The purpose of combining herbicides is to exploit the strong properties of each herbicide while minimizing any weaknesses or undesirable properties. By combining herbicides at reduced rates, the grower can increase the spectrum of annual weeds controlled while reducing herbicide carryover. See label concerning the herbicides in use.
Under furrow irrigation, combinations are best applied preplant and incorporated. Some combinations (refer to labels), however, have been registered for application through sprinkler irrigation systems that incorporate them. This method of application is acceptable, provided the herbicides are applied before weeds emerge.
Refer to each label for actual rates and further details concerning herbicide combinations. Component products may have slightly different labels; thus, rates and use directions may vary slightly.
Tank-mixes
Unless specifically prohibited on the label, herbicides registered for use on the same crop may be tank mixed. Unless a tank-mix is recommended on an herbicide label, the grower, applicator, or person making the tank-mix recommendation will be responsible and liable for injury, nonperformance, or other problems associated with the application.
Premixes
There exists an abundance of premixes available; listed on the next page are just a few of the many labeled for corn.
A Few Examples of Convenient Premixes Labeled for Corn
|
Trade Name |
Ingredients |
Group |
|
Affinity |
40% thifensulfuron + 10% tribenuron |
2 + 2 |
|
Acuron Flexi |
0.87% bicyclopyrone + 3.47% mesotrione + 31.24% s-metolachlor (Consult the label for tank mixing with Trivapro fungicide for early application on field corn or tank mixing with Liberty 280 SL for postemergence control of broadleaf weeds in Liberty Link Corn) |
27 + 27 + 15 |
|
Anthem Flex |
3.733 lb ai/gal pyroxasulfone + 0.267 lb ai/gal carfentrazone-ethyl (Before applying Anthem Flex herbicide to sweet corn, popcorn, or seed corn, check with your local seed supplier to verify the selectivity on any inbred lines or hybrids to avoid any possible injury.) |
15 + 14 |
|
Anthem Maxx |
0.126 lb ai/gal fluthiacet-methyl + 4.174 pyroxasulfone |
14 + 15 |
|
Axiom DF |
54.4% flufenacet + 13.6% metribuzin/lb |
15 + 5 |
|
Basis |
50% rimsulfuron + 25% thifensulfuron/lb |
2 + 2 |
|
Bicep Lite II Magnum |
3.33 lb S-metolachlor + 2.67 lb atrazine/gal |
15 + 5 |
|
Bicep II Magnum |
2.4 lb S-metolachlor + 3.1 lb atrazine/gal gal |
15 + 5 |
|
Breakfree ATZ |
2.25 lb atrazine + 3 lb acetochlor/gal |
5 + 15 |
|
Breakfree ATZ Lite |
1.5 lb atrazine + 4 lb acetochlor/gal |
5 + 15 |
|
Buctril + Atrazine (Idaho only) |
1 lb bromoxynil + 2 lb atrazine/gal 1 |
6 + 5 |
|
Cadence ATZ |
3 lb acetochlor + 2.25 lb atrazine/gal |
15 + 5 |
|
Cadence Lite ATZ |
4 lb acetochlor + 1.5 lb atrazine/gal |
15 + 5 |
|
Cinch ATZ |
3.33 lb S-metolachlor + 2.67 lb atrazine/gal |
15 + 5 |
|
Cinch ATZ Lite |
2.4 lb S-metolachlor + 3.1 lb atrazine/gal |
15 + 5 |
|
Halex GT |
20.5% S-metolachlor + 20.5% glyphosate + 2.05% mesotrione (glyphosate tolerant corn only) |
15 + 9 + 27 |
|
Harness Xtra (ID only) |
1.7 lb dimethenamid-P + 3.3 lb atrazine/gal |
15 + 5 |
|
Harness Xtra 5.6L (ID only) |
3.1 lb acetochlor + 2.5 lb atrazine/gal |
15 + 5 |
|
Keystone (ID, WA only) |
3 lb acetochlor + 2.25 lb atrazine/gal |
15 + 5 |
|
Keystone LA (ID, WA only) |
4 lb acetochlor + 1.5 lb atrazine/gal |
15 + 5 |
|
Lexar EZ |
1.74 lb S-metolachlor + 0.224 lb mesotrione + 1.74 lb atrazine/gal |
15 + 27 + 5 |
|
Lumax EZ |
2.49 lb S-metolachlor + 0.935 lb atrazine + 0.21% atrazine related compounds + 0.249 mesotrione lb ai/gal |
15 + 5 + 27 |
|
Medal II ATZ |
3.1 lb atrazine + 0.7% atrazine related compounds + 2.4 lb S-metolachlor/gal |
5 + 15 |
|
NorthStar |
7.5% primisulfuron + 43.9% dicamba/lb |
2 + 4 |
|
Permit PLUS |
66.2% halosulfuron + 7.78% thifensulfuron |
2 + 2 |
|
Realm Q |
7.5% rimsulfuron + 31.25% mesotrione |
2 + 27 |
|
Require Q (mp) |
52.94% dicamba + 6.25% rimsulfuron/lb |
4 + 2 |
|
Resolve Q |
18.4 % rimsulfuron + 4% thifensulfuron-methyl/lb |
2 + 2 |
|
Sequence |
2.25 lb glyphosate + 3 lb S-metolachlor/gal (glyphosate tolerant corn only) |
9 + 15 |
|
Spirit |
14.2% prosulfuron + 42.8% primisulfuron/lb |
2 + 2 |
|
Stalwart |
3.1 lb atrazine + 2.4 lb S-metolachlor /gal |
5 + 15 |
|
Status |
16% diflufenzopyr + 40% dicamba/lb |
19 + 4 |
|
Steadfast Q |
25.2% nicosulfuron + 12.5% rimsulfuron/lb |
2 + 2 |
|
Stout |
67.5% nicosulfuron + 5% thifensulfuron/lb |
2 + 2 |
|
Tripzin ZC |
2.9 lb pendimethalin + 1.1 lb metribuzin/gal |
3 + 5 |
|
SureStart (ID and OR only) |
3.75 lb acetochlor + 0.38 lb clopyralid + 0.12 lb flumetsulam/gal |
15 + 4 + 2 |
|
WideMatch |
0.75 lb fluroxypyr + 0.75 lb clopyralid/gal |
4 + 4 |