In 2024, 134 metolachlor (57 metolachlor and 77 S-metolachlor) containing products were registered for sale in Minnesota. S-metolachlor is a more active form of the herbicide. Examples of metolachlor products are listed in Table 1. Thirty-seven were metolachlor-only products and 97 were "pre-mix" combination products of metolachlor and other herbicides (Table 2). Not all metolachlor products registered for sale in Minnesota are purchased by consumers each year. For example, in 2017, sales were reported on 60 of the 113 products registered.
Concentration of metolachlor in 2017 registered products range from 16% to 87.3%. This is referred to as the active ingredient, or a.i., of a metolachlor product.
Minnesota registration information for metolachlor and other pesticide products is available through the Kelly Registration Systems or the National Pesticide Information Retrieval System. Examples of metolachlor product labels are available through the Crop Data Management Systems (CDMS). Note that pesticide product labels change over time. The only official product label is the label attached to the container of the pesticide being used.
The MDA collects pesticide sales data to provide long-term trends in pesticide use. Sales data should not be used as an indicator of pesticide use in a given year as product bought one year may be held over and used the following year or may be returned unused to the distributor.
In 2017, over 3.5 million pounds of metolachlor’s active ingredient was sold in Minnesota (Figure 1). Fifty-nine percent of metolachlor sold in 2017 was metolachlor-only products and 41% was pre-mix combination products of metolachlor and another herbicide or herbicides.
Figure 1: Pounds of s-metolachlor active ingredients (a.i.) sold in Minnesota, 1996-2021
Table 1: Example trade names of metolachlor products registered for sale in Minnesota for 2017*
| Trade Name | Company | EPA Registration Number | Percent Metolachlor (or S-Metolachlor) Content |
|---|---|---|---|
| Acuron Flexi | Sygenta | 100-1568 | 31.24 |
| Agrisolutions Charger Basic | Winfield Solutions | 1381-207 | 83.7 |
| Authority Elite Herbicide | FMC Corporation | 279-3442 | 68.25 |
| Brawl Herbicide | Tenkoz | 100-816-55467 | 83.7 |
| Cinch Herbicide | Corteva | 352-625 | 82.4 |
| Dual II G Magnum | Syngenta | 100-910 | 16 |
| Halex GT | Syngenta | 100-1282 | 20.5 |
| Matador | Loveland | 34704-1054 | 43.72 |
| Me-Too-Lachlor II Herbicide | Drexel | 19713-549 | 84.4 |
| Meto-S | Sharda | 83529-57 | 84.4 |
| Prefix Herbicide | Syngenta | 100-1268 | 46.4 |
| Stalwart Herbicide | Sipcam Agro | 60063-24 | 86.4 |
*Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement is implied.
Table 2: Number of metolachlor products registered for sale in Minnesota in 2024
| Metolachlor product formulation | Restricted Use Pesticide Status (see Note 1) |
Number of Minnesota Products |
|---|---|---|
| Metolachlor (including S-metolachlor) | No | 37 |
| Metolachlor and atrazine | Yes | 17 |
| Metolachlor, atrazine, and mesotrione | Yes | 15 |
| Metolachlor, atrazine, bicyclopyrone, and mesotrione | Yes | 1 |
| Metolachlor, atrazine, and tolpyralate | Yes | 2 |
| Metolachlor, bicyclopyrone, and mesotrione | No | 1 |
| Metolachlor, bicyclopyrone, mesotrione, and glyphosate | No | 1 |
| Metolachlor, bicyclopyrone, mesotrione, and pyroxasulfone | No | 1 |
| Metolachlor and dicamba | Yes | 1 |
| Metolachlor and fomesafen | No | 8 |
| Metolachlor, fomesafen, and metribuzin | No | 1 |
| Metolachlor and glufosinate-ammonium | No | 2 |
| Metolachlor and glyphosate | No | 1 |
| Metolachlor and imazethapyr | No | 1 |
| Metolachlor and mesotrione | No | 11 |
| Metolachlor, mesotrione, and glyphosate | No | 2 |
| Metolachlor and metribuzin | No | 14 |
| Metolachlor, metribuzin, and cloransulam | No | 1 |
| Metolachlor, metribuzin, and imazethapyr | No | 1 |
| Metolachlor, metribuzin, and sulfentrazone | No | 2 |
| Metolachlor and sulfentrazone | No | 10 |
| Metolachlor and tolpyralate | No | 1 |
| Total | 131 |
Notes:
- If a metolachlor-only product is combined with a Restricted Use Pesticide such as atrazine, the combined product has Restricted Use Pesticide status.
- Not all metolachlor products registered for sale in Minnesota are being purchased. For example, in 2017, 113 metolachlor products were registered for sale in Minnesota, but only 60 were sold.
- Information on pesticide products registered for use in Minnesota can be obtained from Kelly Registration Systems or the National Pesticide Information Retrieval System.
