PAN Pesticides Database - California Pesticide Use

Pesticide Use in San Mateo in 2016, Bay Area Region

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

Basic Information about this county including contact information for the California County Agricultural Commissioner in this county.
Top 50 pesticides used in this county or region in 2016, 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.
Top crops and sites for chemical use in this county or region in 2016, with information on gross pounds used, application rate, acres planted, and number of applications.

Basic County Information for San Mateo

Agricultural Commissioner Contact Information
Click below for detailed map of
San Mateo
Gail M. Raabe
728 Heller Street
Redwood City, CA 94064
send mail to:
P.O. Box 999
Redwood City, CA 94064-0999
Phone:650-363-4700
Fax: 650-367-0130
Email: SMateoAg@cdfa.ca.gov
Web: http://www.co.sanmateo.ca.us/agriculture/index.htm

For more detailed county agricultural contact information, see the CDFA County Ag Liaison Office.

Top 50 Pesticides Used on All Sites in San Mateo 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 271,025 3.19 6,613 29,176
Uses:
Sulfuryl fluoride (618)
Inorganic Yes 44,939 - - -
Uses: Fumigant
Metam potassium (970)
Dithiocarbamate-MITC Yes 41,986 88.7 697.0 473.4
Uses: Fumigant, Fungicide, Microbiocide, Algaecide, Nematicide
Metam-sodium (616)
Dithiocarbamate-MITC Yes 23,432 - - -
Uses: Fumigant, Herbicide, Fungicide, Microbiocide, Algaecide
1,3-Dichloropropene (573)
Halogenated organic Yes 21,284 117.3 453.0 181.5
Uses: Fumigant, Nematicide
Mineral oil, refined (401, 3846, 3847, 2601, 2106, 2045, 2768)
Petroleum derivative-Saturated Not Listed 19,160 15.1 125.4 282.5
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
Mono- and di- potassium salts of phosphorous acid (5766)
Inorganic Not Listed 15,119 1.70 438.0 409.5
Uses: Fungicide, Microbiocide
Disodium tetraborate decahydrate (79)
Inorganic Not Listed 13,605 - - -
Uses: Insecticide, Herbicide
PCNB (464)
Substituted Benzene Not Listed 8,651 22.5 445.0 369.8
Uses: Fungicide, Nematicide, Algaecide
Glyphosate, isopropylamine salt (1855)
Phosphonoglycine Yes 5,199 1.74 1,598 412.8
Uses: Herbicide
Disodium octaborate tetrahydrate (1800)
Inorganic Not Listed 5,084 - - -
Uses: Insecticide, Herbicide
Sulfur (560)
Inorganic Not Listed 4,938 3.56 859.9 1,385
Uses: Fungicide, Insecticide
Chlorothalonil (677)
Substituted Benzene Yes 4,074 2.84 708.7 633.5
Uses: Fungicide
Sodium dichloro-s-triazinetrione dihydrate (1818)
Triazinetrione Not Listed 3,830 - - -
Uses: Microbiocide, Water Treatment
Sulfonic acids, C14-16-alkane hydroxy and C14-16-alkene, sodium salts (5843)
Soap Not Listed 3,714 - - -
Uses: Adjuvant
Deltamethrin (3010)
Pyrethroid Not Listed 3,473 - - -
Uses: Insecticide
Mineral oil, unrefined (765, 763, 473)
Petroleum derivative-Aromatic Yes 3,461 - - -
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
Glyphosate, potassium salt (5820)
Phosphonoglycine Yes 3,206 0.65 12.0 0.20
Uses: Herbicide
Calcium hypochlorite (326)
Inorganic Not Listed 2,900 - - -
Uses: Algaecide, Water Treatment
Daminozide (7)
Unclassified Yes 2,290 12.5 102.5 39.3
Uses: Plant Growth Regulator
Diquat dibromide (229)
Bipyridylium Yes 2,255 7.15 22.5 112.6
Uses: Herbicide, Dessicant
Glyphosate, dimethylammonium salt (5972)
Phosphonoglycine Yes 1,720 - - -
Uses: Herbicide
Trichloro-s-triazinetrione (407)
Triazinetrione Not Listed 1,492 - - -
Uses: Microbiocide, Water Treatment
Fosetyl-Al (2210)
Unclassified Not Listed 1,389 5.30 62.2 31.4
Uses: Fungicide
Sodium hypochlorite (539)
Inorganic Not Listed 1,166 6.34 - 1.00
Uses: Microbiocide, Water Treatment, Nematicide
Copper hydroxide (151)
Inorganic-Copper Not Listed 1,090 0.89 102.2 45.5
Uses: Fungicide, Microbiocide, Nematicide
Thiophanate-methyl (1696)
Benzimidazole precursor Yes 1,035 2.96 79.0 149.6
Uses: Fungicide
Fipronil (3995)
Pyrazole Not Listed 993.2 - - -
Uses: Insecticide
Cypermethrin (2171)
Pyrethroid Not Listed 963.1 - - -
Uses: Insecticide
Orthoboric acid (769)
Inorganic Not Listed 819.7 - - -
Uses: Insecticide
Mancozeb (211)
Dithiocarbamate-ETU, Inorganic-Zinc Yes 780.3 4.29 50.0 12.4
Uses: Fungicide
2,4-D, dimethylamine salt (806)
Chlorophenoxy acid, salt, or ester Not Listed 751.8 1.17 3,390 276.0
Uses: Herbicide
Nonyl phenoxy poly (ethylene oxy) ethanol (1743, 1397, 3999, 5755)
Polyalkyloxy Compound Not Listed 728.1 0.05 286.8 221.6
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
Limonene (979, 2531)
Oil - essential, Botanical Not Listed 714.5 - - -
Note! Data for Limonene summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Insect Repellent, Insecticide, Dog and Cat Repellent
1-bromo-3-chloro-5,5-dimethyl hydantoin (2080)
Hydantoin Not Listed 706.3 46.8 - 11.0
Uses: Microbiocide, Fungicide, Herbicide
Imidacloprid (3849)
Neonicotinoid Not Listed 673.9 0.06 1,024 1,574
Uses: Insecticide
Lecithin (3264)
Botanical Not Listed 633.9 0.31 1,007 1,946
Uses: Fungicide
Aluminum phosphide (484)
Inorganic Yes 622.9 - - -
Uses: Fumigant, Fungicide
Glutaraldehyde (139)
Not Listed 618.1 33.0 - 9.00
Uses: Microbiocide, Fungicide
2,2-dibromo-3-nitrilopropionamide (1749)
Not Listed 566.2 - - -
Uses: Microbiocide
C9-C11 alkyl, oligomeric D-glucopyranoside (4006)
Not Listed 542.2 - - -
Uses:
Triclopyr, butoxyethyl ester (2170)
Chloropyridinyl, Glycol Ether Not Listed 538.4 1.37 - 3.00
Uses: Herbicide
Bacillus sphaericus, serotype H-5A5B, strain 2362 (2409)
Microbial Not Listed 535.9 - - -
Uses: Insecticide
Potassium bicarbonate (5037)
Inorganic Not Listed 528.6 3.35 59.9 157.4
Uses: Fungicide
Hexylene glycol (1254)
Glycol Not Listed 488.0 - - -
Uses: Microbiocide
2-Butoxyethanol (1880, 89)
Alcohol/Ether Not Listed 488.0 - - -
Note! Data for 2-Butoxyethanol summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Fungicide, Microbiocide, Solvent, Adjuvant
Ethephon (1626)
Organophosphorus Yes 480.5 2.50 34.2 19.5
Uses: Plant Growth Regulator
Hydrogen peroxide (1794)
Peroxide Not Listed 478.0 2.54 21.3 35.9
Uses: Microbiocide, Fungicide, Herbicide, Rodenticide
Triclopyr, triethylamine salt (2131)
Chloropyridinyl Not Listed 469.9 1.54 450.0 47.2
Uses: Herbicide
Permethrin (2008)
Pyrethroid Yes 467.9 0.54 22.2 1.24
Uses: Insecticide

Top 50 Crops and Sites for for All Chemicals use in San Mateo in 2016

Crop or Site
(Commodity Code)
Gross
Pounds
Application Rate
pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated Application
Count
All Sites (00)
271,025 3.19 6,613 29,176 21,439
Brussel Sprouts (13006)
77,845 4.22 830.0 18,443 1,226
Structural Pest Control (10)
57,876 - - - 8,579
Landscape (30)
51,546 0.19 5.42 1.00 4,339
Right of Way (40)
50,447 - - - 464
Public Health Pest Control (50)
9,306 - - - 225
Wine Grapes (29143)
6,521 1.93 146.7 3,336 395
Greenhouse Plants (153)
5,991 1.22 24.5 1,025 3,932
Aquatic Industrial Uses (65503)
2,978 27.7 - 45.0 140
Greenhouse Flowers (151)
2,015 2.54 5.00 751.2 325
Outdoor Container Nursery (154)
1,638 1.71 122.5 726.0 690
Irrigation Systems (65021)
1,581 - - - 8
Aquatic Area (65000)
1,241 4.62 - 268.6 14
Pasture (28035)
566.9 1.53 1,690 371.0 21
Bean, Broad (Fava, Horse Bean) (28059)
467.0 0.26 210.5 1,819 249
Rangeland (28045)
209.3 1.11 2,840 189.0 8
Uncultivated Agricultural Area (66000)
208.5 0.20 160.0 1,056 68
Peas (29127)
166.2 0.98 80.0 169.0 27
Outdoor Flower Nursery (152)
92.1 1.78 83.0 51.5 29
Leeks (14010)
59.7 0.15 111.0 387.0 48
Drinking Water (65015)
54.9 - - - 10
Outdoor Propagation Nursery (156)
47.1 4.21 - 11.2 4
Oats for Forage (22006)
32.7 0.73 160.0 45.0 1
Artichokes (13018)
21.6 0.07 64.0 299.0 24
Greenhouse Propagation (155)
21.5 0.61 - 21.6 8
Vertebrate Pest Control (80)
17.9 - - - 32
Oats (29125)
9.04 4.52 30.0 2.00 1
Succulent Beans (15003)
8.80 0.18 10.0 50.0 3
Beans (28001)
7.52 0.75 20.0 10.0 1
Apples (4001)
7.29 0.19 3.00 39.0 13
Head Lettuce (13045)
6.78 - - - 49
Leaf Lettuce (13031)
6.77 - - - 49
Pears (4003)
6.75 0.15 4.00 44.0 11
Fennel (28008)
5.11 0.46 12.0 11.0 9
Peaches (5004)
4.00 4.00 1.00 1.00 1
Kale (13011)
3.76 - - - 49
Horseradish (28011)
2.01 - - - 25
null (33007)
1.78 0.41 - 4.35 8
Spices (8000)
1.20 - - - 13
Tomatoes (11005)
0.73 - - - 28
Bell Peppers (11003)
0.39 - - - 17
Mustard (29123)
0.31 - - - 98
Leafy Vegetables (13000)
0.20 - - - 49
Watercress (13027)
0.20 - - - 49
Swiss Chard (13025)
0.20 - - - 49
Chinese Greens (13999)
0.11 - - - 49
Empty Greenhouses (61006)
0.06 - - - 1
Regulatory (100)
0.0037 - - - 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.