Vineyard Pesticide Use Report: How to File with California DPR

By VitiScribe Editorial·March 24, 2025·Updated May 7, 2025

Late pesticide use reports incur fines of up to $5,000 per unreported application in California. If you ran 15 spray events last season and your annual report is 30 days late, you're looking at potential penalties that dwarf the cost of any compliance software.

The annual pesticide use report isn't a paperwork exercise, it's the mechanism California uses to track pesticide use statewide, enforce label compliance, and allocate monitoring resources. Missing it or filing it incorrectly has real consequences.

VitiScribe exports directly in DPR-required format. DPR submission exports are generated with one click from your existing spray log data. No reformatting, no spreadsheet work, no translating between your record system and DPR's.

TL;DR

California pesticide use reports are due monthly -- by the end of the month following applications; filing in January for an August application means five late monthly filings at up to $5,000 per unreported application, not one late annual filing
Every pesticide application must be reported with no minimum quantity threshold -- this includes organic-certified inputs (sulfur, copper, biologicals with EPA registration numbers) and applications by employees or licensed contractors; fertilizers and adjuvants without pesticide registrations are not reportable
DPR cross-checks reported registration numbers against applicator license records -- a name-to-license mismatch flags the submission; an incorrect acreage figure understates use and creates an accuracy violation separate from any timeliness issue
California allows amended filings through the CAC when errors are discovered; filing an amendment promptly is better than waiting to see whether the error is noticed during a review
VitiScribe exports DPR submissions filtered by date range in the exact format county agricultural commissioners accept -- electronic or print depending on your county; all required fields are captured during standard spray log entry with no separate reformatting step
The most effective DPR filing routine is a 10-minute monthly task: log spray records throughout the month, export the prior month's report on the first business day of the following month, and file -- this replaces a multi-hour year-end scramble with potential late-filing exposure

When Is the California Pesticide Use Report Due?

California vineyard operators must file pesticide use reports with their county agricultural commissioner (CAC) on a monthly basis. Reports are due by the end of the month following the month in which applications occurred.

Applications made in January → report due February 28
Applications made in August (peak spray season) → report due September 30

Most growers think of this as an "annual" report, but it's technically monthly filings. The practical difference matters: if you spray in August and don't file until the following January when you do your "annual" report, you have five late monthly filings, not one.

Some counties accept quarterly or annual reporting by arrangement, check with your specific CAC to confirm their requirements.

What Spray Records Are Included in the Annual DPR Report?

Every pesticide application must be reported, regardless of whether the material is:

A restricted-use pesticide or a non-restricted-use material
A synthetic or an organic-certified input (OMRI-listed sulfur, copper, and biologicals must be reported)
Applied by you, by an employee, or by a licensed pest control contractor

There is no minimum threshold below which a pesticide application doesn't need to be reported. Applied 2 ounces of sulfur to a test plot? It's reportable. Applied a biological pesticide product with an EPA registration number? Reportable.

Materials that are not reportable:

Fertilizers (unless they also carry a pesticide registration)
Adjuvants that don't have a pesticide registration number
Physical pest management activities (traps, barriers, etc.)

Required Information for Each Reported Application

DPR's reporting system requires specific fields for each application:

Application date (must match your spray records exactly)
Legal description of treated site (township, range, section) or GPS coordinates
County (relevant for operations near county lines)
Commodity code, California uses a specific commodity code for wine grapes (code 5051)
Pesticide product name and California registration number
Amount of product applied, in product units (gallons, pounds, ounces)
Treated acres and application unit
Application method
Certified applicator name and license number

DPR cross-checks reported applications against applicator license records. If your report lists a license number that doesn't match the applicator name, the submission is flagged. For a full breakdown of what DPR auditors review when they inspect your records, see what records does dpr audit.

How VitiScribe Formats Records for DPR Submission

AgWorld has limited California DPR integration; VitiScribe exports directly in DPR-required format.

In VitiScribe, every field required for DPR submission is captured in your spray log as part of standard application recording. The DPR export function generates a submission file in the exact format your county agricultural commissioner accepts, either electronic submission format or the paper form equivalent, depending on your county's process.

The export is filtered by date range, so you generate January's report from January's spray records, February's from February's, and so on. No manual extraction, no Excel formulas, no format translation.

For large vineyard operations filing reports that cover dozens of applications, the time savings are substantial. The error reduction is arguably more valuable: copy-paste errors, transposed registration numbers, and missing acreage figures are the most common reasons DPR submissions are returned for correction.

Electronic vs. Paper Filing

California DPR is transitioning to electronic filing through the CAC e-reporting system. Many counties already require electronic submission. Check with your county agricultural commissioner for current requirements.

VitiScribe exports in the electronic submission format. If your county still accepts paper forms, VitiScribe generates a print-formatted version as well.

What Happens If Your Report Is Inaccurate?

Inaccurate reports, not just late ones, carry penalties. Common accuracy issues:

Wrong registration number: If you report a product with a similar name but a different formulation's registration number, it's a reporting error. DPR cross-checks reported applications against current registrations.

Incorrect acreage: Reporting 5 acres treated when you treated 8 acres understates use. DPR uses acreage-per-product data in statewide use tracking.

Missing applications: Applying a pesticide and not reporting it is a separate violation from filing late. Every unreported application is a potential citation.

If you discover an error in a previously filed report, California allows amended filings through the CAC. File the amendment promptly rather than hoping the error isn't noticed.

Staying Current on Report Deadlines

The most practical way to avoid late filings is to treat spray record logging and report filing as the same workflow, not separate tasks. In VitiScribe, spray records accumulate throughout the month. On the first business day of each following month, you export the prior month's report and file it.

Set a calendar reminder for the 1st of each month. Use the prior month's spray log data as-is. File. This 10-minute monthly routine replaces a multi-hour year-end scramble.

See the California DPR reporting guide for the full state compliance framework, and the pesticide application records guide for what must be in your spray records to support accurate DPR filing.

CDFA Compliance for California Vineyards: Regulations Beyond DPR

FAQ

When is the California pesticide use report due for vineyards?

California pesticide use reports are due to the county agricultural commissioner by the end of the month following the month in which applications occurred. Applications made in March are due April 30. Applications made in August are due September 30. This is a monthly filing requirement, not an annual one, although some counties accept quarterly or annual filings by arrangement. Contact your specific county agricultural commissioner to confirm their accepted filing schedule.

What spray records are included in the annual DPR report?

Every pesticide application must be reported, including both restricted-use and non-restricted-use materials, and including organic-certified inputs like sulfur, copper, and biological pesticides that carry EPA registration numbers. There's no minimum quantity threshold, any application of a registered pesticide is reportable. Applications by employees and licensed pest control contractors working in your vineyard are reportable as well. The only non-reportable materials are those without a pesticide registration number, such as fertilizers and physical pest management tools.

How does VitiScribe format records for DPR submission?

VitiScribe captures all required DPR fields during standard spray log entry, application date, site location (GPS coordinates), commodity code, product name and registration number, amount applied, treated acreage, and applicator information. The DPR export function generates a submission file filtered by date range in the exact format your county agricultural commissioner accepts, either electronic or print. The export requires one click and no reformatting. Because the data comes directly from your spray log records, transcription errors are eliminated.

What is California commodity code 5051 and when does it apply?

California DPR commodity code 5051 designates wine grapes in the state's pesticide use reporting system. This code appears on every pesticide use report for spray applications made to wine grape blocks. If your vineyard grows both wine grapes and table grapes, the two crops carry different commodity codes and each application must be reported under the correct code for the treated crop. VitiScribe assigns the commodity code based on the block's crop classification -- wine grape blocks automatically populate code 5051 in the DPR export without requiring manual entry.

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Sources

California Department of Pesticide Regulation (CDPR)
California Department of Food and Agriculture (CDFA)
EPA Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
UC Cooperative Extension Viticulture
American Vineyard Foundation

Get Started with VitiScribe

California's monthly pesticide use report deadlines carry fines of up to $5,000 per unreported application for late filings -- and every application is reportable, including organic inputs, with no minimum threshold. VitiScribe captures all DPR-required fields during standard spray log entry and exports submission-ready files filtered by date range in one click, so your monthly filing is a 10-minute task rather than a multi-hour year-end reconciliation. Try VitiScribe free and file your first DPR-formatted report today.