NDSU Crop and Pest Report
Weeds


ISSUE 9  June 27, 2002

 

BROADLEAF/OTHER CROP HERBICIDE UPDATE - PART 1

Beyond (BASF)

Mode of action: ALS inhibitor
a.i.: imazamox / imazapyr
Crops: Clearfield canola, wheat, and sunflower
Comments: Clearfield canola lines with value-added output traits (Nexera = Natreon quality oil varieties) and non-GM herbicide tolerance developed by a BASF/Dow agreement.

Clearfield sunflower will not be available in 2002 through Section 18 registration but is anticipated for 2003 growing season.

Cimarron Max (DuPont)

Mode of action: ALS inhibitor + plant growth regulator
a.i.:
metsulfuron + 2,4-D amine + dicamba
Crops: Pasture, rangeland, and CRP.
Comments: A premix of Ally and Weedmaster for control of annual and perennial broadleaf weeds, brush, and noxious weeds. A co-pack used at a ratio of 5 ounces Cimarron Max Part A (Ally) to 2.5 gallons Cimarron Max part B (Weedmaster). No grazing restrictions for beef cattle.

Equinox (BASF)

Mode of action: ACCase inhibitor
a.i.: tepraloxydim
Crops: Soybean. Potential use on beans and sugarbeet.
Comments: Registration unknown. Annual and perennial grass control similar to other "dim" herbicides (Poast, Select, Achieve). Use rate will have a lower ai/A that Poast. Rates lower, possibly less antagonism with broadleaf herbicides, and greater perennial grass control than Poast (sethoxydim).

Express (DuPont)

Mode of action: ALS inhibitor
a.i.:
tribenuron
Crops: SU resistant sunflower.
Comments: Non -GMO. Developed by Jerry Miller and DuPont independent of each other. Residue trials was conducted in 2001 with Section 18 possible in 2003 and full registration in 2004-5. The resistant line is specific to Express. Several other SUís and all Imi herbicides seriously injure or kill the Express resistant sunflower.

Fuego (Syngenta)

Mode of action: ALS inhibitor + plant growth regulator
a.i.: triasulfuron + dicamba
Crops: Pasture, rangeland, CRP, noncropland, roadsides, railroads, industrial plants sites, lumberyards, natural areas, and
certain other listed sites.
Comments: Copack of 4.7 oz of Amber and 100 fl oz dicamba. Similar to rave but contains more dicamba.

Harmony GT (DuPont) 75DF

Mode of action: ALS inhibitor
a.i.:
thifensulfuron
Crops: Roundup ready soybean
Comments: Harmony GT provide excellent control of wild buckwheat at the small grain rate. NDSU data show an average of 92% control from rates ranging from 0.12 to 0.5 oz ai/A (labeled rates in wheat are 0.225 to 0.45 oz ai/A).

EPA has approved a Harmony GT + glyphosate tank-mixture for in-season application to Roundup Ready soybean for improved common lambsquarters and wild buckwheat control.

Phoenix (Valent)

Mode of action: PPO inhibitor
a.i.:
lactofen + adjuvants
Crops: Soybean
Comments: A Cobra formulation that has an adjuvant system that reduces rate of adsorption, reduces soybean burn, and allows use of Select without crop oil. Add NIS at 0.125 to 0.25 % v/v or PO under hot, dry conditions. Add AMS at 2 lb/A for certain tankmixes. Reduced control of some weeds as compared to Cobra. Rainfast in 2 hours compared to 0.5 hour with Cobra.

Plateau (BASF)

Mode of action: ALS inhibitor
a.i.: imazapic
Crops: CRP
Comments: Federal label (Section 3) label was approved with no grazing or haying restrictions.

Prowl H20 (BASF)

a.i.: pendimethalin - 3.8 lb/gallon water-based product.
Crops: Same crops as the 3.3 lb/gallon oil-based product.

Pursuit (BASF)

Mode of action: ALS inhibitor
a.i.: imazethapyr
Crops: Several
Comments: Registration submitted for PPI and PRE application in lentil and chickpea. Crop Development Centre (CDC) in Saskatoon is working on an imidazolinone resistant lentil line that would tolerate POST applied Pursuit or Raptor.

Raptor (BASF)

Mode of action: ALS inhibitor
a.i.: imazamox
Crops: Several
Comments: Federal registration approved for alfalfa, and dry beans.

Richard Zollinger
NDSU Extension Weed Specialist
rzolling@ndsuext.nodak.edu


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