PAN Pesticides Database - California Pesticide Use

Pesticide Use on Onions in 2016

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

Identifying information about Onions, including commodity group and code number.
Top 50 pesticides used on Onions, 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 Onions 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 Onions

Basic Identification Information About This Crop or Site
Name
CDFA Commodity Group
Use Category
EPA Site Code
DPR Site Code
Onion, General
Vegetables and Melons
AG
14011
14011

PUR estimates of acres planted for onions may be higher than actual acreage due to double counting. For crops with a growing season that spans two calendar years, "acres planted" calculated from the PUR data may be higher than actual acreage because acr

 

Top 50 Pesticides Used on Onions in California in 2016


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 (NA, 00)
Not Listed 1,622,670 1.03 152,068 1,565,160
Uses:
Metam potassium (970)
Dithiocarbamate-MITC Yes 317,434 240.0 1,164 1,322
Uses: Fumigant, Fungicide, Microbiocide, Algaecide, Nematicide
Kaolin (2629)
Inorganic Not Listed 311,111 31.7 26,509 9,808
Uses: Insecticide, Adjuvant, Fungicide, Microbiocide
Metam-sodium (616)
Dithiocarbamate-MITC Yes 150,467 188.4 823.5 798.5
Uses: Fumigant, Herbicide, Fungicide, Microbiocide, Algaecide
Mancozeb (211)
Dithiocarbamate-ETU, Inorganic-Zinc Yes 143,583 1.90 73,664 75,719
Uses: Fungicide
Sulfur (560)
Inorganic Not Listed 92,884 10.6 3,148 8,725
Uses: Fungicide, Insecticide
Chlorothalonil (677)
Substituted Benzene Yes 83,094 1.18 74,385 70,475
Uses: Fungicide
Copper sulfate (basic) (162)
Inorganic-Copper Not Listed 55,353 1.72 5,749 32,253
Uses: Fungicide, Algaecide, Molluscicide
DCPA (179)
Alkyl Phthalate Yes 53,281 5.86 47,302 9,093
Uses: Herbicide
Mono- and di- potassium salts of phosphorous acid (5766)
Inorganic Not Listed 35,158 3.60 6,105 9,777
Uses: Fungicide, Microbiocide
Sodium hypochlorite (539)
Inorganic Not Listed 34,730 1.57 1,738 22,099
Uses: Microbiocide, Water Treatment, Nematicide
Pendimethalin (1929)
2,6-Dinitroaniline Not Listed 28,778 0.74 39,144 38,915
Uses: Herbicide
Copper hydroxide (151)
Inorganic-Copper Not Listed 23,940 0.68 46,233 34,968
Uses: Fungicide, Microbiocide, Nematicide
Methomyl (383)
N-Methyl Carbamate Yes 22,095 0.66 69,534 33,662
Uses: Insecticide, Breakdown product
Nonyl phenoxy poly (ethylene oxy) ethanol (1743, 1397, 3999, 5755)
Polyalkyloxy Compound Not Listed 20,166 0.25 74,031 79,281
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, Soap or Surfactant
Glyphosate, potassium salt (5820)
Phosphonoglycine Yes 14,959 1.84 7,081 8,137
Uses: Herbicide
Bensulide (70)
Organophosphorus Yes 13,448 2.78 4,824 4,844
Uses: Herbicide
Iprodione (2081)
Dicarboximide Yes 11,540 0.66 20,197 17,396
Uses: Fungicide
Oxyfluorfen (1973)
Diphenyl ether Yes 10,134 0.14 79,068 71,886
Uses: Herbicide
Bacillus subtilis var. amyloliquefaciens strain D747 (6082)
Microbial Not Listed 9,761 4.93 1,302 1,980
Uses: Fungicide, Plant Growth Regulator
Neem oil (3979, 6065)
Botanical Not Listed 8,630 2.01 2,429 4,286
Note! Data for Neem 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
Mineral oil, refined (401, 3846, 3847, 2601, 2106, 2045, 2768)
Petroleum derivative-Saturated Not Listed 8,537 0.43 14,498 19,761
Note! Data for Mineral oil, refined summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Herbicide, Plant Growth Regulator, Insecticide, Adjuvant, Solvent
Mefenoxam (4011)
Xylylalanine Not Listed 7,172 0.10 71,445 69,921
Uses: Fungicide
Bromoxynil octanoate (834)
Hydroxybenzonitrile Yes 7,130 0.21 41,299 33,573
Uses: Herbicide
Glyphosate, isopropylamine salt (1855)
Phosphonoglycine Yes 7,059 1.04 3,982 6,793
Uses: Herbicide
Methyl soyate (3519)
Fatty acid ester Not Listed 6,925 0.24 53,863 29,173
Uses: Adjuvant
S-Dimethenamid (5919)
Amide Not Listed 5,994 0.43 21,456 13,819
Uses: Herbicide
Diazinon (198)
Organophosphorus Yes 5,859 3.60 2,171 1,626
Uses: Insecticide
Polyoxyethylene sorbitol, mixed ethyl ester (1178)
Polyalkyloxy Compound Not Listed 5,674 1.02 5,036 5,537
Uses: Adjuvant
Hydrogen peroxide (1794)
Peroxide Not Listed 5,606 1.51 2,939 3,705
Uses: Microbiocide, Fungicide, Herbicide, Rodenticide
Penthiopyrad (6020)
Amide, Pyrazole Not Listed 5,347 0.30 17,586 17,726
Uses: Fungicide
Ethofumesate (1900)
Unclassified Not Listed 5,263 0.57 8,831 9,200
Uses: Herbicide
Fenamidone (5791)
Imidazole Not Listed 5,201 0.18 35,504 29,663
Uses: Fungicide
Dimethomorph (4003)
Morpholine Not Listed 4,504 0.20 24,637 22,523
Uses: Fungicide
Chlorpyrifos (253)
Organophosphorus Yes 4,235 0.98 4,916 4,343
Uses: Insecticide, Nematicide
Ametoctradin (6025)
Triazolopyrimidine Not Listed 3,945 0.27 19,049 14,563
Uses: Fungicide
Chromobacterium subtsugae strain PRAA4-1 cells and spent fermentation media (6024)
Microbial Not Listed 3,909 0.86 2,609 4,570
Uses: Insecticide
Petroleum distillates, aromatic (1814)
Petroleum derivative-Aromatic Yes 3,301 1.00 3,057 3,299
Uses: Solvent, Herbicide, Insecticide
Maleic hydrazide, potassium salt (2130)
Unclassified Not Listed 3,000 1.51 30,563 1,992
Uses: Plant Growth Regulator, Herbicide
Emulsifiable methylated vegetable oil (5224)
Not Listed 2,722 0.28 4,553 9,702
Uses: Insecticide, Adjuvant
Thiram (589)
Dithiocarbamate Yes 2,636 0.0019 - 150.6
Uses: Fungicide
Fatty Acids, C16-C18 and C18-unsaturated, methyl esters (5881)
Fatty acid ester Not Listed 2,586 0.26 3,660 9,868
Uses: Adjuvant
Boscalid (5790)
Anilide Not Listed 2,555 0.24 40,318 10,751
Uses: Fungicide
Lecithin (3264)
Botanical Not Listed 2,375 0.20 33,981 11,684
Uses: Fungicide
Undecyl polyoxyethylene (5 moles ethylene oxide) (3929)
Polyalkyloxy Compound Not Listed 2,301 0.10 17,681 23,164
Uses: Adjuvant
Azoxystrobin (4037)
Strobin Not Listed 2,220 0.17 7,168 12,944
Uses: Fungicide
Fluazifop-P-butyl (5815)
Aryloxyphenoxy propionic acid Yes 2,218 0.33 6,496 6,631
Uses: Herbicide
Oleic acid, methyl ester (2266)
Fatty acid ester Not Listed 2,152 0.31 27,007 6,849
Uses: Adjuvant
Cyprodinil (4000)
Pyrimidine Not Listed 2,043 0.30 3,479 6,865
Uses: Fungicide
Clethodim (3566)
Cyclohexenone derivative Not Listed 2,031 0.17 11,032 11,652
Uses: Herbicide

Regional Use for All Chemicals on Onions in 2016

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)
1,622,670 1.03 152,068 1,565,160 20,251
Fresno (10)
726,730 1.60 17,462 454,130 3,751
Kings (16)
333,938 2.10 4,396 158,652 1,084
Imperial (13)
181,430 0.49 26,369 367,327 4,014
Kern (15)
108,564 0.62 6,329 174,324 1,714
Monterey (27)
103,460 1.03 84,749 97,913 3,886
Los Angeles (19)
46,445 0.91 1,626 51,214 719
Merced (24)
31,386 1.65 266.5 19,007 214
Riverside (33)
12,286 0.37 2,246 32,987 630
Colusa (06)
11,248 0.62 920.4 18,046 817
San Luis Obispo (40)
11,133 1.66 609.2 6,718 348
Modoc (25)
9,994 0.27 1,188 37,521 314
Siskiyou (47)
9,495 0.16 1,478 58,005 578
San Benito (35)
8,020 0.71 538.5 11,302 278
San Joaquin (39)
7,111 0.35 1,039 20,302 283
Madera (20)
4,196 0.22 560.2 19,150 271
Yolo (57)
4,067 0.40 559.6 10,062 477
Santa Barbara (42)
3,874 0.26 550.0 14,935 125
Santa Clara (43)
2,596 3.31 169.1 785.0 32
Ventura (56)
2,011 0.37 517.0 3,185 109
Glenn (11)
1,665 0.55 172.8 3,034 136
Sutter (51)
1,419 0.40 94.0 3,567 236
Tulare (54)
618.0 0.65 71.0 955.7 34
Sacramento (34)
361.3 0.72 29.0 503.0 40
Butte (04)
346.0 0.39 24.5 882.0 62
Solano (48)
268.6 0.42 78.7 644.8 70
Contra Costa (07)
4.92 1.23 2.00 4.00 2
San Bernardino (36)
4.08 4.08 4.00 1.00 2
Placer (31)
1.68 1.12 1.50 1.50 1
Lassen (18)
1.43 0.36 5.00 4.00 2
Humboldt (12)
1.29 0.66 8.00 1.96 12
Orange (30)
0.19 0.31 4.00 0.60 5
Stanislaus (50)
0.04 - - - 4
Santa Cruz (44)
0.0044 - 0.25 - 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.