Multinationals introduce new weed-fighting arsenals

BASF

New for 2016 from BASF is Armezon Pro herbicide for corn (field, sweet, seed corn and popcorn). Armezon Pro is an EC formulation containing topramezone (Group 27) and dimethenamid-P (Group 15).

Armezon Pro may be applied from corn emergence up to V8 stage or 30-inch tall corn (12-inches tall for sweet corn) and provides burndown and residual control of some annual broadleaf and grass weeds. Use rate range is from 14 to 24 ounces per acre, depending on soil texture and organic matter.

Bayer CropScience

DiFlexx was registered for field, white, seed and popcorn last spring and is a dicamba (Group 4) formulation with the safener cyprosulfamide. DiFlexx is registered as preplant burndown, preemergence and postemergence application in corn without any planting restrictions because of the safener included in the formulation. Postemergence applications can be made to corn up to the V10 stage of development.

Capreno (Groups 2 and 27) is now registered to be applied to V7 corn stage. Apply Capreno to field corn, silage and white corn from emergence to 20 inches tall. Do not apply to corn taller than 20 inches or that has seven or more leaf collars, whichever is more restrictive. MSO was also added as an adjuvant choice.

All Bayer CropScience labels will include new pest-resistance management language. The language is generally more detailed and reflects the need to diversify weed management tactics.

DuPont

DuPont received registration approval from the EPA for Revulin Q herbicide (Groups 2 and 27) early in the first quarter of 2015. Revulin Q is a premixture of dry mesotrione, nicosulfuron and a safener. It is labeled for postemergence grass and broadleaf weed control in numerous types of corn, including field corn grown for grain, silage or seed, yellow popcorn and sweet corn.

Cinch herbicide (Group 15) can now be applied as part of a sequential soybean weed control program. If Cinch was applied as a preplant surface, preplant incorporated or a preemergence treatment, a second treatment of Cinch can be applied postemergence provided the total rate during any one crop does not exceed 2.5 pts./acre.

Postemergence applications must be made at least 90 days before harvest. Cinch does not provide any control of emerged weeds.

FMC

Anthem Maxx is a premixture of fluthiacet-methyl (Group 14) and pyroxasulfone (Group 15) and replaces Anthem.

The rates of application for Anthem Maxx will be one-half of the rates for Anthem. Anthem Maxx is registered for preplant burndown, preemergence, preplant incorporated and postemergence application in field corn, sweetcorn, popcorn and soybeans.

Postemergence applications in corn should be made through the V4 stage of corn development, and through the V3 leaf stages in soybeans.

Monsanto

Warrant Ultra is a premixture of encapsulated acetochlor (Group 15) and fomesafen (Group 14). This product can be applied preemergence and postemergence before soybeans reach growth stage R2, and will provide control of many annual grass and broadleaf weeds.

The encapsulation of the acetochlor provides a slow release of the herbicide and increases the potential for the herbicide to remain effective for a longer period of time.

Warrant does not have any activity on weeds that have emerged at the time of application.

Syngenta

Syngenta introduced Acuron herbicide for control of annual grass and broadleaf weeds in field corn, seed corn, silage corn, sweet corn and yellow popcorn. Acuron is a premixture of S-metolachlor (Group 15), atrazine (Group 5), mesotrione (Group 27) and bicyclopyrone (Group 27). Acuron can be applied preemergence in all corn types listed.

Acuron may also be applied early postemergence in field, seed and silage corn, but not to emerged sweet corn or yellow popcorn because of potential severe crop injury.

Most of the Syngenta proprietary herbicides now have the herbicide group numbers indicated and revised resistance management language included in the label.

Valent

Valent has a new premixture, Fierce XLT, registered for use in soybeans. Fierce XLT includes chlorimuron (Group 2), flumioxazin (Group 14) and pyroxasulfone (Group 15) and can be applied as an early preplant, preplant or preemergence application.

Preemergence applications must be made within three days after planting and prior to soybean emergence. Applications of Fierce XLT after soybeans have begun to crack or are emerged will result in severe injury.
Do not perform any tillage operation after application or residual weed control will be reduced.