PAN Pesticides Database - California Pesticide Use

Pesticide Use on Walnuts in 2016

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

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

Basic Identification Information About This Crop or Site
Name
CDFA Commodity Group
Use Category
EPA Site Code
DPR Site Code
Walnuts
Fruits and Nuts
AG
03009
3009

Acres planted estimated by PUR data for walnuts are fairly accurate. In general, PUR estimates of acres planted for fruit and nut trees are more accurate than California Department of Food and Agriculture (CDFA) estimates.

 

Top 50 Pesticides Used on Walnuts 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 7,331,100 0.96 394,854 7,563,000
Uses:
Copper hydroxide (151)
Inorganic-Copper Not Listed 1,361,020 3.59 210,529 379,243
Uses: Fungicide, Microbiocide, Nematicide
Kaolin (2629)
Inorganic Not Listed 1,225,610 29.9 46,623 40,942
Uses: Insecticide, Adjuvant, Fungicide, Microbiocide
Mancozeb (211)
Dithiocarbamate-ETU, Inorganic-Zinc Yes 649,542 1.77 200,455 367,349
Uses: Fungicide
1,3-Dichloropropene (573)
Halogenated organic Yes 579,457 329.5 4,043 1,759
Uses: Fumigant, Nematicide
Mineral oil, refined (401, 3846, 3847, 2601, 2106, 2045, 2768)
Petroleum derivative-Saturated Not Listed 390,235 2.84 105,357 137,245
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
Glyphosate, potassium salt (5820)
Phosphonoglycine Yes 314,087 1.79 143,839 175,606
Uses: Herbicide
Glyphosate, isopropylamine salt (1855)
Phosphonoglycine Yes 261,026 1.61 134,806 162,585
Uses: Herbicide
Corn steep liquor (5960)
Botanical Not Listed 231,655 4.67 36,570 49,561
Uses:
Methyl soyate (3519)
Fatty acid ester Not Listed 127,805 0.66 146,611 193,810
Uses: Adjuvant
Chlorpyrifos (253)
Organophosphorus Yes 125,705 1.86 63,294 67,414
Uses: Insecticide, Nematicide
Chloropicrin (136)
Inorganic Yes 122,679 121.9 2,717 1,004
Uses: Fumigant, Nematicide
Corn product, hydrolyzed (2322)
Botanical Not Listed 112,745 1.27 90,334 88,812
Uses: Herbicide
Pendimethalin (1929)
2,6-Dinitroaniline Not Listed 108,600 2.43 79,109 44,700
Uses: Herbicide
Nonyl phenoxy poly (ethylene oxy) ethanol (1743, 1397, 3999, 5755)
Polyalkyloxy Compound Not Listed 102,890 0.27 234,800 383,400
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
Mineral oil, unrefined (765, 763, 473)
Petroleum derivative-Aromatic Yes 97,055 6.73 12,269 14,416
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
Ethephon (1626)
Organophosphorus Yes 89,739 0.80 123,523 112,046
Uses: Plant Growth Regulator
Glufosinate-ammonium (3946)
Phosphonoglycine Not Listed 80,008 0.87 106,274 92,488
Uses: Herbicide
Paraquat dichloride (1601)
Bipyridylium Yes 78,979 1.04 81,266 75,937
Uses: Herbicide
Oxyfluorfen (1973)
Diphenyl ether Yes 71,887 0.37 215,906 195,175
Uses: Herbicide
Propargite (445)
Unclassified Yes 66,869 2.83 23,268 23,604
Uses: Insecticide
Copper oxide (ous) (175)
Inorganic-Copper Not Listed 62,877 3.87 6,239 16,237
Uses: Fungicide, Insecticide
Sulfuryl fluoride (618)
Inorganic Yes 58,296 - - -
Uses: Fumigant
Copper sulfate (basic) (162)
Inorganic-Copper Not Listed 52,721 4.67 6,960 11,288
Uses: Fungicide, Algaecide, Molluscicide
Copper oxychloride (156)
Inorganic-Copper Not Listed 52,581 1.12 30,109 46,874
Uses: Fungicide
Oleic acid, methyl ester (2266)
Fatty acid ester Not Listed 42,446 0.74 43,419 57,486
Uses: Adjuvant
Ammonium sulfate (1363)
Inorganic Not Listed 34,244 0.23 130,288 148,814
Uses: Herbicide, pH Adjustment
Propylene oxide (508)
Alcohol/Ether Yes 32,110 - - -
Uses: Fumigant
Oryzalin (1868)
2,6-Dinitroaniline Yes 28,365 2.63 21,693 10,765
Uses: Herbicide
Bifenazate (5657)
Unclassified Not Listed 27,816 0.58 55,814 47,836
Uses: Insecticide
Mono- and di- potassium salts of phosphorous acid (5766)
Inorganic Not Listed 27,113 2.97 7,567 9,128
Uses: Fungicide, Microbiocide
2,4-D, dimethylamine salt (806)
Chlorophenoxy acid, salt, or ester Not Listed 20,640 0.98 34,085 21,169
Uses: Herbicide
Ethylene glycol polymer (2558, 1600, 2103, 2797, 2104)
Polyalkyloxy Compound Not Listed 20,193 0.32 50,094 64,088
Note! Data for Ethylene glycol polymer summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Adjuvant, Soap or Surfactant
Fatty Acids, C16-C18 and C18-unsaturated, methyl esters (5881)
Fatty acid ester Not Listed 18,924 0.51 28,838 36,900
Uses: Adjuvant
Simazine (531)
Triazine Yes 18,890 1.79 18,691 10,564
Uses: Herbicide
Methoxyfenozide (5698)
Diacylhydrazine Not Listed 18,539 0.26 69,891 71,223
Uses: Insect Growth Regulator
Alcohol ethoxylate (C9-C11, 6 EO) (2700)
Polyalkyloxy Compound Not Listed 18,290 0.15 103,160 124,802
Uses: Adjuvant
Silicone-polyether copolymer (3520, 3841)
Polyalkyloxy Compound, Polymer, Polyalkyloxy Compound Not Listed 17,900 0.11 65,420 164,959
Note! Data for Silicone-polyether copolymer summarizes data from 2 or more chem codes and may not agree with DPR summaries which total data for each chem code.
Uses: Adjuvant
3-(3-hydroxypropyl)-heptamethyl trisiloxane, ethoxylated, acetate (2610)
Silicone Not Listed 17,746 0.23 45,548 78,704
Uses: Adjuvant
Bifenthrin (2300)
Pyrethroid Yes 17,592 0.15 100,772 115,590
Uses: Insecticide
Lecithin (3264)
Botanical Not Listed 17,309 0.33 38,192 53,182
Uses: Fungicide
Propiconazole (2276)
Azole Yes 15,531 0.23 55,940 68,745
Uses: Fungicide
Diuron (231)
Urea Yes 15,244 1.85 17,749 8,251
Uses: Herbicide
Methyl bromide (385)
Halogenated organic Yes 14,817 92.3 156.0 84.0
Uses: Fumigant, Insecticide, Herbicide, Nematicide
Poly (methylene para nonylphenoxy) - poly (oxypropylene) propanol (1788)
Polyalkyloxy Compound Not Listed 13,885 0.18 52,876 75,077
Uses: Adjuvant
Tebuconazole (3850)
Azole Not Listed 13,514 0.21 59,341 63,583
Uses: Fungicide
Buprofezin (3947)
Unclassified Not Listed 12,472 1.76 7,860 7,096
Uses: Insect Growth Regulator
Polyoxyethylene soybean oil fatty acid ester (mol. Wt. 850) (3338)
Polyalkyloxy Compound Not Listed 12,142 1.05 14,118 11,544
Uses: Insecticide, Adjuvant
Acetamiprid (5762)
Neonicotinoid Not Listed 11,892 0.13 92,144 90,370
Uses: Insecticide
Oleic acid, ethyl ester (3933)
Fatty acid ester Not Listed 11,273 0.56 15,097 20,276
Uses: Plant Growth Regulator, Adjuvant

Regional Use for All Chemicals on Walnuts 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)
7,331,100 0.96 394,854 7,563,000 152,489
San Joaquin (39)
1,231,410 0.97 61,952 1,219,840 24,763
Butte (04)
1,163,060 0.95 48,086 1,223,040 19,759
Stanislaus (50)
935,837 1.14 36,248 816,349 18,577
Sutter (51)
585,587 0.97 35,379 600,109 13,217
Tehama (52)
556,085 0.86 28,650 621,072 16,344
Tulare (54)
522,262 0.96 40,403 539,671 12,222
Glenn (11)
445,703 0.76 31,070 568,725 11,269
Yuba (58)
440,769 1.54 16,485 287,122 4,585
Colusa (06)
374,029 1.02 18,460 365,826 4,879
Fresno (10)
215,387 1.29 9,759 167,131 3,534
Kings (16)
210,635 0.69 17,392 305,312 7,565
Yolo (57)
189,688 0.74 17,064 244,537 4,071
Merced (24)
144,041 0.84 8,295 171,352 3,505
Solano (48)
102,150 0.58 11,522 175,702 3,697
Madera (20)
66,380 0.99 3,255 66,342 902
Placer (31)
44,960 0.96 2,639 46,663 503
Sacramento (34)
25,465 0.64 1,731 39,876 502
Shasta (45)
19,840 0.91 1,269 21,733 862
Kern (15)
15,345 0.43 2,288 35,695 488
San Benito (35)
12,275 2.25 696.4 3,584 202
Monterey (27)
8,026 0.60 363.0 13,480 63
Contra Costa (07)
7,633 0.56 602.2 13,403 328
Lake (17)
7,571 0.95 1,380 7,980 359
Calaveras (05)
3,436 0.71 546.0 4,830 103
Santa Clara (43)
2,178 1.04 283.0 2,074 64
San Luis Obispo (40)
534.6 1.08 270.3 496.0 40
Santa Barbara (42)
291.6 0.54 297.0 538.0 14
Amador (03)
170.8 1.16 42.0 146.0 23
Alameda (01)
123.5 - - - 7
El Dorado (09)
83.8 0.77 27.1 108.3 4
Ventura (56)
65.2 5.76 12.8 11.3 8
Mendocino (23)
33.8 1.90 1.25 17.8 20
Sonoma (49)
28.1 0.70 10.0 40.0 4
Santa Cruz (44)
12.6 0.06 40.0 200.0 5
San Bernardino (36)
0.06 5.82 0.0100 0.0100 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.

To print this page, choose Print. To export this data, choose Save As 'HTML Source' and open it in Excel or equivalent program.

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.