Herbicides on forest land: Del Norte County
Every gallon and pound of herbicide reported on forestry use reports, year by year, totalled from the county agricultural commissioners’ own records. Amounts are of the product as sold, not of active ingredient, and gallons and pounds are kept apart because they cannot honestly be added.
2,342 gal
Liquid herbicide product, 2024–2026
218 lb
Dry herbicide product, 2024–2026
6,520
Acres treated
388
Applications
- Hexazinone
- Other
By year
| Total | 2024 | 2025 | 2026 | All years |
|---|---|---|---|---|
| Del Norte County | 932 gal 107 lb | 795 gal 31 lb + 62 ounce | 615 gal 79.9 lb + 10 ounce | 2,342 gal 218 lb + 72 ounce 388 applications · 6,520 ac |
Not counted above: 636 gal of tank additives (surfactants, oils, dyes) mixed in with the herbicides.
By chemical
| Active ingredient(s) | 2024 | 2025 | 2026 | All years |
|---|---|---|---|---|
| Triclopyr, butoxyethyl ester | 368 gal | 299 gal | 171 gal | 838 gal 156 applications |
| Imazapyr, isopropylamine salt | 239 gal | 141 gal | 99.1 gal | 479 gal 175 applications |
| Triclopyr, triethylamine salt | — | 157 gal | 239 gal | 395 gal 53 applications |
| Triclopyr choline | 239 gal | 140 gal | 9.4 gal | 388 gal 47 applications |
| Clopyralid, monoethanolamine salt | 37.9 gal | 30.9 gal | 37.3 gal | 106 gal 122 applications |
| Glyphosate, isopropylamine salt | 32.5 gal | — | 56.2 gal | 88.7 gal 8 applications |
| Not yet identified | 7.4 gal | 22.5 gal + 62 ounce | 2.8 gal + 10 ounce | 32.6 gal + 72 ounce 7 applications |
| Indaziflam | 7.2 gal | 1.5 gal | — | 8.7 gal 8 applications |
| Glyphosate, dimethylamine salt | — | 5 gal | — | 5 gal 2 applications |
| Sulfometuron-methyl | 65.1 lb | 31 lb | 79.9 lb | 176 lb 90 applications |
| Hexazinone | 42 lb | — | — | 42 lb 1 application |
By landowner
| Landowner | 2024 | 2025 | 2026 | All years |
|---|---|---|---|---|
| GREEN DIAMOND RESOURCES | 889 gal 107 lb | 795 gal 31 lb + 62 ounce | 615 gal 79.9 lb + 10 ounce | 2,300 gal 218 lb + 72 ounce 386 applications · 6,432 ac |
| Stacey Grabarz | 42.2 gal | — | — | 42.2 gal 2 applications · 88 ac |
Records that don’t add up
These lines report a rate per acre more than ten times what the same product is normally reported at — almost always a dropped decimal point in the county’s data. They are left out of the totals above rather than corrected, and shown here so the county can be asked to fix them.
| Use report | Date | County | Product | Reported | Per acre | Usual per acre |
|---|---|---|---|---|---|---|
| WEB2419154933 | 2024-09-05 | Del Norte | OUST XP HERBICIDE | 25 pounds on 15 ac | 1.67 | 0.09 |
| WEB2419154934 | 2024-09-05 | Del Norte | OUST XP HERBICIDE | 20 pounds on 12 ac | 1.67 | 0.09 |
| WEB2419154935 | 2024-09-06 | Del Norte | OUST XP HERBICIDE | 15 pounds on 8 ac | 1.88 | 0.09 |
| WEB2419251384 | 2024-10-17 | Del Norte | ALLIGARE IMAZAPYR 4 SL | 5 gallons on 5 ac | 1 | 0.09 |
How these totals are made
- Only published forestry applications, and only what use reports say was applied. Notices of intent are plans, not use, and are left out.
- The same record sent in several formats is counted once.
- A product with two active ingredients is counted once, under the mix, so the chemicals add up to the yearly total.
- Rodent baits are not herbicides and are not counted. Tank additives are totalled separately.
- Ounces are read as fluid or weight ounces from the product’s formulation; anything that still can’t be converted is shown as “+ amount unit” rather than dropped.
- Totals grow as more counties answer records requests, so a low number can mean a county has not sent its records yet.