethroid Not Listed 816.7 0.02 9,262 35,804
Uses: Insecticide
Glyphosate (2997)
Phosphonoglycine Not Listed 739.1 0.98 862.9 750.9
Uses: Herbicide
Tall oil acids (1389)
Fatty acid Not Listed 706.9 0.04 5,912 16,654
Uses: Adjuvant
Paraquat dichloride (1601)
Bipyridylium Yes 706.9 0.80 811.1 885.6
Uses: Herbicide
Alkylaryl poly(oxyethylene) glycol (748)
Polyalkyloxy Compound Not Listed 547.7 0.19 2,618 2,937
Uses: Adjuvant
Cypermethrin, zeta (3866)
Pyrethroid Yes 524.1 0.03 7,756 16,785
Uses: Insecticide
Diethylene glycol (2334)
Glycol Not Listed 437.1 0.05 2,734 9,486
Uses: Adjuvant, Solvent
Permethrin (2008)
Pyrethroid Yes 414.3 0.19 1,934 2,151
Uses: Insecticide
Ammonium sulfate (1363)
Inorganic Not Listed 377.7 0.25 1,458 1,536
Uses: Herbicide, pH Adjustment

Regional Use for All Chemicals on Corn in 2009

Region
(County Code)
Gross
Pounds
Application
Rate
pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated Application
Count
California (00)
267,014 0.23 42,046 1,171,210 14,902
Imperial (13)
69,945 0.33 8,632 209,905 2,529
Fresno (10)
64,959 0.15 8,240 427,977 3,167
Merced (24)
51,771 0.82 9,200 62,902 561
Contra Costa (07)
34,062 0.19 3,882 181,038 2,909
San Joaquin (39)
15,472 0.20 2,176 79,214 1,529
Riverside (33)
10,674 0.11 2,588 95,780 1,660
Ventura (56)
6,482 0.17 1,320 38,379 450
Santa Clara (43)
2,876 0.23 1,030 12,507 436
Sacramento (34)
2,818 0.23 634.0 12,013 391
Yolo (57)
1,534 0.14 525.7 11,061 187
Tulare (54)
1,340 0.24 624.0 5,470 119
Solano (48)
1,185 0.06 458.0 20,263 278
Madera (20)
1,122 0.14 451.9 2,105 81
Los Angeles (19)
909.3 0.13 170.0 7,086 191
Santa Barbara (42)
547.4 0.69 440.0 790.0 13
Kings (16)
497.6 0.47 289.0 1,061 50
Tehama (52)
180.9 0.12 109.0 1,520 18
Colusa (06)
159.4 0.24 99.5 661.5 6
Monterey (27)
149.0 0.68 824.0 218.5 51
Glenn (11)
98.4 0.70 102.0 140.4 5
San Diego (37)
94.4 0.19 73.5 499.0 155
Stanislaus (50)
51.5 2.29 8.75 22.5 16
San Benito (35)
44.0 0.30 19.0 148.0 16
Orange (30)
27.5 0.10 72.5 282.0 23
Mendocino (23)
8.74 0.07 20.0 130.5 30
Yuba (58)
5.53 1.58 4.50 3.50 1
San Luis Obispo (40)
1.42 0.05 50.3 26.5 28
Lake (17)
0.43 0.43 1.00 1.00 1
Shasta (45)
0.09 0.45 0.20 0.20 1
Working with the Information on this Page

* Complete 2001 data for Kern county was never submitted by the Kern County Agricultural Commissioners office. This missing data includes approximately 32,000 records totaling roughly 10 million pounds. An omission of this scale will significantly impact statewide trends.

** The 2005 data for Ventura county is incomplete because not all of the data was available at the time of DPR's release. Missing data includes mostly applications made in November and December. An estimate based on reported use in Ventura County during November and December from 2002 to 2004 suggests that the 2005 total pounds is underreported by approximately 500,000 pounds. The active ingredients most affected are captan and petroleum oil. See the DPR's 2005 PUR report for additional details.

NOTE! See methodology and documentation for California Pesticide Use Reporting for important qualifications on these numbers.

Click on the commodities name links for special caveats on the data for each commodity. For more detailed use information, including data for other years, search our California Pesticide Use database. Original source for all pesticide use data is the California Pesticide Use Report (PUR) dataset, collected and managed by the California Department of Pesticide Regulation. Significant processing of the original dataset is required to generate the summary data presented here; see documentation for a full discussion of data handling.

NOTE! Comments on the accuracy of Acres Planted reflect PAN's analysis of acreage data from the California Agricultural Statistics Service (CASS) and Department of Pesticide Regulation Pesticide Use Reporting data. The method used to assess acreage accuracy is described in the documentation. Accuracy was evaluated for aggregate, statewide California acreage, but not for smaller regions (e.g., counties). See CASS acreage estimates for additional information.

Click on underlined terms for definitions or go to the Pesticide Tutorial overview page.

Any underlined term with a book icon has additional information.

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Definitions
  • Acres Planted is the planted acreage of the crop in the selected region where the selected chemical was applied. This figure may not be the total acreage of the selected crop. To obtain the total planted acreage for a crop or county, see the crop and county pages available from the Pesticide Use Search Page. See documentation for important distinctions between acres treated and acres planted.
  • Acres Treated is the acreage of the crop actually treated with the pesticide. Gross Pounds applied divided by Acres Treated is the application rate of the pesticide. The difference between Acres Planted and Acres Treated is best explained through an example:If a farmer has a 100-acre field and sprays 50 acres, then the Acres Planted will be 100 and the Acres Treated will be 50. If a farmer sprays 50 of their 100 acres three times, then the Acres Planted will remain at 100 acres, but now the value of Acres Treated will be 150. This figure may not be the total acreage of the selected crop. See documentation for further distinctions between acres treated and acres planted.
  • Application Count indicates the number of times this chemical was applied.
  • Application Rate indicates the total pounds applied to acreage divided by the total treated acres. Only pounds applied to acreage are used to calculate the application rate. This excludes pesticides used to fumigate stored commodities or other non-cropland applications. See documentation for important distinctions between acres treated and acres planted.
  • Chemical Class indicates the chemical classification of this chemical.
  • Chemical Code is the California Department of Pesticide Regulation code number assigned as an identifier for each chemical.
  • Chemical Uses indicates the major uses for this chemical, with the most common use listed first.
  • County Code is a code number that various California State agencies use to identify each California county. There are 58 total counties.
  • Field Count is the number of fields where this chemical was applied.
  • Gross Pounds indicates the total pounds used, including both pounds used on acreage and pounds used in other applications such as commodity fumigation.
  • PAN Bad Actor indicates whether this chemical belongs to the group of most toxic pesticides or not. See link for a full definition of this term.