PAN Pesticides Database - California Pesticide Use

Pesticide Use on Mushrooms in 2016

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

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

Basic Identification Information About This Crop or Site
CDFA Commodity Group
Use Category
EPA Site Code
DPR Site Code
Mushroom, General
Other Agriculture

Acres treated, acres planted, and number of fields do not apply to this category of pesticide use.


Top 50 Pesticides Used on Mushrooms 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
Application Rate
Pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated
All Chemicals (NA, 00)
Not Listed 5,297 4.99 4,767 202.9
Thiabendazole (587)
Benzimidazole Yes 2,454 6.67 4,239 104.0
Uses: Fungicide
Neem oil (3979, 6065)
Botanical Not Listed 1,871 9.83 - 28.0
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
Calcium hypochlorite (326)
Inorganic Not Listed 414.0 - - -
Uses: Algaecide, Water Treatment
Piperonyl butoxide (486)
Unclassified Not Listed 262.3 1.02 8.86 35.4
Uses: Synergist, Insecticide
Permethrin (2008)
Pyrethroid Yes 173.8 - 4,664 -
Uses: Insecticide
Cyromazine (2286)
Triazine Yes 53.1 - 660.0 -
Uses: Insecticide, Insect Growth Regulator
Hydrogen peroxide (1794)
Peroxide Not Listed 33.2 - 6.50 -
Uses: Microbiocide, Fungicide, Herbicide, Rodenticide
Ethofenprox (2292)
Pyrethroid Ether Yes 12.8 0.26 8.86 35.4
Uses: Insecticide
Chlorothalonil (677)
Substituted Benzene Yes 8.43 - 6.50 -
Uses: Fungicide
Peroxyacetic acid (2291)
Peroxide Not Listed 7.40 - 6.50 -
Uses: Microbiocide, Fungicide, Herbicide, Rodenticide
Azadirachtin (2328)
Botanical Not Listed 5.46 0.95 - 0.12
Uses: Insecticide, Nematicide
Piperonyl butoxide, technical, other related (90486)
Unclassified Not Listed 0.83 - - -
Uses: Synergist
Pimaricin (6090)
Antibiotic Not Listed 0.57 - - -
Uses: Fungicide
Pyrethrins (510)
Botanical Yes 0.40 - - -
Uses: Insecticide

Regional Use for All Chemicals on Mushrooms in 2016

(County Code)
pounds per acre treated
Acres Planted
where all or part
has been sprayed
Acres Treated Application
California (00)
5,297 4.99 4,767 202.9 6,274
Monterey (27)
1,662 - 4,758 - 1,371
San Luis Obispo (40)
1,611 - - - 876
Santa Clara (43)
1,190 9.79 - 28.1 3,682
Colusa (06)
738.6 4.22 8.86 174.8 16
Santa Cruz (44)
93.2 - - - 195
Sonoma (49)
1.75 - - - 134
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.