PAN Pesticides Database - California Pesticide Use

Pesticide Use on Zucchini Squash in 2012

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

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

Basic Identification Information About This Crop or Site
CDFA Commodity Group
Use Category
EPA Site Code
DPR Site Code
Squash, Zucchini
Vegetables and Melons

Accuracy of acres planted data not evaluated for this crop. There are four types of squash in the PUR data set. If farmers are inconsistent in how they categorize their crop it will lead to incorrect estimates of acres planted for squash.


Top 50 Pesticides Used on Zucchini Squash 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
Application Rate
Pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated
All Chemicals (NA, 00)
Not Listed 2,054 0.72 645.1 2,838
Bensulide (70)
Organophosphorus Yes 515.3 4.64 152.1 111.0
Uses: Herbicide
Sulfur (560)
Inorganic Not Listed 353.5 5.46 63.0 64.7
Uses: Fungicide, Insecticide
Malathion (367)
Organophosphorus Yes 225.0 1.94 67.0 116.0
Uses: Insecticide
Glyphosate, isopropylamine salt (1855)
Phosphonoglycine Not Listed 209.8 3.00 112.0 70.0
Uses: Herbicide
Potassium bicarbonate (5037)
Inorganic Not Listed 182.0 3.87 110.1 47.0
Uses: Fungicide
Fatty Acids, C16-C18 and C18-unsaturated, methyl esters (5881)
Fatty acid ester Not Listed 63.9 0.31 99.1 203.0
Uses: Adjuvant
Dimethoate (216)
Organophosphorus Yes 52.0 0.49 105.0 105.0
Uses: Insecticide
Neem oil (3979, 6065)
Botanical Not Listed 45.9 2.08 24.8 22.0
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
Potash soap (1596)
Soap Not Listed 45.8 9.16 7.75 5.00
Uses: Herbicide, Insecticide, Adjuvant
Lecithin (3264)
Botanical Not Listed 32.5 0.46 112.0 70.0
Uses: Fungicide
Bacillus thuringiensis, Subsp. Aizawai, Strain ABTS-1857 (5879)
Microbial Not Listed 31.3 0.92 253.0 34.0
Uses: Insecticide
Bacillus thuringiensis (berliner), subsp. Kurstaki, strain SA-11 (3862)
Microbial Not Listed 26.2 1.06 17.4 24.8
Uses: Insecticide
Imidacloprid (3849)
Neonicotinoid Not Listed 23.3 0.38 57.0 61.0
Uses: Insecticide
Poly (methylene para nonylphenoxy) - poly (oxypropylene) propanol (1788)
Polyalkyloxy Compound Not Listed 21.7 0.11 98.5 203.0
Uses: Adjuvant
Copper hydroxide (151)
Inorganic-Copper Not Listed 21.5 3.58 33.0 6.00
Uses: Fungicide, Microbiocide, Nematicide
Myclobutanil (2245)
Azole Yes 18.0 0.12 98.5 154.0
Uses: Fungicide
Bacillus thuringiensis, subsp. Kurstaki, strain ABTS-351, fermentation solids and solubles (5829)
Microbial Not Listed 17.8 0.99 33.0 18.0
Uses: Insecticide
Mineral oil, unrefined (401, 2045, 765, 763, 2687, 473)
Petroleum derivative-Aromatic Yes 17.5 2.92 33.0 6.00
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
Poly oxyethylated tallow amine (2807, 6097)
Polyalkyloxy Compound Not Listed 17.1 0.08 98.5 203.0
Note! Data for Poly oxyethylated tallow amine summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Adjuvant
p-nonylphenyl polyoxyethylene (4-14 moles)dihydrogen phosphate ester (5016)
Polyalkyloxy Compound Not Listed 16.3 0.23 112.0 70.0
Uses: Adjuvant, Soap/Surfactant
Methyl soyate (3519)
Fatty acid ester Not Listed 16.3 0.23 112.0 70.0
Uses: Adjuvant
Copper octanoate (5225)
Inorganic-Copper Not Listed 12.8 0.69 17.4 18.5
Uses: Fungicide
Hydrogen peroxide (1794)
Peroxide, Inorganic Yes 12.3 2.46 163.0 5.00
Uses: Microbiocide, Fungicide, Herbicide, Rodenticide
Polybutenes (1040)
Polymer Not Listed 11.4 0.06 98.5 203.0
Uses: Rodenticide
Pymetrozine (5232)
Triazine Yes 8.42 0.09 58.4 98.0
Uses: Insecticide
Chlorantraniliprole (5964)
Anthranilic diamide Not Listed 8.20 0.06 130.0 130.0
Uses: Insecticide
Reynoutria sachalinensis (5823)
Microbial Not Listed 8.13 0.33 25.0 25.0
Uses: Fungicide, Plant Growth Regulator
Boscalid (5790)
Anilide Not Listed 7.09 0.28 25.0 25.0
Uses: Fungicide
Pyrethrins (510)
Botanical Yes 5.29 0.08 283.4 66.4
Uses: Insecticide
Bifenthrin (2300)
Pyrethroid Yes 5.25 0.05 105.0 105.0
Uses: Insecticide
Acetamiprid (5762)
Neonicotinoid Not Listed 4.69 0.04 108.0 108.0
Uses: Insecticide
Cypermethrin, zeta (3866)
Pyrethroid Yes 4.55 0.03 98.5 174.0
Uses: Insecticide
Pyraclostrobin (5759)
Strobin Not Listed 4.07 0.15 27.4 27.4
Uses: Fungicide
Bacillus pumilus strain QST 2808 (5770)
Microbial Not Listed 2.05 0.07 17.4 31.0
Uses: Plant Growth Regulator
Permethrin (2008)
Pyrethroid Yes 2.03 0.16 27.6 13.0
Uses: Insecticide
Alcohol ethoxylate (C9-C11, 6 EO) (2700)
Polyalkyloxy Compound Not Listed 1.66 0.07 17.4 24.8
Uses: Adjuvant
Dimethyl poly siloxane (1861)
Silicone Not Listed 1.33 0.02 112.0 70.0
Uses: Adjuvant, Insecticide
Azadirachtin (2328)
Botanical Not Listed 0.84 0.03 17.4 24.8
Uses: Insecticide, Nematicide
Esfenvalerate (2321)
Pyrethroid Not Listed 0.73 0.06 8.00 12.0
Uses: Insecticide
Bacillus thuringiensis (berliner), subsp. Kurstaki, serotype 3a,3b (3858)
Microbial Not Listed 0.59 0.13 5.00 4.60
Uses: Insecticide
Methyl silicone resins (3689)
Silicone Not Listed 0.08 0.04 2.35 2.35
Uses: Adjuvant
Cyhalothrin, lambda (2297)
Pyrethroid Not Listed 0.07 0.03 2.35 2.35
Uses: Insecticide
Phosphoric acid (871)
Inorganic Not Listed 0.04 0.02 2.35 2.35
Uses: Fungicide, pH Adjustment, Herbicide, Microbiocide
Avermectin (2254, 5916, 5917)
Botanical, Macrocyclic Lactone Yes 0.03 0.01 2.35 2.35
Note! Data for Avermectin summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Insecticide
Beauveria bassiana strain GHA (3993)
Microbial Not Listed 0.0069 0.07 0.10 0.10
Uses: Insecticide

Regional Use for All Chemicals on Zucchini Squash in 2012

(County Code)
pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated Application
California (00)
2,054 0.72 645.1 2,838 169
San Luis Obispo (40)
811.7 0.46 115.9 1,760 101
Fresno (10)
764.6 1.63 120.0 470.0 15
Santa Barbara (42)
177.4 2.42 33.0 73.3 25
Stanislaus (50)
123.1 0.27 125.0 460.0 6
San Diego (37)
82.9 4.77 5.00 17.4 4
Monterey (27)
53.4 7.64 7.75 7.00 5
Ventura (56)
40.5 1.13 233.0 36.0 6
Solano (48)
0.69 0.06 2.35 11.8 5
Yuba (58)
0.10 0.03 3.00 3.00 1
Santa Clara (43)
0.0069 0.07 0.10 0.10 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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  • 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.