PAN Pesticides Database - California Pesticide Use

Pesticide Use on Onions in 2012

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 2012


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 1,855,800 1.56 120,623 1,184,700
Uses:
Metam potassium (970)
Dithiocarbamate-MITC Yes 654,918 262.3 2,595 2,497
Uses: Fumigant, Fungicide, Microbiocide, Algaecide, Nematicide
Metam-sodium (616)
Dithiocarbamate-MITC Yes 365,176 191.5 2,137 1,907
Uses: Fumigant, Herbicide, Fungicide, Microbiocide, Algaecide
Kaolin (2629)
Inorganic Not Listed 142,609 43.0 12,505 3,319
Uses: Insecticide, Adjuvant, Fungicide, Microbiocide
Mancozeb (211)
Dithiocarbamate-ETU, Inorganic-Zinc Yes 102,185 1.85 57,386 55,251
Uses: Fungicide
Chlorothalonil (677)
Substituted Benzene Yes 84,678 1.23 63,604 68,899
Uses: Fungicide
Sodium hypochlorite (539)
Inorganic Yes 65,932 3.36 1,175 19,647
Uses: Microbiocide, Water Treatment, Nematicide
1,3-Dichloropropene (573)
Halogenated organic Yes 44,786 134.9 351.0 331.9
Uses: Fumigant, Nematicide
Sulfur (560)
Inorganic Not Listed 42,610 7.01 1,954 6,077
Uses: Fungicide, Insecticide
DCPA (179)
Alkyl Phthalate Yes 35,342 5.54 29,904 6,377
Uses: Herbicide
Copper hydroxide (151)
Inorganic-Copper Not Listed 27,316 0.71 40,300 38,237
Uses: Fungicide, Microbiocide, Nematicide
Pendimethalin (1929)
2,6-Dinitroaniline Not Listed 26,982 0.80 31,952 33,863
Uses: Herbicide
Methomyl (383)
N-Methyl Carbamate Yes 26,165 0.68 58,248 38,430
Uses: Insecticide, Breakdown product
Copper sulfate (basic) (162)
Inorganic-Copper Not Listed 24,632 1.70 3,095 14,530
Uses: Fungicide, Algaecide, Molluscicide
Chloropicrin (136)
Inorganic Yes 21,164 77.5 292.0 273.2
Uses: Fumigant, Nematicide
Glyphosate, potassium salt (5820)
Phosphonoglycine Not Listed 16,277 2.02 8,575 8,067
Uses: Herbicide
Iprodione (2081)
Dicarboximide Yes 14,160 0.71 15,490 20,039
Uses: Fungicide
Oxyfluorfen (1973)
Diphenyl ether Yes 10,599 0.14 67,775 73,141
Uses: Herbicide
Ethofumesate (1900)
Unclassified Not Listed 9,100 0.77 11,674 11,880
Uses: Herbicide
Glyphosate, isopropylamine salt (1855)
Phosphonoglycine Not Listed 6,979 1.98 3,328 3,521
Uses: Herbicide
Neem oil (3979, 6065)
Botanical Not Listed 6,600 1.70 4,138 3,881
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
Diazinon (198)
Organophosphorus Yes 5,783 2.10 3,513 2,760
Uses: Insecticide
Calcium hypochlorite (326)
Inorganic Yes 5,334 1.76 210.0 3,033
Uses: Algaecide, Water Treatment
Bromoxynil octanoate (834)
Hydroxybenzonitrile Yes 5,012 0.18 38,077 28,238
Uses: Herbicide
Chlorpyrifos (253)
Organophosphorus Yes 4,979 0.76 18,092 6,551
Uses: Insecticide, Nematicide
Oleic acid, methyl ester (2266)
Fatty acid ester Not Listed 4,833 0.65 23,155 7,492
Uses: Adjuvant
Mefenoxam (4011)
Xylylalanine Yes 4,826 0.10 57,928 47,248
Uses: Fungicide
Maleic hydrazide, potassium salt (2130)
Unclassified Not Listed 4,726 2.63 20,752 1,797
Uses: Plant Growth Regulator, Herbicide
Nonyl phenoxy poly (ethylene oxy) ethanol (1743, 1397, 3999, 5755)
Polyalkyloxy Compound Not Listed 4,707 0.11 51,559 43,915
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/Surfactant
Mineral oil, unrefined (401, 2045, 765, 763, 2687, 473)
Petroleum derivative-Aromatic Yes 4,289 0.28 9,350 15,156
Note! Data for Mineral oil, unrefined 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, Herbicide, Fungicide
Oxamyl (1910)
N-Methyl Carbamate Yes 4,250 0.75 26,138 5,667
Uses: Insecticide, Nematicide
Boscalid (5790)
Anilide Not Listed 4,168 0.27 29,556 15,431
Uses: Fungicide
p-nonylphenyl polyoxyethylene (4-14 moles)dihydrogen phosphate ester (5016)
Polyalkyloxy Compound Not Listed 3,858 0.71 6,137 5,444
Uses: Adjuvant, Soap/Surfactant
Polyoxyethylene sorbitol, mixed ethyl ester (1178)
Polyalkyloxy Compound Not Listed 3,232 1.08 2,971 3,004
Uses: Adjuvant
Pyrimethanil (5864)
Pyrimidine Not Listed 3,213 0.31 7,523 10,531
Uses: Fungicide
Mineral oil, refined (3846, 2601, 2106, 2768, 1641)
Petroleum derivative-Saturated Not Listed 3,116 0.98 3,485 3,192
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
Fenamidone (5791)
Imidazole Not Listed 2,997 0.18 18,939 16,804
Uses: Fungicide
Bensulide (70)
Organophosphorus Yes 2,957 3.60 934.1 822.1
Uses: Herbicide
Methyl soyate (3519)
Fatty acid ester Not Listed 2,875 0.32 11,330 8,851
Uses: Adjuvant
Poly-i-para-menthene (1314)
Unclassified Not Listed 2,579 0.33 2,513 7,848
Uses: Insect Growth Regulator
Bromoxynil heptanoate (5036)
Hydroxybenzonitrile Not Listed 2,459 0.11 30,856 21,564
Uses: Herbicide
Emulsifiable methylated vegetable oil (5224)
Not Listed 2,091 0.21 4,606 10,128
Uses: Insecticide, Adjuvant
Malathion (367)
Organophosphorus Yes 2,061 1.45 3,701 1,424
Uses: Insecticide
Permethrin (2008)
Pyrethroid Yes 2,054 0.24 9,736 8,605
Uses: Insecticide
Pyraclostrobin (5759)
Strobin Not Listed 2,044 0.13 28,293 15,933
Uses: Fungicide
Alpha-pinene polymer (3996)
Polymer Not Listed 1,989 0.22 3,558 8,890
Uses: Insecticide
Clethodim (3566)
Cyclohexenone derivative Not Listed 1,906 0.14 12,340 13,345
Uses: Herbicide
Spinosad (mixture of Factors A and D) (3983)
Spinosyn, Macrocyclic Lactone Not Listed 1,882 0.12 14,386 10,723
Uses: Insecticide
Azoxystrobin (4037)
Strobin Not Listed 1,585 0.18 7,539 9,020
Uses: Fungicide
Copper oxide (ous) (175)
Inorganic-Copper Not Listed 1,438 1.41 655.5 1,022
Uses: Fungicide, Insecticide

Regional Use for All Chemicals on Onions in 2012

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)
1,855,800 1.56 120,623 1,184,700 16,784
Fresno (10)
877,507 2.22 23,658 395,925 2,933
Kings (16)
416,707 5.06 5,030 82,368 538
Imperial (13)
129,799 0.49 19,590 264,806 2,926
Kern (15)
106,173 0.91 8,021 116,756 1,502
Monterey (27)
84,364 0.79 51,514 104,420 3,816
San Luis Obispo (40)
76,154 2.05 1,102 37,111 421
Merced (24)
56,434 4.02 535.5 14,023 131
Colusa (06)
41,387 2.47 899.9 16,724 682
San Joaquin (39)
11,296 0.41 1,811 27,802 452
Glenn (11)
10,351 1.46 376.5 7,106 289
San Benito (35)
7,897 0.63 624.9 12,585 497
Siskiyou (47)
6,869 0.18 1,805 38,698 571
Santa Barbara (42)
6,741 0.66 1,341 10,198 166
Yolo (57)
6,464 0.45 692.3 14,260 637
Los Angeles (19)
6,409 0.61 989.1 10,515 113
Sutter (51)
3,884 0.38 334.0 10,257 419
Modoc (25)
1,938 0.18 1,006 10,650 111
Ventura (56)
1,435 0.28 636.0 2,106 75
Madera (20)
1,138 0.42 138.9 2,713 84
Santa Clara (43)
1,014 0.86 104.0 1,169 93
Tulare (54)
504.9 0.61 91.0 826.7 26
Solano (48)
361.2 0.32 81.6 1,126 49
Butte (04)
313.8 0.29 27.5 1,066 150
Sacramento (34)
266.6 0.29 40.5 910.5 41
Yuba (58)
220.5 0.98 7.00 224.0 26
Riverside (33)
101.6 0.55 134.4 185.0 6
Stanislaus (50)
58.7 0.39 18.0 150.0 23
Contra Costa (07)
8.71 0.48 5.00 18.0 3
Humboldt (12)
0.19 0.69 8.00 0.28 4
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.