Atrazine (4L formulation) is priced at $7–$12 per gallon in spring 2026 — flat year-over-year. Atrazine is a commodity pre-emergent herbicide with mature generic manufacturing and no supply chain disruption. At typical corn application rates of 1.0–2.0 lb ai/acre, cost is $3.50–$9.60 per acre.
Current Signal: BUY
Year-over-year change: Flat
| Market / Region | Price Range |
|---|---|
| Atrazine 4L (jug) | $7 – $12/gal |
| Atrazine 90DF (dry) | $4.50 – $7.00/lb |
| Cost/acre at 1.5 lb ai | $3.50 – $5.50/acre |
| Cost/acre at 2.0 lb ai | $4.50 – $7.20/acre |
Atrazine lost patent protection decades ago. Generic manufacturers supply the U.S. market efficiently, and prices are structurally competitive. No single supplier controls a price-moving share.
Atrazine completed a 2020 EPA re-registration review with restrictions on buffer zones near drinking water sources. Ongoing regulatory certainty has allowed manufacturers to continue investment in production, maintaining supply.
Atrazine is rarely used alone — it is typically tank-mixed with mesotrione, acetochlor, or metolachlor. The cost of the partner herbicide often exceeds atrazine, making atrazine's per-gallon price less of a budget driver than it appears.
Some states restrict atrazine applications or require setbacks. These restrictions can limit effective demand and modestly reduce regional prices in states with the strictest rules.
Atrazine 4L is $7–$12/gallon in spring 2026. Prices are flat year-over-year.
Standard corn pre-emergent rates are 1.0–2.0 lbs ai/acre. Maximum annual atrazine application in most states is 2.0 lbs ai/acre combined pre- and post-emergent.
Atrazine is among the cheapest herbicide options for corn. At $3.50–$7.20/acre, it provides broad-spectrum grass and broadleaf control at a cost that is difficult for newer MOA products to match.
Common tank-mix partners include mesotrione (Callisto), acetochlor (Harness), S-metolachlor (Dual Magnum), and bicyclopyrone. These combinations create residual activity against resistant weed species.
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